Add Copilot Setup Steps action (#1419)

Allows usage of aspire CLI which is very useful for dev in codespaces (for my next PR).

.github/workflows/copilot-setup-steps.yml

@@ -0,0 +1,36 @@
+name: "Copilot Setup Steps"
+
+# Automatically run the setup steps when they are changed to allow for easy validation, and
+# allow manual testing through the repository's "Actions" tab
+on:
+  workflow_dispatch:
+  push:
+    paths:
+      - .github/workflows/copilot-setup-steps.yml
+  pull_request:
+    paths:
+      - .github/workflows/copilot-setup-steps.yml
+
+jobs:
+  # The job MUST be called `copilot-setup-steps` or it will not be picked up by Copilot.
+  copilot-setup-steps:
+    runs-on: ubuntu-latest
+
+    # Set the permissions to the lowest permissions possible needed for your steps.
+    # Copilot will be given its own token for its operations.
+    permissions:
+      # If you want to clone the repository as part of your setup steps, for example to install dependencies, you'll need the `contents: read` permission. If you don't clone the repository in your setup steps, Copilot will do this for you automatically after the steps complete.
+      contents: read
+
+    # You can define any steps you want, and they will run before the agent starts.
+    # If you do not check out your code, Copilot will do this for you.
+    steps:
+      - name: Install .NET 10.x
+        uses: actions/setup-dotnet@v5
+        with:
+          dotnet-version: |
+            10.x
+          dotnet-quality: preview
+
+      - name: dotnet --info
+        run: dotnet --info

CHANGELOG.md

@@ -1,3 +1,9 @@
+# 1.23.0 (05 January 2026)
+- [#1414](https://github.com/wiremock/WireMock.Net/pull/1414) - Pass the parameter matchOperator in Request.WithPath to its inner calls [bug] contributed by [gbamqzkdyg](https://github.com/gbamqzkdyg)
+- [#1416](https://github.com/wiremock/WireMock.Net/pull/1416) - Fix: Pass AllowedHandlebarsHelpers configuration to Handlebars.Net.Helpers library contributed by [samlatham](https://github.com/samlatham)
+- [#1413](https://github.com/wiremock/WireMock.Net/issues/1413) - Parameter `matchOperator` is not respected in the method Request.WithPath [bug]
+- [#1415](https://github.com/wiremock/WireMock.Net/issues/1415) - HandlebarsSettings AllowedHandlebarsHelpers Configuration Not Applied [bug]
+
 # 1.22.0 (02 January 2026)
 - [#1412](https://github.com/wiremock/WireMock.Net/pull/1412) - chore(testcontainers): bump up Testcontainers to version 4.10.0 [feature] contributed by [vhatsura](https://github.com/vhatsura)
 - [#1411](https://github.com/wiremock/WireMock.Net/issues/1411) - WireMock.Net.Testcontainers isn't compatible with Testcontainers 4.10.0 [bug]

Directory.Build.props

@@ -4,7 +4,7 @@
     </PropertyGroup>
 
     <PropertyGroup>
-        <VersionPrefix>1.22.0</VersionPrefix>
+        <VersionPrefix>1.23.0</VersionPrefix>
         <PackageIcon>WireMock.Net-Logo.png</PackageIcon>
         <PackageProjectUrl>https://github.com/wiremock/WireMock.Net</PackageProjectUrl>
         <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>

Generate-ReleaseNotes.cmd

@@ -1,6 +1,6 @@
 rem https://github.com/StefH/GitHubReleaseNotes
 
-SET version=1.22.0
+SET version=1.23.0
 
 GitHubReleaseNotes --output CHANGELOG.md --skip-empty-releases --exclude-labels wontfix test question invalid doc duplicate example environment --version %version% --token %GH_TOKEN%
 

PackageReleaseNotes.txt

@@ -1,5 +1,7 @@
-# 1.22.0 (02 January 2026)
+# 1.23.0 (05 January 2026)
-- #1412 chore(testcontainers): bump up Testcontainers to version 4.10.0 [feature]
+- #1414 Pass the parameter matchOperator in Request.WithPath to its inner calls [bug]
-- #1411 WireMock.Net.Testcontainers isn't compatible with Testcontainers 4.10.0 [bug]
+- #1416 Fix: Pass AllowedHandlebarsHelpers configuration to Handlebars.Net.Helpers library
+- #1413 Parameter `matchOperator` is not respected in the method Request.WithPath [bug]
+- #1415 HandlebarsSettings AllowedHandlebarsHelpers Configuration Not Applied [bug]
 
 The full release notes can be found here: https://github.com/wiremock/WireMock.Net/blob/master/CHANGELOG.md

examples-Aspire/AspireApp1.AppHost/AspireApp1.AppHost.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
-    <Sdk Name="Aspire.AppHost.Sdk" Version="9.2.0" />
+    <Sdk Name="Aspire.AppHost.Sdk" Version="13.1.0" />
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
@@ -18,7 +18,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Aspire.Hosting.AppHost" Version="9.2.0" />
+        <PackageReference Include="Aspire.Hosting.AppHost" Version="13.1.0" />
     </ItemGroup>
 
     <ItemGroup>

examples-Aspire/AspireApp1.AppHostOriginal/AspireApp1.AppHostOriginal.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
-    <Sdk Name="Aspire.AppHost.Sdk" Version="9.2.0" />
+    <Sdk Name="Aspire.AppHost.Sdk" Version="13.1.0" />
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
@@ -15,7 +15,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Aspire.Hosting.AppHost" Version="9.2.0" />
+        <PackageReference Include="Aspire.Hosting.AppHost" Version="13.1.0" />
     </ItemGroup>
 
 </Project>

examples-Aspire/AspireApp1.Tests/AspireApp1.Tests.csproj

@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Aspire.Hosting.Testing" Version="8.0.0" />
+    <PackageReference Include="Aspire.Hosting.Testing" Version="13.1.0" />
     <PackageReference Include="coverlet.collector" Version="6.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="xunit" Version="2.5.3" />

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

@@ -32,7 +32,7 @@ public class ResponseModel
     public object? BodyAsJson { get; set; }
 
