1.0.4.16

* #201

* Handlebars : Linq and JsonPath

* Rename to Regex.Match

* unit test coverage

CHANGELOG.md

@@ -1,3 +1,19 @@
+# 1.0.4.16 (11 September 2018)
+
+ - [#202](https://github.com/WireMock-Net/WireMock.Net/pull/202) - Update handlebars code to support Regex.Match (#201) contributed by Stef Heyenrath ([StefH](https://github.com/StefH))
+ - [#201](https://github.com/WireMock-Net/WireMock.Net/issues/201) - Question : Extracting text from a request.body that is not json
+
+Commits: f3c395833a...da64934c13
+
+
+# 1.0.4.15 (04 September 2018)
+
+ - [#199](https://github.com/WireMock-Net/WireMock.Net/pull/199) - Fix for .WithBody(Func<RequestMessage, string>...) contributed by Stef Heyenrath ([StefH](https://github.com/StefH))
+ - [#198](https://github.com/WireMock-Net/WireMock.Net/issues/198) - Issue : creating response using .WithBody(Func<RequestMessage, string>...) and .WithStatusCode +fix
+
+Commits: 41fd1ef99d...41fd1ef99d
+
+
 # 1.0.4.14 (02 September 2018)
 
  - [#197](https://github.com/WireMock-Net/WireMock.Net/pull/197) - Set IsStarted = true in a IApplicationLifetime.ApplicationStarted listener contributed by ([davide-romanini](https://github.com/davide-romanini)) +fix

GitReleaseNotes.txt

@@ -1,5 +1,5 @@
 https://github.com/GitTools/GitReleaseNotes
 
-GitReleaseNotes.exe . /OutputFile CHANGELOG.md /Version 1.0.4.14
+GitReleaseNotes.exe . /OutputFile CHANGELOG.md /Version 1.0.4.16
 
 GitReleaseNotes.exe . /OutputFile CHANGELOG.md /allTags

examples/WireMock.Net.Console.Net452.Classic/MainApp.cs

@@ -358,6 +358,20 @@ namespace WireMock.Net.ConsoleApplication
                     .WithBody("linq match !!!")
                 );
 
+            server
+                .Given(Request.Create().WithPath("/myendpoint").UsingAnyMethod())
+                .RespondWith(Response.Create()
+                    .WithStatusCode(500)
+                    .WithBody(requestMessage =>
+                    {
+                        string returnStr = JsonConvert.SerializeObject(new
+                        {
+                            Message = "Test error"
+                        });
+                        return returnStr;
+                    })
+                );
+
             System.Console.WriteLine("Press any key to stop the server");
             System.Console.ReadKey();
             server.Stop();

src/WireMock.Net.StandAlone/WireMock.Net.StandAlone.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <Description>Lightweight StandAlone Http Mocking Server for .Net.</Description>
     <AssemblyTitle>WireMock.Net.StandAlone</AssemblyTitle>
-    <Version>1.0.4.14</Version>
+    <Version>1.0.4.16</Version>
     <Authors>Stef Heyenrath</Authors>
     <TargetFrameworks>net451;net452;net46;netstandard1.3;netstandard2.0</TargetFrameworks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>

src/WireMock.Net/Matchers/LinqMatcher.cs

@@ -1,6 +1,8 @@
 using System.Linq;
 using System.Linq.Dynamic.Core;
 using JetBrains.Annotations;
+using Newtonsoft.Json.Linq;
+using WireMock.Util;
 
 namespace WireMock.Matchers
 {
@@ -63,29 +65,35 @@ namespace WireMock.Matchers
             return MatchBehaviourHelper.Convert(MatchBehaviour, match);
         }
 
-        ///// <inheritdoc cref="IObjectMatcher.IsMatch"/>
-        //public double IsMatch(object input)
-        //{
-        //    object value;
-        //    switch (input)
-        //    {
-        //        case JObject valueAsJObject:
-        //            value = valueAsJObject.ToObject<object>();
-        //            break;
+        /// <inheritdoc cref="IObjectMatcher.IsMatch"/>
+        public double IsMatch(object input)
+        {
+            JObject value;
+            switch (input)
+            {
+                case JObject valueAsJObject:
+                    value = valueAsJObject;
+                    break;
 
-        //        default:
-        //            value = input;
-        //            break;
-        //    }
+                default:
+                    value = JObject.FromObject(input);
+                    break;
+            }
 
-        //    // Convert a single object to a Queryable object-list with 1 entry.
-        //    IQueryable queryable = new[] { value }.AsQueryable().Select("new (it as x)");
+            // Convert a single object to a Queryable JObject-list with 1 entry.
+            var queryable1 = new[] { value }.AsQueryable();
 
-        //    // Use the Any(...) method to check if the result matches
-        //    double match = MatchScores.ToScore(_patterns.Select(pattern => queryable.Any(pattern)));
+            // Generate the DynamicLinq select statement.
+            string dynamicSelect = JsonUtils.GenerateDynamicLinqStatement(value);
 
-        //    return MatchBehaviourHelper.Convert(MatchBehaviour, match);
-        //}
+            // Execute DynamicLinq Select statement.
+            var queryable2 = queryable1.Select(dynamicSelect);
+
+            // Use the Any(...) method to check if the result matches.
+            double match = MatchScores.ToScore(_patterns.Select(pattern => queryable2.Any(pattern)));
+
+            return MatchBehaviourHelper.Convert(MatchBehaviour, match);
+        }
 
         /// <inheritdoc cref="IStringMatcher.GetPatterns"/>
         public string[] GetPatterns()

src/WireMock.Net/Owin/AspNetCoreSelfHost.cs

@@ -7,9 +7,9 @@ using System.Threading.Tasks;
 using JetBrains.Annotations;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
-using WireMock.Http;
 using WireMock.HttpsCertificate;
 using WireMock.Logging;
+using WireMock.Util;
 using WireMock.Validation;
 
 namespace WireMock.Owin
@@ -43,7 +43,7 @@ namespace WireMock.Owin
             {
                 Urls.Add(uriPrefix);
 
-                PortUtil.TryExtractProtocolAndPort(uriPrefix, out string host, out int port);
+                PortUtils.TryExtractProtocolAndPort(uriPrefix, out string host, out int port);
                 Ports.Add(port);
             }
 
@@ -75,13 +75,13 @@ namespace WireMock.Owin
                     // https://docs.microsoft.com/en-us/aspnet/core/fundamentals/servers/kestrel?tabs=aspnetcore2x
                     foreach (string url in _urls.Where(u => u.StartsWith("http://", StringComparison.OrdinalIgnoreCase)))
                     {
-                        PortUtil.TryExtractProtocolAndPort(url, out string host, out int port);
+                        PortUtils.TryExtractProtocolAndPort(url, out string host, out int port);
                         options.Listen(System.Net.IPAddress.Any, port);
                     }
 
                     foreach (string url in _urls.Where(u => u.StartsWith("https://", StringComparison.OrdinalIgnoreCase)))
                     {
-                        PortUtil.TryExtractProtocolAndPort(url, out string host, out int port);
+                        PortUtils.TryExtractProtocolAndPort(url, out string host, out int port);
                         options.Listen(System.Net.IPAddress.Any, port, listenOptions =>
                         {
                             listenOptions.UseHttps(PublicCertificateHelper.GetX509Certificate2());

src/WireMock.Net/Owin/OwinSelfHost.cs

@@ -8,6 +8,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using WireMock.Http;
 using WireMock.Logging;
+using WireMock.Util;
 using WireMock.Validation;
 
 namespace WireMock.Owin
@@ -30,7 +31,7 @@ namespace WireMock.Owin
             {
                 Urls.Add(uriPrefix);
 
-                PortUtil.TryExtractProtocolAndPort(uriPrefix, out string host, out int port);
+                PortUtils.TryExtractProtocolAndPort(uriPrefix, out string host, out int port);
                 Ports.Add(port);
             }
 

src/WireMock.Net/ResponseBuilders/Response.cs

@@ -169,7 +169,14 @@ namespace WireMock.ResponseBuilders
         /// <inheritdoc cref="IBodyResponseBuilder.WithBody(Func{RequestMessage, string}, string, Encoding)"/>
         public IResponseBuilder WithBody(Func<RequestMessage, string> bodyFactory, string destination = BodyDestinationFormat.SameAsSource, Encoding encoding = null)
         {
-            return WithCallback(req => new ResponseMessage { Body = bodyFactory(req) });
+            Check.NotNull(bodyFactory, nameof(bodyFactory));
+
+            return WithCallback(req => new ResponseMessage
+            {
+                Body = bodyFactory(req),
+                BodyDestination = destination,
+                BodyEncoding = encoding ?? Encoding.UTF8
+            });
         }
 
