Merge branch 'master' into dependabot/nuget/src/WireMock.Net.AspNetCore.Middleware/System.Text.Json-8.0.5

CHANGELOG.md

@@ -1,3 +1,23 @@
+# 2.19.0 (07 October 2026)
+- [#1512](https://github.com/wiremock/WireMock.Net/pull/1512) - Use IDateTimeUtils in WireMockWebSocketContext [bug] contributed by [StefH](https://github.com/StefH)
+- [#1514](https://github.com/wiremock/WireMock.Net/pull/1514) - Fix DateTime in Response [bug] contributed by [StefH](https://github.com/StefH)
+- [#1511](https://github.com/wiremock/WireMock.Net/issues/1511) - Incorrect response datetime for mapped response [bug]
+
+# 2.18.0 (22 September 2026)
+- [#1510](https://github.com/wiremock/WireMock.Net/pull/1510) - WireMock.Net.OpenApiParser: fix depencency on RamlToOpenApiConverter.SourceOnly [bug] contributed by [StefH](https://github.com/StefH)
+- [#1508](https://github.com/wiremock/WireMock.Net/issues/1508) - Transitive Dependency Conflict with Microsoft.OpenApi in 2.16.0 [bug]
+
+# 2.17.0 (21 September 2026)
+- [#1509](https://github.com/wiremock/WireMock.Net/pull/1509) - Revert to RamlToOpenApiConverter.SourceOnly [bug] contributed by [StefH](https://github.com/StefH)
+
+# 2.16.0 (19 September 2026)
+- [#1502](https://github.com/wiremock/WireMock.Net/pull/1502) - Fix #1501: Generate WhenStateIs/WillSetStateTo correctly in ToCSharpCode contributed by [Bafyn](https://github.com/Bafyn)
+- [#1503](https://github.com/wiremock/WireMock.Net/pull/1503) - Fix FormUrlEncodedMatcher (+ refactor values / matchers logic) contributed by [StefH](https://github.com/StefH)
+- [#1504](https://github.com/wiremock/WireMock.Net/pull/1504) - Update SharpYaml package to version 2.5.1 [dependencies] contributed by [johnthcall](https://github.com/johnthcall)
+- [#1505](https://github.com/wiremock/WireMock.Net/pull/1505) - Upgrade dependency RamlToOpenApiConverter to version 0.40.0 [dependencies] contributed by [StefH](https://github.com/StefH)
+- [#1500](https://github.com/wiremock/WireMock.Net/issues/1500) - Sending a form-urlencoded body with a repeated field name returns HTTP 500 [bug]
+- [#1501](https://github.com/wiremock/WireMock.Net/issues/1501) - Generated C# code for stateful (Scenario) mappings does not compile and drops the WhenStateIs condition [bug]
+
 # 2.15.0 (15 August 2026)
 - [#1495](https://github.com/wiremock/WireMock.Net/pull/1495) - Fix #1494: `WithClientIP(MatchOperator, params IStringMatcher[])` ignores the MatchOperator argument [bug] contributed by [Bafyn](https://github.com/Bafyn)
 - [#1497](https://github.com/wiremock/WireMock.Net/pull/1497) - Fix WithParam RejectOnMatch inverting the match result #1496 [bug] contributed by [Bafyn](https://github.com/Bafyn)

Directory.Build.props

@@ -4,7 +4,7 @@
     </PropertyGroup>
 
     <PropertyGroup>
-        <VersionPrefix>2.15.0</VersionPrefix>
+        <VersionPrefix>2.19.0</VersionPrefix>
         <PackageIcon>WireMock.Net-Logo.png</PackageIcon>
         <PackageProjectUrl>https://github.com/wiremock/WireMock.Net</PackageProjectUrl>
         <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>
@@ -52,7 +52,7 @@
 
     <ItemGroup>
         <PackageReference Include="JetBrains.Annotations" Version="2026.2.0" PrivateAssets="All" />
-        <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.400" PrivateAssets="All" />
+        <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.401" PrivateAssets="All" />
     </ItemGroup>
 
     <ItemGroup Condition=" '$(TargetFramework)' == 'net8.0' ">

Generate-ReleaseNotes.cmd

@@ -1,6 +1,6 @@
 rem https://github.com/StefH/GitHubReleaseNotes
 
-SET version=2.15.0
+SET version=2.19.0
 
 GitHubReleaseNotes --output CHANGELOG.md --skip-empty-releases --exclude-labels wontfix test question invalid doc duplicate example environment --version %version% --token %GH_TOKEN%
 

PackageReleaseNotes.txt

@@ -1,8 +1,6 @@
-# 2.15.0 (15 August 2026)
+# 2.19.0 (07 October 2026)
-- #1495 Fix #1494: `WithClientIP(MatchOperator, params IStringMatcher[])` ignores the MatchOperator argument [bug]
+- #1512 Use IDateTimeUtils in WireMockWebSocketContext [bug]
-- #1497 Fix WithParam RejectOnMatch inverting the match result #1496 [bug]
+- #1514 Fix DateTime in Response [bug]
-- #1499 Update Testcontainers [bug]
+- #1511 Incorrect response datetime for mapped response [bug]
-- #1494 `WithClientIP(MatchOperator, params IStringMatcher[])` ignores the `MatchOperator` argument [bug]
-- #1496 `WithParam(key, MatchBehaviour.RejectOnMatch, values)` inverts the match result [bug]
 
 The full release notes can be found here: https://github.com/wiremock/WireMock.Net/blob/master/CHANGELOG.md

examples/WireMock.Net.Client/Program.cs

@@ -1,9 +1,7 @@
 // Copyright © WireMock.Net
 
-using System;
 using System.Net.Http.Headers;
 using System.Text;
-using System.Threading.Tasks;
 using Newtonsoft.Json;
 using RestEase;
 using WireMock.Admin.Settings;

examples/WireMock.Net.Console.NET8.WithCertificate/Program.cs

@@ -1,6 +1,5 @@
 // Copyright © WireMock.Net
 
-using System.IO;
 using WireMock.Logging;
 using WireMock.Server;
 using WireMock.Settings;

examples/WireMock.Net.Console.NET8/MainApp.cs

@@ -1,14 +1,9 @@
 // Copyright © WireMock.Net
 
-using System;
-using System.Collections.Generic;
 using System.Globalization;
-using System.IO;
-using System.Linq;
 using System.Net;
-using System.Threading.Tasks;
 using Newtonsoft.Json;
-using SharpYaml.Model;
+using Scriban.Runtime;
 using WireMock.Logging;
 using WireMock.Matchers;
 using WireMock.Models;
@@ -291,11 +286,21 @@ namespace WireMock.Net.ConsoleApplication
 
             var server = WireMockServer.Start(new WireMockServerSettings
             {
+                StartAdminInterface = true,
                 Logger = new WireMockConsoleLogger(),
-
                 Port = 9091
             });
 