     /// <summary>
-    /// Gets or sets a value indicating whether the Json Body String needs to be indented.
+    /// Gets or sets a value indicating whether child objects to be indented according to the Newtonsoft.Json.JsonTextWriter.Indentation and Newtonsoft.Json.JsonTextWriter.IndentChar settings.
     /// </summary>
     public bool? BodyAsJsonIndented { get; set; }
 

src/WireMock.Net.Abstractions/Models/IBodyData.cs

@@ -37,7 +37,7 @@ public interface IBodyData
     object? BodyAsJson { get; set; }
 
     /// <summary>
-    /// Gets or sets a value indicating whether the Json Body String needs to be indented.
+    /// Gets or sets a value indicating whether child objects to be indented according to the Newtonsoft.Json.JsonTextWriter.Indentation and Newtonsoft.Json.JsonTextWriter.IndentChar settings.
     /// </summary>
     bool? BodyAsJsonIndented { get; set; }
 

src/WireMock.Net.Aspire/WireMock.Net.Aspire.csproj

@@ -45,7 +45,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Aspire.Hosting" Version="9.2.0" />
+        <PackageReference Include="Aspire.Hosting" Version="13.1.0" />
     </ItemGroup>
 
     <ItemGroup>

src/WireMock.Net.Extensions.Routing/WireMock.Net.Extensions.Routing.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <Description>WireMock.Net.Routing extends WireMock.Net with modern, minimal-API-style routing for .NET</Description>
         <Authors>Gennadii Saltyshchak</Authors>
@@ -25,7 +25,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="JsonConverter.Abstractions" Version="0.8.0" />
+      <PackageReference Include="JsonConverter.Newtonsoft.Json" Version="0.7.0" />
     </ItemGroup>
 
     <ItemGroup>

src/WireMock.Net.Minimal/MappingBuilder.cs

@@ -3,6 +3,7 @@
 using System;
 using System.Linq;
 using System.Text;
+using Newtonsoft.Json;
 using Stef.Validation;
 using WireMock.Admin.Mappings;
 using WireMock.Matchers.Request;
@@ -163,8 +164,8 @@ public class MappingBuilder : IMappingBuilder
         }
     }
 
-    private string ToJson(object value)
+    private static string ToJson(object value)
     {
-        return _settings.DefaultJsonSerializer.Serialize(value, JsonSerializationConstants.JsonConverterOptionsDefault);
+        return JsonConvert.SerializeObject(value, JsonSerializationConstants.JsonSerializerSettingsDefault);
     }
 }

src/WireMock.Net.Minimal/RequestBuilders/Request.WithPath.cs

@@ -21,7 +21,7 @@ public partial class Request
     {
         Guard.NotNullOrEmpty(matchers);
 
-        _requestMatchers.Add(new RequestMessagePathMatcher(MatchBehaviour.AcceptOnMatch, MatchOperator.Or, matchers));
+        _requestMatchers.Add(new RequestMessagePathMatcher(MatchBehaviour.AcceptOnMatch, matchOperator, matchers));
         return this;
     }
 

src/WireMock.Net.Minimal/Serialization/MappingSerializer.cs

@@ -1,49 +0,0 @@
-// Copyright © WireMock.Net
-
-using System;
-using JsonConverter.Abstractions;
-using Newtonsoft.Json.Linq;
-#if NETSTANDARD2_0_OR_GREATER || NETCOREAPP3_1_OR_GREATER || NET6_0_OR_GREATER || NET461
-using System.Text.Json;
-#endif
-
-namespace WireMock.Serialization;
-
-internal class MappingSerializer(IJsonConverter jsonConverter)
-{
-    internal T[] DeserializeJsonToArray<T>(string value)
-    {
-        return DeserializeObjectToArray<T>(jsonConverter.Deserialize<object>(value)!);
-    }
-
-    internal static T[] DeserializeObjectToArray<T>(object value)
-    {
-        if (value is JArray jArray)
-        {
-            return jArray.ToObject<T[]>()!;
-        }
-
-        if (value is JObject jObject)
-        {
-            var singleResult = jObject.ToObject<T>();
-            return [singleResult!];
-        }
-
-#if NETSTANDARD2_0_OR_GREATER || NETCOREAPP3_1_OR_GREATER || NET6_0_OR_GREATER || NET461
-        if (value is JsonElement jElement)
-        {
-            if (jElement.ValueKind == JsonValueKind.Array)
-            {
-                return jElement.Deserialize<T[]>()!;
-            }
-
-            if (jElement.ValueKind == JsonValueKind.Object)
-            {
-                var singleResult = jElement.Deserialize<T>();
-                return [singleResult!];
-            }
-        }
-#endif
-        throw new InvalidOperationException("Cannot deserialize the provided value to an array or object.");
-    }
-}

src/WireMock.Net.Minimal/Serialization/MappingToFileSaver.cs

@@ -2,8 +2,7 @@
 
 using System.IO;
 using System.Linq;
-using JsonConverter.Abstractions;
+using Newtonsoft.Json;
-using JsonConverter.Newtonsoft.Json;
 using Stef.Validation;
 using WireMock.Settings;
 
@@ -13,15 +12,12 @@ internal class MappingToFileSaver
 {
     private readonly WireMockServerSettings _settings;
     private readonly MappingConverter _mappingConverter;
-    private readonly IJsonConverter _jsonConverter;
     private readonly MappingFileNameSanitizer _fileNameSanitizer;
 
     public MappingToFileSaver(WireMockServerSettings settings, MappingConverter mappingConverter)
     {
         _settings = Guard.NotNull(settings);
         _mappingConverter = Guard.NotNull(mappingConverter);
-
-        _jsonConverter = settings.DefaultJsonSerializer ?? new NewtonsoftJsonConverter();
         _fileNameSanitizer = new MappingFileNameSanitizer(settings);
     }
 
@@ -60,8 +56,6 @@ internal class MappingToFileSaver
     {
         _settings.Logger.Info("Saving Mapping file {0}", path);
 
-        var json = _jsonConverter.Serialize(value, JsonSerializationConstants.JsonConverterOptionsDefault);
+        _settings.FileSystemHandler.WriteMappingFile(path, JsonConvert.SerializeObject(value, JsonSerializationConstants.JsonSerializerSettingsDefault));
-
-        _settings.FileSystemHandler.WriteMappingFile(path, json);
     }
 }