         /// <inheritdoc cref="IBodyResponseBuilder.WithBody(byte[], string, Encoding)"/>
@@ -353,6 +360,22 @@ namespace WireMock.ResponseBuilders
                 await Task.Delay(Delay.Value);
             }
 
+            if (Callback != null)
+            {
+                var callbackResponseMessage = Callback(requestMessage);
+
+                // Copy StatusCode from ResponseMessage
+                callbackResponseMessage.StatusCode = ResponseMessage.StatusCode;
+
+                // Copy Headers from ResponseMessage (if defined)
+                if (ResponseMessage.Headers != null)
+                {
+                    callbackResponseMessage.Headers = ResponseMessage.Headers;
+                }
+
+                return callbackResponseMessage;
+            }
+
             if (ProxyUrl != null && _httpClientForProxy != null)
             {
                 var requestUri = new Uri(requestMessage.Url);
@@ -367,11 +390,7 @@ namespace WireMock.ResponseBuilders
                 return ResponseMessageTransformer.Transform(requestMessage, ResponseMessage);
             }
 
-            if (Callback != null)
-            {
-                return Callback(requestMessage);
-            }
-
+            // Just return normal defined ResponseMessage
             return ResponseMessage;
         }
     }

src/WireMock.Net/Server/FluentMockServer.cs

@@ -16,6 +16,7 @@ using WireMock.Owin;
 using WireMock.RequestBuilders;
 using WireMock.ResponseProviders;
 using WireMock.Settings;
+using WireMock.Util;
 using WireMock.Validation;
 
 namespace WireMock.Server
@@ -199,7 +200,7 @@ namespace WireMock.Server
             }
             else
             {
-                int port = settings.Port > 0 ? settings.Port.Value : PortUtil.FindFreeTcpPort();
+                int port = settings.Port > 0 ? settings.Port.Value : PortUtils.FindFreeTcpPort();
                 Urls = new[] { $"{(settings.UseSSL == true ? "https" : "http")}://localhost:{port}" };
             }
 

src/WireMock.Net/Transformers/HandleBarsHelpers.cs

@@ -1,89 +1,14 @@
-using System;
-using System.Collections.Generic;
-using HandlebarsDotNet;
-using Newtonsoft.Json;
-using Newtonsoft.Json.Linq;
-using WireMock.Validation;
-
-namespace WireMock.Transformers
+namespace WireMock.Transformers
 {
     internal static class HandlebarsHelpers
     {
         public static void Register()
         {
-            Handlebars.RegisterHelper("JsonPath.SelectToken", (writer, context, arguments) =>
-            {
-                (JObject valueToProcess, string jsonpath) = Parse(arguments);
+            HandleBarsRegex.Register();
 
-                JToken result = null;
-                try
-                {
-                    result = valueToProcess.SelectToken(jsonpath);
-                }
-                catch (JsonException)
-                {
-                    // Ignore JsonException and return
-                    return;
-                }
+            HandleBarsJsonPath.Register();
 
-                if (result != null)
-                {
-                    writer.WriteSafeString(result);
-                }
-            });
-
-            Handlebars.RegisterHelper("JsonPath.SelectTokens", (writer, options, context, arguments) =>
-            {
-                (JObject valueToProcess, string jsonpath) = Parse(arguments);
-
-                IEnumerable<JToken> values = null;
-                try
-                {
-                    values = valueToProcess.SelectTokens(jsonpath);
-                }
-                catch (JsonException)
-                {
-                    // Ignore JsonException and return
-                    return;
-                }
-
-                if (values == null)
-                {
-                    return;
-                }
-
-                int id = 0;
-                foreach (JToken value in values)
-                {
-                    options.Template(writer, new { id, value });
-                    id++;
-                }
-            });
-        }
-
-        private static (JObject valueToProcess, string jsonpath) Parse(object[] arguments)
-        {
-            Check.Condition(arguments, args => args.Length == 2, nameof(arguments));
-            Check.NotNull(arguments[0], "arguments[0]");
-            Check.NotNullOrEmpty(arguments[1] as string, "arguments[1]");
-
-            JObject valueToProcess;
-
-            switch (arguments[0])
-            {
-                case string jsonAsString:
-                    valueToProcess = JObject.Parse(jsonAsString);
-                    break;
-
-                case JObject jsonAsJObject:
-                    valueToProcess = jsonAsJObject;
-                    break;
-
-                default:
-                    throw new NotSupportedException($"The value '{arguments[0]}' with type {arguments[0].GetType()} cannot be used in Handlebars JsonPath.");
-            }
-
-            return (valueToProcess, arguments[1] as string);
+            HandleBarsLinq.Register();
         }
     }
 }

src/WireMock.Net/Transformers/HandleBarsJsonPath.cs

@@ -0,0 +1,75 @@
+using System;
+using System.Linq;
+using HandlebarsDotNet;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using WireMock.Validation;
+
+namespace WireMock.Transformers
+{
+    internal static class HandleBarsJsonPath
+    {
+        public static void Register()
+        {
+            Handlebars.RegisterHelper("JsonPath.SelectToken", (writer, context, arguments) =>
+            {
+                (JObject valueToProcess, string jsonpath) = ParseArguments(arguments);
+
+                try
+                {
+                    var result = valueToProcess.SelectToken(jsonpath);
+                    writer.WriteSafeString(result);
+                }
+                catch (JsonException)
+                {
+                    // Ignore JsonException and return
+                    return;
+                }
+            });
+
+            Handlebars.RegisterHelper("JsonPath.SelectTokens", (writer, options, context, arguments) =>
+            {
+                (JObject valueToProcess, string jsonpath) = ParseArguments(arguments);
+
+                try
+                {
+                    var values = valueToProcess.SelectTokens(jsonpath);
+                    if (values != null)
+                    {
+                        options.Template(writer, values.ToDictionary(value => value.Path, value => value));
+                    }
+                }
+                catch (JsonException)
+                {
+                    // Ignore JsonException and return
+                    return;
+                }
+            });
+        }
+
+        private static (JObject valueToProcess, string jsonpath) ParseArguments(object[] arguments)
+        {
+            Check.Condition(arguments, args => args.Length == 2, nameof(arguments));
+            Check.NotNull(arguments[0], "arguments[0]");
+            Check.NotNullOrEmpty(arguments[1] as string, "arguments[1]");
+
+            JObject valueToProcess;
+
+            switch (arguments[0])
+            {
+                case string jsonAsString:
+                    valueToProcess = JObject.Parse(jsonAsString);
+                    break;
+
+                case JObject jsonAsJObject:
+                    valueToProcess = jsonAsJObject;
+                    break;
+
+                default:
+                    throw new NotSupportedException($"The value '{arguments[0]}' with type '{arguments[0]?.GetType()}' cannot be used in Handlebars JsonPath.");
+            }
+
+            return (valueToProcess, arguments[1] as string);
+        }
+    }
+}