+            server
+              .WhenRequest(r => r
+                  .WithPath("/test")
+                  .UsingAnyMethod()
+              )
+              .ThenRespondWith(r => r
+                  .WithStatusCode(HttpStatusCode.OK)
+                  .WithBody("OK")
+              );
+
             server
                .WhenRequest(r => r
                    .WithPath("/Content-Length")
@@ -405,12 +410,26 @@ namespace WireMock.Net.ConsoleApplication
                     // handlebarsContext.RegisterHelper(transformer.Name, transformer.Render); TODO
                 },
 
+                ScribanRegistrationCallback = (scriptObject, fileSystemHandler) =>
+                {
+                    var globals = (ScriptObject)scriptObject;
+                    globals.Import("greet", new Func<string, string>(name => $"Hello {name}"));
+                },
+
                 // Uncomment below if you want to use the CustomFileSystemFileHandler
                 // FileSystemHandler = new CustomFileSystemFileHandler()
             });
             System.Console.WriteLine("WireMockServer listening at {0}", string.Join(",", server.Urls));
 
             server.SetBasicAuthentication("a", "b");
+
+            server
+                .Given(Request.Create().WithPath("/scriban/greet").UsingGet())
+                .RespondWith(Response.Create()
+                    .WithBody("{{ greet 'WireMock.Net' }}")
+                    .WithTransformer(TransformerType.Scriban)
+                );
+
             //server.SetAzureADAuthentication(Environment.GetEnvironmentVariable("WIREMOCK_AAD_TENANT")!, "api://e083d51a-01a6-446c-8ad5-0c5c7f002208");
 
             //var http = new HttpClient();

examples/WireMock.Net.Console.RequestLogTest/Program.cs

@@ -1,9 +1,5 @@
 // Copyright © WireMock.Net
 
-using System;
-using System.Linq;
-using System.Net.Http;
-using System.Threading.Tasks;
 using WireMock.Logging;
 using WireMock.Net.StandAlone;
 using WireMock.RequestBuilders;

examples/WireMock.Net.ConsoleApp.UsingNuGet/WireMock.Net.ConsoleApp.UsingNuGet.csproj

@@ -16,7 +16,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="WireMock.Net" Version="2.12.0" />
+    <PackageReference Include="WireMock.Net" Version="2.15.0" />
   </ItemGroup>
 
 </Project>

examples/WireMock.Net.OpenApiParser.ConsoleApp/Program.cs

@@ -1,7 +1,5 @@
 // Copyright © WireMock.Net
 
-using System;
-using System.IO;
 using WireMock.RequestBuilders;
 using WireMock.ResponseBuilders;
 

examples/WireMock.Net.OpenApiParser.ConsoleApp/WireMock.Net.OpenApiParser.ConsoleApp.csproj

@@ -6,15 +6,13 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <!--<PackageReference Include="Microsoft.OpenApi.YamlReader" Version="3.7.0" />-->
-        
         <ProjectReference Include="..\..\src\WireMock.Net.Abstractions\WireMock.Net.Abstractions.csproj" />
         <ProjectReference Include="..\..\src\WireMock.Net.OpenApiParser\WireMock.Net.OpenApiParser.csproj" />
         <ProjectReference Include="..\..\src\WireMock.Net\WireMock.Net.csproj" />
     </ItemGroup>
 
     <ItemGroup Condition="'$(Configuration)' == 'Release'">
-        <PackageReference Include="Microsoft.OpenApi" Version="3.7.0" PrivateAssets="All" />
+        <PackageReference Include="Microsoft.OpenApi" Version="3.10.2" PrivateAssets="All" />
     </ItemGroup>
 
     <ItemGroup>

src/WireMock.Net.Abstractions/IRequestMessage.cs

@@ -32,7 +32,7 @@ public interface IRequestMessage
     string? ProxyUrl { get; set; }
 
     /// <summary>
-    /// Gets the DateTime.
+    /// The DateTime when this request was done.
     /// </summary>
     DateTime DateTime { get; }
 

src/WireMock.Net.Abstractions/IResponseMessage.cs

@@ -52,7 +52,7 @@ public interface IResponseMessage
     object? StatusCode { get; set; }
 
     /// <summary>
-    /// Gets the DateTime.
+    /// The DateTime when this response was sent.
     /// </summary>
     DateTime DateTime { get; }
 

src/WireMock.Net.Minimal/Extensions/HttpContextExtensions.cs

@@ -0,0 +1,14 @@
+// Copyright © WireMock.Net
+
+using System.Diagnostics.CodeAnalysis;
+using Microsoft.AspNetCore.Http;
+
+namespace WireMock.Extensions;
+
+internal static class HttpContextExtensions
+{
+    internal static bool TryGet<T>(this HttpContext httpContext, [NotNullWhen(true)] out T? value)
+    {
+        return httpContext.Items.TryGetValue(nameof(T), out value);
+    }
+}

src/WireMock.Net.Minimal/Owin/Mappers/OwinRequestMapper.cs

@@ -12,7 +12,7 @@ namespace WireMock.Owin.Mappers;
 /// <summary>
 /// OwinRequestMapper
 /// </summary>
-internal class OwinRequestMapper : IOwinRequestMapper
+internal class OwinRequestMapper(IDateTimeUtils dateTimeUtils) : IOwinRequestMapper
 {
     /// <inheritdoc />
     public async Task<RequestMessage> MapAsync(HttpContext context, IWireMockMiddlewareOptions options)
@@ -72,7 +72,7 @@ internal class OwinRequestMapper : IOwinRequestMapper
             await request.HttpContext.Connection.GetClientCertificateAsync()
         )
         {
-            DateTime = DateTime.UtcNow
+            DateTime = dateTimeUtils.UtcNow
         };
     }
 

src/WireMock.Net.Minimal/Owin/WireMockMiddleware.cs

@@ -171,6 +171,12 @@ internal class WireMockMiddleware(
         }
         finally
         {
+            // Set the DateTime from the Response to the current DateTime
+            if (response is ResponseMessage responseMessage)
+            {
+                responseMessage.DateTime = dateTimeUtils.UtcNow;
+            }
+
             logger.LogRequestAndResponse(logRequest, request, response, result.Match, result.Partial, activity);
 
             try

src/WireMock.Net.Minimal/Owin/WireMockMiddlewareLogger.cs

@@ -73,20 +73,20 @@ internal class WireMockMiddlewareLogger(
             var logEntries = options.LogEntries.ToList();
 
             foreach (var logEntry in logEntries
-                .OrderBy(le => le.RequestMessage?.DateTime ?? le.ResponseMessage?.DateTime)
+                .OrderBy(le => le.RequestMessage?.DateTime)
                 .Take(logEntries.Count - options.MaxRequestLogCount.Value))
             {
                 TryRemoveLogEntry(logEntry);
             }
         }
 