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

@@ -7,7 +7,7 @@ using System.Linq;
 using System.Net;
 using System.Text;
 using JetBrains.Annotations;
-using JsonConverter.Abstractions;
+using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
 using Stef.Validation;
 using WireMock.Admin.Mappings;
@@ -236,7 +236,7 @@ public partial class WireMockServer
 
         if (FileHelper.TryReadMappingFileWithRetryAndDelay(_settings.FileSystemHandler, path, out var value))
         {
-            var mappingModels = _mappingSerializer.DeserializeJsonToArray<MappingModel>(value);
+            var mappingModels = DeserializeJsonToArray<MappingModel>(value);
             if (mappingModels.Length == 1 && Guid.TryParse(filenameWithoutExtension, out var guidFromFilename))
             {
                 ConvertMappingAndRegisterAsRespondProvider(mappingModels[0], guidFromFilename, path);
@@ -826,31 +826,25 @@ public partial class WireMockServer
         }
     }
 
-    private ResponseMessage ToJson<T>(T result, bool keepNullValues = false, object? statusCode = null)
+    private static Encoding? ToEncoding(EncodingModel? encodingModel)
     {
-        var jsonOptions = new JsonConverterOptions
+        return encodingModel != null ? Encoding.GetEncoding(encodingModel.CodePage) : null;
-        {
+    }
-            WriteIndented = true,
-            IgnoreNullValues = !keepNullValues
-        };
 
+    private static ResponseMessage ToJson<T>(T result, bool keepNullValues = false, object? statusCode = null)
+    {
         return new ResponseMessage
         {
             BodyData = new BodyData
             {
                 DetectedBodyType = BodyType.String,
-                BodyAsString = _settings.DefaultJsonSerializer.Serialize(result!, jsonOptions)
+                BodyAsString = JsonConvert.SerializeObject(result, keepNullValues ? JsonSerializationConstants.JsonSerializerSettingsIncludeNullValues : JsonSerializationConstants.JsonSerializerSettingsDefault)
             },
             StatusCode = statusCode ?? (int)HttpStatusCode.OK,
             Headers = new Dictionary<string, WireMockList<string>> { { HttpKnownHeaderNames.ContentType, new WireMockList<string>(WireMockConstants.ContentTypeJson) } }
         };
     }
 
-    private static Encoding? ToEncoding(EncodingModel? encodingModel)
-    {
-        return encodingModel != null ? Encoding.GetEncoding(encodingModel.CodePage) : null;
-    }
-
     private static ResponseMessage ToResponseMessage(string text)
     {
         return new ResponseMessage
@@ -865,18 +859,6 @@ public partial class WireMockServer
         };
     }
 
-    private static T[] DeserializeRequestMessageToArray<T>(IRequestMessage requestMessage)
-    {
-        if (requestMessage.BodyData?.DetectedBodyType == BodyType.Json && requestMessage.BodyData.BodyAsJson != null)
-        {
-            var bodyAsJson = requestMessage.BodyData.BodyAsJson!;
-
-            return MappingSerializer.DeserializeObjectToArray<T>(bodyAsJson);
-        }
-
-        throw new NotSupportedException();
-    }
-
     private static T DeserializeObject<T>(IRequestMessage requestMessage) where T : new()
     {
         switch (requestMessage.BodyData?.DetectedBodyType)
@@ -892,4 +874,32 @@ public partial class WireMockServer
                 throw new NotSupportedException();
         }
     }
+
+    private static T[] DeserializeRequestMessageToArray<T>(IRequestMessage requestMessage)
+    {
+        if (requestMessage.BodyData?.DetectedBodyType == BodyType.Json && requestMessage.BodyData.BodyAsJson != null)
+        {
+            var bodyAsJson = requestMessage.BodyData.BodyAsJson;
+
+            return DeserializeObjectToArray<T>(bodyAsJson);
+        }
+
+        throw new NotSupportedException();
+    }
+
+    private static T[] DeserializeJsonToArray<T>(string value)
+    {
+        return DeserializeObjectToArray<T>(JsonUtils.DeserializeObject(value));
+    }
+
+    private static T[] DeserializeObjectToArray<T>(object value)
+    {
+        if (value is JArray jArray)
+        {
+            return jArray.ToObject<T[]>()!;
+        }
+
+        var singleResult = ((JObject)value).ToObject<T>();
+        return new[] { singleResult! };
+    }
 }

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

@@ -31,7 +31,7 @@ public partial class WireMockServer
 
         if (FileHelper.TryReadMappingFileWithRetryAndDelay(_settings.FileSystemHandler, path, out var value))
         {
-            var mappings = _mappingSerializer.DeserializeJsonToArray<OrgMapping>(value);
+            var mappings = DeserializeJsonToArray<OrgMapping>(value);
             foreach (var mapping in mappings)
             {
                 if (mappings.Length == 1 && Guid.TryParse(filenameWithoutExtension, out var guidFromFilename))

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

@@ -11,7 +11,6 @@ using System.Net.Http;
 using System.Threading;
 using AnyOfTypes;
 using JetBrains.Annotations;
-using JsonConverter.Newtonsoft.Json;
 using Newtonsoft.Json;
 using Stef.Validation;
 using WireMock.Admin.Mappings;
@@ -48,7 +47,6 @@ public partial class WireMockServer : IWireMockServer
     private readonly MappingBuilder _mappingBuilder;
     private readonly IGuidUtils _guidUtils = new GuidUtils();
     private readonly IDateTimeUtils _dateTimeUtils = new DateTimeUtils();
-    private readonly MappingSerializer _mappingSerializer;
 
     /// <inheritdoc />
     [PublicAPI]
@@ -359,8 +357,6 @@ public partial class WireMockServer : IWireMockServer
     {
         _settings = Guard.NotNull(settings);
 
-        _mappingSerializer = new MappingSerializer(settings.DefaultJsonSerializer ?? new NewtonsoftJsonConverter());
-
         // Set default values if not provided
         _settings.Logger = settings.Logger ?? new WireMockNullLogger();
         _settings.FileSystemHandler = settings.FileSystemHandler ?? new LocalFileSystemHandler();
@@ -643,7 +639,7 @@ public partial class WireMockServer : IWireMockServer
     [PublicAPI]
     public IWireMockServer WithMapping(string mappings)
     {
-        var mappingModels = _mappingSerializer.DeserializeJsonToArray<MappingModel>(mappings);
+        var mappingModels = DeserializeJsonToArray<MappingModel>(mappings);
         foreach (var mappingModel in mappingModels)
         {
             ConvertMappingAndRegisterAsRespondProvider(mappingModel, mappingModel.Guid ?? Guid.NewGuid());

src/WireMock.Net.Minimal/Transformers/Handlebars/WireMockHandlebarsHelpers.cs

@@ -39,6 +39,8 @@ internal static class WireMockHandlebarsHelpers
 #endif
             o.CustomHelperPaths = paths;
 
