Write logging in case a Matcher throws an exception (#986)

* ThrowException

* ...

* .

* ...

* b

* fix test

* ...

* .

* sonar

* ft

* .

* fix tst

src/WireMock.Net.Abstractions/Admin/Mappings/StatusModel.cs

@@ -1,21 +1,25 @@
-using System;
+using System;
 
-namespace WireMock.Admin.Mappings
+namespace WireMock.Admin.Mappings;
+
+/// <summary>
+/// Status
+/// </summary>
+[FluentBuilder.AutoGenerateBuilder]
+public class StatusModel
 {
     /// <summary>
-    /// Status
+    /// The optional guid.
     /// </summary>
-    [FluentBuilder.AutoGenerateBuilder]
+    public Guid? Guid { get; set; }
-    public class StatusModel
-    {
-        /// <summary>
-        /// The optional guid.
-        /// </summary>
-        public Guid? Guid { get; set; }
 
-        /// <summary>
+    /// <summary>
-        /// The status (can also contain the error message).
+    /// The status.
-        /// </summary>
+    /// </summary>
-        public string Status { get; set; }
+    public string? Status { get; set; }
-    }
+
+    /// <summary>
+    /// The error message.
+    /// </summary>
+    public string? Error { get; set; }
 }

src/WireMock.Net.Abstractions/Admin/Settings/SettingsModel.cs

@@ -62,11 +62,6 @@ public class SettingsModel
     /// </summary>
     public bool? HandleRequestsSynchronously { get; set; }
 
-    /// <summary>
-    /// Throw an exception when the Matcher fails because of invalid input. (default set to <c>false</c>).
-    /// </summary>
-    public bool? ThrowExceptionWhenMatcherFails { get; set; }
-
     /// <summary>
     /// Use the RegexExtended instead of the default <see cref="Regex"/>.  (default set to <c>true</c>).
     /// </summary>

src/WireMock.Net.Abstractions/Handlers/IFileSystemHandler.cs

@@ -1,121 +1,120 @@
 using JetBrains.Annotations;
 using System.Collections.Generic;
 
-namespace WireMock.Handlers
+namespace WireMock.Handlers;
+
+/// <summary>
+/// Handler to interact with the file system to handle folders and read and write (static mapping) files.
+/// </summary>
+public interface IFileSystemHandler
 {
     /// <summary>
-    /// Handler to interact with the file system to handle folders and read and write (static mapping) files.
+    /// Gets the folder where the static mappings are located. For local file system, this would be `{CurrentFolder}/__admin/mappings`.
     /// </summary>
-    public interface IFileSystemHandler
+    /// <returns>The folder name.</returns>
-    {
+    string GetMappingFolder();
-        /// <summary>
-        /// Gets the folder where the static mappings are located. For local file system, this would be `{CurrentFolder}/__admin/mappings`.
-        /// </summary>
-        /// <returns>The folder name.</returns>
-        string GetMappingFolder();
 
-        /// <summary>
+    /// <summary>
-        /// Determines whether the given path refers to an existing directory on disk.
+    /// Determines whether the given path refers to an existing directory on disk.
-        /// </summary>
+    /// </summary>
-        /// <param name="path">The path.</param>
+    /// <param name="path">The path.</param>
-        /// <returns>true if path refers to an existing directory; false if the directory does not exist or an error occurs when trying to determine if the specified directory exists.</returns>
+    /// <returns>true if path refers to an existing directory; false if the directory does not exist or an error occurs when trying to determine if the specified directory exists.</returns>
-        bool FolderExists([NotNull] string path);
+    bool FolderExists([NotNull] string path);
 
-        /// <summary>
+    /// <summary>
-        ///  Creates all directories and subdirectories in the specified path unless they already exist.
+    ///  Creates all directories and subdirectories in the specified path unless they already exist.
-        /// </summary>
+    /// </summary>
-        /// <param name="path">The path.</param>
+    /// <param name="path">The path.</param>
-        void CreateFolder([NotNull] string path);
+    void CreateFolder([NotNull] string path);
 
-        /// <summary>
+    /// <summary>
-        ///  Returns an enumerable collection of file names in a specified path.
+    ///  Returns an enumerable collection of file names in a specified path.
-        /// </summary>
+    /// </summary>
-        /// <param name="path">The path.</param>
+    /// <param name="path">The path.</param>
-        /// <param name="includeSubdirectories">A value indicating whether subdirectories should also included when enumerating files.</param>
+    /// <param name="includeSubdirectories">A value indicating whether subdirectories should also included when enumerating files.</param>
-        /// <returns>An enumerable collection of the full names (including paths) for the files in the directory (and optionally subdirectories) specified by path.</returns>
+    /// <returns>An enumerable collection of the full names (including paths) for the files in the directory (and optionally subdirectories) specified by path.</returns>
-        IEnumerable<string> EnumerateFiles([NotNull] string path, bool includeSubdirectories);
+    IEnumerable<string> EnumerateFiles([NotNull] string path, bool includeSubdirectories);
 
-        /// <summary>
+    /// <summary>
-        /// Read a static mapping file as text.
+    /// Read a static mapping file as text.
-        /// </summary>
+    /// </summary>
-        /// <param name="path">The path (folder + filename with .json extension).</param>
+    /// <param name="path">The path (folder + filename with .json extension).</param>
-        /// <returns>The file content as text.</returns>
+    /// <returns>The file content as text.</returns>
-        string ReadMappingFile([NotNull] string path);
+    string ReadMappingFile([NotNull] string path);
 
-        /// <summary>
+    /// <summary>
-        /// Write the static mapping file.
+    /// Write the static mapping file.
-        /// </summary>
+    /// </summary>
-        /// <param name="path">The path (folder + filename with .json extension).</param>
+    /// <param name="path">The path (folder + filename with .json extension).</param>
-        /// <param name="text">The text.</param>
+    /// <param name="text">The text.</param>
-        void WriteMappingFile([NotNull] string path, [NotNull] string text);
+    void WriteMappingFile([NotNull] string path, [NotNull] string text);
 
-        /// <summary>
+    /// <summary>
-        /// Read a response body file as byte[].
+    /// Read a response body file as byte[].
-        /// </summary>
+    /// </summary>
-        /// <param name="path">The path or filename from the file to read.</param>
+    /// <param name="path">The path or filename from the file to read.</param>
-        /// <returns>The file content as bytes.</returns>
+    /// <returns>The file content as bytes.</returns>
-        byte[] ReadResponseBodyAsFile([NotNull] string path);
+    byte[] ReadResponseBodyAsFile([NotNull] string path);
 
-        /// <summary>
+    /// <summary>
-        /// Read a response body file as text.
+    /// Read a response body file as text.
-        /// </summary>
+    /// </summary>
-        /// <param name="path">The path or filename from the file to read.</param>
+    /// <param name="path">The path or filename from the file to read.</param>
-        /// <returns>The file content as text.</returns>
+    /// <returns>The file content as text.</returns>
-        string ReadResponseBodyAsString([NotNull] string path);
+    string ReadResponseBodyAsString([NotNull] string path);
 
-        /// <summary>
+    /// <summary>
-        /// Delete a file.
+    /// Delete a file.
-        /// </summary>
+    /// </summary>
-        /// <param name="filename">The filename.</param>
+    /// <param name="filename">The filename.</param>
-        void DeleteFile([NotNull] string filename);
+    void DeleteFile([NotNull] string filename);
 
-        /// <summary>
+    /// <summary>
-        /// Determines whether the given path refers to an existing file on disk.
+    /// Determines whether the given path refers to an existing file on disk.
-        /// </summary>
+    /// </summary>
-        /// <param name="filename">The filename.</param>
+    /// <param name="filename">The filename.</param>
-        /// <returns>true if path refers to an existing file; false if the file does not exist.</returns>
+    /// <returns>true if path refers to an existing file; false if the file does not exist.</returns>
-        bool FileExists([NotNull] string filename);
+    bool FileExists([NotNull] string filename);
 
-        /// <summary>
+    /// <summary>
-        /// Write a file.
+    /// Write a file.
-        /// </summary>
+    /// </summary>
-        /// <param name="filename">The filename.</param>
+    /// <param name="filename">The filename.</param>
-        /// <param name="bytes">The bytes.</param>
+    /// <param name="bytes">The bytes.</param>
-        void WriteFile([NotNull] string filename, [NotNull] byte[] bytes);
+    void WriteFile([NotNull] string filename, [NotNull] byte[] bytes);
 
-        /// <summary>
+    /// <summary>
-        /// Write a file.
+    /// Write a file.
-        /// </summary>
+    /// </summary>
-        /// <param name="folder">The folder.</param>
+    /// <param name="folder">The folder.</param>
-        /// <param name="filename">The filename.</param>
+    /// <param name="filename">The filename.</param>
-        /// <param name="bytes">The bytes.</param>
+    /// <param name="bytes">The bytes.</param>
-        void WriteFile([NotNull] string folder, [NotNull] string filename, [NotNull] byte[] bytes);
+    void WriteFile([NotNull] string folder, [NotNull] string filename, [NotNull] byte[] bytes);
 
-        /// <summary>
+    /// <summary>
-        /// Read a file as bytes.
+    /// Read a file as bytes.
-        /// </summary>
+    /// </summary>
-        /// <param name="filename">The filename.</param>
+    /// <param name="filename">The filename.</param>
-        /// <returns>The file content as bytes.</returns>
+    /// <returns>The file content as bytes.</returns>
-        byte[] ReadFile([NotNull] string filename);
+    byte[] ReadFile([NotNull] string filename);
 
-        /// <summary>
+    /// <summary>
-        /// Read a file as string.
+    /// Read a file as string.
-        /// </summary>
+    /// </summary>
-        /// <param name="filename">The filename.</param>
+    /// <param name="filename">The filename.</param>
-        /// <returns>The file content as a string.</returns>
+    /// <returns>The file content as a string.</returns>
-        string ReadFileAsString([NotNull] string filename);
+    string ReadFileAsString([NotNull] string filename);
 
-        /// <summary>
+    /// <summary>
-        /// Gets the folder where the unmatched requests should be stored. For local file system, this would be `{CurrentFolder}/requests/unmatched`.
+    /// Gets the folder where the unmatched requests should be stored. For local file system, this would be `{CurrentFolder}/requests/unmatched`.
-        /// </summary>
+    /// </summary>
-        /// <returns>The folder name.</returns>
+    /// <returns>The folder name.</returns>
-        string GetUnmatchedRequestsFolder();
+    string GetUnmatchedRequestsFolder();
 
-        /// <summary>
+    /// <summary>
-        /// Write a unmatched request to the Unmatched RequestsFolder.
+    /// Write a unmatched request to the Unmatched RequestsFolder.
-        /// </summary>
+    /// </summary>
-        /// <param name="filename">The filename.</param>
+    /// <param name="filename">The filename.</param>
-        /// <param name="text">The text.</param>
+    /// <param name="text">The text.</param>
-        void WriteUnmatchedRequest([NotNull] string filename, [NotNull] string text);
+    void WriteUnmatchedRequest([NotNull] string filename, [NotNull] string text);
-    }
 }

src/WireMock.Net.Abstractions/Logging/IWireMockLogger.cs

@@ -2,65 +2,63 @@ using System;
 using JetBrains.Annotations;
 using WireMock.Admin.Requests;
 
-namespace WireMock.Logging
+namespace WireMock.Logging;
+
+/// <summary>
+/// IWireMockLogger interface
+/// </summary>
+[PublicAPI]
+public interface IWireMockLogger
 {
     /// <summary>
-    /// IWireMockLogger interface
+    /// Writes the message at the Debug level using the specified parameters. 
     /// </summary>
+    /// <param name="formatString">The format string.</param>
+    /// <param name="args">The arguments.</param>
     [PublicAPI]
-    public interface IWireMockLogger
+    [StringFormatMethod("formatString")]
-    {
+    void Debug(string formatString, params object[] args);
-        /// <summary>
-        /// Writes the message at the Debug level using the specified parameters. 
-        /// </summary>
-        /// <param name="formatString">The format string.</param>
-        /// <param name="args">The arguments.</param>
-        [PublicAPI]
-        [StringFormatMethod("formatString")]
-        void Debug(string formatString, params object[] args);
 
-        /// <summary>
+    /// <summary>
-        /// Writes the message at the Info level using the specified parameters. 
+    /// Writes the message at the Info level using the specified parameters. 
-        /// </summary>
+    /// </summary>
-        /// <param name="formatString">The format string.</param>
+    /// <param name="formatString">The format string.</param>
-        /// <param name="args">The arguments.</param>
+    /// <param name="args">The arguments.</param>
-        [PublicAPI]
+    [PublicAPI]
-        [StringFormatMethod("formatString")]
+    [StringFormatMethod("formatString")]
-        void Info(string formatString, params object[] args);
+    void Info(string formatString, params object[] args);
 
-        /// <summary>
+    /// <summary>
-        /// Writes the message at the Warning level using the specified parameters. 
+    /// Writes the message at the Warning level using the specified parameters. 
-        /// </summary>
+    /// </summary>
-        /// <param name="formatString">The format string.</param>
+    /// <param name="formatString">The format string.</param>
-        /// <param name="args">The arguments.</param>
+    /// <param name="args">The arguments.</param>
-        [PublicAPI]
+    [PublicAPI]
-        [StringFormatMethod("formatString")]
+    [StringFormatMethod("formatString")]
-        void Warn(string formatString, params object[] args);
+    void Warn(string formatString, params object[] args);
 
-        /// <summary>
+    /// <summary>
-        /// Writes the message at the Error level using the specified parameters. 
+    /// Writes the message at the Error level using the specified parameters. 
-        /// </summary>
+    /// </summary>
-        /// <param name="formatString">The format string.</param>
+    /// <param name="formatString">The format string.</param>
-        /// <param name="args">The arguments.</param>
+    /// <param name="args">The arguments.</param>
-        [PublicAPI]
+    [PublicAPI]
-        [StringFormatMethod("formatString")]
+    [StringFormatMethod("formatString")]
-        void Error(string formatString, params object[] args);
+    void Error(string formatString, params object[] args);
 
-        /// <summary>
+    /// <summary>
-        /// Writes the message at the Error level using the specified exception. 
+    /// Writes the message at the Error level using the specified exception. 
-        /// </summary>
+    /// </summary>
-        /// <param name="formatString">The format string.</param>
+    /// <param name="formatString">The format string.</param>
-        /// <param name="exception">The exception.</param>
+    /// <param name="exception">The exception.</param>
-        [PublicAPI]
+    [PublicAPI]
-        [StringFormatMethod("formatString")]
+    void Error(string formatString, Exception exception);
-        void Error(string formatString, Exception exception);
 
-        /// <summary>
+    /// <summary>
-        /// Writes the LogEntryModel (LogRequestModel, LogResponseModel and more).
+    /// Writes the LogEntryModel (LogRequestModel, LogResponseModel and more).
-        /// </summary>
+    /// </summary>
-        /// <param name="logEntryModel">The Request Log Model.</param>
+    /// <param name="logEntryModel">The Request Log Model.</param>
-        /// <param name="isAdminRequest">Defines if this request is an admin request.</param>
+    /// <param name="isAdminRequest">Defines if this request is an admin request.</param>
-        [PublicAPI]
+    [PublicAPI]
-        void DebugRequestResponse(LogEntryModel logEntryModel, bool isAdminRequest);
+    void DebugRequestResponse(LogEntryModel logEntryModel, bool isAdminRequest);
-    }
 }

src/WireMock.Net.Abstractions/Matchers/Request/IRequestMatchResult.cs

@@ -1,56 +1,56 @@
 using System;
 using System.Collections.Generic;
 
-namespace WireMock.Matchers.Request
+namespace WireMock.Matchers.Request;
+
+/// <summary>
+/// IRequestMatchResult
+/// </summary>
+public interface IRequestMatchResult : IComparable
 {
     /// <summary>
-    /// IRequestMatchResult
+    /// Gets the match percentage.
     /// </summary>
-    public interface IRequestMatchResult : IComparable
+    /// <value>
-    {
+    /// The match percentage.
-        /// <summary>
+    /// </value>
-        /// Gets the match percentage.
+    double AverageTotalScore { get; }
-        /// </summary>
-        /// <value>
-        /// The match percentage.
-        /// </value>
-        double AverageTotalScore { get; }
 
-        /// <summary>
+    /// <summary>
-        /// Gets or sets a value indicating whether this instance is perfect match.
+    /// Gets or sets a value indicating whether this instance is perfect match.
-        /// </summary>
+    /// </summary>
-        /// <value>
+    /// <value>
-        /// <c>true</c> if this instance is perfect match; otherwise, <c>false</c>.
+    /// <c>true</c> if this instance is perfect match; otherwise, <c>false</c>.
-        /// </value>
+    /// </value>
-        bool IsPerfectMatch { get; }
+    bool IsPerfectMatch { get; }
 
-        /// <summary>
+    /// <summary>
-        /// Gets the match details.
+    /// Gets the match details.
-        /// </summary>
+    /// </summary>
-        IList<MatchDetail> MatchDetails { get; }
+    IList<MatchDetail> MatchDetails { get; }
 
-        /// <summary>
+    /// <summary>
-        /// Gets or sets the total number of matches.
+    /// Gets or sets the total number of matches.
-        /// </summary>
+    /// </summary>
-        /// <value>
+    /// <value>
-        /// The total number of matches.
+    /// The total number of matches.
-        /// </value>
+    /// </value>
-        int TotalNumber { get; }
+    int TotalNumber { get; }
 
-        /// <summary>
+    /// <summary>
-        /// Gets or sets the match-score.
+    /// Gets or sets the match-score.
-        /// </summary>
+    /// </summary>
-        /// <value>
+    /// <value>
-        /// The match-score.
+    /// The match-score.
-        /// </value>
+    /// </value>
-        double TotalScore { get; }
+    double TotalScore { get; }
 
-        /// <summary>
+    /// <summary>
-        /// Adds the score.
+    /// Adds the score.
-        /// </summary>
+    /// </summary>
-        /// <param name="matcherType">The matcher Type.</param>
+    /// <param name="matcherType">The matcher Type.</param>
-        /// <param name="score">The score.</param>
+    /// <param name="score">The score.</param>
-        /// <returns>The score.</returns>
+    /// <param name="exception">The exception [Optional].</param>
-        double AddScore(Type matcherType, double score);
+    /// <returns>The score.</returns>
-    }
+    double AddScore(Type matcherType, double score, Exception? exception);
 }

src/WireMock.Net.Abstractions/Matchers/Request/MatchDetail.cs

@@ -1,20 +1,25 @@
-using System;
+using System;
 
-namespace WireMock.Matchers.Request
+namespace WireMock.Matchers.Request;
+
+/// <summary>
+/// MatchDetail
+/// </summary>
+public class MatchDetail
 {
     /// <summary>
-    /// MatchDetail
+    /// Gets or sets the type of the matcher.
     /// </summary>
-    public class MatchDetail
+    public Type MatcherType { get; set; } = null!;
-    {
-        /// <summary>
-        /// Gets or sets the type of the matcher.
-        /// </summary>
-        public Type MatcherType { get; set; }
 
-        /// <summary>
+    /// <summary>
-        /// Gets or sets the score between 0.0 and 1.0
+    /// Gets or sets the score between 0.0 and 1.0
-        /// </summary>
+    /// </summary>
-        public double Score { get; set; }
+    public double Score { get; set; }
-    }
+
+    /// <summary>
+    /// The exception in case the Matcher throws exception.
+    /// [Optional]
+    /// </summary>
+    public Exception? Exception { get; set; }
 }

src/WireMock.Net.Matchers.CSharpCode/Matchers/CSharpCodeMatcher.cs

@@ -30,11 +30,9 @@ internal class CSharpCodeMatcher : ICSharpCodeMatcher
         "Newtonsoft.Json.Linq"
     };
 
+    /// <inheritdoc />
     public MatchBehaviour MatchBehaviour { get; }
 
-    /// <inheritdoc cref="IMatcher.ThrowException"/>
-    public bool ThrowException { get; }
-
     private readonly AnyOf<string, StringPattern>[] _patterns;
 
     /// <summary>
@@ -55,37 +53,44 @@ internal class CSharpCodeMatcher : ICSharpCodeMatcher
     {
         _patterns = Guard.NotNull(patterns);
         MatchBehaviour = matchBehaviour;
-        ThrowException = false;
         MatchOperator = matchOperator;
     }
 
-    public double IsMatch(string? input)
+    public MatchResult IsMatch(string? input)
     {
         return IsMatchInternal(input);
     }
 
-    public double IsMatch(object? input)
+    public MatchResult IsMatch(object? input)
     {
         return IsMatchInternal(input);
     }
 
-    public double IsMatchInternal(object? input)
+    public MatchResult IsMatchInternal(object? input)
     {
-        double match = MatchScores.Mismatch;
+        var score = MatchScores.Mismatch;
+        Exception? exception = null;
 
         if (input != null)
         {
-            match = MatchScores.ToScore(_patterns.Select(pattern => IsMatch(input, pattern.GetPattern())).ToArray(), MatchOperator);
+            try
+            {
+                score = MatchScores.ToScore(_patterns.Select(pattern => IsMatch(input, pattern.GetPattern())).ToArray(), MatchOperator);
+            }
+            catch (Exception ex)
+            {
+                exception = ex;
+            }
         }
 
-        return MatchBehaviourHelper.Convert(MatchBehaviour, match);
+        return new MatchResult(MatchBehaviourHelper.Convert(MatchBehaviour, score), exception);
     }
 
     private bool IsMatch(dynamic input, string pattern)
     {
-        bool isMatchWithString = input is string;
+        var isMatchWithString = input is string;
         var inputValue = isMatchWithString ? input : JObject.FromObject(input);
-        string source = GetSourceForIsMatchWithString(pattern, isMatchWithString);
+        var source = GetSourceForIsMatchWithString(pattern, isMatchWithString);
 
         object? result;
 
@@ -155,7 +160,7 @@ internal class CSharpCodeMatcher : ICSharpCodeMatcher
             }
 
 #elif (NETSTANDARD2_0 || NETSTANDARD2_1 || NETCOREAPP3_1 || NET5_0 || NET6_0 || NET7_0)
-        Assembly assembly;
+            Assembly assembly;
             try
             {
                 assembly = CSScriptLib.CSScript.Evaluator.CompileCode(source);
@@ -198,10 +203,10 @@ internal class CSharpCodeMatcher : ICSharpCodeMatcher
 
     private string GetSourceForIsMatchWithString(string pattern, bool isMatchWithString)
     {
-        string template = isMatchWithString ? TemplateForIsMatchWithString : TemplateForIsMatchWithDynamic;
+        var template = isMatchWithString ? TemplateForIsMatchWithString : TemplateForIsMatchWithDynamic;
 
         var stringBuilder = new StringBuilder();
-        foreach (string @using in _usings)
+        foreach (var @using in _usings)
         {
             stringBuilder.AppendLine($"using {@using};");
         }
@@ -211,7 +216,7 @@ internal class CSharpCodeMatcher : ICSharpCodeMatcher
         return stringBuilder.ToString();
     }
 
-    /// <inheritdoc cref="IStringMatcher.GetPatterns"/>
+    /// <inheritdoc />
     public AnyOf<string, StringPattern>[] GetPatterns()
     {
         return _patterns;
@@ -220,6 +225,6 @@ internal class CSharpCodeMatcher : ICSharpCodeMatcher
     /// <inheritdoc />
     public MatchOperator MatchOperator { get; }
 
-    /// <inheritdoc cref="IMatcher.Name"/>
+    /// <inheritdoc />
-    public string Name => "CSharpCodeMatcher";
+    public string Name => nameof(CSharpCodeMatcher);
 }

src/WireMock.Net/Authentication/AzureADAuthenticationMatcher.cs

@@ -34,8 +34,6 @@ internal class AzureADAuthenticationMatcher : IStringMatcher
 
     public MatchBehaviour MatchBehaviour => MatchBehaviour.AcceptOnMatch;
 
-    public bool ThrowException => false;
-
     public AnyOf<string, StringPattern>[] GetPatterns()
     {
         return EmptyArray<AnyOf<string, StringPattern>>.Value;
@@ -43,7 +41,7 @@ internal class AzureADAuthenticationMatcher : IStringMatcher
 
     public MatchOperator MatchOperator { get; } = MatchOperator.Or;
 
-    public double IsMatch(string? input)
+    public MatchResult IsMatch(string? input)
     {
         if (string.IsNullOrEmpty(input))
         {
@@ -70,9 +68,9 @@ internal class AzureADAuthenticationMatcher : IStringMatcher
 
             return MatchScores.Perfect;
         }
-        catch
+        catch (Exception ex)
         {
-            return MatchScores.Mismatch;
+            return new MatchResult(MatchScores.Mismatch, ex);
         }
     }
 }

src/WireMock.Net/Constants/WireMockConstants.cs

@@ -8,4 +8,6 @@ internal static class WireMockConstants
 
     public const string ContentTypeJson = "application/json";
     public const string ContentTypeTextPlain = "text/plain";
+
+    public const string NoMatchingFound = "No matching mapping found";
 }

src/WireMock.Net/Extensions/ExceptionExtensions.cs

@@ -0,0 +1,16 @@
+using System;
+
+namespace WireMock.Extensions;
+
+internal static class ExceptionExtensions
+{
+    public static Exception? ToException(this Exception[] exceptions)
+    {
+        return exceptions.Length switch
+        {
+            1 => exceptions[0],
+            > 1 => new AggregateException(exceptions),
+            _ => null
+        };
+    }
+}

src/WireMock.Net/Handlers/LocalFileSystemHandler.cs

@@ -82,7 +82,7 @@ public class LocalFileSystemHandler : IFileSystemHandler
     public virtual byte[] ReadResponseBodyAsFile(string path)
     {
         Guard.NotNullOrEmpty(path);
-        path = PathUtils.CleanPath(path);
+        path = PathUtils.CleanPath(path)!;
         // If the file exists at the given path relative to the MappingsFolder, then return that.
         // Else the path will just be as-is.
         return File.ReadAllBytes(File.Exists(PathUtils.Combine(GetMappingFolder(), path)) ? PathUtils.Combine(GetMappingFolder(), path) : path);
@@ -92,7 +92,7 @@ public class LocalFileSystemHandler : IFileSystemHandler
     public virtual string ReadResponseBodyAsString(string path)
     {
         Guard.NotNullOrEmpty(path);
-        path = PathUtils.CleanPath(path);
+        path = PathUtils.CleanPath(path)!;
         // In case the path is a filename, the path will be adjusted to the MappingFolder.
         // Else the path will just be as-is.
         return File.ReadAllText(File.Exists(PathUtils.Combine(GetMappingFolder(), path)) ? PathUtils.Combine(GetMappingFolder(), path) : path);

src/WireMock.Net/Mapping.cs

@@ -139,13 +139,13 @@ public class Mapping : IMapping
         Probability = probability;
     }
 
-    /// <inheritdoc cref="IMapping.ProvideResponseAsync" />
+    /// <inheritdoc />
     public Task<(IResponseMessage Message, IMapping? Mapping)> ProvideResponseAsync(IRequestMessage requestMessage)
     {
         return Provider.ProvideResponseAsync(this, requestMessage, Settings);
     }
 