src/WireMock.Net/Transformers/HandleBarsLinq.cs

@@ -0,0 +1,88 @@
+using System;
+using System.Linq;
+using System.Linq.Dynamic.Core;
+using System.Linq.Dynamic.Core.Exceptions;
+using HandlebarsDotNet;
+using Newtonsoft.Json.Linq;
+using WireMock.Util;
+using WireMock.Validation;
+
+namespace WireMock.Transformers
+{
+    internal static class HandleBarsLinq
+    {
+        public static void Register()
+        {
+            Handlebars.RegisterHelper("Linq", (writer, context, arguments) =>
+            {
+                (JToken valueToProcess, string linqStatement) = ParseArguments(arguments);
+
+                try
+                {
+                    object result = ExecuteDynamicLinq(valueToProcess, linqStatement);
+                    writer.WriteSafeString(result);
+                }
+                catch (ParseException)
+                {
+                    // Ignore ParseException and return
+                    return;
+                }
+            });
+
+            Handlebars.RegisterHelper("Linq", (writer, options, context, arguments) =>
+            {
+                (JToken valueToProcess, string linqStatement) = ParseArguments(arguments);
+
+                try
+                {
+                    var result = ExecuteDynamicLinq(valueToProcess, linqStatement);
+                    options.Template(writer, result);
+                }
+                catch (ParseException)
+                {
+                    // Ignore ParseException and return
+                    return;
+                }
+            });
+        }
+
+        private static dynamic ExecuteDynamicLinq(JToken value, string linqStatement)
+        {
+            // Convert a single object to a Queryable JObject-list with 1 entry.
+            var queryable1 = new[] { value }.AsQueryable();
+
+            // Generate the DynamicLinq select statement.
+            string dynamicSelect = JsonUtils.GenerateDynamicLinqStatement(value);
+
+            // Execute DynamicLinq Select statement.
+            var queryable2 = queryable1.Select(dynamicSelect);
+
+            // Execute the Select(...) method and get first result with FirstOrDefault().
+            return queryable2.Select(linqStatement).FirstOrDefault();
+        }
+
+        private static (JToken valueToProcess, string linqStatement) ParseArguments(object[] arguments)
+        {
+            Check.Condition(arguments, args => args.Length == 2, nameof(arguments));
+            Check.NotNull(arguments[0], "arguments[0]");
+            Check.NotNullOrEmpty(arguments[1] as string, "arguments[1]");
+
+            JToken valueToProcess;
+            switch (arguments[0])
+            {
+                case string jsonAsString:
+                    valueToProcess = new JValue(jsonAsString);
+                    break;
+
+                case JToken jsonAsJObject:
+                    valueToProcess = jsonAsJObject;
+                    break;
+
+                default:
+                    throw new NotSupportedException($"The value '{arguments[0]}' with type '{arguments[0]?.GetType()}' cannot be used in Handlebars Linq.");
+            }
+
+            return (valueToProcess, arguments[1] as string);
+        }
+    }
+}

src/WireMock.Net/Transformers/HandleBarsRegex.cs

@@ -0,0 +1,66 @@
+using System;
+using System.Linq;
+using System.Text.RegularExpressions;
+using HandlebarsDotNet;
+using WireMock.Utils;
+using WireMock.Validation;
+
+namespace WireMock.Transformers
+{
+    internal static class HandleBarsRegex
+    {
+        public static void Register()
+        {
+            Handlebars.RegisterHelper("Regex.Match", (writer, context, arguments) =>
+            {
+                (string stringToProcess, string regexPattern, object defaultValue) = ParseArguments(arguments);
+
+                Match match = Regex.Match(stringToProcess, regexPattern);
+
+                if (match.Success)
+                {
+                    writer.WriteSafeString(match.Value);
+                }
+                else if (defaultValue != null)
+                {
+                    writer.WriteSafeString(defaultValue);
+                }
+            });
+
+            Handlebars.RegisterHelper("Regex.Match", (writer, options, context, arguments) =>
+            {
+                (string stringToProcess, string regexPattern, object defaultValue) = ParseArguments(arguments);
+
+                var regex = new Regex(regexPattern);
+                var namedGroups = RegexUtils.GetNamedGroups(regex, stringToProcess);
+                if (namedGroups.Any())
+                {
+                    options.Template(writer, namedGroups);
+                }
+                else if (defaultValue != null)
+                {
+                    options.Template(writer, defaultValue);
+                }
+            });
+        }
+
+        private static (string stringToProcess, string regexPattern, object defaultValue) ParseArguments(object[] arguments)
+        {
+            Check.Condition(arguments, args => args.Length == 2 || args.Length == 3, nameof(arguments));
+
+            string ParseAsString(object arg)
+            {
+                if (arg is string)
+                {
+                    return arg as string;
+                }
+                else
+                {
+                    throw new NotSupportedException($"The value '{arg}' with type '{arg?.GetType()}' cannot be used in Handlebars Regex.");
+                }
+            }
+
+            return (ParseAsString(arguments[0]), ParseAsString(arguments[1]), arguments.Length == 3 ? arguments[2] : null);
+        }
+    }
+}

src/WireMock.Net/Util/IndexableDictionary.cs

@@ -0,0 +1,26 @@
+using System.Collections.Generic;
+using System.Linq;
+
+namespace WireMock.Util
+{
+    public class IndexableDictionary<TKey, TValue> : Dictionary<TKey, TValue>
+    {
+        /// <summary>
+        /// Gets the value associated with the specified index.
+        /// </summary>
+        /// <param name="index"> The index of the value to get.</param>
+        /// <returns>The value associated with the specified index.</returns>
+        public TValue this[int index]
+        {
+            get
+            {
+                // get the item for that index.
+                if (index < 0 || index > Count)
+                {
+                    throw new KeyNotFoundException();
+                }
+                return Values.Cast<TValue>().ToArray()[index];
+            }
+        }
+    }
+}

src/WireMock.Net/Util/JsonUtils.cs

@@ -1,4 +1,8 @@
 using Newtonsoft.Json.Linq;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
 
 namespace WireMock.Util
 {
@@ -6,12 +10,138 @@ namespace WireMock.Util
     {
         public static T ParseJTokenToObject<T>(object value)
         {
-            if (value == null)
+            switch (value)
             {
-                return default(T);
+                case JToken tokenValue:
+                    return tokenValue.ToObject<T>();
+
+                default:
+                    return default(T);
+            }
+        }
+
+        public static string GenerateDynamicLinqStatement(JToken jsonObject)
+        {
+            var lines = new List<string>();
+            WalkNode(jsonObject, null, null, lines);
+
+            return lines.First();
+        }
+
+        private static void WalkNode(JToken node, string path, string propertyName, List<string> lines)
+        {
+            if (node.Type == JTokenType.Object)
+            {
+                ProcessObject(node, propertyName, lines);
+            }
+            else if (node.Type == JTokenType.Array)
+            {
+                ProcessArray(node, propertyName, lines);
+            }
+            else
+            {
+                ProcessItem(node, path ?? "it", propertyName, lines);
+            }
+        }
+
+        private static void ProcessObject(JToken node, string propertyName, List<string> lines)
+        {
+            var items = new List<string>();
+            var text = new StringBuilder("new (");
+
+            // In case of Object, loop all children. Do a ToArray() to avoid `Collection was modified` exceptions.
+            foreach (JProperty child in node.Children<JProperty>().ToArray())
+            {
+                WalkNode(child.Value, child.Path, child.Name, items);
             }
 
-            return !(value is JToken token) ? default(T) : token.ToObject<T>();
+            text.Append(string.Join(", ", items));
+            text.Append(")");
+
+            if (!string.IsNullOrEmpty(propertyName))
+            {
+                text.AppendFormat(" as {0}", propertyName);
+            }
+
+            lines.Add(text.ToString());
+        }
+
+        private static void ProcessArray(JToken node, string propertyName, List<string> lines)
+        {
+            var items = new List<string>();
+            var text = new StringBuilder("(new [] { ");
+
+            // In case of Array, loop all items. Do a ToArray() to avoid `Collection was modified` exceptions.
+            int idx = 0;
+            foreach (JToken child in node.Children().ToArray())
+            {
+                WalkNode(child, $"{node.Path}[{idx}]", null, items);
+                idx++;
+            }
+
+            text.Append(string.Join(", ", items));
+            text.Append("})");
+
+            if (!string.IsNullOrEmpty(propertyName))
+            {
+                text.AppendFormat(" as {0}", propertyName);
+            }
+
+            lines.Add(text.ToString());
+        }
+
+        private static void ProcessItem(JToken node, string path, string propertyName, List<string> lines)
+        {
+            string castText = string.Empty;
+            switch (node.Type)
+            {
+                case JTokenType.Boolean:
+                    castText = $"bool({path})";
+                    break;
+
+                case JTokenType.Date:
+                    castText = $"DateTime({path})";
+                    break;
+
+                case JTokenType.Float:
+                    castText = $"double({path})";
+                    break;
+
+                case JTokenType.Guid:
+                    castText = $"Guid({path})";
+                    break;
+
+                case JTokenType.Integer:
+                    castText = $"int({path})";
+                    break;
+
+                case JTokenType.Null:
+                    castText = "null";
+                    break;
+
+                case JTokenType.String:
+                    castText = $"string({path})";
+                    break;
+
+                case JTokenType.TimeSpan:
+                    castText = $"TimeSpan({path})";
+                    break;
+
+                case JTokenType.Uri:
+                    castText = $"Uri({path})";
+                    break;
+
+                default:
+                    throw new NotSupportedException(
+                        $"JTokenType '{node.Type}' cannot be converted to a Dynamic Linq cast operator.");
+            }
+
+            if (!string.IsNullOrEmpty(propertyName))
+            {
+                castText += $" as {propertyName}";
+            }
+
+            lines.Add(castText);
         }
     }
 }

src/WireMock.Net/Util/PortUtils.cs

@@ -2,12 +2,12 @@
 using System.Net.Sockets;
 using System.Text.RegularExpressions;
 