+            o.Categories = settings.HandlebarsSettings?.AllowedHandlebarsHelpers ?? HandlebarsSettings.DefaultAllowedHandlebarsHelpers;
+
             o.CustomHelpers = new Dictionary<string, IHelpers>();
             if (settings.HandlebarsSettings?.AllowedCustomHandlebarsHelpers.HasFlag(CustomHandlebarsHelpers.File) == true)
             {

src/WireMock.Net.Minimal/WireMock.Net.Minimal.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <Description>Minimal version from the lightweight Http Mocking Server for .NET</Description>
         <AssemblyTitle>WireMock.Net.Minimal</AssemblyTitle>
@@ -57,8 +57,8 @@
     </ItemGroup>
 
     <ItemGroup>
-        <!--<PackageReference Include="JsonConverter.Abstractions" Version="0.8.0" />-->
+        <PackageReference Include="JsonConverter.Abstractions" Version="0.7.0" />
-        <!--<PackageReference Include="JsonConverter.Newtonsoft.Json" Version="0.8.0" />-->
+        <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
         <PackageReference Include="NJsonSchema.Extensions" Version="0.1.0" />
         <PackageReference Include="NSwag.Core" Version="13.16.1" />
         <PackageReference Include="SimMetrics.Net" Version="1.0.5" />
@@ -118,13 +118,11 @@
 
         <!-- https://github.com/wiremock/WireMock.Net/issues/507 -->
         <PackageReference Include="Microsoft.AspNetCore.Server.IIS" Version="2.2.6" />
-        <PackageReference Include="JsonConverter.System.Text.Json" Version="0.8.0" />
     </ItemGroup>
 
     <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' or '$(TargetFramework)' == 'net5.0' or '$(TargetFramework)' == 'net6.0' or '$(TargetFramework)' == 'net7.0' or '$(TargetFramework)' == 'net8.0'">
         <FrameworkReference Include="Microsoft.AspNetCore.App" />
         <PackageReference Include="Scriban.Signed" Version="5.5.0" />
-        <PackageReference Include="JsonConverter.System.Text.Json" Version="0.8.0" />
     </ItemGroup>
 
     <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">

src/WireMock.Net.RestClient/WireMock.Net.RestClient.csproj

@@ -33,7 +33,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="JsonConverter.Newtonsoft.Json" Version="0.8.0" />
+        <PackageReference Include="JsonConverter.Newtonsoft.Json" Version="0.7.0" />
         <PackageReference Include="RestEase" Version="1.6.4" />
         <PackageReference Include="Stef.Validation" Version="0.1.1" />
     </ItemGroup>

src/WireMock.Net.Shared/Serialization/JsonSerializationConstants.cs

@@ -1,6 +1,5 @@
 // Copyright © WireMock.Net
 
-using JsonConverter.Abstractions;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Serialization;
 
@@ -8,30 +7,24 @@ namespace WireMock.Serialization;
 
 internal static class JsonSerializationConstants
 {
-    internal static readonly JsonConverterOptions JsonConverterOptionsDefault = new()
+    public static readonly JsonSerializerSettings JsonSerializerSettingsDefault = new()
     {
-        WriteIndented = true,
+        Formatting = Formatting.Indented,
-        IgnoreNullValues = true
+        NullValueHandling = NullValueHandling.Ignore
     };
 
-    //internal static readonly JsonSerializerSettings JsonSerializerSettingsDefault = new()
+    public static readonly JsonSerializerSettings JsonSerializerSettingsIncludeNullValues = new()
-    //{
-    //    Formatting = Formatting.Indented,
-    //    NullValueHandling = NullValueHandling.Ignore
-    //};
-
-    internal static readonly JsonSerializerSettings JsonSerializerSettingsIncludeNullValues = new()
     {
         Formatting = Formatting.Indented,
         NullValueHandling = NullValueHandling.Include
     };
 
-    internal static readonly JsonSerializerSettings JsonDeserializerSettingsWithDateParsingNone = new()
+    public static readonly JsonSerializerSettings JsonDeserializerSettingsWithDateParsingNone = new()
     {
         DateParseHandling = DateParseHandling.None
     };
 
-    internal static readonly JsonSerializerSettings JsonSerializerSettingsPact = new()
+    public static readonly JsonSerializerSettings JsonSerializerSettingsPact = new()
     {
         Formatting = Formatting.Indented,
         NullValueHandling = NullValueHandling.Ignore,

src/WireMock.Net.Shared/Settings/WireMockServerSettings.cs

@@ -14,8 +14,6 @@ using WireMock.RegularExpressions;
 using WireMock.Types;
 using System.Globalization;
 using WireMock.Models;
-using JsonConverter.Abstractions;
-using JsonConverter.Newtonsoft.Json;
 
 #if USE_ASPNETCORE
 using Microsoft.Extensions.DependencyInjection;
@@ -340,14 +338,4 @@ public class WireMockServerSettings
     /// </summary>
     [PublicAPI]
     public HandlebarsSettings? HandlebarsSettings { get; set; }
-
-    /// <summary>
-    /// Gets or sets the default JSON converter used for serialization.
-    /// </summary>
-    /// <remarks>
-    /// Set this property to customize how objects are serialized to and deserialized from JSON during mapping.
-    /// Default is <see cref="NewtonsoftJsonConverter"/>.
-    /// </remarks>
-    [PublicAPI]
-    public IJsonConverter DefaultJsonSerializer { get; set; } = new NewtonsoftJsonConverter();
 }

src/WireMock.Net.Shared/WireMock.Net.Shared.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <Description>Shared interfaces, models, enumerations and types.</Description>
         <Authors>Stef Heyenrath</Authors>
@@ -48,10 +48,9 @@
         </PackageReference>
         <PackageReference Include="Stef.Validation" Version="0.1.1" />
         <PackageReference Include="AnyOf" Version="0.4.0" />
-        <!--<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />-->
+        <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
         <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="1.1.0" />
-        <!--<PackageReference Include="JsonConverter.Abstractions" Version="0.8.0" />-->
+        <PackageReference Include="JsonConverter.Abstractions" Version="0.7.0" />
-        <PackageReference Include="JsonConverter.Newtonsoft.Json" Version="0.8.0" />
     </ItemGroup>
 