-    /// <inheritdoc cref="IMapping.GetRequestMatchResult" />
+    /// <inheritdoc />
     public IRequestMatchResult GetRequestMatchResult(IRequestMessage requestMessage, string? nextState)
     {
         var result = new RequestMatchResult();

src/WireMock.Net/Matchers/AbstractJsonPartialMatcher.cs

@@ -20,10 +20,8 @@ public abstract class AbstractJsonPartialMatcher : JsonMatcher
     /// </summary>
     /// <param name="value">The string value to check for equality.</param>
     /// <param name="ignoreCase">Ignore the case from the PropertyName and PropertyValue (string only).</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="regex">Support Regex.</param>
-    protected AbstractJsonPartialMatcher(string value, bool ignoreCase = false, bool throwException = false, bool regex = false)
+    protected AbstractJsonPartialMatcher(string value, bool ignoreCase = false, bool regex = false) : base(value, ignoreCase)
-        : base(value, ignoreCase, throwException)
     {
         Regex = regex;
     }
@@ -33,10 +31,8 @@ public abstract class AbstractJsonPartialMatcher : JsonMatcher
     /// </summary>
     /// <param name="value">The object value to check for equality.</param>
     /// <param name="ignoreCase">Ignore the case from the PropertyName and PropertyValue (string only).</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="regex">Support Regex.</param>
-    protected AbstractJsonPartialMatcher(object value, bool ignoreCase = false, bool throwException = false, bool regex = false)
+    protected AbstractJsonPartialMatcher(object value, bool ignoreCase = false, bool regex = false) : base(value, ignoreCase)
-        : base(value, ignoreCase, throwException)
     {
         Regex = regex;
     }
@@ -47,10 +43,8 @@ public abstract class AbstractJsonPartialMatcher : JsonMatcher
     /// <param name="matchBehaviour">The match behaviour.</param>
     /// <param name="value">The value to check for equality.</param>
     /// <param name="ignoreCase">Ignore the case from the PropertyName and PropertyValue (string only).</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="regex">Support Regex.</param>
-    protected AbstractJsonPartialMatcher(MatchBehaviour matchBehaviour, object value, bool ignoreCase = false, bool throwException = false, bool regex = false)
+    protected AbstractJsonPartialMatcher(MatchBehaviour matchBehaviour, object value, bool ignoreCase = false, bool regex = false) : base(matchBehaviour, value, ignoreCase)
-        : base(matchBehaviour, value, ignoreCase, throwException)
     {
         Regex = regex;
     }
@@ -75,10 +69,10 @@ public abstract class AbstractJsonPartialMatcher : JsonMatcher
         }
 
         if (input != null &&
-        	((value.Type == JTokenType.Guid && input.Type == JTokenType.String) ||
+            ((value.Type == JTokenType.Guid && input.Type == JTokenType.String) ||
-        	(value.Type == JTokenType.String && input.Type == JTokenType.Guid)))
+            (value.Type == JTokenType.String && input.Type == JTokenType.Guid)))
         {
-        	return IsMatch(value.ToString(), input.ToString());
+            return IsMatch(value.ToString(), input.ToString());
         }
 
         if (input == null || value.Type != input.Type)

src/WireMock.Net/Matchers/ContentTypeMatcher.cs

@@ -46,15 +46,13 @@ public class ContentTypeMatcher : WildcardMatcher
     /// <param name="matchBehaviour">The match behaviour.</param>
     /// <param name="patterns">The patterns.</param>
     /// <param name="ignoreCase">IgnoreCase (default false)</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
+    public ContentTypeMatcher(MatchBehaviour matchBehaviour, AnyOf<string, StringPattern>[] patterns, bool ignoreCase = false) : base(matchBehaviour, patterns, ignoreCase)
-    public ContentTypeMatcher(MatchBehaviour matchBehaviour, AnyOf<string, StringPattern>[] patterns, bool ignoreCase = false, bool throwException = false) :
-        base(matchBehaviour, patterns, ignoreCase, throwException)
     {
         _patterns = patterns;
     }
 
-    /// <inheritdoc cref="RegexMatcher.IsMatch"/>
+    /// <inheritdoc />
-    public override double IsMatch(string? input)
+    public override MatchResult IsMatch(string? input)
     {
         if (string.IsNullOrEmpty(input) || !MediaTypeHeaderValue.TryParse(input, out var contentType))
         {
@@ -64,12 +62,12 @@ public class ContentTypeMatcher : WildcardMatcher
         return base.IsMatch(contentType.MediaType);
     }
 
-    /// <inheritdoc cref="IStringMatcher.GetPatterns"/>
+    /// <inheritdoc />
     public override AnyOf<string, StringPattern>[] GetPatterns()
     {
         return _patterns;
     }
 
-    /// <inheritdoc cref="IMatcher.Name"/>
+    /// <inheritdoc />
-    public override string Name => "ContentTypeMatcher";
+    public override string Name => nameof(ContentTypeMatcher);
 }

src/WireMock.Net/Matchers/ExactMatcher.cs

@@ -14,17 +14,14 @@ public class ExactMatcher : IStringMatcher, IIgnoreCaseMatcher
 {
     private readonly AnyOf<string, StringPattern>[] _values;
 
-    /// <inheritdoc cref="IMatcher.MatchBehaviour"/>
+    /// <inheritdoc />
     public MatchBehaviour MatchBehaviour { get; }
 
-    /// <inheritdoc cref="IMatcher.ThrowException"/>
-    public bool ThrowException { get; }
-
     /// <summary>
     /// Initializes a new instance of the <see cref="ExactMatcher"/> class.
     /// </summary>
     /// <param name="values">The values.</param>
-    public ExactMatcher(params AnyOf<string, StringPattern>[] values) : this(MatchBehaviour.AcceptOnMatch, false, false, MatchOperator.Or, values)
+    public ExactMatcher(params AnyOf<string, StringPattern>[] values) : this(MatchBehaviour.AcceptOnMatch, false, MatchOperator.Or, values)
     {
     }
 
@@ -33,7 +30,7 @@ public class ExactMatcher : IStringMatcher, IIgnoreCaseMatcher
     /// </summary>
     /// <param name="ignoreCase">Ignore the case from the pattern(s).</param>
     /// <param name="values">The values.</param>
-    public ExactMatcher(bool ignoreCase, params AnyOf<string, StringPattern>[] values) : this(MatchBehaviour.AcceptOnMatch, ignoreCase, false, MatchOperator.Or, values)
+    public ExactMatcher(bool ignoreCase, params AnyOf<string, StringPattern>[] values) : this(MatchBehaviour.AcceptOnMatch, ignoreCase, MatchOperator.Or, values)
     {
     }
 
@@ -42,36 +39,33 @@ public class ExactMatcher : IStringMatcher, IIgnoreCaseMatcher
     /// </summary>
     /// <param name="matchBehaviour">The match behaviour.</param>
     /// <param name="ignoreCase">Ignore the case from the pattern(s).</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="matchOperator">The <see cref="Matchers.MatchOperator"/> to use. (default = "Or")</param>
     /// <param name="values">The values.</param>
     public ExactMatcher(
         MatchBehaviour matchBehaviour,
         bool ignoreCase = false,
-        bool throwException = false,
         MatchOperator matchOperator = MatchOperator.Or,
         params AnyOf<string, StringPattern>[] values)
     {
         _values = Guard.NotNull(values);
 
         MatchBehaviour = matchBehaviour;
-        ThrowException = throwException;
         IgnoreCase = ignoreCase;
         MatchOperator = matchOperator;
     }
 
-    /// <inheritdoc cref="IStringMatcher.IsMatch"/>
+    /// <inheritdoc />
-    public double IsMatch(string? input)
+    public MatchResult IsMatch(string? input)
     {
         Func<string?, bool> equals = IgnoreCase
             ? pattern => string.Equals(pattern, input, StringComparison.OrdinalIgnoreCase)
             : pattern => pattern == input;
 
-        double score = MatchScores.ToScore(_values.Select(v => equals(v)).ToArray(), MatchOperator);
+        var score = MatchScores.ToScore(_values.Select(v => equals(v)).ToArray(), MatchOperator);
-        return MatchBehaviourHelper.Convert(MatchBehaviour, score);
+        return new MatchResult(MatchBehaviourHelper.Convert(MatchBehaviour, score));
     }
 
-    /// <inheritdoc cref="IStringMatcher.GetPatterns"/>
+    /// <inheritdoc />
     public AnyOf<string, StringPattern>[] GetPatterns()
     {
         return _values;
@@ -80,7 +74,7 @@ public class ExactMatcher : IStringMatcher, IIgnoreCaseMatcher
     /// <inheritdoc />
     public MatchOperator MatchOperator { get; }
 
-    /// <inheritdoc cref="IMatcher.Name"/>
+    /// <inheritdoc />
     public string Name => "ExactMatcher";
 
     /// <inheritdoc />

src/WireMock.Net/Matchers/ExactObjectMatcher.cs

@@ -19,12 +19,9 @@ public class ExactObjectMatcher : IObjectMatcher
     /// </summary>
     public byte[]? ValueAsBytes { get; }
 
-    /// <inheritdoc cref="IMatcher.MatchBehaviour"/>
+    /// <inheritdoc />
     public MatchBehaviour MatchBehaviour { get; }
 
-    /// <inheritdoc cref="IMatcher.ThrowException"/>
-    public bool ThrowException { get; }
-
     /// <summary>
     /// Initializes a new instance of the <see cref="ExactObjectMatcher"/> class.
     /// </summary>
@@ -56,17 +53,15 @@ public class ExactObjectMatcher : IObjectMatcher
     /// Initializes a new instance of the <see cref="ExactObjectMatcher"/> class.
     /// </summary>
     /// <param name="matchBehaviour">The match behaviour.</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="value">The value.</param>
-    public ExactObjectMatcher(MatchBehaviour matchBehaviour, byte[] value, bool throwException = false)
+    public ExactObjectMatcher(MatchBehaviour matchBehaviour, byte[] value)
     {
         ValueAsBytes = Guard.NotNull(value);
         MatchBehaviour = matchBehaviour;
-        ThrowException = throwException;
     }
 
-    /// <inheritdoc cref="IObjectMatcher.IsMatch"/>
+    /// <inheritdoc />
-    public double IsMatch(object? input)
+    public MatchResult IsMatch(object? input)
     {
         bool equals = false;
         if (ValueAsObject != null)
@@ -81,6 +76,6 @@ public class ExactObjectMatcher : IObjectMatcher
         return MatchBehaviourHelper.Convert(MatchBehaviour, MatchScores.ToScore(equals));
     }
 
-    /// <inheritdoc cref="IMatcher.Name"/>
+    /// <inheritdoc />
     public string Name => "ExactObjectMatcher";
 }

src/WireMock.Net/Matchers/GraphQLMatcher.cs

@@ -1,12 +1,14 @@
 #if GRAPHQL
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using AnyOfTypes;
 using GraphQL;
 using GraphQL.Types;
 using Newtonsoft.Json;
 using Stef.Validation;
+using WireMock.Extensions;
 using WireMock.Models;
 
 namespace WireMock.Matchers;
@@ -19,8 +21,10 @@ public class GraphQLMatcher : IStringMatcher
 {
     private sealed class GraphQLRequest
     {
+        // ReSharper disable once UnusedAutoPropertyAccessor.Local
         public string? Query { get; set; }
 
+        // ReSharper disable once UnusedAutoPropertyAccessor.Local
         public Dictionary<string, object?>? Variables { get; set; }
     }
 
@@ -31,21 +35,16 @@ public class GraphQLMatcher : IStringMatcher
     /// <inheritdoc />
     public MatchBehaviour MatchBehaviour { get; }
 
-    /// <inheritdoc />
-    public bool ThrowException { get; }
-
     /// <summary>
     /// Initializes a new instance of the <see cref="LinqMatcher"/> class.
     /// </summary>
     /// <param name="schema">The schema.</param>
     /// <param name="matchBehaviour">The match behaviour.</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="matchOperator">The <see cref="Matchers.MatchOperator"/> to use. (default = "Or")</param>
-    public GraphQLMatcher(AnyOf<string, StringPattern, ISchema> schema, MatchBehaviour matchBehaviour = MatchBehaviour.AcceptOnMatch, bool throwException = false, MatchOperator matchOperator = MatchOperator.Or)
+    public GraphQLMatcher(AnyOf<string, StringPattern, ISchema> schema, MatchBehaviour matchBehaviour = MatchBehaviour.AcceptOnMatch, MatchOperator matchOperator = MatchOperator.Or)
     {
         Guard.NotNull(schema);
         MatchBehaviour = matchBehaviour;
-        ThrowException = throwException;
         MatchOperator = matchOperator;
 
         var patterns = new List<AnyOf<string, StringPattern>>();
@@ -72,51 +71,44 @@ public class GraphQLMatcher : IStringMatcher
     }
 
     /// <inheritdoc />
-    public double IsMatch(string? input)
+    public MatchResult IsMatch(string? input)
     {
-        var match = MatchScores.Mismatch;
+        var score = MatchScores.Mismatch;
+        Exception? exception = null;
 
-        try
+        if (input != null && TryGetGraphQLRequest(input, out var graphQLRequest))
         {
-            var graphQLRequest = JsonConvert.DeserializeObject<GraphQLRequest>(input!)!;
+            try
-
-            var executionResult = new DocumentExecuter().ExecuteAsync(_ =>
             {
-                _.ThrowOnUnhandledException = true;
+                var executionResult = new DocumentExecuter().ExecuteAsync(_ =>
-
-                _.Schema = _schema;
-                _.Query = graphQLRequest.Query;
-
-                if (graphQLRequest.Variables != null)
                 {
-                    _.Variables = new Inputs(graphQLRequest.Variables);
+                    _.ThrowOnUnhandledException = true;
-                }
-            }).GetAwaiter().GetResult();
 
-            if (executionResult.Errors == null || executionResult.Errors.Count == 0)
+                    _.Schema = _schema;
-            {
+                    _.Query = graphQLRequest.Query;
-                match = MatchScores.Perfect;
+
-            }
+                    if (graphQLRequest.Variables != null)
-            else
+                    {
-            {
+                        _.Variables = new Inputs(graphQLRequest.Variables);
-                var exceptions = executionResult.Errors.OfType<Exception>().ToArray();
+                    }
-                if (exceptions.Length == 1)
+                }).GetAwaiter().GetResult();
+
+                if (executionResult.Errors == null || executionResult.Errors.Count == 0)
                 {
-                    throw exceptions[0];
+                    score = MatchScores.Perfect;
+                }
+                else
+                {
+                    exception = executionResult.Errors.OfType<Exception>().ToArray().ToException();
                 }
-
-                throw new AggregateException(exceptions);
             }
-        }
+            catch (Exception ex)
-        catch
-        {
-            if (ThrowException)
             {
-                throw;
+                exception = ex;
             }
         }
 
-        return MatchBehaviourHelper.Convert(MatchBehaviour, match);
+        return new MatchResult(MatchBehaviourHelper.Convert(MatchBehaviour, score), exception);
     }
 
     /// <inheritdoc />
@@ -131,6 +123,20 @@ public class GraphQLMatcher : IStringMatcher
     /// <inheritdoc />
     public string Name => nameof(GraphQLMatcher);
 
+    private static bool TryGetGraphQLRequest(string input, [NotNullWhen(true)] out GraphQLRequest? graphQLRequest)
+    {
+        try
+        {
+            graphQLRequest = JsonConvert.DeserializeObject<GraphQLRequest>(input);
+            return graphQLRequest != null;
+        }
+        catch
+        {
+            graphQLRequest = default;
+            return false;
+        }
+    }
+
     private static ISchema BuildSchema(string schema)
     {
         return Schema.For(schema);

src/WireMock.Net/Matchers/Helpers/BodyDataMatchScoreCalculator.cs

@@ -6,7 +6,7 @@ namespace WireMock.Matchers.Helpers;
 
 internal static class BodyDataMatchScoreCalculator
 {
-    public static double CalculateMatchScore(IBodyData? requestMessage, IMatcher matcher)
+    public static MatchResult CalculateMatchScore(IBodyData? requestMessage, IMatcher matcher)
     {
         Guard.NotNull(matcher);
 
@@ -23,7 +23,7 @@ internal static class BodyDataMatchScoreCalculator
                     return notNullOrEmptyMatcher.IsMatch(requestMessage.BodyAsBytes);
 
                 default:
-                    return MatchScores.Mismatch;
+                    return default;
             }
         }
 
@@ -63,16 +63,6 @@ internal static class BodyDataMatchScoreCalculator
             }
         }
 
-#if MIMEKIT_XXX
+        return default;
-        if (matcher is MultiPartMatcher multiPartMatcher)
-        {
-            // If the body is a String or MultiPart, use the BodyAsString to match on.
-            if (requestMessage?.DetectedBodyType is BodyType.String or BodyType.MultiPart)
-            {
-                return multiPartMatcher.IsMatch(requestMessage.BodyAsString);
-            }
-        }
-#endif
-        return MatchScores.Mismatch;
     }
 }

src/WireMock.Net/Matchers/IMatcher.cs

@@ -14,9 +14,4 @@ public interface IMatcher
     /// Gets the match behaviour.
     /// </summary>
     MatchBehaviour MatchBehaviour { get; }
-
-    /// <summary>
-    /// Should this matcher throw an exception?
-    /// </summary>
-    bool ThrowException { get; }
 }

src/WireMock.Net/Matchers/IObjectMatcher.cs

@@ -9,6 +9,6 @@ public interface IObjectMatcher : IMatcher
     /// Determines whether the specified input is match.
     /// </summary>
     /// <param name="input">The input.</param>
-    /// <returns>A value between 0.0 - 1.0 of the similarity.</returns>
+    /// <returns>MatchResult</returns>
-    double IsMatch(object? input);
+    MatchResult IsMatch(object? input);
 }

src/WireMock.Net/Matchers/IStringMatcher.cs

@@ -13,8 +13,8 @@ public interface IStringMatcher : IMatcher
     /// Determines whether the specified input is match.
     /// </summary>
     /// <param name="input">The input.</param>
-    /// <returns>A value between 0.0 - 1.0 of the similarity.</returns>
+    /// <returns>MatchResult</returns>
-    double IsMatch(string? input);
+    MatchResult IsMatch(string? input);
 
     /// <summary>
     /// Gets the patterns.

src/WireMock.Net/Matchers/JSONPathMatcher.cs

@@ -1,6 +1,6 @@
+using System;
 using System.Linq;
 using AnyOfTypes;
-using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
 using Stef.Validation;
 using WireMock.Extensions;
@@ -17,17 +17,15 @@ public class JsonPathMatcher : IStringMatcher, IObjectMatcher
 {
     private readonly AnyOf<string, StringPattern>[] _patterns;
 
-    /// <inheritdoc cref="IMatcher.MatchBehaviour"/>
+    /// <inheritdoc />
     public MatchBehaviour MatchBehaviour { get; }
 
-    /// <inheritdoc cref="IMatcher.ThrowException"/>
-    public bool ThrowException { get; }
-
     /// <summary>
     /// Initializes a new instance of the <see cref="JsonPathMatcher"/> class.
     /// </summary>
     /// <param name="patterns">The patterns.</param>
-    public JsonPathMatcher(params string[] patterns) : this(MatchBehaviour.AcceptOnMatch, false, MatchOperator.Or, patterns.ToAnyOfPatterns())
+    public JsonPathMatcher(params string[] patterns) : this(MatchBehaviour.AcceptOnMatch, MatchOperator.Or,
+        patterns.ToAnyOfPatterns())
     {
     }
 
@@ -35,7 +33,8 @@ public class JsonPathMatcher : IStringMatcher, IObjectMatcher
     /// Initializes a new instance of the <see cref="JsonPathMatcher"/> class.
     /// </summary>
     /// <param name="patterns">The patterns.</param>
-    public JsonPathMatcher(params AnyOf<string, StringPattern>[] patterns) : this(MatchBehaviour.AcceptOnMatch, false, MatchOperator.Or, patterns)
+    public JsonPathMatcher(params AnyOf<string, StringPattern>[] patterns) : this(MatchBehaviour.AcceptOnMatch,
+        MatchOperator.Or, patterns)
     {
     }
 
@@ -43,48 +42,45 @@ public class JsonPathMatcher : IStringMatcher, IObjectMatcher
     /// Initializes a new instance of the <see cref="JsonPathMatcher"/> class.
     /// </summary>
     /// <param name="matchBehaviour">The match behaviour.</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="matchOperator">The <see cref="Matchers.MatchOperator"/> to use. (default = "Or")</param>
     /// <param name="patterns">The patterns.</param>
     public JsonPathMatcher(
         MatchBehaviour matchBehaviour,
-        bool throwException = false,
         MatchOperator matchOperator = MatchOperator.Or,
         params AnyOf<string, StringPattern>[] patterns)
     {
         _patterns = Guard.NotNull(patterns);
         MatchBehaviour = matchBehaviour;
-        ThrowException = throwException;
         MatchOperator = matchOperator;
     }
 
-    /// <inheritdoc cref="IStringMatcher.IsMatch"/>
+    /// <inheritdoc />
-    public double IsMatch(string? input)
+    public MatchResult IsMatch(string? input)
     {
-        double match = MatchScores.Mismatch;
+        var score = MatchScores.Mismatch;
+        Exception? exception = null;
+
         if (input != null)
         {
             try
             {
                 var jToken = JToken.Parse(input);
-                match = IsMatch(jToken);
+                score = IsMatch(jToken);
             }
-            catch (JsonException)
+            catch (Exception ex)
             {
-                if (ThrowException)
+                exception = ex;
-                {
-                    throw;
-                }
             }
         }
 
-        return MatchBehaviourHelper.Convert(MatchBehaviour, match);
+        return new MatchResult(MatchBehaviourHelper.Convert(MatchBehaviour, score), exception);
     }
 
-    /// <inheritdoc cref="IObjectMatcher.IsMatch"/>
+    /// <inheritdoc />
-    public double IsMatch(object? input)
+    public MatchResult IsMatch(object? input)
     {
-        double match = MatchScores.Mismatch;
+        var score = MatchScores.Mismatch;
+        Exception? exception = null;
 
         // When input is null or byte[], return Mismatch.
         if (input != null && !(input is byte[]))
@@ -93,18 +89,15 @@ public class JsonPathMatcher : IStringMatcher, IObjectMatcher
             {
                 // Check if JToken or object
                 JToken jToken = input as JToken ?? JObject.FromObject(input);
-                match = IsMatch(jToken);
+                score = IsMatch(jToken);
             }
-            catch (JsonException)
+            catch (Exception ex)
             {
-                if (ThrowException)
+                exception = ex;
-                {
-                    throw;
-                }
             }
         }
 
-        return MatchBehaviourHelper.Convert(MatchBehaviour, match);
+        return new MatchResult(MatchBehaviourHelper.Convert(MatchBehaviour, score), exception);
     }
 
     /// <inheritdoc />
@@ -116,7 +109,7 @@ public class JsonPathMatcher : IStringMatcher, IObjectMatcher
     /// <inheritdoc />
     public MatchOperator MatchOperator { get; }
 
-    /// <inheritdoc cref="IMatcher.Name"/>
+    /// <inheritdoc />
     public string Name => "JsonPathMatcher";
 
     private double IsMatch(JToken jToken)
@@ -125,7 +118,8 @@ public class JsonPathMatcher : IStringMatcher, IObjectMatcher
 
         // The SelectToken method can accept a string path to a child token ( i.e. "Manufacturers[0].Products[0].Price").
         // In that case it will return a JValue (some type) which does not implement the IEnumerable interface.
-        return MatchScores.ToScore(_patterns.Select(pattern => array.SelectToken(pattern.GetPattern()) != null).ToArray(), MatchOperator);
+        return MatchScores.ToScore(
+            _patterns.Select(pattern => array.SelectToken(pattern.GetPattern()) != null).ToArray(), MatchOperator);
     }
 
     // https://github.com/WireMock-Net/WireMock.Net/issues/965

src/WireMock.Net/Matchers/JmesPathMatcher.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Linq;
 using AnyOfTypes;
 using DevLab.JmesPath;
@@ -15,17 +16,14 @@ public class JmesPathMatcher : IStringMatcher, IObjectMatcher
 {
     private readonly AnyOf<string, StringPattern>[] _patterns;
 
-    /// <inheritdoc cref="IMatcher.MatchBehaviour"/>
+    /// <inheritdoc />
     public MatchBehaviour MatchBehaviour { get; }
 
-    /// <inheritdoc cref="IMatcher.ThrowException"/>
-    public bool ThrowException { get; }
-
     /// <summary>
     /// Initializes a new instance of the <see cref="JmesPathMatcher"/> class.
     /// </summary>
     /// <param name="patterns">The patterns.</param>
-    public JmesPathMatcher(params string[] patterns) : this(MatchBehaviour.AcceptOnMatch, false, MatchOperator.Or, patterns.ToAnyOfPatterns())
+    public JmesPathMatcher(params string[] patterns) : this(MatchBehaviour.AcceptOnMatch, MatchOperator.Or, patterns.ToAnyOfPatterns())
     {
     }
 
@@ -33,18 +31,17 @@ public class JmesPathMatcher : IStringMatcher, IObjectMatcher
     /// Initializes a new instance of the <see cref="JmesPathMatcher"/> class.
     /// </summary>
     /// <param name="patterns">The patterns.</param>
-    public JmesPathMatcher(params AnyOf<string, StringPattern>[] patterns) : this(MatchBehaviour.AcceptOnMatch, false, MatchOperator.Or, patterns)
+    public JmesPathMatcher(params AnyOf<string, StringPattern>[] patterns) : this(MatchBehaviour.AcceptOnMatch, MatchOperator.Or, patterns)
     {
     }
 
     /// <summary>
     /// Initializes a new instance of the <see cref="JmesPathMatcher"/> class.
     /// </summary>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="matchOperator">The <see cref="Matchers.MatchOperator"/> to use.</param>
     /// <param name="patterns">The patterns.</param>
-    public JmesPathMatcher(bool throwException = false, MatchOperator matchOperator = MatchOperator.Or, params AnyOf<string, StringPattern>[] patterns) :
+    public JmesPathMatcher(MatchOperator matchOperator = MatchOperator.Or, params AnyOf<string, StringPattern>[] patterns) :
-        this(MatchBehaviour.AcceptOnMatch, throwException, matchOperator, patterns)
+        this(MatchBehaviour.AcceptOnMatch, matchOperator, patterns)
     {
     }
 
@@ -52,60 +49,56 @@ public class JmesPathMatcher : IStringMatcher, IObjectMatcher
     /// Initializes a new instance of the <see cref="JmesPathMatcher"/> class.
     /// </summary>
     /// <param name="matchBehaviour">The match behaviour.</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="matchOperator">The <see cref="Matchers.MatchOperator"/> to use.</param>
     /// <param name="patterns">The patterns.</param>
     public JmesPathMatcher(
         MatchBehaviour matchBehaviour,
-        bool throwException = false,
         MatchOperator matchOperator = MatchOperator.Or,
         params AnyOf<string, StringPattern>[] patterns)
     {
         _patterns = Guard.NotNull(patterns);
         MatchBehaviour = matchBehaviour;
-        ThrowException = throwException;
         MatchOperator = matchOperator;
     }
 
-    /// <inheritdoc cref="IStringMatcher.IsMatch"/>
+    /// <inheritdoc />
-    public double IsMatch(string? input)
+    public MatchResult IsMatch(string? input)
     {
-        double match = MatchScores.Mismatch;
+        var score = MatchScores.Mismatch;
+        Exception? exception = null;
+
         if (input != null)
         {
             try
             {
                 var results = _patterns.Select(pattern => bool.Parse(new JmesPath().Transform(input, pattern.GetPattern()))).ToArray();
-                match = MatchScores.ToScore(results, MatchOperator);
+                score = MatchScores.ToScore(results, MatchOperator);
             }
-            catch (JsonException)
+            catch (Exception ex)
             {
-                if (ThrowException)
+                exception = ex;
-                {
-                    throw;
-                }
             }
         }
 
-        return MatchBehaviourHelper.Convert(MatchBehaviour, match);
+        return new MatchResult(MatchBehaviourHelper.Convert(MatchBehaviour, score), exception);
     }
 
-    /// <inheritdoc cref="IObjectMatcher.IsMatch"/>
+    /// <inheritdoc />
-    public double IsMatch(object? input)
+    public MatchResult IsMatch(object? input)
     {
-        double match = MatchScores.Mismatch;
+        var score = MatchScores.Mismatch;
 
         // When input is null or byte[], return Mismatch.
         if (input != null && !(input is byte[]))
         {
-            string inputAsString = JsonConvert.SerializeObject(input);
+            var inputAsString = JsonConvert.SerializeObject(input);
             return IsMatch(inputAsString);
         }
 
-        return MatchBehaviourHelper.Convert(MatchBehaviour, match);
+        return MatchBehaviourHelper.Convert(MatchBehaviour, score);
     }
 
-    /// <inheritdoc cref="IStringMatcher.GetPatterns"/>
+    /// <inheritdoc />
     public AnyOf<string, StringPattern>[] GetPatterns()
     {
         return _patterns;
@@ -114,6 +107,6 @@ public class JmesPathMatcher : IStringMatcher, IObjectMatcher
     /// <inheritdoc />
     public MatchOperator MatchOperator { get; }
 
-    /// <inheritdoc cref="IMatcher.Name"/>
+    /// <inheritdoc />
-    public string Name => "JmesPathMatcher";
+    public string Name => nameof(JmesPathMatcher);
 }

src/WireMock.Net/Matchers/JsonMatcher.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Collections;
 using System.Linq;
-using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
 using Stef.Validation;
 using WireMock.Util;
@@ -13,21 +12,18 @@ namespace WireMock.Matchers;
 /// </summary>
 public class JsonMatcher : IValueMatcher, IIgnoreCaseMatcher
 {
-    /// <inheritdoc cref="IMatcher.Name"/>
+    /// <inheritdoc />
     public virtual string Name => "JsonMatcher";
 