-        // In case RequestLogExpirationDuration has a value greater than 0, try to delete existing request logs based on the date.
+        // In case RequestLogExpirationDuration has a value greater than 0, try to delete existing request logs based on the RequestMessage date.
         if (options.RequestLogExpirationDuration is > 0)
         {
             var logEntries = options.LogEntries.ToList();
 
             var checkTime = dateTimeUtils.UtcNow.AddHours(-options.RequestLogExpirationDuration.Value);
-            foreach (var logEntry in logEntries.Where(le => le.RequestMessage?.DateTime < checkTime || le.ResponseMessage?.DateTime < checkTime))
+            foreach (var logEntry in logEntries.Where(le => le.RequestMessage?.DateTime < checkTime))
             {
                 TryRemoveLogEntry(logEntry);
             }

src/WireMock.Net.Minimal/ResponseBuilders/Response.cs

@@ -87,7 +87,7 @@ public partial class Response : IResponseBuilder
     {
         var message = responseMessage ?? new ResponseMessage
         {
-            DateTime = DateTime.UtcNow // We set it here to the current time.
+            DateTime = DateTime.UtcNow // Initially, this is set to the current time, but will be updated to the real time once the response has been sent.
         };
 
         return new Response(message);

src/WireMock.Net.Minimal/ResponseMessage.cs

@@ -2,7 +2,6 @@
 
 // This source file is based on mock4net by Alexandre Victoor which is licensed under the Apache 2.0 License.
 // For more details see 'mock4net/LICENSE.txt' and 'mock4net/readme.md' in this project root.
-using System.Linq;
 using Stef.Validation;
 using WireMock.ResponseBuilders;
 using WireMock.Types;

src/WireMock.Net.Minimal/ResponseProviders/WebSocketResponseProvider.cs

@@ -67,7 +67,8 @@ internal class WebSocketResponseProvider(WebSocketBuilder builder, IGuidUtils gu
                 builder,
                 options,
                 logger,
-                guidUtils
+                guidUtils,
+                dateTimeUtils
             );
 
             // Add to registry

src/WireMock.Net.Minimal/Settings/WireMockServerSettingsExtensions.cs

@@ -0,0 +1,40 @@
+// Copyright © WireMock.Net
+
+using JetBrains.Annotations;
+using Scriban.Runtime;
+using Stef.Validation;
+using WireMock.Handlers;
+
+namespace WireMock.Settings;
+
+/// <summary>
+/// Extension methods for <see cref="WireMockServerSettings"/>.
+/// </summary>
+public static class WireMockServerSettingsExtensions
+{
+    /// <summary>
+    /// Adds a strongly typed Scriban registration to <see cref="WireMockServerSettings.ScribanRegistrationCallback"/>.
+    /// </summary>
+    /// <remarks>
+    /// Members added to the <see cref="ScriptObject"/> are available as globals in Scriban and Scriban-DotLiquid templates.
+    /// When a callback is already configured, it is kept and invoked before <paramref name="registrationCallback"/>.
+    /// </remarks>
+    /// <param name="settings">The settings.</param>
+    /// <param name="registrationCallback">The action which registers functions, objects or variables on the <see cref="ScriptObject"/>.</param>
+    /// <returns>The same <see cref="WireMockServerSettings"/> instance.</returns>
+    [PublicAPI]
+    public static WireMockServerSettings WithScribanRegistration(this WireMockServerSettings settings, Action<ScriptObject, IFileSystemHandler> registrationCallback)
+    {
+        Guard.NotNull(settings);
+        Guard.NotNull(registrationCallback);
+
+        var existingCallback = settings.ScribanRegistrationCallback;
+        settings.ScribanRegistrationCallback = (scriptObject, fileSystemHandler) =>
+        {
+            existingCallback?.Invoke(scriptObject, fileSystemHandler);
+            registrationCallback((ScriptObject)scriptObject, fileSystemHandler);
+        };
+
+        return settings;
+    }
+}

src/WireMock.Net.Minimal/Transformers/Scriban/ScribanContext.cs

@@ -1,6 +1,7 @@
 // Copyright © WireMock.Net
 
 using Scriban;
+using Scriban.Runtime;
 using Stef.Validation;
 using WireMock.Handlers;
 using WireMock.Types;
@@ -9,21 +10,40 @@ namespace WireMock.Transformers.Scriban;
 
 internal class ScribanContext : ITransformerContext
 {
+    private static readonly MemberRenamerDelegate MemberRenamer = member => member.Name;
+
     private readonly TransformerType _transformerType;
+    private readonly ScriptObject? _customGlobals;
 
     public IFileSystemHandler FileSystemHandler { get; }
 
-    public ScribanContext(IFileSystemHandler fileSystemHandler, TransformerType transformerType)
+    public ScribanContext(IFileSystemHandler fileSystemHandler, TransformerType transformerType, ScriptObject? customGlobals = null)
     {
         FileSystemHandler = Guard.NotNull(fileSystemHandler);
         _transformerType = transformerType;
+        _customGlobals = customGlobals;
     }
 
     public string ParseAndRender(string text, object model)
     {
-        var template = _transformerType == TransformerType.ScribanDotLiquid ? Template.ParseLiquid(text) : Template.Parse(text);
+        var isLiquid = _transformerType == TransformerType.ScribanDotLiquid;
+        var template = isLiquid ? Template.ParseLiquid(text) : Template.Parse(text);
 
-        return template.Render(model, member => member.Name);
+        if (_customGlobals is null)
+        {
+            return template.Render(model, MemberRenamer);
+        }
+
+        // Same as Template.Render(model, MemberRenamer), but with the custom globals pushed beneath the model so that the model takes precedence.
+        var context = isLiquid ? new LiquidTemplateContext() : new TemplateContext();
+        context.MemberRenamer = MemberRenamer;
+        context.PushGlobal(_customGlobals);
+
+        var modelGlobals = new ScriptObject();
+        modelGlobals.Import(model, renamer: MemberRenamer);
+        context.PushGlobal(modelGlobals);
+
+        return template.Render(context);
     }
 
     public object? ParseAndEvaluate(string text, object model)

src/WireMock.Net.Minimal/Transformers/Scriban/ScribanContextFactory.cs

@@ -1,24 +1,32 @@
 // Copyright © WireMock.Net
 
-using WireMock.Handlers;
+using Scriban.Runtime;
-using WireMock.Types;
 using Stef.Validation;
+using WireMock.Settings;
+using WireMock.Types;
 
 namespace WireMock.Transformers.Scriban;
 
 internal class ScribanContextFactory : ITransformerContextFactory
 {
-    private readonly IFileSystemHandler _fileSystemHandler;
+    private readonly WireMockServerSettings _settings;
     private readonly TransformerType _transformerType;
 