     <ItemGroup>

test/WireMock.Net.Aspire.TestAppHost/WireMock.Net.Aspire.TestAppHost.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
-    <Sdk Name="Aspire.AppHost.Sdk" Version="9.2.0" />
+    <Sdk Name="Aspire.AppHost.Sdk" Version="13.1.0" />
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
@@ -19,7 +19,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Aspire.Hosting.AppHost" Version="9.2.0" />
+        <PackageReference Include="Aspire.Hosting.AppHost" Version="13.1.0" />
     </ItemGroup>
 
     <ItemGroup>

test/WireMock.Net.Aspire.Tests/WireMock.Net.Aspire.Tests.csproj

@@ -13,7 +13,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Aspire.Hosting.Testing" Version="9.2.0" />
+        <PackageReference Include="Aspire.Hosting.Testing" Version="13.1.0" />
         <PackageReference Include="Codecov" Version="1.13.0" />
         <PackageReference Include="coverlet.msbuild" Version="6.0.2">
             <PrivateAssets>all</PrivateAssets>

test/WireMock.Net.Tests/ResponseBuilders/ResponseWithBodyTests.cs

@@ -4,7 +4,6 @@ using System;
 using System.Text;
 using System.Threading.Tasks;
 using FluentAssertions;
-using JsonConverter.Newtonsoft.Json;
 using Moq;
 using Newtonsoft.Json.Linq;
 using NFluent;
@@ -317,11 +316,12 @@ public class ResponseWithBodyTests
         var response = await responseBuilder.ProvideResponseAsync(_mappingMock.Object, request1, _settings).ConfigureAwait(false);
 
         Check.That(response.Message.StatusCode).IsEqualTo(200);
-        Check.That(response.Message.BodyData?.BodyAsString).Contains("File deleted.");
+        Check.That(response.Message.BodyData.BodyAsString).Contains("File deleted.");
     }
 
+#if !(NET451 || NET452)
     [Fact]
-    public async Task Response_ProvideResponse_WithBody_NewtonsoftJsonConverter()
+    public async Task Response_ProvideResponse_WithBody_IJsonConverter_SystemTextJson()
     {
         // Arrange
         var requestBody = new BodyData
@@ -331,34 +331,13 @@ public class ResponseWithBodyTests
         };
         var request = new RequestMessage(new UrlDetails("http://localhost/foo"), "POST", ClientIp, requestBody);
 
-        var responseBuilder = Response.Create().WithBody(new { foo = "< > & ' 😀 👍 ❤️", n = 42 }, new NewtonsoftJsonConverter());
+        var responseBuilder = Response.Create().WithBody(new { foo = "bar", n = 42 }, new JsonConverter.System.Text.Json.SystemTextJsonConverter());
 
         // Act
         var response = await responseBuilder.ProvideResponseAsync(_mappingMock.Object, request, _settings).ConfigureAwait(false);
 
         // Assert
-        response.Message.BodyData!.BodyAsString.Should().Be("""{"foo":"< > & ' 😀 👍 ❤️","n":42}""");
+        response.Message.BodyData!.BodyAsString.Should().Be(@"{""foo"":""bar"",""n"":42}");
-    }
-
-#if !(NET451 || NET452 || NET461)
-    [Fact]
-    public async Task Response_ProvideResponse_WithBody_SystemTextJsonConverter()
-    {
-        // Arrange
-        var requestBody = new BodyData
-        {
-            DetectedBodyType = BodyType.String,
-            BodyAsString = "abc"
-        };
-        var request = new RequestMessage(new UrlDetails("http://localhost/foo"), "POST", ClientIp, requestBody);
-
-        var responseBuilder = Response.Create().WithBody(new { foo = "< > & ' 😀 👍 ❤️", n = 42 }, new JsonConverter.System.Text.Json.SystemTextJsonConverter());
-
-        // Act
-        var response = await responseBuilder.ProvideResponseAsync(_mappingMock.Object, request, _settings).ConfigureAwait(false);
-
-        // Assert
-        response.Message.BodyData!.BodyAsString.Should().Be("""{"foo":"\u003C \u003E \u0026 \u0027 \uD83D\uDE00 \uD83D\uDC4D \u2764\uFE0F","n":42}""");
     }
 #endif
 }