     /// <inheritdoc cref="IValueMatcher.Value"/>
     public object Value { get; }
 
-    /// <inheritdoc cref="IMatcher.MatchBehaviour"/>
+    /// <inheritdoc />
     public MatchBehaviour MatchBehaviour { get; }
 
     /// <inheritdoc cref="IIgnoreCaseMatcher.IgnoreCase"/>
     public bool IgnoreCase { get; }
 
-    /// <inheritdoc cref="IMatcher.ThrowException"/>
-    public bool ThrowException { get; }
-
     private readonly JToken _valueAsJToken;
     private readonly Func<JToken, JToken> _jTokenConverter;
 
@@ -36,8 +32,7 @@ public class JsonMatcher : IValueMatcher, IIgnoreCaseMatcher
     /// </summary>
     /// <param name="value">The string value to check for equality.</param>
     /// <param name="ignoreCase">Ignore the case from the PropertyName and PropertyValue (string only).</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
+    public JsonMatcher(string value, bool ignoreCase = false) : this(MatchBehaviour.AcceptOnMatch, value, ignoreCase)
-    public JsonMatcher(string value, bool ignoreCase = false, bool throwException = false) : this(MatchBehaviour.AcceptOnMatch, value, ignoreCase, throwException)
     {
     }
 
@@ -46,8 +41,7 @@ public class JsonMatcher : IValueMatcher, IIgnoreCaseMatcher
     /// </summary>
     /// <param name="value">The object value to check for equality.</param>
     /// <param name="ignoreCase">Ignore the case from the PropertyName and PropertyValue (string only).</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
+    public JsonMatcher(object value, bool ignoreCase = false) : this(MatchBehaviour.AcceptOnMatch, value, ignoreCase)
-    public JsonMatcher(object value, bool ignoreCase = false, bool throwException = false) : this(MatchBehaviour.AcceptOnMatch, value, ignoreCase, throwException)
     {
     }
 
@@ -57,24 +51,23 @@ public class JsonMatcher : IValueMatcher, IIgnoreCaseMatcher
     /// <param name="matchBehaviour">The match behaviour.</param>
     /// <param name="value">The value to check for equality.</param>
     /// <param name="ignoreCase">Ignore the case from the PropertyName and PropertyValue (string only).</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
+    public JsonMatcher(MatchBehaviour matchBehaviour, object value, bool ignoreCase = false)
-    public JsonMatcher(MatchBehaviour matchBehaviour, object value, bool ignoreCase = false, bool throwException = false)
     {
         Guard.NotNull(value, nameof(value));
 
         MatchBehaviour = matchBehaviour;
         IgnoreCase = ignoreCase;
-        ThrowException = throwException;
 
         Value = value;
         _valueAsJToken = ConvertValueToJToken(value);
         _jTokenConverter = ignoreCase ? Rename : jToken => jToken;
     }
 
-    /// <inheritdoc cref="IObjectMatcher.IsMatch"/>
+    /// <inheritdoc />
-    public double IsMatch(object? input)
+    public MatchResult IsMatch(object? input)
     {
-        bool match = false;
+        var score = MatchScores.Mismatch;
+        Exception? error = null;
 
         // When input is null or byte[], return Mismatch.
         if (input != null && input is not byte[])
@@ -83,20 +76,16 @@ public class JsonMatcher : IValueMatcher, IIgnoreCaseMatcher
             {
                 var inputAsJToken = ConvertValueToJToken(input);
 
-                match = IsMatch(
+                var match = IsMatch(_jTokenConverter(_valueAsJToken), _jTokenConverter(inputAsJToken));
-                    _jTokenConverter(_valueAsJToken),
+                score = MatchScores.ToScore(match);
-                    _jTokenConverter(inputAsJToken));
             }
-            catch (JsonException)
+            catch (Exception ex)
             {
-                if (ThrowException)
+                error = ex;
-                {
-                    throw;
-                }
             }
         }
 
-        return MatchBehaviourHelper.Convert(MatchBehaviour, MatchScores.ToScore(match));
+        return new MatchResult(MatchBehaviourHelper.Convert(MatchBehaviour, score), error);
     }
 
     /// <summary>

src/WireMock.Net/Matchers/JsonPartialMatcher.cs

@@ -9,27 +9,27 @@ public class JsonPartialMatcher : AbstractJsonPartialMatcher
     public override string Name => nameof(JsonPartialMatcher);
 
     /// <inheritdoc />
-    public JsonPartialMatcher(string value, bool ignoreCase = false, bool throwException = false, bool regex = false)
+    public JsonPartialMatcher(string value, bool ignoreCase = false, bool regex = false)
-        : base(value, ignoreCase, throwException, regex)
+        : base(value, ignoreCase, regex)
     {
     }
 
     /// <inheritdoc />
-    public JsonPartialMatcher(object value, bool ignoreCase = false, bool throwException = false, bool regex = false)
+    public JsonPartialMatcher(object value, bool ignoreCase = false, bool regex = false)
-        : base(value, ignoreCase, throwException, regex)
+        : base(value, ignoreCase, regex)
     {
     }
 
     /// <inheritdoc />
-    public JsonPartialMatcher(MatchBehaviour matchBehaviour, object value, bool ignoreCase = false, bool throwException = false, bool regex = false)
+    public JsonPartialMatcher(MatchBehaviour matchBehaviour, object value, bool ignoreCase = false, bool regex = false)
-        : base(matchBehaviour, value, ignoreCase, throwException, regex)
+        : base(matchBehaviour, value, ignoreCase, regex)
     {
     }
 
     /// <inheritdoc />
     protected override bool IsMatch(string value, string input)
     {
-        var exactStringMatcher = new ExactMatcher(MatchBehaviour.AcceptOnMatch, IgnoreCase, ThrowException, MatchOperator.Or, value);
+        var exactStringMatcher = new ExactMatcher(MatchBehaviour.AcceptOnMatch, IgnoreCase, MatchOperator.Or, value);
-        return MatchScores.IsPerfect(exactStringMatcher.IsMatch(input));
+        return exactStringMatcher.IsMatch(input).IsPerfect();
     }
 }

src/WireMock.Net/Matchers/JsonPartialWildCardMatcher.cs

@@ -9,20 +9,20 @@ public class JsonPartialWildcardMatcher : AbstractJsonPartialMatcher
     public override string Name => nameof(JsonPartialWildcardMatcher);
 
     /// <inheritdoc />
-    public JsonPartialWildcardMatcher(string value, bool ignoreCase = false, bool throwException = false, bool regex = false)
+    public JsonPartialWildcardMatcher(string value, bool ignoreCase = false, bool regex = false)
-        : base(value, ignoreCase, throwException, regex)
+        : base(value, ignoreCase, regex)
     {
     }
 
     /// <inheritdoc />
-    public JsonPartialWildcardMatcher(object value, bool ignoreCase = false, bool throwException = false, bool regex = false)
+    public JsonPartialWildcardMatcher(object value, bool ignoreCase = false, bool regex = false)
-        : base(value, ignoreCase, throwException, regex)
+        : base(value, ignoreCase, regex)
     {
     }
 
     /// <inheritdoc />
-    public JsonPartialWildcardMatcher(MatchBehaviour matchBehaviour, object value, bool ignoreCase = false, bool throwException = false, bool regex = false)
+    public JsonPartialWildcardMatcher(MatchBehaviour matchBehaviour, object value, bool ignoreCase = false, bool regex = false)
-        : base(matchBehaviour, value, ignoreCase, throwException, regex)
+        : base(matchBehaviour, value, ignoreCase, regex)
     {
     }
 
@@ -30,6 +30,6 @@ public class JsonPartialWildcardMatcher : AbstractJsonPartialMatcher
     protected override bool IsMatch(string value, string input)
     {
         var wildcardStringMatcher = new WildcardMatcher(MatchBehaviour.AcceptOnMatch, value, IgnoreCase);
-        return MatchScores.IsPerfect(wildcardStringMatcher.IsMatch(input));
+        return wildcardStringMatcher.IsMatch(input).IsPerfect();
     }
 }

src/WireMock.Net/Matchers/LinqMatcher.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Linq;
 using System.Linq.Dynamic.Core;
 using AnyOfTypes;
@@ -18,12 +19,9 @@ public class LinqMatcher : IObjectMatcher, IStringMatcher
 {
     private readonly AnyOf<string, StringPattern>[] _patterns;
 
-    /// <inheritdoc cref="IMatcher.MatchBehaviour"/>
+    /// <inheritdoc />
     public MatchBehaviour MatchBehaviour { get; }
 
-    /// <inheritdoc cref="IMatcher.ThrowException"/>
-    public bool ThrowException { get; }
-
     /// <summary>
     /// Initializes a new instance of the <see cref="LinqMatcher"/> class.
     /// </summary>
@@ -36,7 +34,7 @@ public class LinqMatcher : IObjectMatcher, IStringMatcher
     /// Initializes a new instance of the <see cref="LinqMatcher"/> class.
     /// </summary>
     /// <param name="patterns">The patterns.</param>
-    public LinqMatcher(params AnyOf<string, StringPattern>[] patterns) : this(MatchBehaviour.AcceptOnMatch, false, MatchOperator.Or, patterns)
+    public LinqMatcher(params AnyOf<string, StringPattern>[] patterns) : this(MatchBehaviour.AcceptOnMatch, MatchOperator.Or, patterns)
     {
     }
 
@@ -45,7 +43,7 @@ public class LinqMatcher : IObjectMatcher, IStringMatcher
     /// </summary>
     /// <param name="matchBehaviour">The match behaviour.</param>
     /// <param name="pattern">The pattern.</param>
-    public LinqMatcher(MatchBehaviour matchBehaviour, AnyOf<string, StringPattern> pattern) : this(matchBehaviour, false, MatchOperator.Or, pattern)
+    public LinqMatcher(MatchBehaviour matchBehaviour, AnyOf<string, StringPattern> pattern) : this(matchBehaviour, MatchOperator.Or, pattern)
     {
     }
 
@@ -53,25 +51,23 @@ public class LinqMatcher : IObjectMatcher, IStringMatcher
     /// Initializes a new instance of the <see cref="LinqMatcher"/> class.
     /// </summary>
     /// <param name="matchBehaviour">The match behaviour.</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="matchOperator">The <see cref="Matchers.MatchOperator"/> to use. (default = "Or")</param>
     /// <param name="patterns">The patterns.</param>
     public LinqMatcher(
         MatchBehaviour matchBehaviour,
-        bool throwException = false,
         MatchOperator matchOperator = MatchOperator.Or,
         params AnyOf<string, StringPattern>[] patterns)
     {
         _patterns = Guard.NotNull(patterns);
         MatchBehaviour = matchBehaviour;
-        ThrowException = throwException;
         MatchOperator = matchOperator;
     }
 
     /// <inheritdoc />
-    public double IsMatch(string? input)
+    public MatchResult IsMatch(string? input)
     {
-        double match = MatchScores.Mismatch;
+        var score = MatchScores.Mismatch;
+        Exception? error = null;
 
         // Convert a single input string to a Queryable string-list with 1 entry.
         IQueryable queryable = new[] { input }.AsQueryable();
@@ -79,25 +75,21 @@ public class LinqMatcher : IObjectMatcher, IStringMatcher
         try
         {
             // Use the Any(...) method to check if the result matches
-            match = MatchScores.ToScore(_patterns.Select(pattern => queryable.Any(pattern.GetPattern())).ToArray(), MatchOperator);
+            score = MatchScores.ToScore(_patterns.Select(pattern => queryable.Any(pattern.GetPattern())).ToArray(), MatchOperator);
-
-            return MatchBehaviourHelper.Convert(MatchBehaviour, match);
         }
-        catch
+        catch (Exception e)
         {
-            if (ThrowException)
+            error = e;
-            {
-                throw;
-            }
         }
 
-        return MatchBehaviourHelper.Convert(MatchBehaviour, match);
+        return new MatchResult(MatchBehaviourHelper.Convert(MatchBehaviour, score), error);
     }
 
     /// <inheritdoc />
-    public double IsMatch(object? input)
+    public MatchResult IsMatch(object? input)
     {
-        double match = MatchScores.Mismatch;
+        var score = MatchScores.Mismatch;
+        Exception? error = null;
 
         JArray jArray;
         try
@@ -106,7 +98,7 @@ public class LinqMatcher : IObjectMatcher, IStringMatcher
         }
         catch
         {
-            jArray = new JArray { JToken.FromObject(input) };
+            jArray = input == null ? new JArray() : new JArray { JToken.FromObject(input) };
         }
 
         // Convert a single object to a Queryable JObject-list with 1 entry.
@@ -117,19 +109,14 @@ public class LinqMatcher : IObjectMatcher, IStringMatcher
             var patternsAsStringArray = _patterns.Select(p => p.GetPattern()).ToArray();
             var scores = patternsAsStringArray.Select(p => queryable.Any(p)).ToArray();
 
-            match = MatchScores.ToScore(scores, MatchOperator);
+            score = MatchScores.ToScore(scores, MatchOperator);
-
-            return MatchBehaviourHelper.Convert(MatchBehaviour, match);
         }
-        catch
+        catch (Exception e)
         {
-            if (ThrowException)
+            error = e;
-            {
-                throw;
-            }
         }
 
-        return MatchBehaviourHelper.Convert(MatchBehaviour, match);
+        return new MatchResult(MatchBehaviourHelper.Convert(MatchBehaviour, score), error);
     }
 
     /// <inheritdoc />
@@ -142,5 +129,5 @@ public class LinqMatcher : IObjectMatcher, IStringMatcher
     public MatchOperator MatchOperator { get; }
 
     /// <inheritdoc />
-    public string Name => "LinqMatcher";
+    public string Name => nameof(LinqMatcher);
 }

src/WireMock.Net/Matchers/MatchResult.cs

@@ -0,0 +1,89 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Stef.Validation;
+using WireMock.Extensions;
+
+namespace WireMock.Matchers;
+
+/// <summary>
+/// The MatchResult which contains the score (value between 0.0 - 1.0 of the similarity) and an optional error message.
+/// </summary>
+public struct MatchResult
+{
+    /// <summary>
+    /// A value between 0.0 - 1.0 of the similarity.
+    /// </summary>
+    public double Score { get; set; }
+
+    /// <summary>
+    /// The exception message) in case the matching fails.
+    /// [Optional]
+    /// </summary>
+    public Exception? Exception { get; set; }
+
+    /// <summary>
+    /// Create a MatchResult
+    /// </summary>
+    /// <param name="score">A value between 0.0 - 1.0 of the similarity.</param>
+    /// <param name="exception">The exception in case the matching fails. [Optional]</param>
+    public MatchResult(double score, Exception? exception = null)
+    {
+        Score = score;
+        Exception = exception;
+    }
+
+    /// <summary>
+    /// Create a MatchResult
+    /// </summary>
+    /// <param name="exception">The exception in case the matching fails.</param>
+    public MatchResult(Exception exception)
+    {
+        Exception = Guard.NotNull(exception);
+    }
+
+    /// <summary>
+    /// Implicitly converts a double to a MatchResult.
+    /// </summary>
+    /// <param name="score">The score</param>
+    public static implicit operator MatchResult(double score)
+    {
+        return new MatchResult(score);
+    }
+
+    /// <summary>
+    /// Is the value a perfect match?
+    /// </summary>
+    public bool IsPerfect() => MatchScores.IsPerfect(Score);
+
+    /// <summary>
+    /// Create a MatchResult from multiple MatchResults.
+    /// </summary>
+    /// <param name="matchResults">A list of MatchResults.</param>
+    /// <param name="matchOperator">The MatchOperator</param>
+    /// <returns>MatchResult</returns>
+    public static MatchResult From(IReadOnlyList<MatchResult> matchResults, MatchOperator matchOperator)
+    {
+        Guard.NotNullOrEmpty(matchResults);
+
+        if (matchResults.Count == 1)
+        {
+            return matchResults[0];
+        }
+
+        return new MatchResult
+        {
+            Score = MatchScores.ToScore(matchResults.Select(r => r.Score).ToArray(), matchOperator),
+            Exception = matchResults.Select(m => m.Exception).OfType<Exception>().ToArray().ToException()
+        };
+    }
+
+    /// <summary>
+    /// Expand to Tuple
+    /// </summary>
+    /// <returns>Tuple : Score and Exception</returns>
+    public (double Score, Exception? Exception) Expand()
+    {
+        return (Score, Exception);
+    }
+}

src/WireMock.Net/Matchers/MimePartMatcher.cs

@@ -1,7 +1,9 @@
 #if MIMEKIT
 using System;
 using MimeKit;
+using WireMock.Matchers;
 using WireMock.Matchers.Helpers;
+using WireMock.Models;
 using WireMock.Util;
 
 namespace WireMock.Matchers;
@@ -11,7 +13,7 @@ namespace WireMock.Matchers;
 /// </summary>
 public class MimePartMatcher : IMatcher
 {
-    private readonly Func<MimePart, double>[] _funcs;
+    private readonly Func<MimePart, MatchResult>[] _funcs;
 
     /// <inheritdoc />
     public string Name => nameof(MimePartMatcher);
@@ -39,9 +41,6 @@ public class MimePartMatcher : IMatcher
     /// <inheritdoc />
     public MatchBehaviour MatchBehaviour { get; }
 
-    /// <inheritdoc />
-    public bool ThrowException { get; }
-
     /// <summary>
     /// Initializes a new instance of the <see cref="MimePartMatcher"/> class.
     /// </summary>
@@ -50,8 +49,7 @@ public class MimePartMatcher : IMatcher
         IStringMatcher? contentTypeMatcher,
         IStringMatcher? contentDispositionMatcher,
         IStringMatcher? contentTransferEncodingMatcher,
-        IMatcher? contentMatcher,
+        IMatcher? contentMatcher
-        bool throwException = false
     )
     {
         MatchBehaviour = matchBehaviour;
@@ -59,7 +57,6 @@ public class MimePartMatcher : IMatcher
         ContentDispositionMatcher = contentDispositionMatcher;
         ContentTransferEncodingMatcher = contentTransferEncodingMatcher;
         ContentMatcher = contentMatcher;
-        ThrowException = throwException;
 
         _funcs = new[]
         {
@@ -75,29 +72,27 @@ public class MimePartMatcher : IMatcher
     /// </summary>
     /// <param name="mimePart">The MimePart.</param>
     /// <returns>A value between 0.0 - 1.0 of the similarity.</returns>
-    public double IsMatch(MimePart mimePart)
+    public MatchResult IsMatch(MimePart mimePart)
     {
-        var match = MatchScores.Mismatch;
+        var score = MatchScores.Mismatch;
+        Exception? exception = null;
 
         try
         {
-            if (Array.TrueForAll(_funcs, func => MatchScores.IsPerfect(func(mimePart))))
+            if (Array.TrueForAll(_funcs, func => func(mimePart).IsPerfect()))
             {
-                match = MatchScores.Perfect;
+                score = MatchScores.Perfect;
             }
         }
-        catch
+        catch (Exception ex)
         {
-            if (ThrowException)
+            exception = ex;
-            {
-                throw;
-            }
         }
 
-        return MatchBehaviourHelper.Convert(MatchBehaviour, match);
+        return new MatchResult(MatchBehaviourHelper.Convert(MatchBehaviour, score), exception);
     }
 
-    private double MatchOnContent(MimePart mimePart)
+    private MatchResult MatchOnContent(MimePart mimePart)
     {
         if (ContentMatcher == null)
         {

src/WireMock.Net/Matchers/NotNullOrEmptyMatcher.cs

@@ -11,15 +11,12 @@ namespace WireMock.Matchers;
 /// <seealso cref="IObjectMatcher" />
 public class NotNullOrEmptyMatcher : IObjectMatcher, IStringMatcher
 {
-    /// <inheritdoc cref="IMatcher.Name"/>
+    /// <inheritdoc />
-    public string Name => "NotNullOrEmptyMatcher";
+    public string Name => nameof(NotNullOrEmptyMatcher);
 
-    /// <inheritdoc cref="IMatcher.MatchBehaviour"/>
+    /// <inheritdoc />
     public MatchBehaviour MatchBehaviour { get; }
 
-    /// <inheritdoc cref="IMatcher.ThrowException"/>
-    public bool ThrowException { get; }
-
     /// <summary>
     /// Initializes a new instance of the <see cref="NotNullOrEmptyMatcher"/> class.
     /// </summary>
@@ -29,8 +26,8 @@ public class NotNullOrEmptyMatcher : IObjectMatcher, IStringMatcher
         MatchBehaviour = matchBehaviour;
     }
 
-    /// <inheritdoc cref="IObjectMatcher.IsMatch"/>
+    /// <inheritdoc />
-    public double IsMatch(object? input)
+    public MatchResult IsMatch(object? input)
     {
         bool match;
 
@@ -52,15 +49,15 @@ public class NotNullOrEmptyMatcher : IObjectMatcher, IStringMatcher
         return MatchBehaviourHelper.Convert(MatchBehaviour, MatchScores.ToScore(match));
     }
 
-    /// <inheritdoc cref="IStringMatcher.IsMatch"/>
+    /// <inheritdoc />
-    public double IsMatch(string? input)
+    public MatchResult IsMatch(string? input)
     {
         var match = !string.IsNullOrEmpty(input);
 
         return MatchBehaviourHelper.Convert(MatchBehaviour, MatchScores.ToScore(match));
     }
 
-    /// <inheritdoc cref="IStringMatcher.GetPatterns"/>
+    /// <inheritdoc />
     public AnyOf<string, StringPattern>[] GetPatterns()
     {
         return EmptyArray<AnyOf<string, StringPattern>>.Value;

src/WireMock.Net/Matchers/RegexMatcher.cs

@@ -20,27 +20,22 @@ public class RegexMatcher : IStringMatcher, IIgnoreCaseMatcher
     private readonly AnyOf<string, StringPattern>[] _patterns;
     private readonly Regex[] _expressions;
 
-    /// <inheritdoc cref="IMatcher.MatchBehaviour"/>
+    /// <inheritdoc />
     public MatchBehaviour MatchBehaviour { get; }
 
-    /// <inheritdoc cref="IMatcher.ThrowException"/>
-    public bool ThrowException { get; }
-
     /// <summary>
     /// Initializes a new instance of the <see cref="RegexMatcher"/> class.
     /// </summary>
     /// <param name="pattern">The pattern.</param>
     /// <param name="ignoreCase">Ignore the case from the pattern.</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="useRegexExtended">Use RegexExtended (default = true).</param>
     /// <param name="matchOperator">The <see cref="Matchers.MatchOperator"/> to use. (default = "Or")</param>
     public RegexMatcher(
         [RegexPattern] AnyOf<string, StringPattern> pattern,
         bool ignoreCase = false,
-        bool throwException = false,
         bool useRegexExtended = true,
         MatchOperator matchOperator = MatchOperator.Or) :
-        this(MatchBehaviour.AcceptOnMatch, new[] { pattern }, ignoreCase, throwException, useRegexExtended, matchOperator)
+        this(MatchBehaviour.AcceptOnMatch, new[] { pattern }, ignoreCase, useRegexExtended, matchOperator)
     {
     }
 
@@ -50,17 +45,15 @@ public class RegexMatcher : IStringMatcher, IIgnoreCaseMatcher
     /// <param name="matchBehaviour">The match behaviour.</param>
     /// <param name="pattern">The pattern.</param>
     /// <param name="ignoreCase">Ignore the case from the pattern.</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="useRegexExtended">Use RegexExtended (default = true).</param>
     /// <param name="matchOperator">The <see cref="Matchers.MatchOperator"/> to use. (default = "Or")</param>
     public RegexMatcher(
         MatchBehaviour matchBehaviour,
         [RegexPattern] AnyOf<string, StringPattern> pattern,
         bool ignoreCase = false,
-        bool throwException = false,
         bool useRegexExtended = true,
         MatchOperator matchOperator = MatchOperator.Or) :
-        this(matchBehaviour, new[] { pattern }, ignoreCase, throwException, useRegexExtended, matchOperator)
+        this(matchBehaviour, new[] { pattern }, ignoreCase, useRegexExtended, matchOperator)
     {
     }
 
@@ -70,21 +63,18 @@ public class RegexMatcher : IStringMatcher, IIgnoreCaseMatcher
     /// <param name="matchBehaviour">The match behaviour.</param>
     /// <param name="patterns">The patterns.</param>
     /// <param name="ignoreCase">Ignore the case from the pattern.</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="useRegexExtended">Use RegexExtended (default = true).</param>
     /// <param name="matchOperator">The <see cref="Matchers.MatchOperator"/> to use. (default = "Or")</param>
     public RegexMatcher(
         MatchBehaviour matchBehaviour,
         [RegexPattern] AnyOf<string, StringPattern>[] patterns,
         bool ignoreCase = false,
-        bool throwException = false,
         bool useRegexExtended = true,
         MatchOperator matchOperator = MatchOperator.Or)
     {
         _patterns = Guard.NotNull(patterns);
         IgnoreCase = ignoreCase;
         MatchBehaviour = matchBehaviour;
-        ThrowException = throwException;
         MatchOperator = matchOperator;
 
         RegexOptions options = RegexOptions.Compiled | RegexOptions.Multiline;
@@ -97,26 +87,25 @@ public class RegexMatcher : IStringMatcher, IIgnoreCaseMatcher
         _expressions = patterns.Select(p => useRegexExtended ? new RegexExtended(p.GetPattern(), options) : new Regex(p.GetPattern(), options)).ToArray();
     }
 
-    /// <inheritdoc cref="IStringMatcher.IsMatch"/>
+    /// <inheritdoc />
-    public virtual double IsMatch(string? input)
+    public virtual MatchResult IsMatch(string? input)
     {
-        double match = MatchScores.Mismatch;
+        var score = MatchScores.Mismatch;
+        Exception? exception = null;
+
         if (input != null)
         {
             try
             {
-                match = MatchScores.ToScore(_expressions.Select(e => e.IsMatch(input)).ToArray(), MatchOperator);
+                score = MatchScores.ToScore(_expressions.Select(e => e.IsMatch(input)).ToArray(), MatchOperator);
             }
-            catch (Exception)
+            catch (Exception ex)
             {
-                if (ThrowException)
+                exception = ex;
-                {
-                    throw;
-                }
             }
         }
 
-        return MatchBehaviourHelper.Convert(MatchBehaviour, match);
+        return new MatchResult(MatchBehaviourHelper.Convert(MatchBehaviour, score), exception);
     }
 
     /// <inheritdoc />

src/WireMock.Net/Matchers/Request/RequestMatchResult.cs

@@ -9,30 +9,25 @@ namespace WireMock.Matchers.Request;
 /// </summary>
 public class RequestMatchResult : IRequestMatchResult
 {
-    /// <inheritdoc cref="IRequestMatchResult.TotalScore" />
+    /// <inheritdoc />
     public double TotalScore => MatchDetails.Sum(md => md.Score);
 
-    /// <inheritdoc cref="IRequestMatchResult.TotalNumber" />
+    /// <inheritdoc />
     public int TotalNumber => MatchDetails.Count;
 
-    /// <inheritdoc cref="IRequestMatchResult.IsPerfectMatch" />
+    /// <inheritdoc />
     public bool IsPerfectMatch => Math.Abs(TotalScore - TotalNumber) < MatchScores.Tolerance;
 
-    /// <inheritdoc cref="IRequestMatchResult.AverageTotalScore" />
+    /// <inheritdoc />
-    public double AverageTotalScore => TotalNumber == 0 ? 0.0 : TotalScore / TotalNumber;
+    public double AverageTotalScore => TotalNumber == 0 ? MatchScores.Mismatch : TotalScore / TotalNumber;
 
-    /// <inheritdoc cref="IRequestMatchResult.MatchDetails" />
+    /// <inheritdoc />
     public IList<MatchDetail> MatchDetails { get; } = new List<MatchDetail>();
 