-namespace WireMock.Http
+namespace WireMock.Util
 {
     /// <summary>
     /// Port Utility class
     /// </summary>
-    public static class PortUtil
+    public static class PortUtils
     {
         private static readonly Regex UrlDetailsRegex = new Regex(@"^(?<proto>\w+)://[^/]+?(?<port>\d+)/?", RegexOptions.Compiled);
 

src/WireMock.Net/Util/RegexUtils.cs

@@ -0,0 +1,24 @@
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+
+namespace WireMock.Utils
+{
+    internal static class RegexUtils
+    {
+        public static Dictionary<string, string> GetNamedGroups(Regex regex, string input)
+        {
+            var namedGroupsDictionary = new Dictionary<string, string>();
+
+            GroupCollection groups = regex.Match(input).Groups;
+            foreach (string groupName in regex.GetGroupNames())
+            {
+                if (groups[groupName].Captures.Count > 0)
+                {
+                    namedGroupsDictionary.Add(groupName, groups[groupName].Value);
+                }
+            }
+
+            return namedGroupsDictionary;
+        }
+    }
+}

src/WireMock.Net/WireMock.Net.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <Description>Lightweight Http Mocking Server for .Net, inspired by WireMock from the Java landscape.</Description>
     <AssemblyTitle>WireMock.Net</AssemblyTitle>
-    <Version>1.0.4.14</Version>
+    <Version>1.0.4.16</Version>
     <Authors>Stef Heyenrath</Authors>
     <TargetFrameworks>net451;net452;net46;net461;netstandard1.3;netstandard2.0</TargetFrameworks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
@@ -37,6 +37,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <Compile Remove="Util\IndexableDictionary.cs" />
     <Compile Remove="Util\NamedReaderWriterLocker.cs" />
   </ItemGroup>
 
@@ -49,7 +50,7 @@
     <PackageReference Include="System.Net.Http" Version="4.3.3" />
     <PackageReference Include="RestEase" Version="1.4.4" />
     <PackageReference Include="MimeKitLite" Version="2.0.1" />
-    <PackageReference Include="System.Linq.Dynamic.Core" Version="1.0.8.17" />
+    <PackageReference Include="System.Linq.Dynamic.Core" Version="1.0.8.18" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net451' ">

test/WireMock.Net.Tests/FluentMockServerTests.Admin.cs

@@ -48,15 +48,15 @@ namespace WireMock.Net.Tests
         [Fact]
         public void FluentMockServer_Admin_StartStop()
         {
-            var server1 = FluentMockServer.Start("http://localhost:9091");
+            var server1 = FluentMockServer.Start("http://localhost:19091");
 
-            Check.That(server1.Urls[0]).Equals("http://localhost:9091");
+            Check.That(server1.Urls[0]).Equals("http://localhost:19091");
 
             server1.Stop();
 
-            var server2 = FluentMockServer.Start("http://localhost:9091/");
+            var server2 = FluentMockServer.Start("http://localhost:19091/");
 
-            Check.That(server2.Urls[0]).Equals("http://localhost:9091/");
+            Check.That(server2.Urls[0]).Equals("http://localhost:19091/");
 
             server2.Stop();
         }

test/WireMock.Net.Tests/FluentMockServerTests.cs

@@ -106,7 +106,7 @@ namespace WireMock.Net.Tests
         [Fact]
         public async Task FluentMockServer_Should_respond_to_request_bodyAsCallback()
         {
-            // given
+            // Assign
             var _server = FluentMockServer.Start();
 
             _server
@@ -114,14 +114,18 @@ namespace WireMock.Net.Tests
                     .WithPath("/foo")
                     .UsingGet())
                 .RespondWith(Response.Create()
-                    .WithStatusCode(200)
-                    .WithBody(req => $"{{ path: '{req.Path}' }}"));
+                    .WithStatusCode(500)
+                    .WithHeader("H1", "X1")
+                    .WithBody(req => $"path: {req.Path}"));
 
-            // when
-            var response = await new HttpClient().GetStringAsync("http://localhost:" + _server.Ports[0] + "/foo");
+            // Act
+            var response = await new HttpClient().GetAsync("http://localhost:" + _server.Ports[0] + "/foo");
 
-            // then
-            Check.That(response).IsEqualTo("{ path: '/foo' }");
+            // Assert
+            string content = await response.Content.ReadAsStringAsync();
+            Check.That(content).IsEqualTo("path: /foo");
+            Check.That((int) response.StatusCode).IsEqualTo(500);
+            Check.That(response.Headers.GetValues("H1")).ContainsExactly("X1");
         }
 
         [Fact]

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

@@ -1,4 +1,5 @@
-using NFluent;
+using Newtonsoft.Json.Linq;
+using NFluent;
 using WireMock.Matchers;
 using Xunit;
 
@@ -45,43 +46,41 @@ namespace WireMock.Net.Tests.Matchers
             Check.That(matcher.IsMatch(input)).IsEqualTo(0.0d);
         }
 
-        //[Fact]
-        //public void LinqMatcher_For_Object_IsMatch()
-        //{
-        //    // Assign
-        //    var input = new
-        //    {
-        //        Id = 9,
-        //        Name = "Test"
-        //    };
+        [Fact]
+        public void LinqMatcher_For_Object_IsMatch()
+        {
+            // Assign
+            var input = new
+            {
+                Id = 9,
+                Name = "Test"
+            };
 
-        //    // Act
-        //    var matcher = new LinqMatcher("Id > 1 AND Name == \"Test\"");
+            // Act
+            var matcher = new LinqMatcher("Id > 1 AND Name == \"Test\"");
+            double match = matcher.IsMatch(input);
 
-        //    double match = matcher.IsMatch(input);
+            // Assert
+            Assert.Equal(1.0, match);
+        }
 
-        //    // Assert
-        //    Assert.Equal(1.0, match);
-        //}
+        [Fact]
+        public void LinqMatcher_For_JObject_IsMatch()
+        {
+            // Assign
+            var input = new JObject
+            {
+                { "Id", new JValue(9) },
+                { "Name", new JValue("Test") }
+            };
 
-        //[Fact]
-        //public void LinqMatcher_For_JObject_IsMatch()
-        //{
-        //    // Assign
-        //    var input = new JObject
-        //    {
-        //        { "Id", new JValue(9) },
-        //        { "Name", new JValue("Test") }
-        //    };
+            // Act
+            var matcher = new LinqMatcher("Id > 1 AND Name == \"Test\"");
+            double match = matcher.IsMatch(input);
 
-        //    // Act
-        //    var matcher = new LinqMatcher("it.Id > 1 AND it.Name == \"Test\"");
-
-        //    double match = matcher.IsMatch(input);
-
-        //    // Assert
-        //    Assert.Equal(1.0, match);
-        //}
+            // Assert
+            Assert.Equal(1.0, match);
+        }
 
         [Fact]
         public void LinqMatcher_GetName()

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

@@ -1,5 +1,4 @@
-using System;
-using System.Text;
+using System.Text;
 using System.Threading.Tasks;
 using NFluent;
 using WireMock.Models;
@@ -150,5 +149,30 @@ namespace WireMock.Net.Tests.ResponseBuilderTests
             Check.That(((dynamic)responseMessage.BodyAsJson).value).Equals(42);
             Check.That(responseMessage.BodyEncoding).Equals(Encoding.ASCII);
         }
+
+        [Fact]
+        public async Task Response_ProvideResponse_WithBody_Func()
+        {
+            // Assign
+            var request = new RequestMessage(new UrlDetails("http://localhost/test"), "GET", ClientIp);
+
+            var response = Response.Create()
+                .WithStatusCode(500)
+                .WithHeader("H1", "X1")
+                .WithHeader("H2", "X2")
+                .WithBody(req => $"path: {req.Path}");
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // Assert
+            Check.That(responseMessage.Body).IsEqualTo("path: /test");
+            Check.That(responseMessage.BodyAsBytes).IsNull();
+            Check.That(responseMessage.BodyAsJson).IsNull();
+            Check.That(responseMessage.BodyEncoding.CodePage).Equals(Encoding.UTF8.CodePage);
+            Check.That(responseMessage.StatusCode).IsEqualTo(500);
+            Check.That(responseMessage.Headers["H1"].ToString()).IsEqualTo("X1");
+            Check.That(responseMessage.Headers["H2"].ToString()).IsEqualTo("X2");
+        }
     }
 }

test/WireMock.Net.Tests/ResponseBuilderTests/ResponseWithHandlebarsJsonPathTests.cs