-    public ScribanContextFactory(IFileSystemHandler fileSystemHandler, TransformerType transformerType)
+    public ScribanContextFactory(WireMockServerSettings settings, TransformerType transformerType)
     {
-        _fileSystemHandler = Guard.NotNull(fileSystemHandler);
+        _settings = Guard.NotNull(settings);
         _transformerType = Guard.Condition(transformerType, t => t is TransformerType.Scriban or TransformerType.ScribanDotLiquid);
     }
 
     public ITransformerContext Create()
     {
-        return new ScribanContext(_fileSystemHandler, _transformerType);
+        ScriptObject? customGlobals = null;
+        if (_settings.ScribanRegistrationCallback is { } registrationCallback)
+        {
+            customGlobals = new ScriptObject();
+            registrationCallback(customGlobals, _settings.FileSystemHandler);
+        }
+
+        return new ScribanContext(_settings.FileSystemHandler, _transformerType, customGlobals);
     }
 }

src/WireMock.Net.Minimal/Transformers/TransformerFactory.cs

@@ -19,8 +19,8 @@ internal static class TransformerFactory
                 
             case TransformerType.Scriban:
             case TransformerType.ScribanDotLiquid:
-                var factoryDotLiquid = new ScribanContextFactory(settings.FileSystemHandler, transformerType);
+                var factoryScriban = new ScribanContextFactory(settings, transformerType);
-                return new Transformer(settings, factoryDotLiquid);
+                return new Transformer(settings, factoryScriban);
 
             default:
                 throw new NotSupportedException($"{nameof(TransformerType)} '{transformerType}' is not supported.");

src/WireMock.Net.Minimal/WebSockets/WireMockWebSocketContext.cs

@@ -18,6 +18,8 @@ namespace WireMock.WebSockets;
 /// </summary>
 public class WireMockWebSocketContext : IWebSocketContext
 {
+    private readonly IDateTimeUtils _dateTimeUtils;
+
     /// <inheritdoc />
     public Guid ConnectionId { get; }
 
@@ -50,7 +52,8 @@ public class WireMockWebSocketContext : IWebSocketContext
         WebSocketBuilder builder,
         IWireMockMiddlewareOptions options,
         IWireMockMiddlewareLogger logger,
-        IGuidUtils guidUtils
+        IGuidUtils guidUtils,
+        IDateTimeUtils dateTimeUtils
     )
     {
         HttpContext = httpContext;
@@ -61,6 +64,7 @@ public class WireMockWebSocketContext : IWebSocketContext
         Builder = builder;
         Options = options;
         Logger = logger;
+        _dateTimeUtils = dateTimeUtils;
 
         ConnectionId = guidUtils.NewGuid();
     }
@@ -169,7 +173,7 @@ public class WireMockWebSocketContext : IWebSocketContext
                 null
             )
             {
-                DateTime = DateTime.UtcNow
+                DateTime = _dateTimeUtils.UtcNow
             };
         }
         else
@@ -179,7 +183,7 @@ public class WireMockWebSocketContext : IWebSocketContext
             {
                 Method = method,
                 BodyData = bodyData,
-                DateTime = DateTime.UtcNow
+                DateTime = _dateTimeUtils.UtcNow
             };
         }
 

src/WireMock.Net.OpenApiParser/Extensions/DictionaryExtensions.cs

@@ -1,8 +1,5 @@
 // Copyright © WireMock.Net
 
-
-using System.Diagnostics.CodeAnalysis;
-
 namespace System.Collections.Generic;
 
 internal static class DictionaryExtensions

src/WireMock.Net.OpenApiParser/Extensions/WireMockServerExtensions.cs

@@ -1,8 +1,8 @@
 // Copyright © WireMock.Net
 
 using JetBrains.Annotations;
-using Microsoft.OpenApi.Reader;
 using Stef.Validation;
+using WireMock.Net.OpenApiParser.Models;
 using WireMock.Net.OpenApiParser.Settings;
 using WireMock.Server;
 

src/WireMock.Net.OpenApiParser/ILRepack.targets

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8" ?>
+
+<!-- See also https://github.com/ravibpatel/ILRepack.Lib.MSBuild.Task/issues/26 -->
+<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+    <Target Name="ILRepacker" AfterTargets="Build" Condition="'$(Configuration)' == 'Release'">
+        <ItemGroup>
+            <InputAssemblies Include="$(OutputPath)WireMock.Net.OpenApiParser.dll" />
+            <InputAssemblies Include="@(ReferencePathWithRefAssemblies)" Condition="'%(filename)' == 'Microsoft.OpenApi.YamlReader'" />
+            <InputAssemblies Include="@(ReferencePathWithRefAssemblies)" Condition="'%(filename)' == 'Microsoft.OpenApi'" />
+            <LibraryPath Include="%(ReferencePathWithRefAssemblies.RelativeDir)" />
+        </ItemGroup>
+
+        <ItemGroup>
+            <DoNotInternalizeAssemblies Include="WireMock.Net.OpenApiParser" />
+        </ItemGroup>
+
+        <ILRepack
+            Parallel="true"
+            Internalize="true"
+            RenameInternalized="true"
+            InternalizeExclude="@(DoNotInternalizeAssemblies)"
+            InputAssemblies="@(InputAssemblies)"
+            LibraryPath="@(LibraryPath)"
+            TargetKind="Dll"
+            KeyFile="../../src/WireMock.Net/WireMock.Net.snk"
+            OutputFile="$(OutputPath)$(AssemblyName).dll"
+        />
+    </Target>
+</Project>

src/WireMock.Net.OpenApiParser/IWireMockOpenApiParser.cs

@@ -1,7 +1,7 @@
 // Copyright © WireMock.Net
 
-using Microsoft.OpenApi.Reader;
 using WireMock.Admin.Mappings;
+using WireMock.Net.OpenApiParser.Models;
 using WireMock.Net.OpenApiParser.Settings;
 
 namespace WireMock.Net.OpenApiParser;

src/WireMock.Net.OpenApiParser/Models/OpenApiDiagnostic.cs

@@ -0,0 +1,25 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT license.
+
+namespace WireMock.Net.OpenApiParser.Models;
+
+/// <summary>
+/// Object containing all diagnostic information related to Open API parsing.
+/// </summary>
+public class OpenApiDiagnostic
+{
+    /// <summary>
+    /// List of all errors.
+    /// </summary>
+    public List<OpenApiError> Errors { get; set; } = [];
+
+    /// <summary>
+    /// List of all warnings
+    /// </summary>
+    public List<OpenApiError> Warnings { get; set; } = [];
+
+    /// <summary>
+    /// Open API specification version of the document parsed.
+    /// </summary>
+    public OpenApiSpecVersion SpecificationVersion { get; set; }
+}