-    /// <summary>
+    /// <inheritdoc />
-    /// Adds the score.
+    public double AddScore(Type matcherType, double score, Exception? exception)
-    /// </summary>
-    /// <param name="matcherType">The matcher Type.</param>
-    /// <param name="score">The score.</param>
-    /// <returns>The score.</returns>
-    public double AddScore(Type matcherType, double score)
     {
-        MatchDetails.Add(new MatchDetail { MatcherType = matcherType, Score = score });
+        MatchDetails.Add(new MatchDetail { MatcherType = matcherType, Score = score, Exception = exception });
 
         return score;
     }
@@ -44,11 +39,16 @@ public class RequestMatchResult : IRequestMatchResult
     /// <returns>
     /// A value that indicates the relative order of the objects being compared. The return value has these meanings: Value Meaning Less than zero This instance precedes <paramref name="obj" /> in the sort order. Zero This instance occurs in the same position in the sort order as <paramref name="obj" />. Greater than zero This instance follows <paramref name="obj" /> in the sort order.
     /// </returns>
-    public int CompareTo(object obj)
+    public int CompareTo(object? obj)
     {
+        if (obj == null)
+        {
+            return -1;
+        }
+
         var compareObj = (RequestMatchResult)obj;
 
-        int averageTotalScoreResult = compareObj.AverageTotalScore.CompareTo(AverageTotalScore);
+        var averageTotalScoreResult = compareObj.AverageTotalScore.CompareTo(AverageTotalScore);
 
         // In case the score is equal, prefer the one with the most matchers.
         return averageTotalScoreResult == 0 ? compareObj.TotalNumber.CompareTo(TotalNumber) : averageTotalScoreResult;

src/WireMock.Net/Matchers/Request/RequestMessageBodyMatcher.cs

@@ -145,16 +145,16 @@ public class RequestMessageBodyMatcher : IRequestMatcher
     /// <inheritdoc />
     public double GetMatchingScore(IRequestMessage requestMessage, IRequestMatchResult requestMatchResult)
     {
-        double score = CalculateMatchScore(requestMessage);
+        var (score, exception) = CalculateMatchScore(requestMessage).Expand();
-        return requestMatchResult.AddScore(GetType(), score);
+        return requestMatchResult.AddScore(GetType(), score, exception);
     }
 
-    private double CalculateMatchScore(IRequestMessage requestMessage)
+    private MatchResult CalculateMatchScore(IRequestMessage requestMessage)
     {
-        if (Matchers != null)
+        if (Matchers != null && Matchers.Any())
         {
-            var matchersResult = Matchers.Select(matcher => BodyDataMatchScoreCalculator.CalculateMatchScore(requestMessage.BodyData, matcher)).ToArray();
+            var results = Matchers.Select(matcher => BodyDataMatchScoreCalculator.CalculateMatchScore(requestMessage.BodyData, matcher)).ToArray();
-            return MatchScores.ToScore(matchersResult, MatchOperator);
+            return MatchResult.From(results, MatchOperator);
         }
 
         if (Func != null)
@@ -182,6 +182,6 @@ public class RequestMessageBodyMatcher : IRequestMatcher
             return MatchScores.ToScore(BodyDataFunc(requestMessage.BodyData));
         }
 
-        return MatchScores.Mismatch;
+        return default;
     }
 }

src/WireMock.Net/Matchers/Request/RequestMessageClientIPMatcher.cs

@@ -43,7 +43,7 @@ public class RequestMessageClientIPMatcher : IRequestMatcher
         MatchOperator matchOperator,
         params string[] clientIPs) :
         this(matchBehaviour, matchOperator, clientIPs
-            .Select(clientIP => new WildcardMatcher(matchBehaviour, new AnyOf<string, StringPattern>[] { clientIP }, false, false, matchOperator))
+            .Select(clientIP => new WildcardMatcher(matchBehaviour, new AnyOf<string, StringPattern>[] { clientIP }, false, matchOperator))
             .Cast<IStringMatcher>().ToArray())
     {
         Behaviour = matchBehaviour;
@@ -75,16 +75,16 @@ public class RequestMessageClientIPMatcher : IRequestMatcher
     /// <inheritdoc />
     public double GetMatchingScore(IRequestMessage requestMessage, IRequestMatchResult requestMatchResult)
     {
-        double score = IsMatch(requestMessage);
+        var (score, exception) = GetMatchResult(requestMessage).Expand();
-        return requestMatchResult.AddScore(GetType(), score);
+        return requestMatchResult.AddScore(GetType(), score, exception);
     }
 
-    private double IsMatch(IRequestMessage requestMessage)
+    private MatchResult GetMatchResult(IRequestMessage requestMessage)
     {
         if (Matchers != null)
         {
             var results = Matchers.Select(m => m.IsMatch(requestMessage.ClientIP)).ToArray();
-            return MatchScores.ToScore(results, MatchOperator);
+            return MatchResult.From(results, MatchOperator);
         }
 
         if (Funcs != null)
@@ -93,6 +93,6 @@ public class RequestMessageClientIPMatcher : IRequestMatcher
             return MatchScores.ToScore(results, MatchOperator);
         }
 
-        return MatchScores.Mismatch;
+        return default;
     }
 }

src/WireMock.Net/Matchers/Request/RequestMessageCookieMatcher.cs

@@ -88,11 +88,11 @@ public class RequestMessageCookieMatcher : IRequestMatcher
     /// <inheritdoc />
     public double GetMatchingScore(IRequestMessage requestMessage, IRequestMatchResult requestMatchResult)
     {
-        double score = IsMatch(requestMessage);
+        var (score, exception) = GetMatchResult(requestMessage).Expand();
-        return requestMatchResult.AddScore(GetType(), score);
+        return requestMatchResult.AddScore(GetType(), score, exception);
     }
 
-    private double IsMatch(IRequestMessage requestMessage)
+    private MatchResult GetMatchResult(IRequestMessage requestMessage)
     {
         if (requestMessage.Cookies == null)
         {
@@ -109,7 +109,7 @@ public class RequestMessageCookieMatcher : IRequestMatcher
 
         if (Matchers == null)
         {
-            return MatchScores.Mismatch;
+            return default;
         }
 
         if (!cookies.ContainsKey(Name))
@@ -117,7 +117,6 @@ public class RequestMessageCookieMatcher : IRequestMatcher
             return MatchBehaviourHelper.Convert(_matchBehaviour, MatchScores.Mismatch);
         }
 
-        string value = cookies[Name];
+        return Matchers.Max(m => m.IsMatch(cookies[Name]));
-        return Matchers.Max(m => m.IsMatch(value));
     }
 }

src/WireMock.Net/Matchers/Request/RequestMessageGraphQLMatcher.cs

@@ -1,3 +1,4 @@
+using System.Collections.Generic;
 using System.Linq;
 using Stef.Validation;
 using WireMock.Types;
@@ -64,11 +65,13 @@ public class RequestMessageGraphQLMatcher : IRequestMatcher
     /// <inheritdoc />
     public double GetMatchingScore(IRequestMessage requestMessage, IRequestMatchResult requestMatchResult)
     {
-        var score = CalculateMatchScore(requestMessage);
+        var results = CalculateMatchResults(requestMessage);
-        return requestMatchResult.AddScore(GetType(), score);
+        var (score, exception) = MatchResult.From(results, MatchOperator).Expand();
+
+        return requestMatchResult.AddScore(GetType(), score, exception);
     }
 
-    private static double CalculateMatchScore(IRequestMessage requestMessage, IMatcher matcher)
+    private static MatchResult CalculateMatchResult(IRequestMessage requestMessage, IMatcher matcher)
     {
         // Check if the matcher is a IStringMatcher
         // If the body is a Json or a String, use the BodyAsString to match on.
@@ -77,18 +80,12 @@ public class RequestMessageGraphQLMatcher : IRequestMatcher
             return stringMatcher.IsMatch(requestMessage.BodyData.BodyAsString);
         }
 
-        return MatchScores.Mismatch;
+        return default;
     }
 
-    private double CalculateMatchScore(IRequestMessage requestMessage)
+    private IReadOnlyList<MatchResult> CalculateMatchResults(IRequestMessage requestMessage)
     {
-        if (Matchers == null)
+        return Matchers == null ? new[] { new MatchResult() } : Matchers.Select(matcher => CalculateMatchResult(requestMessage, matcher)).ToArray();
-        {
-            return MatchScores.Mismatch;
-        }
-
-        var matchersResult = Matchers.Select(matcher => CalculateMatchScore(requestMessage, matcher)).ToArray();
-        return MatchScores.ToScore(matchersResult, MatchOperator);
     }
 
 #if GRAPHQL

src/WireMock.Net/Matchers/Request/RequestMessageHeaderMatcher.cs

@@ -100,11 +100,11 @@ public class RequestMessageHeaderMatcher : IRequestMatcher
     /// <inheritdoc />
     public double GetMatchingScore(IRequestMessage requestMessage, IRequestMatchResult requestMatchResult)
     {
-        double score = IsMatch(requestMessage);
+        var (score, exception) = GetMatchResult(requestMessage).Expand();
-        return requestMatchResult.AddScore(GetType(), score);
+        return requestMatchResult.AddScore(GetType(), score, exception);
     }
 
-    private double IsMatch(IRequestMessage requestMessage)
+    private MatchResult GetMatchResult(IRequestMessage requestMessage)
     {
         if (requestMessage.Headers == null)
         {
@@ -127,15 +127,15 @@ public class RequestMessageHeaderMatcher : IRequestMatcher
                 return MatchBehaviourHelper.Convert(_matchBehaviour, MatchScores.Mismatch);
             }
 
-            var results = new List<double>();
+            var results = new List<MatchResult>();
             foreach (var matcher in Matchers)
             {
-                var resultsPerMatcher = headers[Name].Select(v => matcher.IsMatch(v)).ToArray();
+                var resultsPerMatcher = headers[Name].Select(matcher.IsMatch).ToArray();
 
-                results.Add(MatchScores.ToScore(resultsPerMatcher, MatchOperator.And));
+                results.Add(MatchResult.From(resultsPerMatcher, MatchOperator.And));
             }
 
-            return MatchScores.ToScore(results, MatchOperator);
+            return MatchResult.From(results, MatchOperator);
         }
 
         return MatchBehaviourHelper.Convert(_matchBehaviour, MatchScores.Mismatch);

src/WireMock.Net/Matchers/Request/RequestMessageMethodMatcher.cs

@@ -39,14 +39,9 @@ internal class RequestMessageMethodMatcher : IRequestMatcher
 
     /// <inheritdoc />
     public double GetMatchingScore(IRequestMessage requestMessage, IRequestMatchResult requestMatchResult)
-    {
-        double score = MatchBehaviourHelper.Convert(MatchBehaviour, IsMatch(requestMessage));
-        return requestMatchResult.AddScore(GetType(), score);
-    }
-
-    private double IsMatch(IRequestMessage requestMessage)
     {
         var scores = Methods.Select(m => string.Equals(m, requestMessage.Method, StringComparison.OrdinalIgnoreCase)).ToArray();
-        return MatchScores.ToScore(scores, MatchOperator);
+        var score = MatchScores.ToScore(scores, MatchOperator);
+        return requestMatchResult.AddScore(GetType(), score, null);
     }
 }

src/WireMock.Net/Matchers/Request/RequestMessageMultiPartMatcher.cs

@@ -1,7 +1,7 @@
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using Stef.Validation;
-using WireMock.Http;
 using WireMock.Util;
 
 namespace WireMock.Matchers.Request;
@@ -54,27 +54,31 @@ public class RequestMessageMultiPartMatcher : IRequestMatcher
 #if !MIMEKIT
         throw new System.NotSupportedException("The MultiPartMatcher can not be used for .NETStandard1.3 or .NET Framework 4.6.1 or lower.");
 #else
-        var match = MatchScores.Mismatch;
+        var score = MatchScores.Mismatch;
+        Exception? exception = null;
 
         if (Matchers?.Any() != true)
         {
-            return requestMatchResult.AddScore(GetType(), match);
+            return requestMatchResult.AddScore(GetType(), score, null);
+        }
+
+        if (!MimeKitUtils.TryGetMimeMessage(requestMessage, out var message))
+        {
+            return requestMatchResult.AddScore(GetType(), score, null);
         }
 
         try
         {
-            var message = MimeKitUtils.GetMimeMessage(requestMessage.BodyData!, requestMessage.Headers![HttpKnownHeaderNames.ContentType].ToString());
-
             var mimePartMatchers = Matchers.OfType<MimePartMatcher>().ToArray();
 
             foreach (var mimePart in message.BodyParts.OfType<MimeKit.MimePart>())
             {
-                var matchesForMimePart = new List<double> { MatchScores.Mismatch };
+                var matchesForMimePart = new List<MatchResult> { default };
                 matchesForMimePart.AddRange(mimePartMatchers.Select(matcher => matcher.IsMatch(mimePart)));
 
-                match = matchesForMimePart.Max();
+                score = matchesForMimePart.Select(m => m.Score).Max();
 
-                if (MatchScores.IsPerfect(match))
+                if (MatchScores.IsPerfect(score))
                 {
                     if (MatchOperator == MatchOperator.Or)
                     {
@@ -83,17 +87,17 @@ public class RequestMessageMultiPartMatcher : IRequestMatcher
                 }
                 else
                 {
-                    match = MatchScores.Mismatch;
+                    score = MatchScores.Mismatch;
                     break;
                 }
             }
         }
-        catch
+        catch (Exception ex)
         {
-            // Empty
+            exception = ex;
         }
 
-        return requestMatchResult.AddScore(GetType(), match);
+        return requestMatchResult.AddScore(GetType(), score, exception);
 #endif
     }
 }

src/WireMock.Net/Matchers/Request/RequestMessageParamMatcher.cs

@@ -54,7 +54,7 @@ public class RequestMessageParamMatcher : IRequestMatcher
     /// <param name="ignoreCase">Defines if the key should be matched using case-ignore.</param>
     /// <param name="values">The values.</param>
     public RequestMessageParamMatcher(MatchBehaviour matchBehaviour, string key, bool ignoreCase, params string[]? values) :
-        this(matchBehaviour, key, ignoreCase, values?.Select(value => new ExactMatcher(matchBehaviour, ignoreCase, false, MatchOperator.And, value)).Cast<IStringMatcher>().ToArray())
+        this(matchBehaviour, key, ignoreCase, values?.Select(value => new ExactMatcher(matchBehaviour, ignoreCase, MatchOperator.And, value)).Cast<IStringMatcher>().ToArray())
     {
     }
 
@@ -85,11 +85,11 @@ public class RequestMessageParamMatcher : IRequestMatcher
     /// <inheritdoc />
     public double GetMatchingScore(IRequestMessage requestMessage, IRequestMatchResult requestMatchResult)
     {
-        double score = MatchBehaviourHelper.Convert(MatchBehaviour, IsMatch(requestMessage));
+        var (score, exception) = GetMatchResult(requestMessage).Expand();
-        return requestMatchResult.AddScore(GetType(), score);
+        return requestMatchResult.AddScore(GetType(), score, exception);
     }
 
-    private double IsMatch(IRequestMessage requestMessage)
+    private MatchResult GetMatchResult(IRequestMessage requestMessage)
     {
         if (Funcs != null)
         {
@@ -100,7 +100,7 @@ public class RequestMessageParamMatcher : IRequestMatcher
         if (valuesPresentInRequestMessage == null)
         {
             // Key is not present at all, just return Mismatch
-            return MatchScores.Mismatch;
+            return default;
         }
 
         if (Matchers != null && Matchers.Any())
@@ -115,10 +115,10 @@ public class RequestMessageParamMatcher : IRequestMatcher
             return MatchScores.Perfect;
         }
 
-        return MatchScores.Mismatch;
+        return default;
     }
 
-    private double CalculateScore(IReadOnlyList<IStringMatcher> matchers, WireMockList<string> valuesPresentInRequestMessage)
+    private static MatchResult CalculateScore(IReadOnlyList<IStringMatcher> matchers, WireMockList<string> valuesPresentInRequestMessage)
     {
         var total = new List<double>();
 
@@ -130,7 +130,7 @@ public class RequestMessageParamMatcher : IRequestMatcher
                 double score = 0d;
                 foreach (string valuePresentInRequestMessage in valuesPresentInRequestMessage)
                 {
-                    score += matcher.IsMatch(valuePresentInRequestMessage) / matcher.GetPatterns().Length;
+                    score += matcher.IsMatch(valuePresentInRequestMessage).Score / matcher.GetPatterns().Length;
                 }
 
                 total.Add(score);
@@ -140,11 +140,11 @@ public class RequestMessageParamMatcher : IRequestMatcher
         {
             foreach (string valuePresentInRequestMessage in valuesPresentInRequestMessage)
             {
-                double score = matchers.Max(m => m.IsMatch(valuePresentInRequestMessage));
+                var score = matchers.Max(m => m.IsMatch(valuePresentInRequestMessage).Score);
                 total.Add(score);
             }
         }
 
-        return total.Any() ? MatchScores.ToScore(total, MatchOperator.Average) : MatchScores.Mismatch;
+        return total.Any() ? MatchScores.ToScore(total, MatchOperator.Average) : default;
     }
 }

src/WireMock.Net/Matchers/Request/RequestMessagePathMatcher.cs

@@ -43,7 +43,7 @@ public class RequestMessagePathMatcher : IRequestMatcher
         MatchOperator matchOperator,
         params string[] paths) :
         this(matchBehaviour, matchOperator, paths
-            .Select(path => new WildcardMatcher(matchBehaviour, new AnyOf<string, StringPattern>[] { path }, false, false, matchOperator))
+            .Select(path => new WildcardMatcher(matchBehaviour, new AnyOf<string, StringPattern>[] { path }, false, matchOperator))
             .Cast<IStringMatcher>().ToArray())
     {
         Behaviour = matchBehaviour;
@@ -75,16 +75,16 @@ public class RequestMessagePathMatcher : IRequestMatcher
     /// <inheritdoc />
     public double GetMatchingScore(IRequestMessage requestMessage, IRequestMatchResult requestMatchResult)
     {
-        double score = IsMatch(requestMessage);
+        var (score, exception) = GetMatchResult(requestMessage).Expand();
-        return requestMatchResult.AddScore(GetType(), score);
+        return requestMatchResult.AddScore(GetType(), score, exception);
     }
 
-    private double IsMatch(IRequestMessage requestMessage)
+    private MatchResult GetMatchResult(IRequestMessage requestMessage)
     {
         if (Matchers != null)
         {
             var results = Matchers.Select(m => m.IsMatch(requestMessage.Path)).ToArray();
-            return MatchScores.ToScore(results, MatchOperator);
+            return MatchResult.From(results, MatchOperator);
         }
 
         if (Funcs != null)
@@ -93,6 +93,6 @@ public class RequestMessagePathMatcher : IRequestMatcher
             return MatchScores.ToScore(results, MatchOperator);
         }
 
-        return MatchScores.Mismatch;
+        return default;
     }
 }

src/WireMock.Net/Matchers/Request/RequestMessageScenarioAndStateMatcher.cs

@@ -30,11 +30,10 @@ internal class RequestMessageScenarioAndStateMatcher : IRequestMatcher
     /// <inheritdoc />
     public double GetMatchingScore(IRequestMessage requestMessage, IRequestMatchResult requestMatchResult)
     {
-        double score = IsMatch();
+        return requestMatchResult.AddScore(GetType(), GetScore(), null);
-        return requestMatchResult.AddScore(GetType(), score);
     }
 
-    private double IsMatch()
+    private double GetScore()
     {
         return Equals(_executionConditionState, _nextState) ? MatchScores.Perfect : MatchScores.Mismatch;
     }

src/WireMock.Net/Matchers/Request/RequestMessageUrlMatcher.cs

@@ -43,7 +43,7 @@ public class RequestMessageUrlMatcher : IRequestMatcher
         MatchOperator matchOperator,
         params string[] urls) :
         this(matchBehaviour, matchOperator, urls
-            .Select(url => new WildcardMatcher(matchBehaviour, new AnyOf<string, StringPattern>[] { url }, false, false, matchOperator))
+            .Select(url => new WildcardMatcher(matchBehaviour, new AnyOf<string, StringPattern>[] { url }, false, matchOperator))
             .Cast<IStringMatcher>().ToArray())
     {
         Behaviour = matchBehaviour;
@@ -75,16 +75,16 @@ public class RequestMessageUrlMatcher : IRequestMatcher
     /// <inheritdoc />
     public double GetMatchingScore(IRequestMessage requestMessage, IRequestMatchResult requestMatchResult)
     {
-        double score = IsMatch(requestMessage);
+        var (score, exception) = GetMatchResult(requestMessage).Expand();
-        return requestMatchResult.AddScore(GetType(), score);
+        return requestMatchResult.AddScore(GetType(), score, exception);
     }
 
-    private double IsMatch(IRequestMessage requestMessage)
+    private MatchResult GetMatchResult(IRequestMessage requestMessage)
     {
         if (Matchers != null)
         {
             var results = Matchers.Select(m => m.IsMatch(requestMessage.Url)).ToArray();
-            return MatchScores.ToScore(results, MatchOperator);
+            return MatchResult.From(results, MatchOperator);
         }
 
         if (Funcs != null)
@@ -93,6 +93,6 @@ public class RequestMessageUrlMatcher : IRequestMatcher
             return MatchScores.ToScore(results, MatchOperator);
         }
 
-        return MatchScores.Mismatch;
+        return default;
     }
 }

src/WireMock.Net/Matchers/SimMetricsMatcher.cs

@@ -18,12 +18,9 @@ public class SimMetricsMatcher : IStringMatcher
     private readonly AnyOf<string, StringPattern>[] _patterns;
     private readonly SimMetricType _simMetricType;
 
-    /// <inheritdoc cref="IMatcher.MatchBehaviour"/>
+    /// <inheritdoc />
     public MatchBehaviour MatchBehaviour { get; }
 
-    /// <inheritdoc cref="IMatcher.ThrowException"/>
-    public bool ThrowException { get; }
-
     /// <summary>
     /// Initializes a new instance of the <see cref="SimMetricsMatcher"/> class.
     /// </summary>
@@ -67,24 +64,21 @@ public class SimMetricsMatcher : IStringMatcher
     /// <param name="matchBehaviour">The match behaviour.</param>
     /// <param name="patterns">The patterns.</param>
     /// <param name="simMetricType">The SimMetric Type</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="matchOperator">The <see cref="Matchers.MatchOperator"/> to use. (default = "Or")</param>
     public SimMetricsMatcher(
         MatchBehaviour matchBehaviour,
         AnyOf<string, StringPattern>[] patterns,
         SimMetricType simMetricType = SimMetricType.Levenstein,
-        bool throwException = false,
         MatchOperator matchOperator = MatchOperator.Average)
     {
         _patterns = Guard.NotNull(patterns);
         _simMetricType = simMetricType;
         MatchBehaviour = matchBehaviour;
-        ThrowException = throwException;
         MatchOperator = matchOperator;
     }
 
-    /// <inheritdoc cref="IStringMatcher.IsMatch"/>
+    /// <inheritdoc />
-    public double IsMatch(string input)
+    public MatchResult IsMatch(string? input)
     {
         IStringMetric stringMetricType = GetStringMetricType();
 
@@ -94,48 +88,30 @@ public class SimMetricsMatcher : IStringMatcher
 
     private IStringMetric GetStringMetricType()
     {
-        switch (_simMetricType)
+        return _simMetricType switch
         {
-            case SimMetricType.BlockDistance:
+            SimMetricType.BlockDistance => new BlockDistance(),
-                return new BlockDistance();
+            SimMetricType.ChapmanLengthDeviation => new ChapmanLengthDeviation(),
-            case SimMetricType.ChapmanLengthDeviation:
+            SimMetricType.CosineSimilarity => new CosineSimilarity(),
-                return new ChapmanLengthDeviation();
+            SimMetricType.DiceSimilarity => new DiceSimilarity(),
-            case SimMetricType.CosineSimilarity:
+            SimMetricType.EuclideanDistance => new EuclideanDistance(),
-                return new CosineSimilarity();
+            SimMetricType.JaccardSimilarity => new JaccardSimilarity(),
-            case SimMetricType.DiceSimilarity:
+            SimMetricType.Jaro => new Jaro(),
-                return new DiceSimilarity();
+            SimMetricType.JaroWinkler => new JaroWinkler(),
-            case SimMetricType.EuclideanDistance:
+            SimMetricType.MatchingCoefficient => new MatchingCoefficient(),
-                return new EuclideanDistance();
+            SimMetricType.MongeElkan => new MongeElkan(),
-            case SimMetricType.JaccardSimilarity:
+            SimMetricType.NeedlemanWunch => new NeedlemanWunch(),
-                return new JaccardSimilarity();
+            SimMetricType.OverlapCoefficient => new OverlapCoefficient(),
-            case SimMetricType.Jaro:
+            SimMetricType.QGramsDistance => new QGramsDistance(),
-                return new Jaro();
+            SimMetricType.SmithWaterman => new SmithWaterman(),
-            case SimMetricType.JaroWinkler:
+            SimMetricType.SmithWatermanGotoh => new SmithWatermanGotoh(),
-                return new JaroWinkler();
+            SimMetricType.SmithWatermanGotohWindowedAffine => new SmithWatermanGotohWindowedAffine(),
-            case SimMetricType.MatchingCoefficient:
+            SimMetricType.ChapmanMeanLength => new ChapmanMeanLength(),
-                return new MatchingCoefficient();
+            _ => new Levenstein()
-            case SimMetricType.MongeElkan:
+        };
-                return new MongeElkan();
-            case SimMetricType.NeedlemanWunch:
-                return new NeedlemanWunch();
-            case SimMetricType.OverlapCoefficient:
-                return new OverlapCoefficient();
-            case SimMetricType.QGramsDistance:
-                return new QGramsDistance();
-            case SimMetricType.SmithWaterman:
-                return new SmithWaterman();
-            case SimMetricType.SmithWatermanGotoh:
-                return new SmithWatermanGotoh();
-            case SimMetricType.SmithWatermanGotohWindowedAffine:
-                return new SmithWatermanGotohWindowedAffine();
-            case SimMetricType.ChapmanMeanLength:
-                return new ChapmanMeanLength();
-            default:
-                return new Levenstein();
-        }
     }
 
-    /// <inheritdoc cref="IStringMatcher.GetPatterns"/>
+    /// <inheritdoc />
     public AnyOf<string, StringPattern>[] GetPatterns()
     {
         return _patterns;
@@ -144,6 +120,6 @@ public class SimMetricsMatcher : IStringMatcher
     /// <inheritdoc />
     public MatchOperator MatchOperator { get; } = MatchOperator.Average;
 
-    /// <inheritdoc cref="IMatcher.Name"/>
+    /// <inheritdoc />
     public string Name => $"SimMetricsMatcher.{_simMetricType}";
 }

src/WireMock.Net/Matchers/WildcardMatcher.cs

@@ -49,15 +49,12 @@ public class WildcardMatcher : RegexMatcher
     /// <param name="matchBehaviour">The match behaviour.</param>
     /// <param name="patterns">The patterns.</param>
     /// <param name="ignoreCase">IgnoreCase</param>
-    /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
     /// <param name="matchOperator">The <see cref="MatchOperator"/> to use. (default = "Or")</param>
     public WildcardMatcher(
         MatchBehaviour matchBehaviour,
         AnyOf<string, StringPattern>[] patterns,
         bool ignoreCase = false,
-        bool throwException = false,
+        MatchOperator matchOperator = MatchOperator.Or) : base(matchBehaviour, CreateArray(patterns), ignoreCase, true, matchOperator)
-        MatchOperator matchOperator = MatchOperator.Or) :
-            base(matchBehaviour, CreateArray(patterns), ignoreCase, throwException, true, matchOperator)
     {
         _patterns = Guard.NotNull(patterns);
     }

src/WireMock.Net/Matchers/XPathMatcher.cs

@@ -1,6 +1,8 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Xml;
+using System.Xml.XPath;
 using AnyOfTypes;
 using WireMock.Extensions;
 using WireMock.Models;
@@ -9,86 +11,91 @@ using Stef.Validation;
 using Wmhelp.XPath2;
 #endif
 
-namespace WireMock.Matchers
+namespace WireMock.Matchers;
+
+/// <summary>
+/// XPath2Matcher
+/// </summary>
+/// <seealso cref="IStringMatcher" />
+public class XPathMatcher : IStringMatcher
 {
+    private readonly AnyOf<string, StringPattern>[] _patterns;
+
+    /// <inheritdoc />
+    public MatchBehaviour MatchBehaviour { get; }
+
     /// <summary>
-    /// XPath2Matcher
+    /// Initializes a new instance of the <see cref="XPathMatcher"/> class.
     /// </summary>
-    /// <seealso cref="IStringMatcher" />
+    /// <param name="patterns">The patterns.</param>
-    public class XPathMatcher : IStringMatcher
+    public XPathMatcher(params AnyOf<string, StringPattern>[] patterns) : this(MatchBehaviour.AcceptOnMatch, MatchOperator.Or, patterns)
     {
-        private readonly AnyOf<string, StringPattern>[] _patterns;
+    }
 