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

@@ -1,326 +0,0 @@
-// Copyright © WireMock.Net
-
-using System;
-using FluentAssertions;
-using JsonConverter.Newtonsoft.Json;
-using WireMock.Admin.Mappings;
-using WireMock.Serialization;
-using Xunit;
-#if NET8_0_OR_GREATER
-using JsonConverter.System.Text.Json;
-#endif
-
-namespace WireMock.Net.Tests.Serialization;
-
-public class MappingSerializerTests
-{
-    private const string SingleMappingJson =
-        """
-        {
-            "Guid": "12345678-1234-1234-1234-123456789012",
-            "Priority": 1,
-            "Request": {
-                "Path": "/test"
-            },
-            "Response": {
-                "StatusCode": 200
-            }
-        }
-        """;
-
-    private const string ArrayMappingJson =
-        """
-        [
-            {
-                "Guid": "12345678-1234-1234-1234-123456789012",
-                "Priority": 1,
-                "Request": {
-                    "Path": "/test1"
-                },
-                "Response": {
-                    "StatusCode": 200
-                }
-            },
-            {
-                "Guid": "87654321-4321-4321-4321-210987654321",
-                "Priority": 2,
-                "Request": {
-                    "Path": "/test2"
-                },
-                "Response": {
-                    "StatusCode": 404
-                }
-            }
-        ]
-        """;
-
-    [Fact]
-    public void MappingSerializer_DeserializeJsonToArray_WithNewtonsoftJson_SingleObject_ShouldReturnArray()
-    {
-        // Arrange
-        var jsonConverter = new NewtonsoftJsonConverter();
-        var serializer = new MappingSerializer(jsonConverter);
-
-        // Act
-        var result = serializer.DeserializeJsonToArray<MappingModel>(SingleMappingJson);
-
-        // Assert
-        result.Should().NotBeNull();
-        result.Should().HaveCount(1);
-        result[0].Guid.Should().Be(Guid.Parse("12345678-1234-1234-1234-123456789012"));
-        result[0].Priority.Should().Be(1);
-    }
-
-    [Fact]
-    public void MappingSerializer_DeserializeJsonToArray_WithNewtonsoftJson_Array_ShouldReturnArray()
-    {
-        // Arrange
-        var jsonConverter = new NewtonsoftJsonConverter();
-        var serializer = new MappingSerializer(jsonConverter);
-
-        // Act
-        var result = serializer.DeserializeJsonToArray<MappingModel>(ArrayMappingJson);
-
-        // Assert
-        result.Should().NotBeNull();
-        result.Should().HaveCount(2);
-        result[0].Guid.Should().Be(Guid.Parse("12345678-1234-1234-1234-123456789012"));
-        result[0].Priority.Should().Be(1);
-        result[1].Guid.Should().Be(Guid.Parse("87654321-4321-4321-4321-210987654321"));
-        result[1].Priority.Should().Be(2);
-    }
-
-    [Fact]
-    public void MappingSerializer_DeserializeJsonToArray_WithNewtonsoftJson_EmptyArray_ShouldReturnEmptyArray()
-    {
-        // Arrange
-        var jsonConverter = new NewtonsoftJsonConverter();
-        var serializer = new MappingSerializer(jsonConverter);
-        var emptyArrayJson = "[]";
-
-        // Act
-        var result = serializer.DeserializeJsonToArray<MappingModel>(emptyArrayJson);
-
-        // Assert
-        result.Should().NotBeNull();
-        result.Should().BeEmpty();
-    }
-
-    [Fact]
-    public void MappingSerializer_DeserializeJsonToArray_WithNewtonsoftJson_InvalidJson_ShouldThrowException()
-    {
-        // Arrange
-        var jsonConverter = new NewtonsoftJsonConverter();
-        var serializer = new MappingSerializer(jsonConverter);
-        var invalidJson = "not valid json";
-
-        // Act
-        Action act = () => serializer.DeserializeJsonToArray<MappingModel>(invalidJson);
-
-        // Assert
-        act.Should().Throw<Exception>();
-    }
-
-    [Fact]
-    public void MappingSerializer_DeserializeJsonToArray_WithNewtonsoftJson_ComplexMapping_ShouldDeserializeCorrectly()
-    {
-        // Arrange
-        var jsonConverter = new NewtonsoftJsonConverter();
-        var serializer = new MappingSerializer(jsonConverter);
-        var complexJson =
-            """
-            {
-                "Guid": "12345678-1234-1234-1234-123456789012",
-                "Title": "Test Mapping",
-                "Description": "A test mapping",
-                "Priority": 10,
-                "Request": {
-                    "Path": "/api/test",
-                    "Methods": ["GET", "POST"]
-                },
-                "Response": {
-                    "StatusCode": 201,
-                    "Body": "Test Response"
-                }
-            }
-            """;
-
-        // Act
-        var result = serializer.DeserializeJsonToArray<MappingModel>(complexJson);
-
-        // Assert
-        result.Should().NotBeNull();
-        result.Should().HaveCount(1);
-        result[0].Guid.Should().Be(Guid.Parse("12345678-1234-1234-1234-123456789012"));
-        result[0].Title.Should().Be("Test Mapping");
-        result[0].Description.Should().Be("A test mapping");
-        result[0].Priority.Should().Be(10);
-    }
-
-    [Fact]
-    public void MappingSerializer_DeserializeJsonToArray_WithNewtonsoftJson_NullValue_ShouldThrowException()
-    {
-        // Arrange
-        var jsonConverter = new NewtonsoftJsonConverter();
-        var serializer = new MappingSerializer(jsonConverter);
-        var nullJson = "null";
-
-        // Act
-        Action act = () => serializer.DeserializeJsonToArray<MappingModel>(nullJson);
-
-        // Assert
-        act.Should().Throw<Exception>();
-    }
-
-    [Fact]
-    public void MappingSerializer_DeserializeJsonToArray_WithNewtonsoftJson_PrimitiveValue_ShouldThrowInvalidOperationException()
-    {
-        // Arrange
-        var jsonConverter = new NewtonsoftJsonConverter();
-        var serializer = new MappingSerializer(jsonConverter);
-        var primitiveJson = "\"string value\"";
-
-        // Act
-        Action act = () => serializer.DeserializeJsonToArray<MappingModel>(primitiveJson);
-
-        // Assert
-        act.Should().Throw<InvalidOperationException>()
-            .WithMessage("Cannot deserialize the provided value to an array or object.");
-    }
-
-#if NET8_0_OR_GREATER
-    [Fact]
-    public void MappingSerializer_DeserializeJsonToArray_WithSystemTextJson_SingleObject_ShouldReturnArray()
-    {
-        // Arrange
-        var jsonConverter = new SystemTextJsonConverter();
-        var serializer = new MappingSerializer(jsonConverter);
-
-        // Act
-        var result = serializer.DeserializeJsonToArray<MappingModel>(SingleMappingJson);
-
-        // Assert
-        result.Should().NotBeNull();
-        result.Should().HaveCount(1);
-        result[0].Guid.Should().Be(Guid.Parse("12345678-1234-1234-1234-123456789012"));
-        result[0].Priority.Should().Be(1);
-    }
-
-    [Fact]
-    public void MappingSerializer_DeserializeJsonToArray_WithSystemTextJson_Array_ShouldReturnArray()
-    {
-        // Arrange
-        var jsonConverter = new SystemTextJsonConverter();
-        var serializer = new MappingSerializer(jsonConverter);
-
-        // Act
-        var result = serializer.DeserializeJsonToArray<MappingModel>(ArrayMappingJson);
-
-        // Assert
-        result.Should().NotBeNull();
-        result.Should().HaveCount(2);
-        result[0].Guid.Should().Be(Guid.Parse("12345678-1234-1234-1234-123456789012"));
-        result[0].Priority.Should().Be(1);
-        result[1].Guid.Should().Be(Guid.Parse("87654321-4321-4321-4321-210987654321"));
-        result[1].Priority.Should().Be(2);
-    }
-
-    [Fact]
-    public void MappingSerializer_DeserializeJsonToArray_WithSystemTextJson_EmptyArray_ShouldReturnEmptyArray()
-    {
-        // Arrange
-        var jsonConverter = new SystemTextJsonConverter();
-        var serializer = new MappingSerializer(jsonConverter);
-        var emptyArrayJson = "[]";
-
-        // Act
-        var result = serializer.DeserializeJsonToArray<MappingModel>(emptyArrayJson);
-
-        // Assert
-        result.Should().NotBeNull();
-        result.Should().BeEmpty();
-    }
-
-    [Fact]
-    public void MappingSerializer_DeserializeJsonToArray_WithSystemTextJson_InvalidJson_ShouldThrowException()
-    {
-        // Arrange
-        var jsonConverter = new SystemTextJsonConverter();
-        var serializer = new MappingSerializer(jsonConverter);
-        var invalidJson = "not valid json";
-
-        // Act
-        Action act = () => serializer.DeserializeJsonToArray<MappingModel>(invalidJson);
-
-        // Assert
-        act.Should().Throw<Exception>();
-    }
-
-    [Fact]
-    public void MappingSerializer_DeserializeJsonToArray_WithSystemTextJson_ComplexMapping_ShouldDeserializeCorrectly()
-    {
-        // Arrange
-        var jsonConverter = new SystemTextJsonConverter();
-        var serializer = new MappingSerializer(jsonConverter);
-        var complexJson =
-            """
-            {
-                "Guid": "12345678-1234-1234-1234-123456789012",
-                "Title": "Test Mapping",
-                "Description": "A test mapping",
-                "Priority": 10,
-                "Request": {
-                    "Path": "/api/test",
-                    "Methods": ["GET", "POST"]
-                },
-                "Response": {
-                    "StatusCode": 201,
-                    "Body": "Test Response"
-                }
-            }
-            """;
-
-        // Act
-        var result = serializer.DeserializeJsonToArray<MappingModel>(complexJson);
-
-        // Assert
-        result.Should().NotBeNull();
-        result.Should().HaveCount(1);
-        result[0].Guid.Should().Be(Guid.Parse("12345678-1234-1234-1234-123456789012"));
-        result[0].Title.Should().Be("Test Mapping");
-        result[0].Description.Should().Be("A test mapping");
-        result[0].Priority.Should().Be(10);
-    }
-
-    [Fact]
-    public void MappingSerializer_DeserializeJsonToArray_WithSystemTextJson_NullValue_ShouldThrowException()
-    {
-        // Arrange
-        var jsonConverter = new SystemTextJsonConverter();
-        var serializer = new MappingSerializer(jsonConverter);
-        var nullJson = "null";
-
-        // Act
-        Action act = () => serializer.DeserializeJsonToArray<MappingModel>(nullJson);
-
-        // Assert
-        act.Should().Throw<Exception>();
-    }
-
-    [Fact]
-    public void MappingSerializer_DeserializeJsonToArray_WithSystemTextJson_PrimitiveValue_ShouldThrowInvalidOperationException()
-    {
-        // Arrange
-        var jsonConverter = new SystemTextJsonConverter();
-        var serializer = new MappingSerializer(jsonConverter);
-        var primitiveJson = "\"string value\"";
-
-        // Act
-        Action act = () => serializer.DeserializeJsonToArray<MappingModel>(primitiveJson);
-
-        // Assert
-        act.Should().Throw<InvalidOperationException>()
-            .WithMessage("Cannot deserialize the provided value to an array or object.");
-    }
-#endif
-}