src/WireMock.Net.OpenApiParser/Models/OpenApiError.cs

@@ -0,0 +1,46 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT license.
+
+namespace WireMock.Net.OpenApiParser.Models;
+
+/// <summary>
+/// Error related to the Open API Document.
+/// </summary>
+public class OpenApiError
+{
+    /// <summary>
+    /// Initializes the <see cref="OpenApiError"/> class.
+    /// </summary>
+    public OpenApiError(string? pointer, string message)
+    {
+        Pointer = pointer;
+        Message = message;
+    }
+
+    /// <summary>
+    /// Initializes a copy of an <see cref="OpenApiError"/> object
+    /// </summary>
+    public OpenApiError(OpenApiError error)
+    {
+        Pointer = error.Pointer;
+        Message = error.Message;
+    }
+
+    /// <summary>
+    /// Message explaining the error.
+    /// </summary>
+    public string Message { get; set; }
+
+    /// <summary>
+    /// Pointer to the location of the error.
+    /// </summary>
+    public string? Pointer { get; set; }
+
+    /// <summary>
+    /// Gets the string representation of <see cref="OpenApiError"/>.
+    /// </summary>
+    public override string ToString()
+    {
+        return Message + (!string.IsNullOrEmpty(Pointer) ? " [" + Pointer + "]" : "");
+    }
+}

src/WireMock.Net.OpenApiParser/Models/OpenApiMapper.cs

@@ -0,0 +1,23 @@
+// Copyright © WireMock.Net
+
+using MicrosoftOpenApiDiagnostic = Microsoft.OpenApi.Reader.OpenApiDiagnostic;
+
+namespace WireMock.Net.OpenApiParser.Models;
+
+internal static class OpenApiMapper
+{
+    internal static OpenApiDiagnostic? Map(MicrosoftOpenApiDiagnostic? openApiDiagnostic)
+    {
+        if (openApiDiagnostic == null)
+        {
+            return null;
+        }
+
+        return new OpenApiDiagnostic
+        {
+            Errors = openApiDiagnostic.Errors.Select(e => new OpenApiError(e.Pointer, e.Message)).ToList(),
+            Warnings = openApiDiagnostic.Warnings.Select(e => new OpenApiError(e.Pointer, e.Message)).ToList(),
+            SpecificationVersion = (OpenApiSpecVersion)openApiDiagnostic.SpecificationVersion
+        };
+    }
+}

src/WireMock.Net.OpenApiParser/Models/OpenApiSpecVersion.cs

@@ -0,0 +1,29 @@
+// Copyright © WireMock.Net
+
+namespace WireMock.Net.OpenApiParser.Models;
+
+/// <summary>
+/// Represents versions of OpenAPI specification.
+/// </summary>
+public enum OpenApiSpecVersion
+{
+    /// <summary>
+    /// Represents OpenAPI V2.0 spec
+    /// </summary>
+    OpenApi2_0,
+
+    /// <summary>
+    /// Represents all patches of OpenAPI V3.0 spec (e.g. 3.0.0, 3.0.1)
+    /// </summary> 
+    OpenApi3_0,
+
+    /// <summary>
+    /// Represents OpenAPI V3.1 spec
+    /// </summary>
+    OpenApi3_1,
+
+    /// <summary>
+    /// Represents OpenAPI V3.2 spec
+    /// </summary>
+    OpenApi3_2
+}

src/WireMock.Net.OpenApiParser/Settings/IWireMockOpenApiParserExampleValues.cs

@@ -1,6 +1,5 @@
 // Copyright © WireMock.Net
 
-using System;
 using Microsoft.OpenApi;
 
 namespace WireMock.Net.OpenApiParser.Settings;

src/WireMock.Net.OpenApiParser/Settings/WireMockOpenApiParserDynamicExampleValues.cs

@@ -1,6 +1,5 @@
 // Copyright © WireMock.Net
 
-using System;
 using Microsoft.OpenApi;
 using RandomDataGenerator.FieldOptions;
 using RandomDataGenerator.Randomizers;

src/WireMock.Net.OpenApiParser/Settings/WireMockOpenApiParserExampleValues.cs

@@ -1,6 +1,5 @@
 // Copyright © WireMock.Net
 
-using System;
 using Microsoft.OpenApi;
 
 namespace WireMock.Net.OpenApiParser.Settings;

src/WireMock.Net.OpenApiParser/Utils/DateTimeUtils.cs

@@ -1,6 +1,5 @@
 // Copyright © WireMock.Net
 
-using System;
 using System.Globalization;
 
 namespace WireMock.Net.OpenApiParser.Utils;

src/WireMock.Net.OpenApiParser/Utils/ExampleValueGenerator.cs

@@ -1,7 +1,5 @@
 // Copyright © WireMock.Net
 
-using System;
-using System.Linq;
 using System.Text.Json.Nodes;
 using Microsoft.OpenApi;
 using Stef.Validation;

src/WireMock.Net.OpenApiParser/WireMock.Net.OpenApiParser.csproj

@@ -23,7 +23,7 @@
         <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     </PropertyGroup>
 
-    <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' or '$(TargetFramework)' == 'netstandard2.1' ">
+    <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
         <PackageReference Include="Required" Version="1.0.0">
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
@@ -40,11 +40,27 @@
 
     <ItemGroup>
         <PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
-        <PackageReference Include="RamlToOpenApiConverter" Version="0.40.0" />
         <PackageReference Include="RandomDataGenerator.Net" Version="1.0.19.1" />
         <PackageReference Include="Stef.Validation" Version="0.3.0" />
     </ItemGroup>
 
+    <!-- https://github.com/wiremock/WireMock.Net/issues/1508 -->
+    <ItemGroup>
+        <PackageReference Include="RamlToOpenApiConverter.SourceOnly" Version="0.50.0" />
+    </ItemGroup>
+
+    <ItemGroup Condition="'$(Configuration)' == 'Debug'">
+        <PackageReference Include="Microsoft.OpenApi.YamlReader" Version="3.10.2" />
+    </ItemGroup>
+
+    <ItemGroup Condition="'$(Configuration)' == 'Release'">
+        <!-- Keep at version 2.0.43 (https://github.com/ravibpatel/ILRepack.Lib.MSBuild.Task/issues/80) -->
+        <PackageReference Include="ILRepack.Lib.MSBuild.Task" Version="2.0.43" PrivateAssets="All" />
+        <PackageReference Include="Microsoft.OpenApi" Version="3.10.2" PrivateAssets="All" />
+        <PackageReference Include="Microsoft.OpenApi.YamlReader" Version="3.10.2" PrivateAssets="All" />
+        <PackageReference Include="SharpYaml" Version="2.1.5" />
+    </ItemGroup>
+
     <ItemGroup>
         <ProjectReference Include="..\..\src\WireMock.Net.Abstractions\WireMock.Net.Abstractions.csproj" />
     </ItemGroup>

src/WireMock.Net.OpenApiParser/WireMockOpenApiParser.cs

@@ -9,7 +9,9 @@ using Microsoft.OpenApi.YamlReader;
 using RamlToOpenApiConverter;
 using WireMock.Admin.Mappings;
 using WireMock.Net.OpenApiParser.Mappers;
+using WireMock.Net.OpenApiParser.Models;
 using WireMock.Net.OpenApiParser.Settings;
+using OpenApiDiagnostic = WireMock.Net.OpenApiParser.Models.OpenApiDiagnostic;
 
 namespace WireMock.Net.OpenApiParser;
 