@@ -0,0 +1,324 @@
+using System;
+using System.Threading.Tasks;
+using Newtonsoft.Json.Linq;
+using NFluent;
+using WireMock.Models;
+using WireMock.ResponseBuilders;
+using WireMock.Util;
+using Xunit;
+
+namespace WireMock.Net.Tests.ResponseBuilderTests
+{
+    public class ResponseWithHandlebarsJsonPathTests
+    {
+        private const string ClientIp = "::1";
+
+        [Fact]
+        public async Task Response_ProvideResponse_Handlebars_JsonPath_SelectToken_Object_ResponseBodyAsJson()
+        {
+            // Assign
+            var body = new BodyData
+            {
+                BodyAsString = @"{
+                  ""Stores"": [
+                    ""Lambton Quay"",
+                    ""Willis Street""
+                  ],
+                  ""Manufacturers"": [
+                    {
+                      ""Name"": ""Acme Co"",
+                      ""Products"": [
+                        {
+                          ""Name"": ""Anvil"",
+                          ""Price"": 50
+                        }
+                      ]
+                    },
+                    {
+                      ""Name"": ""Contoso"",
+                      ""Products"": [
+                        {
+                          ""Name"": ""Elbow Grease"",
+                          ""Price"": 99.95
+                        },
+                        {
+                          ""Name"": ""Headlight Fluid"",
+                          ""Price"": 4
+                        }
+                      ]
+                    }
+                  ]
+                }"
+            };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithHeader("Content-Type", "application/json")
+                .WithBodyAsJson(new { x = "{{JsonPath.SelectToken request.body \"$.Manufacturers[?(@.Name == 'Acme Co')]\"}}" })
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // Assert
+            JObject j = JObject.FromObject(responseMessage.BodyAsJson);
+            Check.That(j["x"]).IsNotNull();
+            Check.That(j["x"]["Name"].ToString()).Equals("Acme Co");
+        }
+
+        [Fact]
+        public async Task Response_ProvideResponse_Handlebars_JsonPath_SelectToken_Number_ResponseBodyAsJson()
+        {
+            // Assign
+            var body = new BodyData { BodyAsString = "{ \"Price\": 99 }" };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithHeader("Content-Type", "application/json")
+                .WithBodyAsJson(new { x = "{{JsonPath.SelectToken request.body \"..Price\"}}" })
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // Assert
+            JObject j = JObject.FromObject(responseMessage.BodyAsJson);
+            Check.That(j["x"].Value<long>()).Equals(99);
+        }
+
+        [Fact]
+        public async Task Response_ProvideResponse_Handlebars_JsonPath_SelectToken_Request_BodyAsString()
+        {
+            // Assign
+            var body = new BodyData
+            {
+                BodyAsString = @"{
+                  ""Stores"": [
+                    ""Lambton Quay"",
+                    ""Willis Street""
+                  ],
+                  ""Manufacturers"": [
+                    {
+                      ""Name"": ""Acme Co"",
+                      ""Products"": [
+                        {
+                          ""Name"": ""Anvil"",
+                          ""Price"": 50
+                        }
+                      ]
+                    },
+                    {
+                      ""Name"": ""Contoso"",
+                      ""Products"": [
+                        {
+                          ""Name"": ""Elbow Grease"",
+                          ""Price"": 99.95
+                        },
+                        {
+                          ""Name"": ""Headlight Fluid"",
+                          ""Price"": 4
+                        }
+                      ]
+                    }
+                  ]
+                }"
+            };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithHeader("Content-Type", "application/json")
+                .WithBody("{{JsonPath.SelectToken request.body \"$.Manufacturers[?(@.Name == 'Acme Co')]\"}}")
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // Assert
+            Check.That(responseMessage.Body).Equals("{\r\n  \"Name\": \"Acme Co\",\r\n  \"Products\": [\r\n    {\r\n      \"Name\": \"Anvil\",\r\n      \"Price\": 50\r\n    }\r\n  ]\r\n}");
+        }
+
+        [Fact]
+        public async Task Response_ProvideResponse_Handlebars_JsonPath_SelectToken_Request_BodyAsJObject()
+        {
+            // Assign
+            var body = new BodyData
+            {
+                BodyAsJson = JObject.Parse(@"{
+                  'Stores': [
+                    'Lambton Quay',
+                    'Willis Street'
+                  ],
+                  'Manufacturers': [
+                    {
+                      'Name': 'Acme Co',
+                      'Products': [
+                        {
+                          'Name': 'Anvil',
+                          'Price': 50
+                        }
+                      ]
+                    },
+                    {
+                      'Name': 'Contoso',
+                      'Products': [
+                        {
+                          'Name': 'Elbow Grease',
+                          'Price': 99.95
+                        },
+                        {
+                          'Name': 'Headlight Fluid',
+                          'Price': 4
+                        }
+                      ]
+                    }
+                  ]
+                }")
+            };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithHeader("Content-Type", "application/json")
+                .WithBody("{{JsonPath.SelectToken request.bodyAsJson \"$.Manufacturers[?(@.Name == 'Acme Co')]\"}}")
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // Assert
+            Check.That(responseMessage.Body).Equals("{\r\n  \"Name\": \"Acme Co\",\r\n  \"Products\": [\r\n    {\r\n      \"Name\": \"Anvil\",\r\n      \"Price\": 50\r\n    }\r\n  ]\r\n}");
+        }
+
+        [Fact]
+        public async Task Response_ProvideResponse_Handlebars_JsonPath_SelectTokens_Request_BodyAsString()
+        {
+            // Assign
+            var body = new BodyData
+            {
+                BodyAsString = @"{
+                  ""Stores"": [
+                    ""Lambton Quay"",
+                    ""Willis Street""
+                  ],
+                  ""Manufacturers"": [
+                    {
+                      ""Name"": ""Acme Co"",
+                      ""Products"": [
+                        {
+                          ""Name"": ""Anvil"",
+                          ""Price"": 50
+                        }
+                      ]
+                    },
+                    {
+                      ""Name"": ""Contoso"",
+                      ""Products"": [
+                        {
+                          ""Name"": ""Elbow Grease"",
+                          ""Price"": 99.95
+                        },
+                        {
+                          ""Name"": ""Headlight Fluid"",
+                          ""Price"": 4
+                        }
+                      ]
+                    }
+                  ]
+                }"
+            };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithHeader("Content-Type", "application/json")
+                .WithBody("{{#JsonPath.SelectTokens request.body \"$..Products[?(@.Price >= 50)].Name\"}}{{#each this}}%{{@index}}:{{this}}%{{/each}}{{/JsonPath.SelectTokens}}")
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // Assert
+            Check.That(responseMessage.Body).Equals("%0:Anvil%%1:Elbow Grease%");
+        }
+
+        [Fact]
+        public async Task Response_ProvideResponse_Handlebars_JsonPath_SelectTokens_Request_BodyAsJObject()
+        {
+            // Assign
+            var body = new BodyData
+            {
+                BodyAsJson = JObject.Parse(@"{
+                  'Stores': [
+                    'Lambton Quay',
+                    'Willis Street'
+                  ],
+                  'Manufacturers': [
+                    {
+                      'Name': 'Acme Co',
+                      'Products': [
+                        {
+                          'Name': 'Anvil',
+                          'Price': 50
+                        }
+                      ]
+                    },
+                    {
+                      'Name': 'Contoso',
+                      'Products': [
+                        {
+                          'Name': 'Elbow Grease',
+                          'Price': 99.95
+                        },
+                        {
+                          'Name': 'Headlight Fluid',
+                          'Price': 4
+                        }
+                      ]
+                    }
+                  ]
+                }")
+            };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithHeader("Content-Type", "application/json")
+                .WithBody("{{#JsonPath.SelectTokens request.bodyAsJson \"$..Products[?(@.Price >= 50)].Name\"}}{{#each this}}%{{@index}}:{{this}}%{{/each}}{{/JsonPath.SelectTokens}}")
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // Assert
+            Check.That(responseMessage.Body).Equals("%0:Anvil%%1:Elbow Grease%");
+        }
+
+        [Fact]
+        public void Response_ProvideResponse_Handlebars_JsonPath_SelectTokens_Throws()
+        {
+            // Assign
+            var body = new BodyData
+            {
+                BodyAsJson = JObject.Parse(@"{
+                  'Stores': [
+                    'Lambton Quay',
+                    'Willis Street'
+                  ]
+                }")
+            };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithHeader("Content-Type", "application/json")
+                .WithBody("{{#JsonPath.SelectTokens request.body \"$..Products[?(@.Price >= 50)].Name\"}}{{id}} {{value}},{{/JsonPath.SelectTokens}}")
+                .WithTransformer();
+
+            // Act
+            Check.ThatAsyncCode(() => response.ProvideResponseAsync(request)).Throws<ArgumentNullException>();
+        }
+    }
+}