test/WireMock.Net.Tests/Settings/HandlebarsSettingsTests.cs

@@ -0,0 +1,93 @@
+// Copyright © WireMock.Net
+
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+using FluentAssertions;
+using HandlebarsDotNet;
+using HandlebarsDotNet.Helpers.Enums;
+using Moq;
+using WireMock.Handlers;
+using WireMock.Models;
+using WireMock.ResponseBuilders;
+using WireMock.Settings;
+using Xunit;
+
+namespace WireMock.Net.Tests.Settings;
+
+public class HandlebarsSettingsTests
+{
+    private const string ClientIp = "::1";
+
+    private readonly WireMockServerSettings _settings;
+    private readonly Mock<IMapping> _mappingMock;
+    private readonly Mock<IFileSystemHandler> _fileSystemHandlerMock;
+
+    public HandlebarsSettingsTests()
+    {
+        _mappingMock = new Mock<IMapping>();
+
+        _fileSystemHandlerMock = new Mock<IFileSystemHandler>(MockBehavior.Strict);
+
+        _settings = new WireMockServerSettings
+        {
+            FileSystemHandler = _fileSystemHandlerMock.Object
+        };
+    }
+
+    [Fact]
+    public async Task Response_HandlebarsHelpers_Environment_NotAllowed_By_Default()
+    {
+        // Arrange
+        var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "GET", ClientIp);
+
+        var responseBuilder = Response.Create()
+            .WithBody("Username: {{Environment.GetEnvironmentVariable \"USERNAME\"}}")
+            .WithTransformer();
+
+        // Act
+        Func<Task> action = () => responseBuilder.ProvideResponseAsync(_mappingMock.Object, request, _settings);
+
+        // Assert
+        await action.Should().ThrowAsync<HandlebarsRuntimeException>();
+    }
+
+    [Fact]
+    public async Task Response_HandlebarsHelpers_Environment_Allowed_When_Configured()
+    {
+        // Arrange
+        var settingsWithEnv = new WireMockServerSettings
+        {
+            FileSystemHandler = _fileSystemHandlerMock.Object,
+            HandlebarsSettings = new HandlebarsSettings
+            {
+                AllowedHandlebarsHelpers = HandlebarsSettings.DefaultAllowedHandlebarsHelpers
+                    .Concat([Category.Environment])
+                    .ToArray()
+            }
+        };
+
+        var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "GET", ClientIp);
+
+        var responseBuilder = Response.Create()
+            .WithBody("User: {{Environment.GetEnvironmentVariable \"USERNAME\"}}")
+            .WithTransformer();
+
+        // Act
+        var response = await responseBuilder.ProvideResponseAsync(_mappingMock.Object, request, settingsWithEnv).ConfigureAwait(false);
+
+        // Assert
+        response.Message?.BodyData?.BodyAsString.Should().NotContain("{{Environment.GetEnvironmentVariable");
+        response.Message?.BodyData?.BodyAsString.Should().StartWith("User: ");
+    }
+
+    [Fact]
+    public void DefaultAllowedHandlebarsHelpers_Should_Not_Include_EnvironmentAndDynamicLinq()
+    {
+        // Assert
+        HandlebarsSettings.DefaultAllowedHandlebarsHelpers.Should()
+            .NotContain(Category.Environment)
+            .And
+            .NotContain(Category.DynamicLinq);
+    }
+}

test/WireMock.Net.Tests/WireMock.Net.Tests.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
         <Authors>Stef Heyenrath</Authors>
@@ -107,7 +107,7 @@
 