@@ -125,7 +127,7 @@ public class WireMockOpenApiParser : IWireMockOpenApiParser
 
         var result = OpenApiDocument.Load(memoryStream, settings: _readerSettings);
 
-        diagnostic = result.Diagnostic ?? new OpenApiDiagnostic();
+        diagnostic = OpenApiMapper.Map(result.Diagnostic) ?? new OpenApiDiagnostic();
         openApiDocument = result.Document;
         return openApiDocument != null && !diagnostic.Errors.Any();
     }

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

@@ -194,6 +194,20 @@ public class WireMockServerSettings
     [JsonIgnore]
     public Action<IHandlebars, IFileSystemHandler>? HandlebarsRegistrationCallback { get; set; }
 
+    /// <summary>
+    /// Action which can be used to add additional Scriban registrations (functions, objects or variables). [Optional]
+    /// </summary>
+    /// <remarks>
+    /// The first argument is a <c>Scriban.Runtime.ScriptObject</c> from the <c>Scriban.Signed</c> package.
+    /// It is typed as <see cref="object"/> so that this package does not depend on Scriban.
+    /// Members added to it are available as globals in <see cref="TransformerType.Scriban"/> and <see cref="TransformerType.ScribanDotLiquid"/> templates.
+    /// On a name clash the template model (<c>request</c>, <c>response</c>, <c>mapping</c> and <c>data</c>) takes precedence.
+    /// The action is invoked each time a transformer context is created.
+    /// </remarks>
+    [PublicAPI]
+    [JsonIgnore]
+    public Action<object, IFileSystemHandler>? ScribanRegistrationCallback { get; set; }
+
     /// <summary>
     /// Allow the usage of CSharpCodeMatcher (default is not allowed).
     /// </summary>

test/WireMock.Net.Tests/Facts/RunOnDockerFact.cs

@@ -0,0 +1,29 @@
+// Copyright © WireMock.Net
+#if NET6_0_OR_GREATER
+using System.Diagnostics.CodeAnalysis;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using WireMock.Net.Testcontainers.Utils;
+
+namespace WireMock.Net.Tests.Facts;
+
+[ExcludeFromCodeCoverage]
+public sealed class RunOnDockerFact : FactAttribute
+{
+    public RunOnDockerFact(
+        [CallerFilePath] string? sourceFilePath = null,
+        [CallerLineNumber] int sourceLineNumber = -1) : base(sourceFilePath, sourceLineNumber)
+    {
+
+        OSPlatform currentPlatform;
+        try
+        {
+            currentPlatform = TestcontainersUtils.GetImageOSAsync.Value.Result;
+        }
+        catch
+        {
+            Skip = $"Only run test when Docker is installed.";
+        }
+    }
+}
+#endif

test/WireMock.Net.Tests/Facts/RunOnDockerPlatformFact.cs

@@ -15,7 +15,19 @@ public sealed class RunOnDockerPlatformFact : FactAttribute
         [CallerFilePath] string? sourceFilePath = null,
         [CallerLineNumber] int sourceLineNumber = -1) : base(sourceFilePath, sourceLineNumber)
     {
-        if (TestcontainersUtils.GetImageOSAsync.Value.Result != OSPlatform.Create(platform))
+
+        OSPlatform currentPlatform;
+        try
+        {
+            currentPlatform = TestcontainersUtils.GetImageOSAsync.Value.Result;
+        }
+        catch
+        {
+            Skip = $"Only run test when Docker is installed.";
+            return;
+        }
+
+        if (currentPlatform != OSPlatform.Create(platform))
         {
             Skip = $"Only run test when Docker OS Platform {platform} is used.";
         }

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

@@ -106,6 +106,15 @@ public class WireMockMiddlewareTests
     [Fact]
     public async Task WireMockMiddleware_Invoke_NoMatch()
     {
+        // Arrange
+        var inititalDateTime = new DateTime(2027, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+        var responseDateTime = new DateTime(2027, 1, 1, 0, 0, 42, DateTimeKind.Utc);
+
+        _dateTimeUtilsMock.Reset();
+        _dateTimeUtilsMock.SetupSequence(d => d.UtcNow)
+            .Returns(inititalDateTime)
+            .Returns(responseDateTime);
+
         // Act
         await _sut.Invoke(_contextMock.Object);
 
@@ -115,7 +124,7 @@ public class WireMockMiddlewareTests
         Expression<Func<ResponseMessage, bool>> match = r =>
             (int)r.StatusCode! == 404 &&
             ((StatusModel)r.BodyData!.BodyAsJson!).Status == "No matching mapping found" &&
-            r.DateTime == UtcNow;
+            r.DateTime == responseDateTime;
         _responseMapperMock.Verify(m => m.MapAsync(It.Is(match), It.IsAny<HttpResponse>()), Times.Once);
     }
 

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

@@ -8,6 +8,8 @@ using WireMock.Util;
 using WireMock.Handlers;
 using Moq;
 using Microsoft.AspNetCore.Http;
+using Newtonsoft.Json;
+using Scriban.Runtime;
 
 namespace WireMock.Net.Tests.ResponseBuilders;
 
@@ -65,5 +67,50 @@ public class ResponseWithScribanTests
         // Assert
         response.Message.BodyData.BodyAsString.Should().Be("test http://localhost/foo /foo POSt");
     }
+
+    [Theory]
+    [InlineData(TransformerType.Scriban)]
+    [InlineData(TransformerType.ScribanDotLiquid)]
+    public async Task Response_ProvideResponse_WithScribanRegistrationCallback_UsesCustomFunctionInBodyAndHeaders(TransformerType transformerType)
+    {
+        // Arrange
+        _settings.ScribanRegistrationCallback = (scriptObject, _) =>
+            ((ScriptObject)scriptObject).Import("fake_name", new Func<string>(() => "Jane Doe"));
+
+        var request = new RequestMessage(new UrlDetails("http://localhost/foo"), "GET", ClientIp);
+
+        var responseBuilder = Response.Create()
+            .WithBody("{{ fake_name }} {{ request.Path }}")
+            .WithHeader("x-name", "{{ fake_name }}")
+            .WithTransformer(transformerType);
+
+        // Act
+        var response = await responseBuilder.ProvideResponseAsync(_mappingMock.Object, Mock.Of<HttpContext>(), request, _settings);
+
+        // Assert
+        response.Message.BodyData!.BodyAsString.Should().Be("Jane Doe /foo");
+        response.Message.Headers!["x-name"].Should().ContainSingle().Which.Should().Be("Jane Doe");
+    }
+
+    [Theory]
+    [InlineData(TransformerType.Scriban)]
+    [InlineData(TransformerType.ScribanDotLiquid)]
+    public async Task Response_ProvideResponse_WithScribanRegistrationCallback_UsesCustomFunctionInBodyAsJson(TransformerType transformerType)
+    {
+        // Arrange
+        _settings.WithScribanRegistration((scriptObject, _) => scriptObject.Import("fake_name", new Func<string>(() => "Jane Doe")));
+
+        var request = new RequestMessage(new UrlDetails("http://localhost/foo"), "GET", ClientIp);
+
+        var responseBuilder = Response.Create()
+            .WithBodyAsJson(new { name = "{{ fake_name }}", path = "{{ request.Path }}" })
+            .WithTransformer(transformerType);
+
+        // Act
+        var response = await responseBuilder.ProvideResponseAsync(_mappingMock.Object, Mock.Of<HttpContext>(), request, _settings);
+
+        // Assert
+        JsonConvert.SerializeObject(response.Message.BodyData!.BodyAsJson).Should().Be("{\"name\":\"Jane Doe\",\"path\":\"/foo\"}");
+    }
 }
 