-        /// <inheritdoc cref="IMatcher.MatchBehaviour"/>
+    /// <summary>
-        public MatchBehaviour MatchBehaviour { get; }
+    /// Initializes a new instance of the <see cref="XPathMatcher"/> class.
+    /// </summary>
+    /// <param name="matchBehaviour">The match behaviour.</param>
+    /// <param name="matchOperator">The <see cref="Matchers.MatchOperator"/> to use. (default = "Or")</param>
+    /// <param name="patterns">The patterns.</param>
+    public XPathMatcher(
+        MatchBehaviour matchBehaviour,
+        MatchOperator matchOperator = MatchOperator.Or,
+        params AnyOf<string, StringPattern>[] patterns)
+    {
+        _patterns = Guard.NotNull(patterns);
+        MatchBehaviour = matchBehaviour;
+        MatchOperator = matchOperator;
+    }
 
-        /// <inheritdoc cref="IMatcher.ThrowException"/>
+    /// <inheritdoc />
-        public bool ThrowException { get; }
+    public MatchResult IsMatch(string? input)
+    {
+        var score = MatchScores.Mismatch;
+        Exception? exception = null;
 
-        /// <summary>
+        if (input != null && TryGetXPathNavigator(input, out var nav))
-        /// Initializes a new instance of the <see cref="XPathMatcher"/> class.
-        /// </summary>
-        /// <param name="patterns">The patterns.</param>
-        public XPathMatcher(params AnyOf<string, StringPattern>[] patterns) : this(MatchBehaviour.AcceptOnMatch, false, MatchOperator.Or, patterns)
         {
-        }
+            try
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="XPathMatcher"/> class.
-        /// </summary>
-        /// <param name="matchBehaviour">The match behaviour.</param>
-        /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
-        /// <param name="matchOperator">The <see cref="Matchers.MatchOperator"/> to use. (default = "Or")</param>
-        /// <param name="patterns">The patterns.</param>
-        public XPathMatcher(
-            MatchBehaviour matchBehaviour,
-            bool throwException = false,
-            MatchOperator matchOperator = MatchOperator.Or,
-            params AnyOf<string, StringPattern>[] patterns)
-        {
-            _patterns = Guard.NotNull(patterns);
-            MatchBehaviour = matchBehaviour;
-            ThrowException = throwException;
-            MatchOperator = matchOperator;
-        }
-
-        /// <inheritdoc cref="IStringMatcher.IsMatch"/>
-        public double IsMatch(string? input)
-        {
-            double match = MatchScores.Mismatch;
-            if (input != null)
             {
-                try
-                {
-                    var nav = new XmlDocument { InnerXml = input }.CreateNavigator();
 #if NETSTANDARD1_3
-                    match = MatchScores.ToScore(_patterns.Select(p => true.Equals(nav.Evaluate($"boolean({p.GetPattern()})"))).ToArray(), MatchOperator);
+                score = MatchScores.ToScore(_patterns.Select(p => true.Equals(nav.Evaluate($"boolean({p.GetPattern()})"))).ToArray(), MatchOperator);
 #else
-                    match = MatchScores.ToScore(_patterns.Select(p => true.Equals(nav.XPath2Evaluate($"boolean({p.GetPattern()})"))).ToArray(), MatchOperator);
+                score = MatchScores.ToScore(_patterns.Select(p => true.Equals(nav.XPath2Evaluate($"boolean({p.GetPattern()})"))).ToArray(), MatchOperator);
 #endif
-                }
-                catch (Exception)
-                {
-                    if (ThrowException)
-                    {
-                        throw;
-                    }
-                }
             }
-
+            catch (Exception ex)
-            return MatchBehaviourHelper.Convert(MatchBehaviour, match);
+            {
+                exception = ex;
+            }
         }
 
-        /// <inheritdoc cref="IStringMatcher.GetPatterns"/>
+        return new MatchResult(MatchBehaviourHelper.Convert(MatchBehaviour, score), exception);
-        public AnyOf<string, StringPattern>[] GetPatterns()
+    }
+
+    /// <inheritdoc />
+    public AnyOf<string, StringPattern>[] GetPatterns()
+    {
+        return _patterns;
+    }
+
+    /// <inheritdoc />
+    public MatchOperator MatchOperator { get; }
+
+    /// <inheritdoc />
+    public string Name => nameof(XPathMatcher);
+
+    private static bool TryGetXPathNavigator(string input, [NotNullWhen(true)] out XPathNavigator? nav)
+    {
+        try
         {
-            return _patterns;
+            nav = new XmlDocument { InnerXml = input }.CreateNavigator()!;
+            return true;
+        }
+        catch
+        {
+            nav = default;
+            return false;
         }
-
-        /// <inheritdoc />
-        public MatchOperator MatchOperator { get; }
-
-        /// <inheritdoc cref="IMatcher.Name"/>
-        public string Name => "XPathMatcher";
     }
 }

src/WireMock.Net/Owin/GlobalExceptionMiddleware.cs

@@ -67,7 +67,7 @@ namespace WireMock.Owin
             catch (Exception ex)
             {
                 _options.Logger.Error("HttpStatusCode set to 500 {0}", ex);
-                await _responseMapper.MapAsync(ResponseMessageBuilder.Create(JsonConvert.SerializeObject(ex), 500), ctx.Response).ConfigureAwait(false);
+                await _responseMapper.MapAsync(ResponseMessageBuilder.Create(500, JsonConvert.SerializeObject(ex)), ctx.Response).ConfigureAwait(false);
             }
         }
     }

src/WireMock.Net/Owin/Mappers/OwinResponseMapper.cs

@@ -50,7 +50,7 @@ namespace WireMock.Owin.Mappers
             _options = Guard.NotNull(options);
         }
 
-        /// <inheritdoc cref="IOwinResponseMapper.MapAsync"/>
+        /// <inheritdoc />
         public async Task MapAsync(IResponseMessage? responseMessage, IResponse response)
         {
             if (responseMessage == null)
@@ -134,10 +134,8 @@ namespace WireMock.Owin.Mappers
                     return (responseMessage.BodyData.Encoding ?? _utf8NoBom).GetBytes(responseMessage.BodyData.BodyAsString!);
 
                 case BodyType.Json:
-                    var formatting = responseMessage.BodyData.BodyAsJsonIndented == true
+                    var formatting = responseMessage.BodyData.BodyAsJsonIndented == true ? Formatting.Indented : Formatting.None;
-                        ? Formatting.Indented
+                    var jsonBody = JsonConvert.SerializeObject(responseMessage.BodyData.BodyAsJson, new JsonSerializerSettings { Formatting = formatting, NullValueHandling = NullValueHandling.Ignore });
-                        : Formatting.None;
-                    string jsonBody = JsonConvert.SerializeObject(responseMessage.BodyData.BodyAsJson, new JsonSerializerSettings { Formatting = formatting, NullValueHandling = NullValueHandling.Ignore });
                     return (responseMessage.BodyData.Encoding ?? _utf8NoBom).GetBytes(jsonBody);
 
                 case BodyType.Bytes:

src/WireMock.Net/Owin/MappingMatcher.cs

@@ -35,15 +35,32 @@ internal class MappingMatcher : IMappingMatcher
             {
                 var nextState = GetNextState(mapping);
 
-                possibleMappings.Add(new MappingMatcherResult
+                var mappingMatcherResult = new MappingMatcherResult
                 {
                     Mapping = mapping,
                     RequestMatchResult = mapping.GetRequestMatchResult(request, nextState)
-                });
+                };
+
+                var exceptions = mappingMatcherResult.RequestMatchResult.MatchDetails
+                    .Where(md => md.Exception != null)
+                    .Select(md => md.Exception)
+                    .ToArray();
+
+                if (!exceptions.Any())
+                {
+                    possibleMappings.Add(mappingMatcherResult);
+                }
+                else if (!request.AbsolutePath.StartsWith("/__admin", StringComparison.OrdinalIgnoreCase))
+                {
+                    foreach (var ex in exceptions)
+                    {
+                        LogException(mapping, ex!);
+                    }
+                }
             }
             catch (Exception ex)
             {
-                _options.Logger.Error($"Getting a Request MatchResult for Mapping '{mapping.Guid}' failed. This mapping will not be evaluated. Exception: {ex}");
+                LogException(mapping, ex);
             }
         }
 
@@ -66,6 +83,11 @@ internal class MappingMatcher : IMappingMatcher
         return (match, partialMatch);
     }
 
+    private void LogException(IMapping mapping, Exception ex)
+    {
+        _options.Logger.Error($"Getting a Request MatchResult for Mapping '{mapping.Guid}' failed. This mapping will not be evaluated. Exception: {ex}");
+    }
+
     private string? GetNextState(IMapping mapping)
     {
         // If the mapping does not have a scenario or _options.Scenarios does not contain this scenario from the mapping,

src/WireMock.Net/Owin/WireMockMiddleware.cs

@@ -12,6 +12,8 @@ using WireMock.Types;
 using WireMock.ResponseBuilders;
 using WireMock.Settings;
 using System.Collections.Generic;
+using WireMock.Constants;
+using WireMock.Util;
 #if !USE_ASPNETCORE
 using IContext = Microsoft.Owin.IOwinContext;
 using OwinMiddleware = Microsoft.Owin.OwinMiddleware;
@@ -105,7 +107,7 @@ namespace WireMock.Owin
                 {
                     logRequest = true;
                     _options.Logger.Warn("HttpStatusCode set to 404 : No matching mapping found");
-                    response = ResponseMessageBuilder.Create("No matching mapping found", 404);
+                    response = ResponseMessageBuilder.Create(HttpStatusCode.NotFound, WireMockConstants.NoMatchingFound);
                     return;
                 }
 
@@ -113,11 +115,11 @@ namespace WireMock.Owin
 
                 if (targetMapping.IsAdminInterface && _options.AuthenticationMatcher != null && request.Headers != null)
                 {
-                    bool present = request.Headers.TryGetValue(HttpKnownHeaderNames.Authorization, out WireMockList<string> authorization);
+                    bool present = request.Headers.TryGetValue(HttpKnownHeaderNames.Authorization, out WireMockList<string>? authorization);
-                    if (!present || _options.AuthenticationMatcher.IsMatch(authorization!.ToString()) < MatchScores.Perfect)
+                    if (!present || _options.AuthenticationMatcher.IsMatch(authorization!.ToString()).Score < MatchScores.Perfect)
                     {
                         _options.Logger.Error("HttpStatusCode set to 401");
-                        response = ResponseMessageBuilder.Create(null, HttpStatusCode.Unauthorized);
+                        response = ResponseMessageBuilder.Create(HttpStatusCode.Unauthorized, null);
                         return;
                     }
                 }
@@ -161,8 +163,8 @@ namespace WireMock.Owin
             }
             catch (Exception ex)
             {
-                _options.Logger.Error($"Providing a Response for Mapping '{result.Match?.Mapping?.Guid}' failed. HttpStatusCode set to 500. Exception: {ex}");
+                _options.Logger.Error($"Providing a Response for Mapping '{result.Match?.Mapping.Guid}' failed. HttpStatusCode set to 500. Exception: {ex}");
-                response = ResponseMessageBuilder.Create(ex.Message, 500);
+                response = ResponseMessageBuilder.Create(500, ex.Message);
             }
             finally
             {
@@ -196,7 +198,17 @@ namespace WireMock.Owin
                     // Empty catch
                 }
 
-                await _responseMapper.MapAsync(response, ctx.Response).ConfigureAwait(false);
+                try
+                {
+                    await _responseMapper.MapAsync(response, ctx.Response).ConfigureAwait(false);
+                }
+                catch (Exception ex)
+                {
+                    _options.Logger.Error("HttpStatusCode set to 404 : No matching mapping found", ex);
+
+                    var notFoundResponse = ResponseMessageBuilder.Create(HttpStatusCode.NotFound, WireMockConstants.NoMatchingFound);
+                    await _responseMapper.MapAsync(notFoundResponse, ctx.Response).ConfigureAwait(false);
+                }
             }
 
             await CompletedTask.ConfigureAwait(false);

src/WireMock.Net/RequestMessage.cs

@@ -177,25 +177,29 @@ public class RequestMessage : IRequestMessage
         DetectedBodyTypeFromContentType = BodyData?.DetectedBodyTypeFromContentType.ToString();
         DetectedCompression = BodyData?.DetectedCompression;
 
-#if MIMEKIT
-        try
-        {
-            BodyAsMimeMessage = MimeKitUtils.GetMimeMessage(BodyData, headers![HttpKnownHeaderNames.ContentType].First());
-        }
-        catch
-        {
-            // Ignore exception from MimeMessage.Load
-        }
-#endif
-
         Headers = headers?.ToDictionary(header => header.Key, header => new WireMockList<string>(header.Value));
         Cookies = cookies;
         RawQuery = urlDetails.Url.Query;
         Query = QueryStringParser.Parse(RawQuery, options?.QueryParameterMultipleValueSupport);
         QueryIgnoreCase = new Dictionary<string, WireMockList<string>>(Query, StringComparer.OrdinalIgnoreCase);
+
 #if USE_ASPNETCORE
         ClientCertificate = clientCertificate;
 #endif
+
+#if MIMEKIT
+        try
+        {
+            if (MimeKitUtils.TryGetMimeMessage(this, out var mimeMessage))
+            {
+                BodyAsMimeMessage = mimeMessage;
+            }
+        }
+        catch
+        {
+            // Ignore exception from MimeMessage.Load
+        }
+#endif
     }
 
     /// <inheritdoc />

src/WireMock.Net/ResponseMessageBuilder.cs

@@ -16,12 +16,17 @@ internal static class ResponseMessageBuilder
         { HttpKnownHeaderNames.ContentType, new WireMockList<string> { WireMockConstants.ContentTypeJson } }
     };
 
-    internal static ResponseMessage Create(string? message, HttpStatusCode statusCode, Guid? guid = null)
+    internal static ResponseMessage Create(HttpStatusCode statusCode, string? status, Guid? guid = null)
     {
-        return Create(message, (int)statusCode, guid);
+        return Create((int)statusCode, status, guid);
     }
 
-    internal static ResponseMessage Create(string? message, int statusCode = 200, Guid? guid = null)
+    internal static ResponseMessage Create(int statusCode, string? status, Guid? guid = null)
+    {
+        return Create(statusCode, status, null, guid);
+    }
+
+    internal static ResponseMessage Create(int statusCode, string? status, string? error, Guid? guid = null)
     {
         var response = new ResponseMessage
         {
@@ -29,7 +34,7 @@ internal static class ResponseMessageBuilder
             Headers = ContentTypeJsonHeaders
         };
 
-        if (message != null)
+        if (status != null || error != null)
         {
             response.BodyData = new BodyData
             {
@@ -37,7 +42,8 @@ internal static class ResponseMessageBuilder
                 BodyAsJson = new StatusModel
                 {
                     Guid = guid,
-                    Status = message
+                    Status = status,
+                    Error = error
                 }
             };
         }
@@ -45,7 +51,7 @@ internal static class ResponseMessageBuilder
         return response;
     }
 
-    internal static ResponseMessage Create(int statusCode)
+    internal static ResponseMessage Create(HttpStatusCode statusCode)
     {
         return new ResponseMessage
         {

src/WireMock.Net/Serialization/MappingConverter.cs

@@ -139,7 +139,6 @@ internal class MappingConverter
                 sb.AppendLine(@$"        .WithBody(new JsonPartialMatcher(
                                             value: {ToCSharpStringLiteral(jsonPartialMatcher.Value.ToString())},
                                             ignoreCase: {ToCSharpBooleanLiteral(jsonPartialMatcher.IgnoreCase)},
-                                            throwException: {ToCSharpBooleanLiteral(jsonPartialMatcher.ThrowException)},
                                             regex: {ToCSharpBooleanLiteral(jsonPartialMatcher.Regex)}
                                          ))");
             }
@@ -148,7 +147,6 @@ internal class MappingConverter
                 sb.AppendLine(@$"        .WithBody(new JsonPartialWildcardMatcher(
                                             value: {ToCSharpStringLiteral(jsonPartialWildcardMatcher.Value.ToString())},
                                             ignoreCase: {ToCSharpBooleanLiteral(jsonPartialWildcardMatcher.IgnoreCase)},
-                                            throwException: {ToCSharpBooleanLiteral(jsonPartialWildcardMatcher.ThrowException)},
                                             regex: {ToCSharpBooleanLiteral(jsonPartialWildcardMatcher.Regex)}
                                          ))");
             }

src/WireMock.Net/Serialization/MatcherMapper.cs

@@ -46,7 +46,6 @@ internal class MatcherMapper
         var matchBehaviour = matcher.RejectOnMatch == true ? MatchBehaviour.RejectOnMatch : MatchBehaviour.AcceptOnMatch;
         var matchOperator = StringUtils.ParseMatchOperator(matcher.MatchOperator);
         bool ignoreCase = matcher.IgnoreCase == true;
-        bool throwExceptionWhenMatcherFails = _settings.ThrowExceptionWhenMatcherFails == true;
         bool useRegexExtended = _settings.UseRegexExtended == true;
         bool useRegex = matcher.Regex == true;
 
@@ -64,51 +63,51 @@ internal class MatcherMapper
                 throw new NotSupportedException("It's not allowed to use the 'CSharpCodeMatcher' because WireMockServerSettings.AllowCSharpCodeMatcher is not set to 'true'.");
 
             case nameof(LinqMatcher):
-                return new LinqMatcher(matchBehaviour, throwExceptionWhenMatcherFails, matchOperator, stringPatterns);
+                return new LinqMatcher(matchBehaviour, matchOperator, stringPatterns);
 
             case nameof(ExactMatcher):
-                return new ExactMatcher(matchBehaviour, ignoreCase, throwExceptionWhenMatcherFails, matchOperator, stringPatterns);
+                return new ExactMatcher(matchBehaviour, ignoreCase, matchOperator, stringPatterns);
 
             case nameof(ExactObjectMatcher):
-                return CreateExactObjectMatcher(matchBehaviour, stringPatterns[0], throwExceptionWhenMatcherFails);
+                return CreateExactObjectMatcher(matchBehaviour, stringPatterns[0]);
 #if GRAPHQL
             case nameof(GraphQLMatcher):
-                return new GraphQLMatcher(stringPatterns[0].GetPattern(), matchBehaviour, throwExceptionWhenMatcherFails, matchOperator);
+                return new GraphQLMatcher(stringPatterns[0].GetPattern(), matchBehaviour, matchOperator);
 #endif
 
 #if MIMEKIT
             case nameof(MimePartMatcher):
-                return CreateMimePartMatcher(matchBehaviour, matcher, throwExceptionWhenMatcherFails);
+                return CreateMimePartMatcher(matchBehaviour, matcher);
 #endif
             case nameof(RegexMatcher):
-                return new RegexMatcher(matchBehaviour, stringPatterns, ignoreCase, throwExceptionWhenMatcherFails, useRegexExtended, matchOperator);
+                return new RegexMatcher(matchBehaviour, stringPatterns, ignoreCase, useRegexExtended, matchOperator);
 
             case nameof(JsonMatcher):
                 var valueForJsonMatcher = matcher.Pattern ?? matcher.Patterns;
-                return new JsonMatcher(matchBehaviour, valueForJsonMatcher!, ignoreCase, throwExceptionWhenMatcherFails);
+                return new JsonMatcher(matchBehaviour, valueForJsonMatcher!, ignoreCase);
 
             case nameof(JsonPartialMatcher):
                 var valueForJsonPartialMatcher = matcher.Pattern ?? matcher.Patterns;
-                return new JsonPartialMatcher(matchBehaviour, valueForJsonPartialMatcher!, ignoreCase, throwExceptionWhenMatcherFails, useRegex);
+                return new JsonPartialMatcher(matchBehaviour, valueForJsonPartialMatcher!, ignoreCase, useRegex);
 
             case nameof(JsonPartialWildcardMatcher):
                 var valueForJsonPartialWildcardMatcher = matcher.Pattern ?? matcher.Patterns;
-                return new JsonPartialWildcardMatcher(matchBehaviour, valueForJsonPartialWildcardMatcher!, ignoreCase, throwExceptionWhenMatcherFails, useRegex);
+                return new JsonPartialWildcardMatcher(matchBehaviour, valueForJsonPartialWildcardMatcher!, ignoreCase, useRegex);
 
             case nameof(JsonPathMatcher):
-                return new JsonPathMatcher(matchBehaviour, throwExceptionWhenMatcherFails, matchOperator, stringPatterns);
+                return new JsonPathMatcher(matchBehaviour, matchOperator, stringPatterns);
 
             case nameof(JmesPathMatcher):
-                return new JmesPathMatcher(matchBehaviour, throwExceptionWhenMatcherFails, matchOperator, stringPatterns);
+                return new JmesPathMatcher(matchBehaviour, matchOperator, stringPatterns);
 
             case nameof(XPathMatcher):
-                return new XPathMatcher(matchBehaviour, throwExceptionWhenMatcherFails, matchOperator, stringPatterns);
+                return new XPathMatcher(matchBehaviour, matchOperator, stringPatterns);
 
             case nameof(WildcardMatcher):
-                return new WildcardMatcher(matchBehaviour, stringPatterns, ignoreCase, throwExceptionWhenMatcherFails, matchOperator);
+                return new WildcardMatcher(matchBehaviour, stringPatterns, ignoreCase, matchOperator);
 
             case nameof(ContentTypeMatcher):
-                return new ContentTypeMatcher(matchBehaviour, stringPatterns, ignoreCase, throwExceptionWhenMatcherFails);
+                return new ContentTypeMatcher(matchBehaviour, stringPatterns, ignoreCase);
 
             case nameof(SimMetricsMatcher):
                 SimMetricType type = SimMetricType.Levenstein;
@@ -117,7 +116,7 @@ internal class MatcherMapper
                     throw new NotSupportedException($"Matcher '{matcherName}' with Type '{matcherType}' is not supported.");
                 }
 
-                return new SimMetricsMatcher(matchBehaviour, stringPatterns, type, throwExceptionWhenMatcherFails);
+                return new SimMetricsMatcher(matchBehaviour, stringPatterns, type);
 
             default:
                 if (_settings.CustomMatcherMappings != null && _settings.CustomMatcherMappings.ContainsKey(matcherName))
@@ -236,7 +235,7 @@ internal class MatcherMapper
         return EmptyArray<AnyOf<string, StringPattern>>.Value;
     }
 
-    private static ExactObjectMatcher CreateExactObjectMatcher(MatchBehaviour matchBehaviour, AnyOf<string, StringPattern> stringPattern, bool throwException)
+    private static ExactObjectMatcher CreateExactObjectMatcher(MatchBehaviour matchBehaviour, AnyOf<string, StringPattern> stringPattern)
     {
         byte[] bytePattern;
         try
@@ -248,18 +247,18 @@ internal class MatcherMapper
             throw new ArgumentException($"Matcher 'ExactObjectMatcher' has invalid pattern. The pattern value '{stringPattern}' is not a Base64String.", nameof(stringPattern));
         }
 
-        return new ExactObjectMatcher(matchBehaviour, bytePattern, throwException);
+        return new ExactObjectMatcher(matchBehaviour, bytePattern);
     }
 
 #if MIMEKIT
-    private MimePartMatcher CreateMimePartMatcher(MatchBehaviour matchBehaviour, MatcherModel? matcher, bool throwExceptionWhenMatcherFails)
+    private MimePartMatcher CreateMimePartMatcher(MatchBehaviour matchBehaviour, MatcherModel? matcher)
     {
         var contentTypeMatcher = Map(matcher?.ContentTypeMatcher) as IStringMatcher;
         var contentDispositionMatcher = Map(matcher?.ContentDispositionMatcher) as IStringMatcher;
         var contentTransferEncodingMatcher = Map(matcher?.ContentTransferEncodingMatcher) as IStringMatcher;
         var contentMatcher = Map(matcher?.ContentMatcher);
 
-        return new MimePartMatcher(matchBehaviour, contentTypeMatcher, contentDispositionMatcher, contentTransferEncodingMatcher, contentMatcher, throwExceptionWhenMatcherFails);
+        return new MimePartMatcher(matchBehaviour, contentTypeMatcher, contentDispositionMatcher, contentTransferEncodingMatcher, contentMatcher);
     }
 #endif
 }

src/WireMock.Net/Serialization/ProxyMappingConverter.cs

@@ -30,8 +30,8 @@ internal class ProxyMappingConverter
     {
         var useDefinedRequestMatchers = proxyAndRecordSettings.UseDefinedRequestMatchers;
         var excludedHeaders = new List<string>(proxyAndRecordSettings.ExcludedHeaders ?? new string[] { }) { "Cookie" };
-        var excludedCookies = proxyAndRecordSettings.ExcludedCookies ?? new string[0];
+        var excludedCookies = proxyAndRecordSettings.ExcludedCookies ?? EmptyArray<string>.Value;
-        var excludedParams = proxyAndRecordSettings.ExcludedParams ?? new string[0];
+        var excludedParams = proxyAndRecordSettings.ExcludedParams ?? EmptyArray<string>.Value;
 
         var request = (Request?)mapping?.RequestMatcher;
         var clientIPMatcher = request?.GetRequestMessageMatcher<RequestMessageClientIPMatcher>();
@@ -137,7 +137,6 @@ internal class ProxyMappingConverter
         }
 
         // Body
-        bool throwExceptionWhenMatcherFails = _settings.ThrowExceptionWhenMatcherFails == true;
         if (useDefinedRequestMatchers && bodyMatcher?.Matchers is not null)
         {
             newRequest.WithBody(bodyMatcher.Matchers);
@@ -147,16 +146,16 @@ internal class ProxyMappingConverter
             switch (requestMessage.BodyData?.DetectedBodyType)
             {
                 case BodyType.Json:
-                    newRequest.WithBody(new JsonMatcher(MatchBehaviour.AcceptOnMatch, requestMessage.BodyData.BodyAsJson!, true, throwExceptionWhenMatcherFails));
+                    newRequest.WithBody(new JsonMatcher(MatchBehaviour.AcceptOnMatch, requestMessage.BodyData.BodyAsJson!, true));
                     break;
 
                 case BodyType.String:
                 case BodyType.FormUrlEncoded:
-                    newRequest.WithBody(new ExactMatcher(MatchBehaviour.AcceptOnMatch, true, throwExceptionWhenMatcherFails, MatchOperator.Or, requestMessage.BodyData.BodyAsString!));
+                    newRequest.WithBody(new ExactMatcher(MatchBehaviour.AcceptOnMatch, true, MatchOperator.Or, requestMessage.BodyData.BodyAsString!));
                     break;
 
                 case BodyType.Bytes:
-                    newRequest.WithBody(new ExactObjectMatcher(MatchBehaviour.AcceptOnMatch, requestMessage.BodyData.BodyAsBytes!, throwExceptionWhenMatcherFails));
+                    newRequest.WithBody(new ExactObjectMatcher(MatchBehaviour.AcceptOnMatch, requestMessage.BodyData.BodyAsBytes!));
                     break;
             }
         }

src/WireMock.Net/Server/WireMockServer.Admin.cs

@@ -237,7 +237,6 @@ public partial class WireMockServer
             ReadStaticMappings = _settings.ReadStaticMappings,
             RequestLogExpirationDuration = _settings.RequestLogExpirationDuration,
             SaveUnmatchedRequests = _settings.SaveUnmatchedRequests,
-            ThrowExceptionWhenMatcherFails = _settings.ThrowExceptionWhenMatcherFails,
             UseRegexExtended = _settings.UseRegexExtended,
             WatchStaticMappings = _settings.WatchStaticMappings,
             WatchStaticMappingsInSubdirectories = _settings.WatchStaticMappingsInSubdirectories,
@@ -273,7 +272,6 @@ public partial class WireMockServer
         _settings.ReadStaticMappings = settings.ReadStaticMappings;
         _settings.RequestLogExpirationDuration = settings.RequestLogExpirationDuration;
         _settings.SaveUnmatchedRequests = settings.SaveUnmatchedRequests;
-        _settings.ThrowExceptionWhenMatcherFails = settings.ThrowExceptionWhenMatcherFails;
         _settings.UseRegexExtended = settings.UseRegexExtended;
         _settings.WatchStaticMappings = settings.WatchStaticMappings;
         _settings.WatchStaticMappingsInSubdirectories = settings.WatchStaticMappingsInSubdirectories;
@@ -303,7 +301,7 @@ public partial class WireMockServer
         _options.AcceptAnyClientCertificate = _settings.AcceptAnyClientCertificate;
 #endif
 