     <ItemGroup Condition="'$(TargetFramework)' != 'net452'">
         <PackageReference Include="System.Net.Http.Json" Version="8.0.1" />
-        <!--<PackageReference Include="JsonConverter.System.Text.Json" Version="0.8.0" />-->
+        <PackageReference Include="JsonConverter.System.Text.Json" Version="0.7.0" />
         <PackageReference Include="Google.Protobuf" Version="3.25.1" />
         <PackageReference Include="Grpc.Net.Client" Version="2.60.0" />
         <PackageReference Include="Grpc.Tools" Version="2.60.0">

test/WireMock.Net.Tests/WireMockServerTests.WithBody.cs

@@ -6,6 +6,7 @@ using System.Collections.Generic;
 using System.IO;
 using System.Net;
 using System.Net.Http;
+using System.Net.Http.Headers;
 using System.Text;
 using System.Threading.Tasks;
 using FluentAssertions;
@@ -33,10 +34,11 @@ public partial class WireMockServerTests
             Request.Create()
                 .WithPath("/a")
                 .WithBody(
-                    [
+                    new IMatcher[]
+                    {
                         new JmesPathMatcher("requestId == '1'"),
                         new JmesPathMatcher("value == 'A'")
-                    ],
+                    },
                     MatchOperator.And
                 )
                 .UsingPost()
@@ -47,10 +49,11 @@ public partial class WireMockServerTests
                 Request.Create()
                     .WithPath("/a")
                     .WithBody(
-                        [
+                        new IMatcher[]
+                        {
                             new JmesPathMatcher("requestId == '2'"),
                             new JmesPathMatcher("value == 'A'")
-                        ],
+                        },
                         MatchOperator.And
                     )
                     .UsingPost()
@@ -78,11 +81,12 @@ public partial class WireMockServerTests
                 Request.Create()
                     .WithPath("/a")
                     .WithBody(
-                        [
+                        new IMatcher[]
+                        {
                             new JmesPathMatcher("extra == 'X'"),
                             new JmesPathMatcher("requestId == '1'"),
                             new JmesPathMatcher("value == 'A'")
-                        ],
+                        },
                         MatchOperator.And
                     )
                     .UsingPost()
@@ -94,10 +98,11 @@ public partial class WireMockServerTests
                 Request.Create()
                     .WithPath("/a")
                     .WithBody(
-                        [
+                        new IMatcher[]
+                        {
                             new JmesPathMatcher("requestId == '1'"),
                             new JmesPathMatcher("value == 'A'")
-                        ],
+                        },
                         MatchOperator.And
                     )
                     .UsingPost()
@@ -183,7 +188,6 @@ public partial class WireMockServerTests
                       {"jsonrpc":"2.0","id":"{{request.bodyAsJson.id}}","result":{"protocolVersion":"2024-11-05","capabilities":{"logging":{},"prompts":{"listChanged":true},"resources":{"subscribe":true,"listChanged":true},"tools":{"listChanged":true}},"serverInfo":{"name":"ExampleServer","version":"1.0.0"}}}
                       """)
             .WithStatusCode(200)
-            .WithTransformer(true)
         );
 
         // Act
@@ -195,47 +199,15 @@ public partial class WireMockServerTests
         // Assert
         response.StatusCode.Should().Be(HttpStatusCode.OK);
 
-        var responseText = await response.Content.ReadAsStringAsync();
+        var responseText = await response.RequestMessage!.Content!.ReadAsStringAsync();
         responseText.Should().Contain("ec475f56d4694b48bc737500ba575b35-1");
     }
 
-#if NET6_0_OR_GREATER
-    [Fact]
-    public async Task WireMockServer_WithBodyAsJson_Using_PostAsync_And_JsonPartialWildcardMatcher_And_SystemTextJson_ShouldMatch()
-    {
-        // Arrange
-        using var server = WireMockServer.Start(x => x.DefaultJsonSerializer = new JsonConverter.System.Text.Json.SystemTextJsonConverter() );
-
-        var matcher = new JsonPartialWildcardMatcher(new { id = "^[a-f0-9]{32}-[0-9]$" }, ignoreCase: true, regex: true);
-        server.Given(Request.Create()
-            .WithHeader("Content-Type", "application/json*")
-            .UsingPost()
-            .WithPath("/system-text-json")
-            .WithBody(matcher)
-        )
-        .RespondWith(Response.Create()
-            .WithBody("OK")
-        );
-
-        // Act
-        var content = """{"id":"ec475f56d4694b48bc737500ba575b35-1"}""";
-        var response = await new HttpClient()
-            .PostAsync($"{server.Url}/system-text-json", new StringContent(content, Encoding.UTF8, "application/json"))
-            .ConfigureAwait(false);
-
-        // Assert
-        response.StatusCode.Should().Be(HttpStatusCode.OK);
-
-        var responseText = await response.Content.ReadAsStringAsync();
-        responseText.Should().Contain("OK");
-    }
-#endif
-
     [Fact]
     public async Task WireMockServer_WithBodyAsFormUrlEncoded_Using_PostAsync_And_WithFunc()
     {
         // Arrange
-        using var server = WireMockServer.Start();
+        var server = WireMockServer.Start();
         server.Given(
             Request.Create()
                 .UsingPost()
@@ -247,7 +219,7 @@ public partial class WireMockServerTests
             );
 
         // Act
-        var content = new FormUrlEncodedContent([new KeyValuePair<string, string>("key1", "value1")]);
+        var content = new FormUrlEncodedContent(new[] { new KeyValuePair<string, string>("key1", "value1") });
         var response = await new HttpClient()
             .PostAsync($"{server.Url}/foo", content)
             .ConfigureAwait(false);