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

@@ -0,0 +1,82 @@
+// Copyright © WireMock.Net
+
+using Moq;
+using Scriban.Runtime;
+using WireMock.Handlers;
+using WireMock.Settings;
+
+namespace WireMock.Net.Tests.Settings;
+
+public class WireMockServerSettingsExtensionsTests
+{
+    private readonly IFileSystemHandler _fileSystemHandler = Mock.Of<IFileSystemHandler>();
+
+    [Fact]
+    public void WithScribanRegistration_SetsCallbackWhichPassesTypedScriptObjectAndFileSystemHandler()
+    {
+        // Arrange
+        ScriptObject? receivedScriptObject = null;
+        IFileSystemHandler? receivedFileSystemHandler = null;
+        var settings = new WireMockServerSettings();
+        var scriptObject = new ScriptObject();
+
+        // Act
+        var result = settings.WithScribanRegistration((so, fs) =>
+        {
+            receivedScriptObject = so;
+            receivedFileSystemHandler = fs;
+        });
+        settings.ScribanRegistrationCallback!(scriptObject, _fileSystemHandler);
+
+        // Assert
+        result.Should().BeSameAs(settings);
+        receivedScriptObject.Should().BeSameAs(scriptObject);
+        receivedFileSystemHandler.Should().BeSameAs(_fileSystemHandler);
+    }
+
+    [Fact]
+    public void WithScribanRegistration_WithExistingCallback_InvokesBothInRegistrationOrder()
+    {
+        // Arrange
+        var calls = new List<string>();
+        var settings = new WireMockServerSettings
+        {
+            ScribanRegistrationCallback = (_, _) => calls.Add("existing")
+        };
+
+        // Act
+        settings
+            .WithScribanRegistration((_, _) => calls.Add("first"))
+            .WithScribanRegistration((_, _) => calls.Add("second"));
+        settings.ScribanRegistrationCallback!(new ScriptObject(), _fileSystemHandler);
+
+        // Assert
+        calls.Should().Equal("existing", "first", "second");
+    }
+
+    [Fact]
+    public void WithScribanRegistration_WithNullSettings_ThrowsArgumentNullException()
+    {
+        // Arrange
+        WireMockServerSettings settings = null!;
+
+        // Act
+        Action act = () => settings.WithScribanRegistration((_, _) => { });
+
+        // Assert
+        act.Should().Throw<ArgumentNullException>();
+    }
+
+    [Fact]
+    public void WithScribanRegistration_WithNullCallback_ThrowsArgumentNullException()
+    {
+        // Arrange
+        var settings = new WireMockServerSettings();
+
+        // Act
+        Action act = () => settings.WithScribanRegistration(null!);
+
+        // Assert
+        act.Should().Throw<ArgumentNullException>();
+    }
+}

test/WireMock.Net.Tests/Testcontainers/TestcontainersTests.cs

@@ -21,7 +21,7 @@ public class TestcontainersTests(ITestOutputHelper testOutputHelper)
         TimestampFormat = "yyy-MM-dd HH:mm:ss.fff"
     });
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_And_StartAsync_and_StopAsync()
     {
         // Act
@@ -57,7 +57,7 @@ public class TestcontainersTests(ITestOutputHelper testOutputHelper)
         await StopAsync(wireMockContainer);
     }
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_WithImage_And_StartAsync_and_StopAsync()
     {
         // Arrange
@@ -83,7 +83,7 @@ public class TestcontainersTests(ITestOutputHelper testOutputHelper)
         await StopAsync(wireMockContainer);
     }
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_WithImageAsText_And_StartAsync_and_StopAsync()
     {
         // Arrange

test/WireMock.Net.Tests/Testcontainers/TestcontainersTestsGrpc.cs

@@ -10,6 +10,7 @@ using Meziantou.Extensions.Logging.Xunit.v3;
 using Microsoft.Extensions.Logging;
 using WireMock.Constants;
 using WireMock.Net.Testcontainers;
+using WireMock.Net.Tests.Facts;
 using WireMock.Util;
 
 namespace WireMock.Net.Tests.Testcontainers;
@@ -25,7 +26,7 @@ public class TestcontainersTestsGrpc(ITestOutputHelper testOutputHelper)
         TimestampFormat = "yyy-MM-dd HH:mm:ss.fff"
     });
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_Grpc_TestPortsAndUrls1()
     {
         // Arrange
@@ -82,7 +83,7 @@ public class TestcontainersTestsGrpc(ITestOutputHelper testOutputHelper)
         }
     }
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_Grpc_TestPortsAndUrls2()
     {
         // Arrange
@@ -136,7 +137,7 @@ public class TestcontainersTestsGrpc(ITestOutputHelper testOutputHelper)
         }
     }
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_Grpc_ProtoDefinitionFromJson_UsingGrpcGeneratedClient()
     {
         var wireMockContainer = await Given_WireMockContainerIsStartedForHttpAndGrpcAsync();
@@ -150,7 +151,7 @@ public class TestcontainersTestsGrpc(ITestOutputHelper testOutputHelper)
         await StopAsync(wireMockContainer);
     }
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_Grpc_ProtoDefinitionAtServerLevel_UsingGrpcGeneratedClient()
     {
         var wireMockContainer = await Given_WireMockContainerWithProtoDefinitionAtServerLevelIsStartedForHttpAndGrpcAsync();
@@ -164,7 +165,7 @@ public class TestcontainersTestsGrpc(ITestOutputHelper testOutputHelper)
         await StopAsync(wireMockContainer);
     }
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_Grpc_ProtoDefinitionAtServerLevel_UsingGrpcGeneratedClient_AndWithWatchStaticMappings()
     {
         var wireMockContainer = await Given_WireMockContainerWithProtoDefinitionAtServerLevelWithWatchStaticMappingsIsStartedForHttpAndGrpcAsync();

test/WireMock.Net.Tests/Transformers/Scriban/ScribanContextFactoryTests.cs

@@ -1,7 +1,9 @@
 // Copyright © WireMock.Net
 
 using Moq;
+using Scriban.Runtime;
 using WireMock.Handlers;
+using WireMock.Settings;
 using WireMock.Transformers.Scriban;
 using WireMock.Types;
 