-        return ResponseMessageBuilder.Create("Settings updated");
+        return ResponseMessageBuilder.Create(200, "Settings updated");
     }
     #endregion Settings
 
@@ -314,7 +312,7 @@ public partial class WireMockServer
         if (mapping == null)
         {
             _settings.Logger.Warn("HttpStatusCode set to 404 : Mapping not found");
-            return ResponseMessageBuilder.Create("Mapping not found", HttpStatusCode.NotFound);
+            return ResponseMessageBuilder.Create(HttpStatusCode.NotFound, "Mapping not found");
         }
 
         var model = _mappingConverter.ToMappingModel(mapping);
@@ -330,14 +328,14 @@ public partial class WireMockServer
             if (code is null)
             {
                 _settings.Logger.Warn("HttpStatusCode set to 404 : Mapping not found");
-                return ResponseMessageBuilder.Create("Mapping not found", HttpStatusCode.NotFound);
+                return ResponseMessageBuilder.Create(HttpStatusCode.NotFound, "Mapping not found");
             }
 
             return ToResponseMessage(code);
         }
 
         _settings.Logger.Warn("HttpStatusCode set to 400");
-        return ResponseMessageBuilder.Create("GUID is missing", HttpStatusCode.BadRequest);
+        return ResponseMessageBuilder.Create(HttpStatusCode.BadRequest, "GUID is missing");
     }
 
     private static MappingConverterType GetMappingConverterType(IRequestMessage requestMessage)
@@ -365,22 +363,22 @@ public partial class WireMockServer
             var mappingModel = DeserializeObject<MappingModel>(requestMessage);
             var guidFromPut = ConvertMappingAndRegisterAsRespondProvider(mappingModel, guid);
 
-            return ResponseMessageBuilder.Create("Mapping added or updated", HttpStatusCode.OK, guidFromPut);
+            return ResponseMessageBuilder.Create(HttpStatusCode.OK, "Mapping added or updated", guidFromPut);
         }
 
         _settings.Logger.Warn("HttpStatusCode set to 404 : Mapping not found");
-        return ResponseMessageBuilder.Create("Mapping not found", HttpStatusCode.NotFound);
+        return ResponseMessageBuilder.Create(HttpStatusCode.NotFound, "Mapping not found");
     }
 
     private IResponseMessage MappingDelete(IRequestMessage requestMessage)
     {
         if (TryParseGuidFromRequestMessage(requestMessage, out var guid) && DeleteMapping(guid))
         {
-            return ResponseMessageBuilder.Create("Mapping removed", HttpStatusCode.OK, guid);
+            return ResponseMessageBuilder.Create(HttpStatusCode.OK, "Mapping removed", guid);
         }
 
         _settings.Logger.Warn("HttpStatusCode set to 404 : Mapping not found");
-        return ResponseMessageBuilder.Create("Mapping not found", HttpStatusCode.NotFound);
+        return ResponseMessageBuilder.Create(HttpStatusCode.NotFound, "Mapping not found");
     }
 
     private static bool TryParseGuidFromRequestMessage(IRequestMessage requestMessage, out Guid guid)
@@ -409,7 +407,7 @@ public partial class WireMockServer
     {
         SaveStaticMappings();
 
-        return ResponseMessageBuilder.Create("Mappings saved to disk");
+        return ResponseMessageBuilder.Create(200, "Mappings saved to disk");
     }
 
     private MappingModel[] ToMappingModels()
@@ -439,22 +437,22 @@ public partial class WireMockServer
             if (mappingModels.Length == 1)
             {
                 Guid? guid = ConvertMappingAndRegisterAsRespondProvider(mappingModels[0]);
-                return ResponseMessageBuilder.Create("Mapping added", 201, guid);
+                return ResponseMessageBuilder.Create(201, "Mapping added", guid);
             }
 
             ConvertMappingsAndRegisterAsRespondProvider(mappingModels);
 
-            return ResponseMessageBuilder.Create("Mappings added", 201);
+            return ResponseMessageBuilder.Create(201, "Mappings added");
         }
         catch (ArgumentException a)
         {
             _settings.Logger.Error("HttpStatusCode set to 400 {0}", a);
-            return ResponseMessageBuilder.Create(a.Message, 400);
+            return ResponseMessageBuilder.Create(400, a.Message);
         }
         catch (Exception e)
         {
             _settings.Logger.Error("HttpStatusCode set to 500 {0}", e);
-            return ResponseMessageBuilder.Create(e.ToString(), 500);
+            return ResponseMessageBuilder.Create(500, e.ToString());
         }
     }
 
@@ -465,18 +463,18 @@ public partial class WireMockServer
             var deletedGuids = MappingsDeleteMappingFromBody(requestMessage);
             if (deletedGuids != null)
             {
-                return ResponseMessageBuilder.Create($"Mappings deleted. Affected GUIDs: [{string.Join(", ", deletedGuids.ToArray())}]");
+                return ResponseMessageBuilder.Create(200, $"Mappings deleted. Affected GUIDs: [{string.Join(", ", deletedGuids.ToArray())}]");
             }
 
             // return bad request
-            return ResponseMessageBuilder.Create("Poorly formed mapping JSON.", 400);
+            return ResponseMessageBuilder.Create(400, "Poorly formed mapping JSON.");
         }
 
         ResetMappings();
 
         ResetScenarios();
 
-        return ResponseMessageBuilder.Create("Mappings deleted");
+        return ResponseMessageBuilder.Create(200, "Mappings deleted");
     }
 
     private IEnumerable<Guid>? MappingsDeleteMappingFromBody(IRequestMessage requestMessage)
@@ -528,7 +526,7 @@ public partial class WireMockServer
             message = $"{message} and static mappings reloaded";
         }
 
-        return ResponseMessageBuilder.Create(message);
+        return ResponseMessageBuilder.Create(200, message);
     }
     #endregion Mappings
 
@@ -546,18 +544,18 @@ public partial class WireMockServer
         }
 
         _settings.Logger.Warn("HttpStatusCode set to 404 : Request not found");
-        return ResponseMessageBuilder.Create("Request not found", HttpStatusCode.NotFound);
+        return ResponseMessageBuilder.Create(HttpStatusCode.NotFound, "Request not found");
     }
 
     private IResponseMessage RequestDelete(IRequestMessage requestMessage)
     {
         if (TryParseGuidFromRequestMessage(requestMessage, out var guid) && DeleteLogEntry(guid))
         {
-            return ResponseMessageBuilder.Create("Request removed");
+            return ResponseMessageBuilder.Create(200, "Request removed");
         }
 
         _settings.Logger.Warn("HttpStatusCode set to 404 : Request not found");
-        return ResponseMessageBuilder.Create("Request not found", HttpStatusCode.NotFound);
+        return ResponseMessageBuilder.Create(HttpStatusCode.NotFound, "Request not found");
     }
     #endregion Request/{guid}
 
@@ -576,7 +574,7 @@ public partial class WireMockServer
     {
         ResetLogEntries();
 
-        return ResponseMessageBuilder.Create("Requests deleted");
+        return ResponseMessageBuilder.Create(200, "Requests deleted");
     }
     #endregion Requests
 
@@ -623,7 +621,7 @@ public partial class WireMockServer
     {
         ResetScenarios();
 
-        return ResponseMessageBuilder.Create("Scenarios reset");
+        return ResponseMessageBuilder.Create(200, "Scenarios reset");
     }
 
     private IResponseMessage ScenarioReset(IRequestMessage requestMessage)
@@ -633,8 +631,8 @@ public partial class WireMockServer
             requestMessage.Path.Split('/').Reverse().Skip(1).First();
 
         return ResetScenario(name) ?
-            ResponseMessageBuilder.Create("Scenario reset") :
+            ResponseMessageBuilder.Create(200, "Scenario reset") :
-            ResponseMessageBuilder.Create($"No scenario found by name '{name}'.", HttpStatusCode.NotFound);
+            ResponseMessageBuilder.Create(HttpStatusCode.NotFound, $"No scenario found by name '{name}'.");
     }
     #endregion
 

src/WireMock.Net/Server/WireMockServer.AdminFiles.cs

@@ -1,5 +1,6 @@
 using System.IO;
 using System.Linq;
+using System.Net;
 using System.Text;
 using WireMock.Matchers;
 using WireMock.Types;
@@ -25,7 +26,7 @@ namespace WireMock.Server
 
             _settings.FileSystemHandler.WriteFile(filename, requestMessage.BodyAsBytes);
 
-            return ResponseMessageBuilder.Create("File created");
+            return ResponseMessageBuilder.Create(200, "File created");
         }
 
         private IResponseMessage FilePut(IRequestMessage requestMessage)
@@ -35,12 +36,12 @@ namespace WireMock.Server
             if (!_settings.FileSystemHandler.FileExists(filename))
             {
                 _settings.Logger.Info("The file '{0}' does not exist, updating file will be skipped.", filename);
-                return ResponseMessageBuilder.Create("File is not found", 404);
+                return ResponseMessageBuilder.Create(404, "File is not found");
             }
 
             _settings.FileSystemHandler.WriteFile(filename, requestMessage.BodyAsBytes);
 
-            return ResponseMessageBuilder.Create("File updated");
+            return ResponseMessageBuilder.Create(200, "File updated");
         }
 
         private IResponseMessage FileGet(IRequestMessage requestMessage)
@@ -50,7 +51,7 @@ namespace WireMock.Server
             if (!_settings.FileSystemHandler.FileExists(filename))
             {
                 _settings.Logger.Info("The file '{0}' does not exist.", filename);
-                return ResponseMessageBuilder.Create("File is not found", 404);
+                return ResponseMessageBuilder.Create(404, "File is not found");
             }
 
             byte[] bytes = _settings.FileSystemHandler.ReadFile(filename);
@@ -86,10 +87,10 @@ namespace WireMock.Server
             if (!_settings.FileSystemHandler.FileExists(filename))
             {
                 _settings.Logger.Info("The file '{0}' does not exist.", filename);
-                return ResponseMessageBuilder.Create(404);
+                return ResponseMessageBuilder.Create(HttpStatusCode.NotFound);
             }
 
-            return ResponseMessageBuilder.Create(204);
+            return ResponseMessageBuilder.Create(HttpStatusCode.NoContent);
         }
 
         private IResponseMessage FileDelete(IRequestMessage requestMessage)
@@ -99,11 +100,11 @@ namespace WireMock.Server
             if (!_settings.FileSystemHandler.FileExists(filename))
             {
                 _settings.Logger.Info("The file '{0}' does not exist.", filename);
-                return ResponseMessageBuilder.Create("File is not deleted", 404);
+                return ResponseMessageBuilder.Create(404, "File is not deleted");
             }
 
             _settings.FileSystemHandler.DeleteFile(filename);
-            return ResponseMessageBuilder.Create("File deleted.");
+            return ResponseMessageBuilder.Create(200, "File deleted.");
         }
 
         private string GetFileNameFromRequestMessage(IRequestMessage requestMessage)

src/WireMock.Net/Server/WireMockServer.ImportWireMockOrg.cs

@@ -52,7 +52,7 @@ public partial class WireMockServer
             if (mappingModels.Length == 1)
             {
                 Guid? guid = ConvertWireMockOrgMappingAndRegisterAsRespondProvider(mappingModels[0]);
-                return ResponseMessageBuilder.Create("Mapping added", 201, guid);
+                return ResponseMessageBuilder.Create(201, "Mapping added", guid);
             }
 
             foreach (var mappingModel in mappingModels)
@@ -60,17 +60,17 @@ public partial class WireMockServer
                 ConvertWireMockOrgMappingAndRegisterAsRespondProvider(mappingModel);
             }
 
-            return ResponseMessageBuilder.Create("Mappings added", 201);
+            return ResponseMessageBuilder.Create(201, "Mappings added");
         }
         catch (ArgumentException a)
         {
             _settings.Logger.Error("HttpStatusCode set to 400 {0}", a);
-            return ResponseMessageBuilder.Create(a.Message, 400);
+            return ResponseMessageBuilder.Create(400, a.Message);
         }
         catch (Exception e)
         {
             _settings.Logger.Error("HttpStatusCode set to 500 {0}", e);
-            return ResponseMessageBuilder.Create(e.ToString(), 500);
+            return ResponseMessageBuilder.Create(500, e.ToString());
         }
     }
 

src/WireMock.Net/Server/WireMockServer.OpenApiParser.cs

@@ -1,7 +1,7 @@
+using System.Net;
 #if OPENAPIPARSER
 using System;
 using System.Linq;
-using System.Net;
 using WireMock.Net.OpenApiParser;
 #endif
 
@@ -14,16 +14,16 @@ public partial class WireMockServer
 #if OPENAPIPARSER
         try
         {
-            var mappingModels = new WireMockOpenApiParser().FromText(requestMessage.Body, out var diagnostic);
+            var mappingModels = new WireMockOpenApiParser().FromText(requestMessage.Body!, out var diagnostic);
             return diagnostic.Errors.Any() ? ToJson(diagnostic, false, HttpStatusCode.BadRequest) : ToJson(mappingModels);
         }
         catch (Exception e)
         {
             _settings.Logger.Error("HttpStatusCode set to {0} {1}", HttpStatusCode.BadRequest, e);
-            return ResponseMessageBuilder.Create(e.Message, HttpStatusCode.BadRequest);
+            return ResponseMessageBuilder.Create(HttpStatusCode.BadRequest, e.Message);
         }
 #else
-        return ResponseMessageBuilder.Create("Not supported for .NETStandard 1.3 and .NET 4.5.2 or lower.", 400);
+        return ResponseMessageBuilder.Create(HttpStatusCode.BadRequest, "Not supported for .NETStandard 1.3 and .NET 4.5.2 or lower.");
 #endif
     }
 
@@ -32,7 +32,7 @@ public partial class WireMockServer
 #if OPENAPIPARSER
         try
         {
-            var mappingModels = new WireMockOpenApiParser().FromText(requestMessage.Body, out var diagnostic);
+            var mappingModels = new WireMockOpenApiParser().FromText(requestMessage.Body!, out var diagnostic);
             if (diagnostic.Errors.Any())
             {
                 return ToJson(diagnostic, false, HttpStatusCode.BadRequest);
@@ -40,15 +40,15 @@ public partial class WireMockServer
 
             ConvertMappingsAndRegisterAsRespondProvider(mappingModels);
 
-            return ResponseMessageBuilder.Create("OpenApi document converted to Mappings", HttpStatusCode.Created);
+            return ResponseMessageBuilder.Create(HttpStatusCode.Created, "OpenApi document converted to Mappings");
         }
         catch (Exception e)
         {
             _settings.Logger.Error("HttpStatusCode set to {0} {1}", HttpStatusCode.BadRequest, e);
-            return ResponseMessageBuilder.Create(e.Message, HttpStatusCode.BadRequest);
+            return ResponseMessageBuilder.Create(HttpStatusCode.BadRequest, e.Message);
         }
 #else
-        return ResponseMessageBuilder.Create("Not supported for .NETStandard 1.3 and .NET 4.5.2 or lower.", 400);
+        return ResponseMessageBuilder.Create(HttpStatusCode.BadRequest, "Not supported for .NETStandard 1.3 and .NET 4.5.2 or lower.");
 #endif
     }
 }

src/WireMock.Net/Server/WireMockServer.cs

@@ -4,6 +4,7 @@ using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
+using System.Net;
 using System.Net.Http;
 using System.Threading;
 using JetBrains.Annotations;
@@ -11,6 +12,7 @@ using Newtonsoft.Json;
 using Stef.Validation;
 using WireMock.Admin.Mappings;
 using WireMock.Authentication;
+using WireMock.Constants;
 using WireMock.Exceptions;
 using WireMock.Handlers;
 using WireMock.Http;
@@ -391,7 +393,7 @@ public partial class WireMockServer : IWireMockServer
         Given(Request.Create().WithPath("/*").UsingAnyMethod())
             .WithGuid(Guid.Parse("90008000-0000-4444-a17e-669cd84f1f05"))
             .AtPriority(1000)
-            .RespondWith(new DynamicResponseProvider(_ => ResponseMessageBuilder.Create("No matching mapping found", 404)));
+            .RespondWith(new DynamicResponseProvider(_ => ResponseMessageBuilder.Create(HttpStatusCode.NotFound, WireMockConstants.NoMatchingFound)));
     }
 
     /// <inheritdoc cref="IWireMockServer.Reset" />

src/WireMock.Net/Settings/WireMockServerSettings.cs

@@ -221,12 +221,6 @@ public class WireMockServerSettings
     [PublicAPI]
     public bool? HandleRequestsSynchronously { get; set; }
 
-    /// <summary>
-    /// Throw an exception when the <see cref="IMatcher"/> fails because of invalid input. (default set to <c>false</c>).
-    /// </summary>
-    [PublicAPI]
-    public bool? ThrowExceptionWhenMatcherFails { get; set; }
-
     /// <summary>
     /// If https is used, these settings can be used to configure the CertificateSettings in case a custom certificate instead the default .NET certificate should be used.
     ///

src/WireMock.Net/Settings/WireMockServerSettingsParser.cs

@@ -57,7 +57,6 @@ public static class WireMockServerSettingsParser
             SaveUnmatchedRequests = parser.GetBoolValue(nameof(WireMockServerSettings.SaveUnmatchedRequests)),
             StartAdminInterface = parser.GetBoolValue("StartAdminInterface", true),
             StartTimeout = parser.GetIntValue(nameof(WireMockServerSettings.StartTimeout), WireMockServerSettings.DefaultStartTimeout),
-            ThrowExceptionWhenMatcherFails = parser.GetBoolValue("ThrowExceptionWhenMatcherFails"),
             UseRegexExtended = parser.GetBoolValue(nameof(WireMockServerSettings.UseRegexExtended), true),
             WatchStaticMappings = parser.GetBoolValue("WatchStaticMappings"),
             WatchStaticMappingsInSubdirectories = parser.GetBoolValue("WatchStaticMappingsInSubdirectories"),

src/WireMock.Net/Util/BodyParser.cs

@@ -85,27 +85,27 @@ internal static class BodyParser
 
     public static BodyType DetectBodyTypeFromContentType(string? contentTypeValue)
     {
-        if (string.IsNullOrEmpty(contentTypeValue) || !MediaTypeHeaderValue.TryParse(contentTypeValue, out MediaTypeHeaderValue contentType))
+        if (string.IsNullOrEmpty(contentTypeValue) || !MediaTypeHeaderValue.TryParse(contentTypeValue, out MediaTypeHeaderValue? contentType))
         {
             return BodyType.Bytes;
         }
 
-        if (MatchScores.IsPerfect(FormUrlEncodedMatcher.IsMatch(contentType.MediaType)))
+        if (FormUrlEncodedMatcher.IsMatch(contentType.MediaType).IsPerfect())
         {
             return BodyType.FormUrlEncoded;
         }
 
-        if (TextContentTypeMatchers.Any(matcher => MatchScores.IsPerfect(matcher.IsMatch(contentType.MediaType))))
+        if (TextContentTypeMatchers.Any(matcher => matcher.IsMatch(contentType.MediaType).IsPerfect()))
         {
             return BodyType.String;
         }
 
-        if (JsonContentTypesMatchers.Any(matcher => MatchScores.IsPerfect(matcher.IsMatch(contentType.MediaType))))
+        if (JsonContentTypesMatchers.Any(matcher => matcher.IsMatch(contentType.MediaType).IsPerfect()))
         {
             return BodyType.Json;
         }
 
-        if (MultipartContentTypesMatchers.Any(matcher => MatchScores.IsPerfect(matcher.IsMatch(contentType.MediaType))))
+        if (MultipartContentTypesMatchers.Any(matcher => matcher.IsMatch(contentType.MediaType).IsPerfect()))
         {
             return BodyType.MultiPart;
         }

src/WireMock.Net/Util/MimeKitUtils.cs

@@ -1,8 +1,11 @@
 #if MIMEKIT
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.IO;
+using System.Linq;
 using System.Text;
 using MimeKit;
+using Stef.Validation;
 using WireMock.Http;
 using WireMock.Types;
 
@@ -10,21 +13,31 @@ namespace WireMock.Util;
 
 internal static class MimeKitUtils
 {
-    public static MimeMessage GetMimeMessage(IBodyData? bodyData, string contentTypeHeaderValue)
+    public static bool TryGetMimeMessage(IRequestMessage requestMessage, [NotNullWhen(true)] out MimeMessage? mimeMessage)
     {
-        var bytes = bodyData?.DetectedBodyType switch
+        Guard.NotNull(requestMessage);
+
+        if (requestMessage.BodyData != null && requestMessage.Headers?.TryGetValue(HttpKnownHeaderNames.ContentType, out var contentTypeHeader) == true && contentTypeHeader.Any())
         {
-            // If the body is bytes, use the BodyAsBytes to match on.
+            var bytes = requestMessage.BodyData?.DetectedBodyType switch
-            BodyType.Bytes => bodyData.BodyAsBytes!,
+            {
+                // If the body is bytes, use the BodyAsBytes to match on.
+                BodyType.Bytes => requestMessage.BodyData.BodyAsBytes!,
 
-            // If the body is a String or MultiPart, use the BodyAsString to match on.
+                // If the body is a String or MultiPart, use the BodyAsString to match on.
-            BodyType.String or BodyType.MultiPart => Encoding.UTF8.GetBytes(bodyData.BodyAsString!),
+                BodyType.String or BodyType.MultiPart => Encoding.UTF8.GetBytes(requestMessage.BodyData.BodyAsString!),
 
-            _ => throw new NotSupportedException()
+                _ => throw new NotSupportedException()
-        };
+            };
 
-        var fixedBytes = FixBytes(bytes, contentTypeHeaderValue);
+            var fixedBytes = FixBytes(bytes, contentTypeHeader[0]);
-        return MimeMessage.Load(new MemoryStream(fixedBytes));
+
+            mimeMessage = MimeMessage.Load(new MemoryStream(fixedBytes));
+            return true;
+        }
+
+        mimeMessage = null;
+        return false;
     }
 
     private static byte[] FixBytes(byte[] bytes, WireMockList<string> contentType)

test/WireMock.Net.Tests/Matchers/CSharpCodeMatcherTests.cs

@@ -1,3 +1,4 @@
+using FluentAssertions;
 using NFluent;
 using WireMock.Matchers;
 using Xunit;
@@ -11,12 +12,13 @@ public class CSharpCodeMatcherTests
     {
         // Assign
         string input = "x";
-
-        // Act
         var matcher = new CSharpCodeMatcher("return it == \"x\";");
 
+        // Act
+        var score = matcher.IsMatch(input).Score;
+
         // Assert
-        Check.That(matcher.IsMatch(input)).IsEqualTo(1.0d);
+        score.Should().Be(MatchScores.Perfect);
     }
 
     [Fact]
@@ -24,12 +26,13 @@ public class CSharpCodeMatcherTests
     {
         // Assign
         string input = "y";
-
-        // Act
         var matcher = new CSharpCodeMatcher("return it == \"x\";");
 
+        // Act
+        var score = matcher.IsMatch(input).Score;
+
         // Assert
-        Check.That(matcher.IsMatch(input)).IsEqualTo(0.0d);
+        score.Should().Be(MatchScores.Mismatch);
     }
 
     [Fact]
@@ -37,12 +40,13 @@ public class CSharpCodeMatcherTests
     {
         // Assign
         string input = "x";
-
-        // Act
         var matcher = new CSharpCodeMatcher(MatchBehaviour.RejectOnMatch, MatchOperator.Or, "return it == \"x\";");
 
+        // Act
+        var score = matcher.IsMatch(input).Score;
+
         // Assert
-        Check.That(matcher.IsMatch(input)).IsEqualTo(0.0d);
+        score.Should().Be(MatchScores.Mismatch);
     }
 
     [Fact]
@@ -55,12 +59,13 @@ public class CSharpCodeMatcherTests
             Name = "Test"
         };
 
-        // Act
         var matcher = new CSharpCodeMatcher("return it.Id > 1 && it.Name == \"Test\";");
-        double match = matcher.IsMatch(input);
+
+        // Act
+        var score = matcher.IsMatch(input).Score;
 
         // Assert
-        Assert.Equal(1.0, match);
+        score.Should().Be(MatchScores.Perfect);
     }
 
     [Fact]

test/WireMock.Net.Tests/Matchers/ContentTypeMatcherTests.cs

@@ -1,3 +1,4 @@
+using FluentAssertions;
 using NFluent;
 using WireMock.Matchers;
 using Xunit;
@@ -14,7 +15,12 @@ public class ContentTypeMatcherTests
     public void ContentTypeMatcher_IsMatchWithIgnoreCaseFalse_Positive(string contentType)
     {
         var matcher = new ContentTypeMatcher("application/json");
-        Check.That(matcher.IsMatch(contentType)).IsEqualTo(1.0d);
+
+        // Act
+        var score = matcher.IsMatch(contentType).Score;
+
+        // Assert
+        score.Should().Be(MatchScores.Perfect);
     }
 
     [Theory]
@@ -26,7 +32,12 @@ public class ContentTypeMatcherTests
     public void ContentTypeMatcher_IsMatchWithIgnoreCaseTrue_Positive(string contentType)
     {
         var matcher = new ContentTypeMatcher("application/json", true);
-        Check.That(matcher.IsMatch(contentType)).IsEqualTo(1.0d);
+
+        // Act
+        var score = matcher.IsMatch(contentType).Score;
+
+        // Assert
+        score.Should().Be(MatchScores.Perfect);
     }
 
     [Fact]

test/WireMock.Net.Tests/Matchers/ExactMatcherTests.cs

@@ -39,7 +39,7 @@ public class ExactMatcherTests
         var matcher = new ExactMatcher(true, "x");
 
         // Act
-        double result = matcher.IsMatch("X");
+        double result = matcher.IsMatch("X").Score;
 
         // Assert
         Check.That(result).IsEqualTo(1.0);
@@ -52,7 +52,7 @@ public class ExactMatcherTests
         var matcher = new ExactMatcher("x");
 
         // Act
-        double result = matcher.IsMatch("x");
+        double result = matcher.IsMatch("x").Score;
 
         // Assert
         Check.That(result).IsEqualTo(1.0);
@@ -65,7 +65,7 @@ public class ExactMatcherTests
         var matcher = new ExactMatcher("x");
 
         // Act
-        double result = matcher.IsMatch("y");
+        double result = matcher.IsMatch("y").Score;
 
         // Assert
         Check.That(result).IsEqualTo(0.0);
@@ -78,7 +78,7 @@ public class ExactMatcherTests
         var matcher = new ExactMatcher("x", "y");
 
         // Act
-        double result = matcher.IsMatch("x");
+        double result = matcher.IsMatch("x").Score;
 
         // Assert
         Check.That(result).IsEqualTo(1.0);
@@ -91,7 +91,7 @@ public class ExactMatcherTests
         var matcher = new ExactMatcher("x", "y");
 
         // Act
-        double result = matcher.IsMatch("x");
+        double result = matcher.IsMatch("x").Score;
 
         // Assert
         Check.That(result).IsEqualTo(1.0);
@@ -104,10 +104,10 @@ public class ExactMatcherTests
     public void ExactMatcher_IsMatch_WithMultiplePatterns_Average_ReturnsMatch(MatchOperator matchOperator, double score)
     {
         // Assign
-        var matcher = new ExactMatcher(MatchBehaviour.AcceptOnMatch, false, false, matchOperator, "x", "y");
+        var matcher = new ExactMatcher(MatchBehaviour.AcceptOnMatch, false, matchOperator, "x", "y");
 
         // Act
-        double result = matcher.IsMatch("x");
+        double result = matcher.IsMatch("x").Score;
 
         // Assert
         Check.That(result).IsEqualTo(score);
@@ -120,7 +120,7 @@ public class ExactMatcherTests
         var matcher = new ExactMatcher("cat");
 
         // Act
-        double result = matcher.IsMatch("caR");
+        double result = matcher.IsMatch("caR").Score;
 