test/WireMock.Net.Tests/ResponseBuilderTests/ResponseWithHandlebarsLinqTests.cs

@@ -0,0 +1,225 @@
+using System;
+using System.Threading.Tasks;
+using Newtonsoft.Json.Linq;
+using NFluent;
+using WireMock.Models;
+using WireMock.ResponseBuilders;
+using WireMock.Util;
+using Xunit;
+
+namespace WireMock.Net.Tests.ResponseBuilderTests
+{
+    public class ResponseWithHandlebarsLinqTests
+    {
+        [Fact]
+        public async Task Response_ProvideResponse_Handlebars_Linq1_String0()
+        {
+            // Assign
+            var body = new BodyData { };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234/pathtest"), "POST", "::1", body);
+
+            var response = Response.Create()
+                .WithHeader("Content-Type", "application/json")
+                .WithBodyAsJson(new { x = "{{Linq request.Path 'it'}}" })
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // Assert
+            JObject j = JObject.FromObject(responseMessage.BodyAsJson);
+            Check.That(j["x"]).IsNotNull();
+            Check.That(j["x"].ToString()).Equals("/pathtest");
+        }
+
+        [Fact]
+        public async Task Response_ProvideResponse_Handlebars_Linq1_String1()
+        {
+            // Assign
+            var body = new BodyData
+            {
+                BodyAsJson = new JObject
+                {
+                    { "Id", new JValue(9) },
+                    { "Name", new JValue("Test") }
+                }
+            };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", "::1", body);
+
+            var response = Response.Create()
+                .WithHeader("Content-Type", "application/json")
+                .WithBodyAsJson(new { x = "{{Linq request.bodyAsJson 'it.Name + \"_123\"' }}" })
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // Assert
+            JObject j = JObject.FromObject(responseMessage.BodyAsJson);
+            Check.That(j["x"]).IsNotNull();
+            Check.That(j["x"].ToString()).Equals("Test_123");
+        }
+
+        [Fact]
+        public async Task Response_ProvideResponse_Handlebars_Linq1_String2()
+        {
+            // Assign
+            var body = new BodyData
+            {
+                BodyAsJson = new JObject
+                {
+                    { "Id", new JValue(9) },
+                    { "Name", new JValue("Test") }
+                }
+            };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", "::1", body);
+
+            var response = Response.Create()
+                .WithHeader("Content-Type", "application/json")
+                .WithBodyAsJson(new { x = "{{Linq request.bodyAsJson 'new(it.Name + \"_123\" as N, it.Id as I)' }}" })
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // Assert
+            JObject j = JObject.FromObject(responseMessage.BodyAsJson);
+            Check.That(j["x"]).IsNotNull();
+            Check.That(j["x"].ToString()).Equals("{ N = Test_123, I = 9 }");
+        }
+
+        [Fact]
+        public async Task Response_ProvideResponse_Handlebars_Linq2_Object()
+        {
+            // Assign
+            var body = new BodyData
+            {
+                BodyAsJson = new JObject
+                {
+                    { "Id", new JValue(9) },
+                    { "Name", new JValue("Test") }
+                }
+            };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", "::1", body);
+
+            var response = Response.Create()
+                .WithHeader("Content-Type", "application/json")
+                .WithBodyAsJson(new { x = "{{#Linq request.bodyAsJson 'new(it.Name + \"_123\" as N, it.Id as I)' }}{{this}}{{/Linq}}" })
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // Assert
+            JObject j = JObject.FromObject(responseMessage.BodyAsJson);
+            Check.That(j["x"]).IsNotNull();
+            Check.That(j["x"].ToString()).Equals("{ N = Test_123, I = 9 }");
+        }
+
+        [Fact]
+        public void Response_ProvideResponse_Handlebars_Linq_Throws_NotSupportedException()
+        {
+            // Assign
+            var body = new BodyData { BodyAsJson = new { x = "x" }};
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", "::1", body);
+
+            var response = Response.Create()
+                .WithBodyAsJson(new { x = "{{Linq request.bodyAsJson 1}}" })
+                .WithTransformer();
+
+            // Act
+            Check.ThatAsyncCode(() => response.ProvideResponseAsync(request)).Throws<NotSupportedException>();
+        }
+
+        [Fact]
+        public void Response_ProvideResponse_Handlebars_Linq1_Throws_ArgumentNullException()
+        {
+            // Assign
+            var body = new BodyData { };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", "::1", body);
+
+            var response = Response.Create()
+                .WithBodyAsJson(new { x = "{{Linq request.body 'Name'}}" })
+                .WithTransformer();
+
+            // Act
+            Check.ThatAsyncCode(() => response.ProvideResponseAsync(request)).Throws<ArgumentNullException>();
+        }
+
+        [Fact]
+        public void Response_ProvideResponse_Handlebars_Linq1_Throws_ArgumentException()
+        {
+            // Assign
+            var body = new BodyData { };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", "::1", body);
+
+            var response = Response.Create()
+                .WithBodyAsJson(new { x = "{{Linq request.bodyAsJson}} ''" })
+                .WithTransformer();
+
+            // Act
+            Check.ThatAsyncCode(() => response.ProvideResponseAsync(request)).Throws<ArgumentException>();
+        }
+
+        [Fact]
+        public async void Response_ProvideResponse_Handlebars_Linq1_ParseError_Returns_Empty()
+        {
+            // Assign
+            var body = new BodyData
+            {
+                BodyAsJson = new JObject
+                {
+                    { "Id", new JValue(9) },
+                    { "Name", new JValue("Test") }
+                }
+            };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", "::1", body);
+
+            var response = Response.Create()
+                .WithBodyAsJson(new { x = "{{Linq request.bodyAsJson '---' }}" })
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // Assert
+            JObject j = JObject.FromObject(responseMessage.BodyAsJson);
+            Check.That(j["x"].ToString()).IsEmpty();
+        }
+
+        [Fact]
+        public async void Response_ProvideResponse_Handlebars_Linq2_ParseError_Returns_Empty()
+        {
+            // Assign
+            var body = new BodyData
+            {
+                BodyAsJson = new JObject
+                {
+                    { "Id", new JValue(9) },
+                    { "Name", new JValue("Test") }
+                }
+            };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", "::1", body);
+
+            var response = Response.Create()
+                .WithBodyAsJson(new { x = "{{#Linq request.bodyAsJson '---' }}{{this}}{{/Linq}}" })
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // Assert
+            JObject j = JObject.FromObject(responseMessage.BodyAsJson);
+            Check.That(j["x"].ToString()).IsEmpty();
+        }
+    }
+}

test/WireMock.Net.Tests/ResponseBuilderTests/ResponseWithHandlebarsRegexTests.cs

@@ -0,0 +1,144 @@
+using System;
+using NFluent;
+using WireMock.Models;
+using WireMock.ResponseBuilders;
+using WireMock.Util;
+using Xunit;
+
+namespace WireMock.Net.Tests.ResponseBuilderTests
+{
+    public class ResponseWithHandlebarsRegexTests
+    {
+        private const string ClientIp = "::1";
+
+        [Fact]
+        public async void Response_ProvideResponse_Handlebars_RegexMatch()
+        {
+            // Assign
+            var body = new BodyData { BodyAsString = "abc" };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithBody("{{Regex.Match request.body \"^(?<x>\\w+)$\"}}")
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // assert
+            Check.That(responseMessage.Body).Equals("abc");
+        }
+
+        [Fact]
+        public async void Response_ProvideResponse_Handlebars_RegexMatch_NoMatch()
+        {
+            // Assign
+            var body = new BodyData { BodyAsString = "abc" };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithBody("{{Regex.Match request.body \"^?0$\"}}")
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // assert
+            Check.That(responseMessage.Body).Equals("");
+        }
+
+        [Fact]
+        public async void Response_ProvideResponse_Handlebars_RegexMatch_NoMatch_WithDefaultValue()
+        {
+            // Assign
+            var body = new BodyData { BodyAsString = "abc" };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithBody("{{Regex.Match request.body \"^?0$\" \"d\"}}")
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // assert
+            Check.That(responseMessage.Body).Equals("d");
+        }
+
+        [Fact]
+        public async void Response_ProvideResponse_Handlebars_RegexMatch2()
+        {
+            // Assign
+            var body = new BodyData { BodyAsString = "https://localhost:5000/" };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithBody("{{#Regex.Match request.body \"^(?<proto>\\w+)://[^/]+?(?<port>\\d+)/?\"}}{{this.port}}-{{this.proto}}{{/Regex.Match}}")
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // assert
+            Check.That(responseMessage.Body).Equals("5000-https");
+        }
+
+        [Fact]
+        public async void Response_ProvideResponse_Handlebars_RegexMatch2_NoMatch()
+        {
+            // Assign
+            var body = new BodyData { BodyAsString = "{{\\test" };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithBody("{{#Regex.Match request.body \"^(?<proto>\\w+)://[^/]+?(?<port>\\d+)/?\"}}{{this}}{{/Regex.Match}}")
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // assert
+            Check.That(responseMessage.Body).Equals("");
+        }
+
+        [Fact]
+        public async void Response_ProvideResponse_Handlebars_RegexMatch2_NoMatch_WithDefaultValue()
+        {
+            // Assign
+            var body = new BodyData { BodyAsString = "{{\\test" };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithBody("{{#Regex.Match request.body \"^(?<proto>\\w+)://[^/]+?(?<port>\\d+)/?\" \"x\"}}{{this}}{{/Regex.Match}}")
+                .WithTransformer();
+
+            // Act
+            var responseMessage = await response.ProvideResponseAsync(request);
+
+            // assert
+            Check.That(responseMessage.Body).Equals("x");
+        }
+
+        [Fact]
+        public void Response_ProvideResponse_Handlebars_RegexMatch2_Throws()
+        {
+            // Assign
+            var body = new BodyData { BodyAsString = "{{\\test" };
+
+            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
+
+            var response = Response.Create()
+                .WithBody("{{#Regex.Match request.bodyAsJson \"^(?<proto>\\w+)://[^/]+?(?<port>\\d+)/?\"}}{{/Regex.Match}}")
+                .WithTransformer();
+
+            // Act and Assert
+            Check.ThatAsyncCode(() => response.ProvideResponseAsync(request)).Throws<NotSupportedException>();
+        }
+    }
+}

test/WireMock.Net.Tests/ResponseBuilderTests/ResponseWithHandlebarsTests.cs

@@ -8,7 +8,6 @@ using Microsoft.Owin;
 using Microsoft.AspNetCore.Http;
 #endif
 using Newtonsoft.Json;
-using Newtonsoft.Json.Linq;
 using NFluent;
 using WireMock.Models;
 using WireMock.ResponseBuilders;
@@ -186,314 +185,6 @@ namespace WireMock.Net.Tests.ResponseBuilderTests
             Check.That(responseMessage.Body).Equals("test http://localhost:1234 1234 http localhost");
         }
 
-        [Fact]
-        public async Task Response_ProvideResponse_Handlebars_JsonPath_SelectToken_Object_ResponseBodyAsJson()
-        {
-            // Assign
-            var body = new BodyData
-            {
-                BodyAsString = @"{
-                  ""Stores"": [
-                    ""Lambton Quay"",
-                    ""Willis Street""
-                  ],
-                  ""Manufacturers"": [
-                    {
-                      ""Name"": ""Acme Co"",
-                      ""Products"": [
-                        {
-                          ""Name"": ""Anvil"",
-                          ""Price"": 50
-                        }
-                      ]
-                    },
-                    {
-                      ""Name"": ""Contoso"",
-                      ""Products"": [
-                        {
-                          ""Name"": ""Elbow Grease"",
-                          ""Price"": 99.95
-                        },
-                        {
-                          ""Name"": ""Headlight Fluid"",
-                          ""Price"": 4
-                        }
-                      ]
-                    }
-                  ]
-                }"
-            };
-
-            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
-
-            var response = Response.Create()
-                .WithHeader("Content-Type", "application/json")
-                .WithBodyAsJson(new { x = "{{JsonPath.SelectToken request.body \"$.Manufacturers[?(@.Name == 'Acme Co')]\"}}" })
-                .WithTransformer();
-
-            // Act
-            var responseMessage = await response.ProvideResponseAsync(request);
-
-            // Assert
-            JObject j = JObject.FromObject(responseMessage.BodyAsJson);
-            Check.That(j["x"]).IsNotNull();
-            Check.That(j["x"]["Name"].ToString()).Equals("Acme Co");
-        }
-
-        [Fact]
-        public async Task Response_ProvideResponse_Handlebars_JsonPath_SelectToken_Number_ResponseBodyAsJson()
-        {
-            // Assign
-            var body = new BodyData { BodyAsString = "{ \"Price\": 99 }" };
-
-            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
-
-            var response = Response.Create()
-                .WithHeader("Content-Type", "application/json")
-                .WithBodyAsJson(new { x = "{{JsonPath.SelectToken request.body \"..Price\"}}" })
-                .WithTransformer();
-
-            // Act
-            var responseMessage = await response.ProvideResponseAsync(request);
-
-            // Assert
-            JObject j = JObject.FromObject(responseMessage.BodyAsJson);
-            Check.That(j["x"].Value<long>()).Equals(99);
-        }
-
-        [Fact]
-        public async Task Response_ProvideResponse_Handlebars_JsonPath_SelectToken_Request_BodyAsString()
-        {
-            // Assign
-            var body = new BodyData
-            {
-                BodyAsString = @"{
-                  ""Stores"": [
-                    ""Lambton Quay"",
-                    ""Willis Street""
-                  ],
-                  ""Manufacturers"": [
-                    {
-                      ""Name"": ""Acme Co"",
-                      ""Products"": [
-                        {
-                          ""Name"": ""Anvil"",
-                          ""Price"": 50
-                        }
-                      ]
-                    },
-                    {
-                      ""Name"": ""Contoso"",
-                      ""Products"": [
-                        {
-                          ""Name"": ""Elbow Grease"",
-                          ""Price"": 99.95
-                        },
-                        {
-                          ""Name"": ""Headlight Fluid"",
-                          ""Price"": 4
-                        }
-                      ]
-                    }
-                  ]
-                }"
-            };
-
-            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
-
-            var response = Response.Create()
-                .WithHeader("Content-Type", "application/json")
-                .WithBody("{{JsonPath.SelectToken request.body \"$.Manufacturers[?(@.Name == 'Acme Co')]\"}}")
-                .WithTransformer();
-
-            // Act
-            var responseMessage = await response.ProvideResponseAsync(request);
-
-            // Assert
-            Check.That(responseMessage.Body).Equals("{\r\n  \"Name\": \"Acme Co\",\r\n  \"Products\": [\r\n    {\r\n      \"Name\": \"Anvil\",\r\n      \"Price\": 50\r\n    }\r\n  ]\r\n}");
-        }
-
-        [Fact]
-        public async Task Response_ProvideResponse_Handlebars_JsonPath_SelectToken_Request_BodyAsJObject()
-        {
-            // Assign
-            var body = new BodyData
-            {
-                BodyAsJson = JObject.Parse(@"{
-                  'Stores': [
-                    'Lambton Quay',
-                    'Willis Street'
-                  ],
-                  'Manufacturers': [
-                    {
-                      'Name': 'Acme Co',
-                      'Products': [
-                        {
-                          'Name': 'Anvil',
-                          'Price': 50
-                        }
-                      ]
-                    },
-                    {
-                      'Name': 'Contoso',
-                      'Products': [
-                        {
-                          'Name': 'Elbow Grease',
-                          'Price': 99.95
-                        },
-                        {
-                          'Name': 'Headlight Fluid',
-                          'Price': 4
-                        }
-                      ]
-                    }
-                  ]
-                }")
-            };
-
-            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
-
-            var response = Response.Create()
-                .WithHeader("Content-Type", "application/json")
-                .WithBody("{{JsonPath.SelectToken request.bodyAsJson \"$.Manufacturers[?(@.Name == 'Acme Co')]\"}}")
-                .WithTransformer();
-
-            // Act
-            var responseMessage = await response.ProvideResponseAsync(request);
-
-            // Assert
-            Check.That(responseMessage.Body).Equals("{\r\n  \"Name\": \"Acme Co\",\r\n  \"Products\": [\r\n    {\r\n      \"Name\": \"Anvil\",\r\n      \"Price\": 50\r\n    }\r\n  ]\r\n}");
-        }
-
-        [Fact]
-        public async Task Response_ProvideResponse_Handlebars_JsonPath_SelectTokens_Request_BodyAsString()
-        {
-            // Assign
-            var body = new BodyData
-            {
-                BodyAsString = @"{
-                  ""Stores"": [
-                    ""Lambton Quay"",
-                    ""Willis Street""
-                  ],
-                  ""Manufacturers"": [
-                    {
-                      ""Name"": ""Acme Co"",
-                      ""Products"": [
-                        {
-                          ""Name"": ""Anvil"",
-                          ""Price"": 50
-                        }
-                      ]
-                    },
-                    {
-                      ""Name"": ""Contoso"",
-                      ""Products"": [
-                        {
-                          ""Name"": ""Elbow Grease"",
-                          ""Price"": 99.95
-                        },
-                        {
-                          ""Name"": ""Headlight Fluid"",
-                          ""Price"": 4
-                        }
-                      ]
-                    }
-                  ]
-                }"
-            };
-
-            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
-
-            var response = Response.Create()
-                .WithHeader("Content-Type", "application/json")
-                .WithBody("{{#JsonPath.SelectTokens request.body \"$..Products[?(@.Price >= 50)].Name\"}}{{id}} {{value}},{{/JsonPath.SelectTokens}}")
-                .WithTransformer();
-
-            // Act
-            var responseMessage = await response.ProvideResponseAsync(request);
-
-            // Assert
-            Check.That(responseMessage.Body).Equals("0 Anvil,1 Elbow Grease,");
-        }
-
-        [Fact]
-        public async Task Response_ProvideResponse_Handlebars_JsonPath_SelectTokens_Request_BodyAsJObject()
-        {
-            // Assign
-            var body = new BodyData
-            {
-                BodyAsJson = JObject.Parse(@"{
-                  'Stores': [
-                    'Lambton Quay',
-                    'Willis Street'
-                  ],
-                  'Manufacturers': [
-                    {
-                      'Name': 'Acme Co',
-                      'Products': [
-                        {
-                          'Name': 'Anvil',
-                          'Price': 50
-                        }
-                      ]
-                    },
-                    {
-                      'Name': 'Contoso',
-                      'Products': [
-                        {
-                          'Name': 'Elbow Grease',
-                          'Price': 99.95
-                        },
-                        {
-                          'Name': 'Headlight Fluid',
-                          'Price': 4
-                        }
-                      ]
-                    }
-                  ]
-                }")
-            };
-
-            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
-
-            var response = Response.Create()
-                .WithHeader("Content-Type", "application/json")
-                .WithBody("{{#JsonPath.SelectTokens request.bodyAsJson \"$..Products[?(@.Price >= 50)].Name\"}}{{id}} {{value}},{{/JsonPath.SelectTokens}}")
-                .WithTransformer();
-
-            // Act
-            var responseMessage = await response.ProvideResponseAsync(request);
-
-            // Assert
-            Check.That(responseMessage.Body).Equals("0 Anvil,1 Elbow Grease,");
-        }
-
-        [Fact]
-        public void Response_ProvideResponse_Handlebars_JsonPath_SelectTokens_Throws()
-        {
-            // Assign
-            var body = new BodyData
-            {
-                BodyAsJson = JObject.Parse(@"{
-                  'Stores': [
-                    'Lambton Quay',
-                    'Willis Street'
-                  ]
-                }")
-            };
-
-            var request = new RequestMessage(new UrlDetails("http://localhost:1234"), "POST", ClientIp, body);
-
-            var response = Response.Create()
-                .WithHeader("Content-Type", "application/json")
-                .WithBody("{{#JsonPath.SelectTokens request.body \"$..Products[?(@.Price >= 50)].Name\"}}{{id}} {{value}},{{/JsonPath.SelectTokens}}")
-                .WithTransformer();
-
-            // Act
-            Check.ThatAsyncCode(() => response.ProvideResponseAsync(request)).Throws<ArgumentNullException>();
-        }
-
         [Fact]
         public async Task Response_ProvideResponse_Handlebars_WithBodyAsJson_ResultAsArray()
         {