         // Assert
         Check.That(result).IsEqualTo(0.0);
@@ -130,10 +130,10 @@ public class ExactMatcherTests
     public void ExactMatcher_IsMatch_SinglePattern_AcceptOnMatch()
     {
         // Assign
-        var matcher = new ExactMatcher(MatchBehaviour.AcceptOnMatch, false, false, MatchOperator.Or, "cat");
+        var matcher = new ExactMatcher(MatchBehaviour.AcceptOnMatch, false, MatchOperator.Or, "cat");
 
         // Act
-        double result = matcher.IsMatch("cat");
+        double result = matcher.IsMatch("cat").Score;
 
         // Assert
         Check.That(result).IsEqualTo(1.0);
@@ -143,10 +143,10 @@ public class ExactMatcherTests
     public void ExactMatcher_IsMatch_SinglePattern_RejectOnMatch()
     {
         // Assign
-        var matcher = new ExactMatcher(MatchBehaviour.RejectOnMatch, false, false, MatchOperator.Or, "cat");
+        var matcher = new ExactMatcher(MatchBehaviour.RejectOnMatch, false, MatchOperator.Or, "cat");
 
         // Act
-        double result = matcher.IsMatch("cat");
+        double result = matcher.IsMatch("cat").Score;
 
         // Assert
         Check.That(result).IsEqualTo(0.0);

test/WireMock.Net.Tests/Matchers/ExactObjectMatcherTests.cs

@@ -14,7 +14,7 @@ public class ExactObjectMatcherTests
 
         // Act
         var matcher = new ExactObjectMatcher(obj);
-        string name = matcher.Name;
+        var name = matcher.Name;
 
         // Assert
         Check.That(name).Equals("ExactObjectMatcher");
@@ -28,10 +28,10 @@ public class ExactObjectMatcherTests
 
         // Act
         var matcher = new ExactObjectMatcher(new byte[] { 1, 2 });
-        double result = matcher.IsMatch(checkValue);
+        var score = matcher.IsMatch(checkValue).Score;
 
         // Assert
-        Check.That(result).IsEqualTo(1.0);
+        Check.That(score).IsEqualTo(1.0);
     }
 
     [Fact]
@@ -42,10 +42,10 @@ public class ExactObjectMatcherTests
 
         // Act
         var matcher = new ExactObjectMatcher(obj);
-        double result = matcher.IsMatch(new { x = 500, s = "s" });
+        var score = matcher.IsMatch(new { x = 500, s = "s" }).Score;
 
         // Assert
-        Check.That(result).IsEqualTo(1.0);
+        Check.That(score).IsEqualTo(1.0);
     }
 
     [Fact]
@@ -56,9 +56,9 @@ public class ExactObjectMatcherTests
 
         // Act
         var matcher = new ExactObjectMatcher(MatchBehaviour.RejectOnMatch, obj);
-        double result = matcher.IsMatch(new { x = 500, s = "s" });
+        var score = matcher.IsMatch(new { x = 500, s = "s" }).Score;
 
         // Assert
-        Check.That(result).IsEqualTo(0.0);
+        Check.That(score).IsEqualTo(0.0);
     }
 }

test/WireMock.Net.Tests/Matchers/GraphQLMatcherTests.cs

@@ -51,7 +51,7 @@ public class GraphQLMatcherTests
         var result = matcher.IsMatch(input);
 
         // Assert
-        result.Should().Be(MatchScores.Perfect);
+        result.Score.Should().Be(MatchScores.Perfect);
 
         matcher.GetPatterns().Should().Contain(TestSchema);
     }
@@ -71,7 +71,7 @@ public class GraphQLMatcherTests
         var result = matcher.IsMatch(input);
 
         // Assert
-        result.Should().Be(MatchScores.Perfect);
+        result.Score.Should().Be(MatchScores.Perfect);
 
         matcher.GetPatterns().Should().Contain(TestSchema);
     }
@@ -93,7 +93,7 @@ public class GraphQLMatcherTests
         var result = matcher.IsMatch(input);
 
         // Assert
-        result.Should().Be(MatchScores.Mismatch);
+        result.Score.Should().Be(MatchScores.Mismatch);
     }
 
     [Fact]
@@ -111,21 +111,22 @@ public class GraphQLMatcherTests
         var result = matcher.IsMatch(input);
 
         // Assert
-        result.Should().Be(MatchScores.Perfect);
+        result.Score.Should().Be(MatchScores.Perfect);
     }
 
     [Fact]
-    public void GraphQLMatcher_For_ValidSchema_And_IncorrectQueryWithError_WithThrowExceptionTrue_ThrowsException()
+    public void GraphQLMatcher_For_ValidSchema_And_IncorrectQueryWithError_WithThrowExceptionTrue_ReturnsError()
     {
         // Arrange
         var input = "{\"query\":\"{\\r\\n studentsX {\\r\\n fullName\\r\\n X\\r\\n }\\r\\n}\"}";
 
         // Act
-        var matcher = new GraphQLMatcher(TestSchema, MatchBehaviour.AcceptOnMatch, true);
+        var matcher = new GraphQLMatcher(TestSchema);
-        Action action = () => matcher.IsMatch(input);
+        var result = matcher.IsMatch(input);
 
         // Assert
-        action.Should().Throw<Exception>();
+        result.Score.Should().Be(MatchScores.Mismatch);
+        result.Exception!.Message.Should().StartWith("Cannot query field 'studentsX' on type 'Query'");
     }
 
     [Fact]

test/WireMock.Net.Tests/Matchers/JmesPathMatcherTests.cs

@@ -42,7 +42,7 @@ public class JmesPathMatcherTests
         var matcher = new JmesPathMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(bytes);
+        double match = matcher.IsMatch(bytes).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -56,7 +56,7 @@ public class JmesPathMatcherTests
         var matcher = new JmesPathMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(s);
+        double match = matcher.IsMatch(s).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -70,7 +70,7 @@ public class JmesPathMatcherTests
         var matcher = new JmesPathMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(o);
+        double match = matcher.IsMatch(o).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -83,7 +83,7 @@ public class JmesPathMatcherTests
         var matcher = new JmesPathMatcher("xxx");
 
         // Act 
-        double match = matcher.IsMatch("");
+        double match = matcher.IsMatch("").Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -96,7 +96,7 @@ public class JmesPathMatcherTests
         var matcher = new JmesPathMatcher("");
 
         // Act 
-        double match = matcher.IsMatch("x");
+        double match = matcher.IsMatch("x").Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -109,7 +109,7 @@ public class JmesPathMatcherTests
         var matcher = new JmesPathMatcher("things.name == 'RequiredThing'");
 
         // Act
-        double match = matcher.IsMatch(new { things = new { name = "RequiredThing" } });
+        double match = matcher.IsMatch(new { things = new { name = "RequiredThing" } }).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(1);
@@ -132,7 +132,7 @@ public class JmesPathMatcherTests
             { "Id", new JValue(1) },
             { "things", sub }
         };
-        double match = matcher.IsMatch(jobject);
+        double match = matcher.IsMatch(jobject).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(1);
@@ -145,7 +145,7 @@ public class JmesPathMatcherTests
         var matcher = new JmesPathMatcher("things.x == 'RequiredThing'");
 
         // Act 
-        double match = matcher.IsMatch(JObject.Parse("{ \"things\": { \"x\": \"RequiredThing\" } }"));
+        double match = matcher.IsMatch(JObject.Parse("{ \"things\": { \"x\": \"RequiredThing\" } }")).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(1);
@@ -155,10 +155,10 @@ public class JmesPathMatcherTests
     public void JmesPathMatcher_IsMatch_RejectOnMatch()
     {
         // Assign
-        var matcher = new JmesPathMatcher(MatchBehaviour.RejectOnMatch, false, MatchOperator.Or, "things.x == 'RequiredThing'");
+        var matcher = new JmesPathMatcher(MatchBehaviour.RejectOnMatch, MatchOperator.Or, "things.x == 'RequiredThing'");
 
         // Act
-        double match = matcher.IsMatch(JObject.Parse("{ \"things\": { \"x\": \"RequiredThing\" } }"));
+        double match = matcher.IsMatch(JObject.Parse("{ \"things\": { \"x\": \"RequiredThing\" } }")).Score;
 
         // Assert
         Check.That(match).IsEqualTo(0.0);

test/WireMock.Net.Tests/Matchers/JsonMatcherTests.cs

@@ -82,29 +82,17 @@ public class JsonMatcherTests
     }
 
     [Fact]
-    public void JsonMatcher_IsMatch_WithInvalidValue_And_ThrowExceptionIsFalse_Should_ReturnMismatch()
+    public void JsonMatcher_IsMatch_WithInvalidValue_Should_ReturnMismatch_And_Exception_ShouldBeSet()
     {
         // Assign
         var matcher = new JsonMatcher("");
 
         // Act
-        double match = matcher.IsMatch(new MemoryStream());
+        var result = matcher.IsMatch(new MemoryStream());
 
         // Assert 
-        Check.That(match).IsEqualTo(0);
+        result.Score.Should().Be(MatchScores.Mismatch);
-    }
+        result.Exception.Should().BeAssignableTo<JsonException>();
-
-    [Fact]
-    public void JsonMatcher_IsMatch_WithInvalidValue_And_ThrowExceptionIsTrue_Should_ReturnMismatch()
-    {
-        // Assign
-        var matcher = new JsonMatcher("", false, true);
-
-        // Act
-        Action action = () => matcher.IsMatch(new MemoryStream());
-
-        // Assert 
-        action.Should().Throw<JsonException>();
     }
 
     [Fact]
@@ -115,7 +103,7 @@ public class JsonMatcherTests
         var matcher = new JsonMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(bytes);
+        double match = matcher.IsMatch(bytes).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -129,7 +117,7 @@ public class JsonMatcherTests
         var matcher = new JsonMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(s);
+        double match = matcher.IsMatch(s).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -143,7 +131,7 @@ public class JsonMatcherTests
         var matcher = new JsonMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(o);
+        double match = matcher.IsMatch(o).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -161,7 +149,7 @@ public class JsonMatcherTests
             "x",
             "y"
         };
-        double match = matcher.IsMatch(jArray);
+        double match = matcher.IsMatch(jArray).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -179,7 +167,7 @@ public class JsonMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -197,7 +185,7 @@ public class JsonMatcherTests
             { "Id", new JValue(1) },
             { "NaMe", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -211,7 +199,7 @@ public class JsonMatcherTests
 
         // Act 
         var jObject = JObject.Parse("{ \"Id\" : 1, \"Name\" : \"Test\" }");
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -225,7 +213,7 @@ public class JsonMatcherTests
 
         // Act 
         var jObject = JObject.Parse("{ \"Id\" : 1, \"Name\" : \"Test\" }");
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -243,7 +231,7 @@ public class JsonMatcherTests
             "x",
             "y"
         };
-        double match = matcher.IsMatch(jArray);
+        double match = matcher.IsMatch(jArray).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -261,7 +249,7 @@ public class JsonMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -279,7 +267,7 @@ public class JsonMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -297,7 +285,7 @@ public class JsonMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(0.0, match);
@@ -314,7 +302,7 @@ public class JsonMatcherTests
         {
             { "preferredAt", new JValue("2019-11-21T10:32:53.2210009+00:00") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -331,7 +319,7 @@ public class JsonMatcherTests
         {
             { "NormalEnum", new JValue(0) }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         match.Should().Be(1.0);
@@ -348,7 +336,7 @@ public class JsonMatcherTests
         {
             { "EnumWithJsonConverter", new JValue("Type1") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         match.Should().Be(1.0);

test/WireMock.Net.Tests/Matchers/JsonPartialMatcherTests.cs

@@ -60,29 +60,17 @@ public class JsonPartialMatcherTests
     }
 
     [Fact]
-    public void JsonPartialMatcher_IsMatch_WithInvalidValue_And_ThrowExceptionIsFalse_Should_ReturnMismatch()
+    public void JsonPartialMatcher_IsMatch_WithInvalidValue_Should_ReturnMismatch_And_Exception_ShouldBeSet()
     {
         // Assign
         var matcher = new JsonPartialMatcher("");
 
         // Act
-        double match = matcher.IsMatch(new MemoryStream());
+        var result = matcher.IsMatch(new MemoryStream());
 
         // Assert 
-        Check.That(match).IsEqualTo(0);
+        result.Score.Should().Be(MatchScores.Mismatch);
-    }
+        result.Exception.Should().BeAssignableTo<JsonException>();
-
-    [Fact]
-    public void JsonPartialMatcher_IsMatch_WithInvalidValue_And_ThrowExceptionIsTrue_Should_ReturnMismatch()
-    {
-        // Assign
-        var matcher = new JsonPartialMatcher("", false, true);
-
-        // Act
-        Action action = () => matcher.IsMatch(new MemoryStream());
-
-        // Assert 
-        action.Should().Throw<JsonException>();
     }
 
     [Fact]
@@ -93,7 +81,7 @@ public class JsonPartialMatcherTests
         var matcher = new JsonPartialMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(bytes);
+        double match = matcher.IsMatch(bytes).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -107,7 +95,7 @@ public class JsonPartialMatcherTests
         var matcher = new JsonPartialMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(s);
+        double match = matcher.IsMatch(s).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -121,7 +109,7 @@ public class JsonPartialMatcherTests
         var matcher = new JsonPartialMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(o);
+        double match = matcher.IsMatch(o).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -139,7 +127,7 @@ public class JsonPartialMatcherTests
             "x",
             "y"
         };
-        double match = matcher.IsMatch(jArray);
+        double match = matcher.IsMatch(jArray).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -157,7 +145,7 @@ public class JsonPartialMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -167,7 +155,7 @@ public class JsonPartialMatcherTests
     public void JsonPartialMatcher_IsMatch_WithRegexTrue()
     {
         // Assign 
-        var matcher = new JsonPartialMatcher(new { Id = "^\\d+$", Name = "Test" }, false, false, true);
+        var matcher = new JsonPartialMatcher(new { Id = "^\\d+$", Name = "Test" }, false, true);
 
         // Act 
         var jObject = new JObject
@@ -175,7 +163,7 @@ public class JsonPartialMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -193,7 +181,7 @@ public class JsonPartialMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(0.0, match);
@@ -203,10 +191,11 @@ public class JsonPartialMatcherTests
     public void JsonPartialMatcher_IsMatch_GuidAsString_UsingRegex()
     {
         var guid = new Guid("1111238e-b775-44a9-a263-95e570135c94");
-        var matcher = new JsonPartialMatcher(new {
+        var matcher = new JsonPartialMatcher(new
+        {
             Id = 1,
             Name = "^1111[a-fA-F0-9]{4}(-[a-fA-F0-9]{4}){3}-[a-fA-F0-9]{12}$"
-        }, false, false, true);
+        }, false, true);
 
         // Act
         var jObject = new JObject
@@ -214,7 +203,7 @@ public class JsonPartialMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue(guid) }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert
         Assert.Equal(1.0, match);
@@ -232,7 +221,7 @@ public class JsonPartialMatcherTests
             { "Id", new JValue(1) },
             { "NaMe", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -246,7 +235,7 @@ public class JsonPartialMatcherTests
 
         // Act 
         var jObject = JObject.Parse("{ \"Id\" : 1, \"Name\" : \"Test\" }");
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -260,7 +249,7 @@ public class JsonPartialMatcherTests
 
         // Act 
         var jObject = JObject.Parse("{ \"Id\" : 1, \"Name\" : \"Test\" }");
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -278,7 +267,7 @@ public class JsonPartialMatcherTests
             "x",
             "y"
         };
-        double match = matcher.IsMatch(jArray);
+        double match = matcher.IsMatch(jArray).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -296,7 +285,7 @@ public class JsonPartialMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -305,20 +294,20 @@ public class JsonPartialMatcherTests
     [Fact]
     public void JsonPartialMatcher_IsMatch_GuidAsString()
     {
-    	// Assign
+        // Assign
-    	var guid = Guid.NewGuid();
+        var guid = Guid.NewGuid();
-    	var matcher = new JsonPartialMatcher(new { Id = 1, Name = guid });
+        var matcher = new JsonPartialMatcher(new { Id = 1, Name = guid });
 
-    	// Act
+        // Act
-    	var jObject = new JObject
+        var jObject = new JObject
-    	{
+        {
-    		{ "Id", new JValue(1) },
+            { "Id", new JValue(1) },
-    		{ "Name", new JValue(guid.ToString()) }
+            { "Name", new JValue(guid.ToString()) }
-    	};
+        };
-    	double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
-    	// Assert
+        // Assert
-    	Assert.Equal(1.0, match);
+        Assert.Equal(1.0, match);
     }
 
     [Fact]
@@ -333,7 +322,7 @@ public class JsonPartialMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -351,7 +340,7 @@ public class JsonPartialMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(0.0, match);
@@ -368,7 +357,7 @@ public class JsonPartialMatcherTests
         {
             { "preferredAt", new JValue("2019-11-21T10:32:53.2210009+00:00") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -391,7 +380,7 @@ public class JsonPartialMatcherTests
         var matcher = new JsonPartialMatcher(value);
 
         // Act
-        double match = matcher.IsMatch(input);
+        double match = matcher.IsMatch(input).Score;
 
         // Assert
         Assert.Equal(1.0, match);
@@ -415,7 +404,7 @@ public class JsonPartialMatcherTests
         var matcher = new JsonPartialMatcher(value);
 
         // Act
-        double match = matcher.IsMatch(input);
+        double match = matcher.IsMatch(input).Score;
 
         // Assert
         Assert.Equal(0.0, match);
@@ -434,7 +423,7 @@ public class JsonPartialMatcherTests
         var matcher = new JsonPartialMatcher(value);
 
         // Act
-        double match = matcher.IsMatch(input);
+        double match = matcher.IsMatch(input).Score;
 
         // Assert
         Assert.Equal(1.0, match);
@@ -453,7 +442,7 @@ public class JsonPartialMatcherTests
         var matcher = new JsonPartialMatcher(value);
 
         // Act
-        double match = matcher.IsMatch(input);
+        double match = matcher.IsMatch(input).Score;
 
         // Assert
         Assert.Equal(0.0, match);

test/WireMock.Net.Tests/Matchers/JsonPartialWildcardMatcherTests.cs

@@ -60,29 +60,17 @@ public class JsonPartialWildcardMatcherTests
     }
 
     [Fact]
-    public void JsonPartialWildcardMatcher_IsMatch_WithInvalidValue_And_ThrowExceptionIsFalse_Should_ReturnMismatch()
+    public void JsonPartialWildcardMatcher_IsMatch_WithInvalidValue_Should_ReturnMismatch_And_Exception_ShouldBeSet()
     {
         // Assign
         var matcher = new JsonPartialWildcardMatcher("");
 
         // Act
-        double match = matcher.IsMatch(new MemoryStream());
+        var result = matcher.IsMatch(new MemoryStream());
 
         // Assert 
-        Check.That(match).IsEqualTo(0);
+        result.Score.Should().Be(MatchScores.Mismatch);
-    }
+        result.Exception.Should().BeAssignableTo<JsonException>();
-
-    [Fact]
-    public void JsonPartialWildcardMatcher_IsMatch_WithInvalidValue_And_ThrowExceptionIsTrue_Should_ReturnMismatch()
-    {
-        // Assign
-        var matcher = new JsonPartialWildcardMatcher("", false, true);
-
-        // Act
-        Action action = () => matcher.IsMatch(new MemoryStream());
-
-        // Assert 
-        action.Should().Throw<JsonException>();
     }
 
     [Fact]
@@ -93,7 +81,7 @@ public class JsonPartialWildcardMatcherTests
         var matcher = new JsonPartialWildcardMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(bytes);
+        double match = matcher.IsMatch(bytes).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -107,7 +95,7 @@ public class JsonPartialWildcardMatcherTests
         var matcher = new JsonPartialWildcardMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(s);
+        double match = matcher.IsMatch(s).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -121,7 +109,7 @@ public class JsonPartialWildcardMatcherTests
         var matcher = new JsonPartialWildcardMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(o);
+        double match = matcher.IsMatch(o).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -139,7 +127,7 @@ public class JsonPartialWildcardMatcherTests
             "x",
             "y"
         };
-        double match = matcher.IsMatch(jArray);
+        double match = matcher.IsMatch(jArray).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -157,7 +145,7 @@ public class JsonPartialWildcardMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -175,7 +163,7 @@ public class JsonPartialWildcardMatcherTests
             { "Id", new JValue(1) },
             { "NaMe", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -189,7 +177,7 @@ public class JsonPartialWildcardMatcherTests
 
         // Act 
         var jObject = JObject.Parse("{ \"Id\" : 1, \"Name\" : \"Test\" }");
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -203,7 +191,7 @@ public class JsonPartialWildcardMatcherTests
 
         // Act 
         var jObject = JObject.Parse("{ \"Id\" : 1, \"Name\" : \"Test\" }");
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -221,7 +209,7 @@ public class JsonPartialWildcardMatcherTests
             "x",
             "y"
         };
-        double match = matcher.IsMatch(jArray);
+        double match = matcher.IsMatch(jArray).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -239,7 +227,7 @@ public class JsonPartialWildcardMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -257,7 +245,7 @@ public class JsonPartialWildcardMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -275,7 +263,7 @@ public class JsonPartialWildcardMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(0.0, match);
@@ -292,7 +280,7 @@ public class JsonPartialWildcardMatcherTests
         {
             { "preferredAt", new JValue("2019-11-21T10:32:53.2210009+00:00") }
         };
-        double match = matcher.IsMatch(jObject);
+        double match = matcher.IsMatch(jObject).Score;
 
         // Assert 
         Assert.Equal(1.0, match);
@@ -315,7 +303,7 @@ public class JsonPartialWildcardMatcherTests
         var matcher = new JsonPartialWildcardMatcher(value);
 
         // Act
-        double match = matcher.IsMatch(input);
+        double match = matcher.IsMatch(input).Score;
 
         // Assert
         Assert.Equal(1.0, match);
@@ -330,7 +318,7 @@ public class JsonPartialWildcardMatcherTests
         var matcher = new JsonPartialWildcardMatcher(value);
 
         // Act
-        double match = matcher.IsMatch(input);
+        double match = matcher.IsMatch(input).Score;
 
         // Assert
         match.Should().Be(1.0);
@@ -354,7 +342,7 @@ public class JsonPartialWildcardMatcherTests
         var matcher = new JsonPartialWildcardMatcher(value);
 
         // Act
-        double match = matcher.IsMatch(input);
+        double match = matcher.IsMatch(input).Score;
 
         // Assert
         Assert.Equal(0.0, match);
@@ -373,7 +361,7 @@ public class JsonPartialWildcardMatcherTests
         var matcher = new JsonPartialWildcardMatcher(value);
 
         // Act
-        double match = matcher.IsMatch(input);
+        double match = matcher.IsMatch(input).Score;
 
         // Assert
         Assert.Equal(1.0, match);
@@ -392,7 +380,7 @@ public class JsonPartialWildcardMatcherTests
         var matcher = new JsonPartialWildcardMatcher(value);
 
         // Act
-        double match = matcher.IsMatch(input);
+        double match = matcher.IsMatch(input).Score;
 
         // Assert
         Assert.Equal(0.0, match);

test/WireMock.Net.Tests/Matchers/JsonPathMatcherTests.cs

@@ -42,7 +42,7 @@ public class JsonPathMatcherTests
         var matcher = new JsonPathMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(bytes);
+        double match = matcher.IsMatch(bytes).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -56,7 +56,7 @@ public class JsonPathMatcherTests
         var matcher = new JsonPathMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(s);
+        double match = matcher.IsMatch(s).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -70,7 +70,7 @@ public class JsonPathMatcherTests
         var matcher = new JsonPathMatcher("");
 
         // Act 
-        double match = matcher.IsMatch(o);
+        double match = matcher.IsMatch(o).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -83,7 +83,7 @@ public class JsonPathMatcherTests
         var matcher = new JsonPathMatcher("xxx");
 
         // Act 
-        double match = matcher.IsMatch("");
+        double match = matcher.IsMatch("").Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -96,7 +96,7 @@ public class JsonPathMatcherTests
         var matcher = new JsonPathMatcher("");
 
         // Act 
-        double match = matcher.IsMatch("x");
+        double match = matcher.IsMatch("x").Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -109,7 +109,7 @@ public class JsonPathMatcherTests
         var matcher = new JsonPathMatcher("$..[?(@.Id == 1)]");
 
         // Act 
-        double match = matcher.IsMatch(new { Id = 1, Name = "Test" });
+        double match = matcher.IsMatch(new { Id = 1, Name = "Test" }).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(1);
@@ -122,7 +122,7 @@ public class JsonPathMatcherTests
         var matcher = new JsonPathMatcher("$.things[?(@.name == 'x')]");
 
         // Act 
-        double match = matcher.IsMatch(new { things = new { name = "x" } });
+        double match = matcher.IsMatch(new { things = new { name = "x" } }).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(1);
@@ -136,7 +136,7 @@ public class JsonPathMatcherTests
         var matcher = new JsonPathMatcher("$.things[?(@.name == 'x')]");
 
         // Act 
-        double match = matcher.IsMatch(json);
+        double match = matcher.IsMatch(json).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(1);
@@ -150,7 +150,7 @@ public class JsonPathMatcherTests
         var matcher = new JsonPathMatcher("$.things[?(@.name == 'x')]");
 
         // Act 
-        double match = matcher.IsMatch(json);
+        double match = matcher.IsMatch(json).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0);
@@ -169,7 +169,7 @@ public class JsonPathMatcherTests
             { "Id", new JValue(1) },
             { "Name", new JValue("Test") }
         };
-        double match = matcher.IsMatch(jobject);
+        double match = matcher.IsMatch(jobject).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(1);
@@ -182,7 +182,7 @@ public class JsonPathMatcherTests
         var matcher = new JsonPathMatcher("$..[?(@.Id == 1)]");
 
         // Act 
-        double match = matcher.IsMatch(JObject.Parse("{\"Id\":1,\"Name\":\"Test\"}"));
+        double match = matcher.IsMatch(JObject.Parse("{\"Id\":1,\"Name\":\"Test\"}")).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(1);
@@ -192,10 +192,10 @@ public class JsonPathMatcherTests
     public void JsonPathMatcher_IsMatch_RejectOnMatch()
     {
         // Arrange
-        var matcher = new JsonPathMatcher(MatchBehaviour.RejectOnMatch, false, MatchOperator.Or, "$..[?(@.Id == 1)]");
+        var matcher = new JsonPathMatcher(MatchBehaviour.RejectOnMatch, MatchOperator.Or, "$..[?(@.Id == 1)]");
 
         // Act
-        double match = matcher.IsMatch(JObject.Parse("{\"Id\":1,\"Name\":\"Test\"}"));
+        double match = matcher.IsMatch(JObject.Parse("{\"Id\":1,\"Name\":\"Test\"}")).Score;
 
         // Assert
         Check.That(match).IsEqualTo(0.0);
@@ -215,7 +215,7 @@ public class JsonPathMatcherTests
             ""arr"": [{
                 ""line1"": ""line1"",
             }]
-        }"));
+        }")).Score;
 
         // Assert
         Check.That(match).IsEqualTo(1.0);
@@ -237,10 +237,10 @@ public class JsonPathMatcherTests
                     ""line1"": ""line1"",
                 }
             ]
-        }"));
+        }")).Score;
 
         // Assert 
-         Check.That(match).IsEqualTo(1.0); 
+        Check.That(match).IsEqualTo(1.0);
     }
 
     [Fact]
@@ -259,7 +259,7 @@ public class JsonPathMatcherTests
                     ""line1"": ""line1"",
                 }
             ]
-        }"));
+        }")).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0.0);
@@ -277,7 +277,7 @@ public class JsonPathMatcherTests
             ""test"": ""test"",
             ""test2"": ""test2"",
             ""arr"": []
-        }"));
+        }")).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0.0);
@@ -295,7 +295,7 @@ public class JsonPathMatcherTests
             ""test"": ""test"",
             ""test2"": ""test2"",
             ""arr"": []
-        }"));
+        }")).Score;
 
         // Assert 
         Check.That(match).IsEqualTo(0.0);
@@ -319,9 +319,9 @@ public class JsonPathMatcherTests
                     ""subline1"":""subline1""
                 }]
             }]
-        }"));
+        }")).Score;
 
         // Assert 
-      Check.That(match).IsEqualTo(1.0); 
+        Check.That(match).IsEqualTo(1.0);
     }
 }

test/WireMock.Net.Tests/Matchers/LinqMatcherTests.cs

@@ -1,3 +1,4 @@
+using FluentAssertions;
 using Newtonsoft.Json.Linq;
 using NFluent;
 using WireMock.Matchers;
@@ -17,7 +18,8 @@ public class LinqMatcherTests
         var matcher = new LinqMatcher("DateTime.Parse(it) > \"2018-08-01 13:50:00\"");
 
         // Assert
-        Check.That(matcher.IsMatch(input)).IsEqualTo(1.0d);
+        var score = matcher.IsMatch(input).Score;
+        score.Should().Be(MatchScores.Perfect);
     }
 
     [Fact]
@@ -30,7 +32,8 @@ public class LinqMatcherTests
         var matcher = new LinqMatcher("DateTime.Parse(it) > \"2019-01-01 00:00:00\"");
 
         // Assert
-        Check.That(matcher.IsMatch(input)).IsEqualTo(0.0d);
+        var score = matcher.IsMatch(input).Score;
+        score.Should().Be(MatchScores.Mismatch);
     }
 
     [Fact]
@@ -43,7 +46,8 @@ public class LinqMatcherTests
         var matcher = new LinqMatcher(MatchBehaviour.RejectOnMatch, "DateTime.Parse(it) > \"2018-08-01 13:50:00\"");
 
         // Assert
-        Check.That(matcher.IsMatch(input)).IsEqualTo(0.0d);
+        var score = matcher.IsMatch(input).Score;
+        score.Should().Be(MatchScores.Mismatch);
     }
 
     [Fact]
@@ -58,7 +62,7 @@ public class LinqMatcherTests
 
         // Act
         var matcher = new LinqMatcher("Id > 1 AND Name == \"Test\"");
-        double match = matcher.IsMatch(input);
+        double match = matcher.IsMatch(input).Score;
 
         // Assert
         Assert.Equal(1.0, match);
@@ -77,7 +81,7 @@ public class LinqMatcherTests
 
         // Act
         var matcher = new LinqMatcher("IntegerId > 1 AND LongId > 1 && Name == \"Test\"");
-        double match = matcher.IsMatch(input);
+        double match = matcher.IsMatch(input).Score;
 
         // Assert
         Assert.Equal(1.0, match);

test/WireMock.Net.Tests/Matchers/MimePartMatcherTests.cs

@@ -55,7 +55,7 @@ AAAADElEQVR4XmMQYNgAAADkAMHebX3mAAAAAElFTkSuQmCC
 
         // Assert
         matcher.Name.Should().Be("MimePartMatcher");
-        result.Should().Be(MatchScores.Perfect);
+        result.Score.Should().Be(MatchScores.Perfect);
     }
 
     [Fact]
@@ -73,7 +73,7 @@ AAAADElEQVR4XmMQYNgAAADkAMHebX3mAAAAAElFTkSuQmCC
         var result = matcher.IsMatch(part);
 
         // Assert
-        result.Should().Be(MatchScores.Perfect);
+        result.Score.Should().Be(MatchScores.Perfect);
     }
 
     [Fact]
@@ -93,7 +93,7 @@ AAAADElEQVR4XmMQYNgAAADkAMHebX3mAAAAAElFTkSuQmCC
         var result = matcher.IsMatch(part);
 
         // Assert
-        result.Should().Be(MatchScores.Perfect);
+        result.Score.Should().Be(MatchScores.Perfect);
     }
 }
 #endif

test/WireMock.Net.Tests/Matchers/NotNullOrEmptyMatcherTests.cs

@@ -12,7 +12,7 @@ public class NotNullOrEmptyMatcherTests
     {
         // Act
         var matcher = new NotNullOrEmptyMatcher();
-        string name = matcher.Name;
+        var name = matcher.Name;
 
         // Assert
         Check.That(name).Equals("NotNullOrEmptyMatcher");
@@ -26,7 +26,7 @@ public class NotNullOrEmptyMatcherTests
     {
         // Act
         var matcher = new NotNullOrEmptyMatcher();
-        double result = matcher.IsMatch(data);
+        var result = matcher.IsMatch(data).Score;
 
         // Assert
         result.Should().Be(expected);
@@ -40,7 +40,7 @@ public class NotNullOrEmptyMatcherTests
     {
         // Act
         var matcher = new NotNullOrEmptyMatcher();
-        double result = matcher.IsMatch(@string);
+        var result = matcher.IsMatch(@string).Score;
 
         // Assert
         result.Should().Be(expected);
@@ -54,7 +54,7 @@ public class NotNullOrEmptyMatcherTests
     {
         // Act
         var matcher = new NotNullOrEmptyMatcher();
-        double result = matcher.IsMatch((object)@string);
+        var result = matcher.IsMatch((object)@string).Score;
 
         // Assert
         result.Should().Be(expected);
@@ -65,7 +65,7 @@ public class NotNullOrEmptyMatcherTests
     {
         // Act
         var matcher = new NotNullOrEmptyMatcher();
-        double result = matcher.IsMatch(new { x = "x" });
+        var result = matcher.IsMatch(new { x = "x" }).Score;
 
         // Assert
         result.Should().Be(1.0);

test/WireMock.Net.Tests/Matchers/RegexMatcherTests.cs

@@ -53,7 +53,7 @@ public class RegexMatcherTests
         var matcher = new RegexMatcher("H.*o");
 
         // Act
-        double result = matcher.IsMatch("Hello world!");
+        double result = matcher.IsMatch("Hello world!").Score;
 
         // Assert
         Check.That(result).IsEqualTo(1.0d);
@@ -66,7 +66,7 @@ public class RegexMatcherTests
         var matcher = new RegexMatcher("H.*o");
 
         // Act
-        double result = matcher.IsMatch(null);
+        double result = matcher.IsMatch(null).Score;
 
         // Assert
         Check.That(result).IsEqualTo(0.0d);
@@ -79,7 +79,7 @@ public class RegexMatcherTests
         var matcher = new RegexMatcher(@"\GUIDB", true);
 
         // Act
-        double result = matcher.IsMatch(Guid.NewGuid().ToString("B"));
+        double result = matcher.IsMatch(Guid.NewGuid().ToString("B")).Score;
 
         // Assert
         result.Should().Be(1.0);
@@ -89,10 +89,10 @@ public class RegexMatcherTests
     public void RegexMatcher_IsMatch_Regex_Guid()
     {
         // Assign
-        var matcher = new RegexMatcher(@"\GUIDB", true, false, false);
+        var matcher = new RegexMatcher(@"\GUIDB", true, false);
 
         // Act
-        double result = matcher.IsMatch(Guid.NewGuid().ToString("B"));
+        double result = matcher.IsMatch(Guid.NewGuid().ToString("B")).Score;
 
         // Assert
         result.Should().Be(0);
@@ -105,7 +105,7 @@ public class RegexMatcherTests
         var matcher = new RegexMatcher("H.*o", true);
 
         // Act
-        double result = matcher.IsMatch("hello");
+        double result = matcher.IsMatch("hello").Score;
 
         // Assert
         Check.That(result).IsEqualTo(1.0d);
@@ -118,7 +118,7 @@ public class RegexMatcherTests
         var matcher = new RegexMatcher(MatchBehaviour.RejectOnMatch, "h.*o");
 
         // Act
-        double result = matcher.IsMatch("hello");
+        double result = matcher.IsMatch("hello").Score;
 
         // Assert
         Check.That(result).IsEqualTo(0.0);

test/WireMock.Net.Tests/Matchers/RequestMatchResultTests.cs

@@ -13,12 +13,12 @@ public class RequestMatchResultTests
     {
         // Arrange
         var result1 = new RequestMatchResult();
-        result1.AddScore(typeof(WildcardMatcher), 1);
+        result1.AddScore(typeof(WildcardMatcher), 1, null);
-        result1.AddScore(typeof(WildcardMatcher), 0.9);
+        result1.AddScore(typeof(WildcardMatcher), 0.9, null);
 
         var result2 = new RequestMatchResult();
-        result2.AddScore(typeof(LinqMatcher), 1);
+        result2.AddScore(typeof(LinqMatcher), 1, null);
-        result2.AddScore(typeof(LinqMatcher), 1);
+        result2.AddScore(typeof(LinqMatcher), 1, null);
 
         var results = new[] { result1, result2 };
 
@@ -34,13 +34,13 @@ public class RequestMatchResultTests
     {
         // Arrange
         var result1 = new RequestMatchResult();
-        result1.AddScore(typeof(WildcardMatcher), 1);
+        result1.AddScore(typeof(WildcardMatcher), 1, null);
-        result1.AddScore(typeof(WildcardMatcher), 1);
+        result1.AddScore(typeof(WildcardMatcher), 1, null);
 
         var result2 = new RequestMatchResult();
-        result2.AddScore(typeof(LinqMatcher), 1);
+        result2.AddScore(typeof(LinqMatcher), 1, null);
-        result2.AddScore(typeof(LinqMatcher), 1);
+        result2.AddScore(typeof(LinqMatcher), 1, null);
-        result2.AddScore(typeof(LinqMatcher), 1);
+        result2.AddScore(typeof(LinqMatcher), 1, null);
 
         var results = new[] { result1, result2 };
 

test/WireMock.Net.Tests/Matchers/SimMetricsMatcherTests.cs

@@ -39,7 +39,7 @@ public class SimMetricsMatcherTests
         var matcher = new SimMetricsMatcher("The cat walks in the street.");
 
         // Act
-        double result = matcher.IsMatch("The car drives in the street.");
+        double result = matcher.IsMatch("The car drives in the street.").Score;
 
         // Assert
         Check.That(result).IsStrictlyLessThan(1.0).And.IsStrictlyGreaterThan(0.5);
@@ -52,7 +52,7 @@ public class SimMetricsMatcherTests
         var matcher = new SimMetricsMatcher("The cat walks in the street.");
 
         // Act
-        double result = matcher.IsMatch("Hello");
+        double result = matcher.IsMatch("Hello").Score;
 
         // Assert
         Check.That(result).IsStrictlyLessThan(0.1).And.IsStrictlyGreaterThan(0.05);
@@ -65,7 +65,7 @@ public class SimMetricsMatcherTests
         var matcher = new SimMetricsMatcher("test");
 
         // Act
-        double result = matcher.IsMatch("test");
+        double result = matcher.IsMatch("test").Score;
 
         // Assert
         Check.That(result).IsEqualTo(1.0);
@@ -78,7 +78,7 @@ public class SimMetricsMatcherTests
         var matcher = new SimMetricsMatcher(MatchBehaviour.RejectOnMatch, "test");
 
         // Act
-        double result = matcher.IsMatch("test");
+        double result = matcher.IsMatch("test").Score;
 
         // Assert
         Check.That(result).IsEqualTo(0.0);

test/WireMock.Net.Tests/Matchers/WildcardMatcherTest.cs

@@ -19,11 +19,13 @@ public class WildcardMatcherTest
             PatternAsFile = "pf"
         };
 
-        // Act
         var matcher = new WildcardMatcher(pattern);
 
+        // Act
+        var score = matcher.IsMatch("a").Score;
+
         // Assert
-        matcher.IsMatch("a").Should().Be(1.0d);
+        score.Should().Be(1.0d);
     }
 
     [Fact]
@@ -39,11 +41,13 @@ public class WildcardMatcherTest
             Pattern = "b"
         };
 
-        // Act
         var matcher = new WildcardMatcher(new [] { pattern1, pattern2 });
 
+        // Act
+        var score = matcher.IsMatch("a").Score;
+
         // Assert
-        matcher.IsMatch("a").Should().Be(1.0d);
+        score.Should().Be(1.0d);
     }
 
     [Fact]
@@ -69,7 +73,12 @@ public class WildcardMatcherTest
         foreach (var test in tests)
         {
             var matcher = new WildcardMatcher(test.p);
-            matcher.IsMatch(test.i).Should().Be(1.0d, $"Pattern '{test.p}' with value '{test.i}' should be 1.0");
+
+            // Act
+            var score = matcher.IsMatch(test.i).Score;
+
+            // Assert
+            score.Should().Be(MatchScores.Perfect, $"Pattern '{test.p}' with value '{test.i}' should be 1.0");
         }
     }
 
@@ -94,7 +103,12 @@ public class WildcardMatcherTest
         foreach (var test in tests)
         {
             var matcher = new WildcardMatcher(test.p);
-            Check.That(matcher.IsMatch(test.i)).IsEqualTo(0.0);
+
+            // Act
+            var score = matcher.IsMatch(test.i).Score;
+
+            // Assert
+            score.Should().Be(MatchScores.Mismatch);
         }
     }
 
@@ -105,7 +119,7 @@ public class WildcardMatcherTest
         var matcher = new WildcardMatcher("x");
 
         // Act
-        string name = matcher.Name;
+        var name = matcher.Name;
 
         // Assert
         Check.That(name).Equals("WildcardMatcher");
@@ -131,7 +145,7 @@ public class WildcardMatcherTest
         var matcher = new WildcardMatcher(MatchBehaviour.RejectOnMatch, "m");
 
         // Act
-        double result = matcher.IsMatch("m");
+        var result = matcher.IsMatch("m").Score;
 
         Check.That(result).IsEqualTo(0.0);
     }

test/WireMock.Net.Tests/Matchers/XPathMatcherTests.cs

@@ -43,7 +43,7 @@ public class XPathMatcherTests
         var matcher = new XPathMatcher("/todo-list[count(todo-item) = 1]");
 
         // Act
-        double result = matcher.IsMatch(xml);
+        double result = matcher.IsMatch(xml).Score;
 
         // Assert
         Check.That(result).IsEqualTo(1.0);
@@ -57,10 +57,10 @@ public class XPathMatcherTests
                     <todo-list>
                         <todo-item id='a1'>abc</todo-item>
                     </todo-list>";
-        var matcher = new XPathMatcher(MatchBehaviour.RejectOnMatch, false, MatchOperator.Or, "/todo-list[count(todo-item) = 1]");
+        var matcher = new XPathMatcher(MatchBehaviour.RejectOnMatch, MatchOperator.Or, "/todo-list[count(todo-item) = 1]");
 
         // Act
-        double result = matcher.IsMatch(xml);
+        double result = matcher.IsMatch(xml).Score;
 
         // Assert
         Check.That(result).IsEqualTo(0.0);

test/WireMock.Net.Tests/Owin/Mappers/OwinResponseMapperTests.cs

@@ -1,9 +1,11 @@
+using System;
 using System.Collections.Generic;
 using System.IO;
 using Xunit;
 using Moq;
 using System.Threading.Tasks;
 using System.Threading;
+using FluentAssertions;
 using WireMock.Handlers;
 using WireMock.Owin.Mappers;
 using WireMock.ResponseBuilders;
@@ -235,6 +237,24 @@ namespace WireMock.Net.Tests.Owin.Mappers
 #endif
         }
 
+        [Fact]
+        public void OwinResponseMapper_MapAsync_BodyAsFile_ThrowsException()
+        {
+            // Arrange
+            var responseMessage = new ResponseMessage
+            {
+                Headers = new Dictionary<string, WireMockList<string>>(),
+                BodyData = new BodyData { DetectedBodyType = BodyType.File, BodyAsFile = string.Empty }
+            };
+            _fileSystemHandlerMock.Setup(f => f.ReadResponseBodyAsFile(It.IsAny<string>())).Throws<FileNotFoundException>();
+
+            // Act
+            Func<Task> action = () => _sut.MapAsync(responseMessage, _responseMock.Object);
+
+            // Assert
+            action.Should().ThrowAsync<FileNotFoundException>();
+        }
+
         [Fact]
         public async Task OwinResponseMapper_MapAsync_WithFault_EMPTY_RESPONSE()
         {
@@ -251,7 +271,7 @@ namespace WireMock.Net.Tests.Owin.Mappers
             await _sut.MapAsync(responseMessage, _responseMock.Object).ConfigureAwait(false);
 
             // Assert
-            _stream.Verify(s => s.WriteAsync(new byte[0], 0, 0, It.IsAny<CancellationToken>()), Times.Once);
+            _stream.Verify(s => s.WriteAsync(EmptyArray<byte>.Value, 0, 0, It.IsAny<CancellationToken>()), Times.Once);
         }
 
         [Theory]

test/WireMock.Net.Tests/Owin/MappingMatcherTests.cs

@@ -220,7 +220,7 @@ public class MappingMatcherTests
             var requestMatchResult = new RequestMatchResult();
             foreach (var score in match.scores)
             {
-                requestMatchResult.AddScore(typeof(object), score);
+                requestMatchResult.AddScore(typeof(object), score, null);
             }
 
             mappingMock.SetupGet(m => m.Probability).Returns(match.probability);

test/WireMock.Net.Tests/Serialization/CustomPathParamMatcher.cs

@@ -15,8 +15,8 @@ namespace WireMock.Net.Tests.Serialization;
 public class CustomPathParamMatcher : IStringMatcher
 {
     public string Name => nameof(CustomPathParamMatcher);
+
     public MatchBehaviour MatchBehaviour { get; }
-    public bool ThrowException { get; }
 
     private readonly string _path;
     private readonly string[] _pathParts;
@@ -30,18 +30,16 @@ public class CustomPathParamMatcher : IStringMatcher
         MatchBehaviour matchBehaviour,
         string path,
         Dictionary<string, string> pathParams,
-        bool throwException = false,
         MatchOperator matchOperator = MatchOperator.Or)
     {
         MatchBehaviour = matchBehaviour;
-        ThrowException = throwException;
         _path = path;
         _pathParts = GetPathParts(path);
         _pathParams = pathParams.ToDictionary(x => x.Key, x => x.Value, StringComparer.OrdinalIgnoreCase);
         MatchOperator = matchOperator;
     }
 
-    public double IsMatch(string? input)
+    public MatchResult IsMatch(string? input)
     {
         var inputParts = GetPathParts(input);
         if (inputParts.Length != _pathParts.Length)
@@ -79,11 +77,6 @@ public class CustomPathParamMatcher : IStringMatcher
         }
         catch
         {
-            if (ThrowException)
-            {
-                throw;
-            }
-
             return MatchScores.Mismatch;
         }
 

test/WireMock.Net.Tests/Serialization/MatcherModelMapperTests.cs

@@ -43,14 +43,14 @@ public class MatcherModelMapperTests
 
         // Assert 1
         matcher1.Should().NotBeNull();
-        matcher1.IsMatch("x").Should().Be(1.0d);
+        matcher1.IsMatch("x").Score.Should().Be(1.0d);
 
         // Act 2
         var matcher2 = (ICSharpCodeMatcher)sut.Map(model)!;
 
         // Assert 2
         matcher2.Should().NotBeNull();
-        matcher2.IsMatch("x").Should().Be(1.0d);
+        matcher2.IsMatch("x").Score.Should().Be(1.0d);
     }
 
     [Fact]
@@ -96,7 +96,6 @@ public class MatcherModelMapperTests
 
         // Assert
         matcher.GetPatterns().Should().ContainSingle("x");
-        matcher.ThrowException.Should().BeFalse();
     }
 
     [Fact]
@@ -136,7 +135,6 @@ public class MatcherModelMapperTests
         matcher.IgnoreCase.Should().BeFalse();
         matcher.Value.Should().Be(pattern);
         matcher.Regex.Should().BeFalse();
-        matcher.ThrowException.Should().BeFalse();
     }
 
     [Fact]
@@ -159,43 +157,6 @@ public class MatcherModelMapperTests
         matcher.IgnoreCase.Should().BeFalse();
         matcher.Value.Should().Be(pattern);
         matcher.Regex.Should().BeTrue();
-        matcher.ThrowException.Should().BeFalse();
-    }
-
-    [Theory]
-    [InlineData(nameof(LinqMatcher))]
-    [InlineData(nameof(ExactMatcher))]
-    [InlineData(nameof(ExactObjectMatcher))]
-    [InlineData(nameof(RegexMatcher))]
-    [InlineData(nameof(JsonMatcher))]
-    [InlineData(nameof(JsonPartialMatcher))]
-    [InlineData(nameof(JsonPartialWildcardMatcher))]
-    [InlineData(nameof(JsonPathMatcher))]
-    [InlineData(nameof(JmesPathMatcher))]
-    [InlineData(nameof(XPathMatcher))]
-    [InlineData(nameof(WildcardMatcher))]
-    [InlineData(nameof(ContentTypeMatcher))]
-    [InlineData(nameof(SimMetricsMatcher))]
-    public void MatcherModelMapper_Map_ThrowExceptionWhenMatcherFails_True(string name)
-    {
-        // Assign
-        var settings = new WireMockServerSettings
-        {
-            ThrowExceptionWhenMatcherFails = true
-        };
-        var sut = new MatcherMapper(settings);
-        var model = new MatcherModel
-        {
-            Name = name,
-            Patterns = new[] { "" }
-        };
-
-        // Act
-        var matcher = sut.Map(model)!;
-
-        // Assert
-        matcher.Should().NotBeNull();
-        matcher.ThrowException.Should().BeTrue();
     }
 
     [Fact]
@@ -249,7 +210,9 @@ public class MatcherModelMapperTests
 
         // Assert
         Check.That(matcher.GetPatterns()).ContainsExactly("x", "y");
-        Check.That(matcher.IsMatch("X")).IsEqualTo(expected);
+
+        var result = matcher.IsMatch("X");
+        result.Score.Should().Be(expected);
     }
 
     [Theory]
@@ -272,7 +235,9 @@ public class MatcherModelMapperTests
 
         // Assert
         Check.That(matcher.GetPatterns()).ContainsExactly("x", "y");
-        Check.That(matcher.IsMatch("X")).IsEqualTo(expected);
+
+        var result = matcher.IsMatch("X");
+        result.Score.Should().Be(expected);
     }
 
     [Fact]
@@ -306,7 +271,9 @@ public class MatcherModelMapperTests
 
         // Assert
         matcher.GetPatterns().Should().HaveCount(1).And.Contain(new AnyOf<string, StringPattern>(stringPattern));
-        matcher.IsMatch("c").Should().Be(1.0d);
+
+        var result = matcher.IsMatch("c");
+        result.Score.Should().Be(MatchScores.Perfect);
     }
 
     [Fact]
@@ -395,8 +362,7 @@ public class MatcherModelMapperTests
             return new CustomPathParamMatcher(
                 matcherModel.RejectOnMatch == true ? MatchBehaviour.RejectOnMatch : MatchBehaviour.AcceptOnMatch,
                 matcherParams.Path,
-                matcherParams.PathParams,
+                matcherParams.PathParams
-                settings.ThrowExceptionWhenMatcherFails == true
             );
         };
         var sut = new MatcherMapper(settings);

test/WireMock.Net.Tests/WireMockAdminApiTests.IWireMockAdminApi_GetMappingsCode.verified.txt

@@ -77,7 +77,6 @@ server
         .WithBody(new JsonPartialMatcher(
                                             value: "{ a = 1, b = 2 }",
                                             ignoreCase: false,
-                                            throwException: false,
                                             regex: false
                                          ))
     )

test/WireMock.Net.Tests/WireMockServerTests.cs

@@ -138,25 +138,25 @@ public partial class WireMockServerTests
 
 #if NETCOREAPP3_1 || NET5_0 || NET6_0 || NET7_0
     [Fact]
-public async Task WireMockServer_WithCorsPolicyOptions_Should_Work_Correct()
+    public async Task WireMockServer_WithCorsPolicyOptions_Should_Work_Correct()
-{
-    // Arrange
-    var settings = new WireMockServerSettings
     {
-        CorsPolicyOptions = CorsPolicyOptions.AllowAll
+        // Arrange
-    };
+        var settings = new WireMockServerSettings
-    var server = WireMockServer.Start(settings);
+        {
+            CorsPolicyOptions = CorsPolicyOptions.AllowAll
+        };
+        var server = WireMockServer.Start(settings);
 
-    server.Given(Request.Create().WithPath("/*")).RespondWith(Response.Create().WithBody("x"));
+        server.Given(Request.Create().WithPath("/*")).RespondWith(Response.Create().WithBody("x"));
 
-    // Act
+        // Act
-    var response = await new HttpClient().GetStringAsync("http://localhost:" + server.Ports[0] + "/foo").ConfigureAwait(false);
+        var response = await new HttpClient().GetStringAsync("http://localhost:" + server.Ports[0] + "/foo").ConfigureAwait(false);
 
-    // Asser.
+        // Asser.
-    response.Should().Be("x");
+        response.Should().Be("x");
 
-    server.Stop();
+        server.Stop();
-}
+    }
 #endif
 
     [Fact]
@@ -277,34 +277,34 @@ public async Task WireMockServer_WithCorsPolicyOptions_Should_Work_Correct()
     }
 
 #if !NET452 && !NET461
-[Theory]
+    [Theory]
-[InlineData("TRACE")]
+    [InlineData("TRACE")]
-[InlineData("GET")]
+    [InlineData("GET")]
-public async Task WireMockServer_Should_exclude_body_for_methods_where_body_is_definitely_disallowed(string method)
+    public async Task WireMockServer_Should_exclude_body_for_methods_where_body_is_definitely_disallowed(string method)
-{
+    {
-    // Assign
+        // Assign
-    string content = "hello";
+        string content = "hello";
-    var server = WireMockServer.Start();
+        var server = WireMockServer.Start();
 
-    server
+        server
-        .Given(Request.Create().WithBody((byte[] bodyBytes) => bodyBytes != null))
+            .Given(Request.Create().WithBody((byte[] bodyBytes) => bodyBytes != null))
-        .AtPriority(0)
+            .AtPriority(0)
-        .RespondWith(Response.Create().WithStatusCode(400));
+            .RespondWith(Response.Create().WithStatusCode(400));
-    server
+        server
-        .Given(Request.Create())
+            .Given(Request.Create())
-        .AtPriority(1)
+            .AtPriority(1)
-        .RespondWith(Response.Create().WithStatusCode(200));
+            .RespondWith(Response.Create().WithStatusCode(200));
 
-    // Act
+        // Act
-    var request = new HttpRequestMessage(new HttpMethod(method), "http://localhost:" + server.Ports[0] + "/");
+        var request = new HttpRequestMessage(new HttpMethod(method), "http://localhost:" + server.Ports[0] + "/");
-    request.Content = new StringContent(content);
+        request.Content = new StringContent(content);
-    var response = await new HttpClient().SendAsync(request).ConfigureAwait(false);
+        var response = await new HttpClient().SendAsync(request).ConfigureAwait(false);
 
-    // Assert
+        // Assert
-    Check.That(response.StatusCode).Equals(HttpStatusCode.OK);
+        Check.That(response.StatusCode).Equals(HttpStatusCode.OK);
 
-    server.Stop();
+        server.Stop();
-}
+    }
 #endif
 
     [Theory]
@@ -462,11 +462,10 @@ public async Task WireMockServer_Should_exclude_body_for_methods_where_body_is_d
         settings.CustomMatcherMappings = new Dictionary<string, Func<MatcherModel, IMatcher>>();
         settings.CustomMatcherMappings[nameof(CustomPathParamMatcher)] = matcherModel =>
         {
-            var matcherParams = JsonConvert.DeserializeObject<CustomPathParamMatcherModel>((string)matcherModel.Pattern);
+            var matcherParams = JsonConvert.DeserializeObject<CustomPathParamMatcherModel>((string)matcherModel.Pattern!)!;
             return new CustomPathParamMatcher(
                 matcherModel.RejectOnMatch == true ? MatchBehaviour.RejectOnMatch : MatchBehaviour.AcceptOnMatch,
-                matcherParams.Path, matcherParams.PathParams,
+                matcherParams.Path, matcherParams.PathParams
-                settings.ThrowExceptionWhenMatcherFails == true
             );
         };
 
@@ -510,11 +509,10 @@ public async Task WireMockServer_Should_exclude_body_for_methods_where_body_is_d
         settings.CustomMatcherMappings = new Dictionary<string, Func<MatcherModel, IMatcher>>();
         settings.CustomMatcherMappings[nameof(CustomPathParamMatcher)] = matcherModel =>
         {
-            var matcherParams = JsonConvert.DeserializeObject<CustomPathParamMatcherModel>((string)matcherModel.Pattern);
+            var matcherParams = JsonConvert.DeserializeObject<CustomPathParamMatcherModel>((string)matcherModel.Pattern!)!;
             return new CustomPathParamMatcher(
                 matcherModel.RejectOnMatch == true ? MatchBehaviour.RejectOnMatch : MatchBehaviour.AcceptOnMatch,
-                matcherParams.Path, matcherParams.PathParams,
+                matcherParams.Path, matcherParams.PathParams
-                settings.ThrowExceptionWhenMatcherFails == true
             );
         };