test/WireMock.Net.Tests/Util/JsonUtilsTests.cs

@@ -0,0 +1,92 @@
+using System;
+using System.Linq;
+using Newtonsoft.Json.Linq;
+using NFluent;
+using System.Linq.Dynamic.Core;
+using WireMock.Util;
+using Xunit;
+
+namespace WireMock.Net.Tests.Util
+{
+    public class JsonUtilsTests
+    {
+        [Fact]
+        public void JsonUtils_ParseJTokenToObject()
+        {
+            // Assign
+            object value = "test";
+
+            // Act
+            string result = JsonUtils.ParseJTokenToObject<string>(value);
+
+            // Assert
+            Check.That(result).IsEqualTo(default(string));
+        }
+
+        [Fact]
+        public void JsonUtils_GenerateDynamicLinqStatement_JToken()
+        {
+            // Assign
+            JToken j = "Test";
+
+            // Act
+            string line = JsonUtils.GenerateDynamicLinqStatement(j);
+
+            // Assert
+            var queryable = new[] { j }.AsQueryable().Select(line);
+            bool result = queryable.Any("it == \"Test\"");
+            Check.That(result).IsTrue();
+
+            Check.That(line).IsEqualTo("string(it)");
+        }
+
+        [Fact]
+        public void JsonUtils_GenerateDynamicLinqStatement_JObject()
+        {
+            // Assign
+            var j = new JObject
+            {
+                {"U", new JValue(new Uri("http://localhost:80/abc?a=5"))},
+                {"N", new JValue((object) null)},
+                {"G", new JValue(Guid.NewGuid())},
+                {"Flt", new JValue(10.0f)},
+                {"Dbl", new JValue(Math.PI)},
+                {"Check", new JValue(true)},
+                {"Items", new JArray(new[] {new JValue(4), new JValue(8)})},
+                {
+                    "Child", new JObject
+                    {
+                        {"ChildId", new JValue(4)},
+                        {"ChildDateTime", new JValue(new DateTime(2018, 2, 17))},
+                        {"TS", new JValue(TimeSpan.FromMilliseconds(999))}
+                    }
+                },
+                {"Id", new JValue(9)},
+                {"Name", new JValue("Test")}
+            };
+
+            // Act
+            string line = JsonUtils.GenerateDynamicLinqStatement(j);
+
+            // Assert
+            var queryable = new[] { j }.AsQueryable().Select(line);
+            bool result = queryable.Any("Id > 4");
+            Check.That(result).IsTrue();
+
+            Check.That(line).IsEqualTo("new (Uri(U) as U, null as N, Guid(G) as G, double(Flt) as Flt, double(Dbl) as Dbl, bool(Check) as Check, (new [] { int(Items[0]), int(Items[1])}) as Items, new (int(Child.ChildId) as ChildId, DateTime(Child.ChildDateTime) as ChildDateTime, TimeSpan(Child.TS) as TS) as Child, int(Id) as Id, string(Name) as Name)");
+        }
+
+        [Fact]
+        public void JsonUtils_GenerateDynamicLinqStatement_Throws()
+        {
+            // Assign
+            var j = new JObject
+            {
+                {"B", new JValue(new byte[] {48, 49})}
+            };
+
+            // Act and Assert
+            Check.ThatCode(() => JsonUtils.GenerateDynamicLinqStatement(j)).Throws<NotSupportedException>();
+        }
+    }
+}

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

@@ -24,7 +24,8 @@
     <PackageReference Include="SimMetrics.Net" Version="1.0.4" />
     <PackageReference Include="System.Threading" Version="4.3.0" />
     <PackageReference Include="xunit" Version="2.4.0" /> 
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" /> 
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
+    <PackageReference Include="System.Linq.Dynamic.Core" Version="1.0.8.18" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net452'">