@@ -17,23 +19,79 @@ namespace WireMock.Net.Tests.Transformers.Scriban
         public void Create_With_Scriban_TransformerType_Creates_ITransformerContext(TransformerType transformerType)
         {
             // Arrange
-            var sut = new ScribanContextFactory(_fileSystemHandlerMock.Object, transformerType);
+            var settings = new WireMockServerSettings
+            {
+                FileSystemHandler = _fileSystemHandlerMock.Object
+            };
+            var sut = new ScribanContextFactory(settings, transformerType);
 
             // Act
             var result = sut.Create();
 
             // Assert
             result.Should().NotBeNull();
+            result.FileSystemHandler.Should().BeSameAs(_fileSystemHandlerMock.Object);
         }
 
         [Fact]
         public void Create_With_Invalid_TransformerType_Throws_Exception()
         {
+            // Arrange
+            var settings = new WireMockServerSettings
+            {
+                FileSystemHandler = _fileSystemHandlerMock.Object
+            };
+
             // Act
-            Action action = () => new ScribanContextFactory(_fileSystemHandlerMock.Object, TransformerType.Handlebars);
+            Action action = () => new ScribanContextFactory(settings, TransformerType.Handlebars);
 
             // Assert
             action.Should().Throw<Exception>();
         }
+
+        [Theory]
+        [InlineData(TransformerType.Scriban)]
+        [InlineData(TransformerType.ScribanDotLiquid)]
+        public void Create_WithScribanRegistrationCallback_InvokesCallbackOnceWithScriptObjectAndFileSystemHandler(TransformerType transformerType)
+        {
+            // Arrange
+            var calls = new List<(object ScriptObject, IFileSystemHandler FileSystemHandler)>();
+            var settings = new WireMockServerSettings
+            {
+                FileSystemHandler = _fileSystemHandlerMock.Object,
+                ScribanRegistrationCallback = (scriptObject, fileSystemHandler) => calls.Add((scriptObject, fileSystemHandler))
+            };
+            var sut = new ScribanContextFactory(settings, transformerType);
+
+            // Act
+            var result = sut.Create();
+
+            // Assert
+            result.Should().NotBeNull();
+            calls.Should().ContainSingle();
+            calls[0].ScriptObject.Should().BeOfType<ScriptObject>();
+            calls[0].FileSystemHandler.Should().BeSameAs(_fileSystemHandlerMock.Object);
+        }
+
+        [Fact]
+        public void Create_CalledTwice_InvokesScribanRegistrationCallbackWithNewScriptObjectEachTime()
+        {
+            // Arrange
+            var scriptObjects = new List<object>();
+            var settings = new WireMockServerSettings
+            {
+                FileSystemHandler = _fileSystemHandlerMock.Object,
+                ScribanRegistrationCallback = (scriptObject, _) => scriptObjects.Add(scriptObject)
+            };
+            var sut = new ScribanContextFactory(settings, TransformerType.Scriban);
+
+            // Act
+            sut.Create();
+            sut.Create();
+
+            // Assert
+            scriptObjects.Should().HaveCount(2);
+            scriptObjects[0].Should().NotBeSameAs(scriptObjects[1]);
+        }
     }
 }

test/WireMock.Net.Tests/Transformers/Scriban/ScribanContextTests.cs

@@ -0,0 +1,165 @@
+// Copyright © WireMock.Net
+
+using Moq;
+using Scriban.Runtime;
+using WireMock.Handlers;
+using WireMock.Models;
+using WireMock.Transformers;
+using WireMock.Transformers.Scriban;
+using WireMock.Types;
+using WireMock.Util;
+
+namespace WireMock.Net.Tests.Transformers.Scriban;
+
+public class ScribanContextTests
+{
+    private readonly IFileSystemHandler _fileSystemHandler = Mock.Of<IFileSystemHandler>();
+
+    [Theory]
+    [InlineData(TransformerType.Scriban)]
+    [InlineData(TransformerType.ScribanDotLiquid)]
+    public void ParseAndRender_WithCustomFunction_RendersFunctionResult(TransformerType transformerType)
+    {
+        // Arrange
+        var customGlobals = new ScriptObject();
+        customGlobals.Import("fake_name", new Func<string>(() => "Jane Doe"));
+        var sut = new ScribanContext(_fileSystemHandler, transformerType, customGlobals);
+
+        // Act
+        var result = sut.ParseAndRender("Hello {{ fake_name }} at {{ request.Path }}", CreateModel());
+
+        // Assert
+        result.Should().Be("Hello Jane Doe at /foo/bar");
+    }
+
+    [Fact]
+    public void ParseAndRender_Scriban_WithCustomFunctionWithArgument_RendersFunctionResult()
+    {
+        // Arrange
+        var customGlobals = new ScriptObject();
+        customGlobals.Import("greet", new Func<string, string>(name => $"Hello {name}"));
+        var sut = new ScribanContext(_fileSystemHandler, TransformerType.Scriban, customGlobals);
+
+        // Act
+        var result = sut.ParseAndRender("{{ greet request.Method }}", CreateModel());
+
+        // Assert
+        result.Should().Be("Hello GET");
+    }
+
+    [Fact]
+    public void ParseAndRender_ScribanDotLiquid_WithCustomFunctionAsFilter_RendersFunctionResult()
+    {
+        // Arrange
+        var customGlobals = new ScriptObject();
+        customGlobals.Import("greet", new Func<string, string>(name => $"Hello {name}"));
+        var sut = new ScribanContext(_fileSystemHandler, TransformerType.ScribanDotLiquid, customGlobals);
+
+        // Act
+        var result = sut.ParseAndRender("{{ request.Method | greet }}", CreateModel());
+
+        // Assert
+        result.Should().Be("Hello GET");
+    }
+
+    [Theory]
+    [InlineData(TransformerType.Scriban)]
+    [InlineData(TransformerType.ScribanDotLiquid)]
+    public void ParseAndRender_WithCustomGlobalNamedLikeModelMember_ModelTakesPrecedence(TransformerType transformerType)
+    {
+        // Arrange
+        var customGlobals = new ScriptObject();
+        customGlobals.SetValue("request", "custom", false);
+        customGlobals.SetValue("other", "custom", false);
+        var sut = new ScribanContext(_fileSystemHandler, transformerType, customGlobals);
+
+        // Act
+        var result = sut.ParseAndRender("{{ request.Path }} {{ other }}", CreateModel());
+
+        // Assert
+        result.Should().Be("/foo/bar custom");
+    }
+
+    [Theory]
+    [InlineData(TransformerType.Scriban)]
+    [InlineData(TransformerType.ScribanDotLiquid)]
+    public void ParseAndRender_WithCustomGlobalNamedLikeBuiltin_CustomGlobalTakesPrecedence(TransformerType transformerType)
+    {
+        // Arrange
+        var customGlobals = new ScriptObject();
+        customGlobals.SetValue("date", "custom date", false);
+        var sut = new ScribanContext(_fileSystemHandler, transformerType, customGlobals);
+
+        // Act
+        var result = sut.ParseAndRender("{{ date }}", CreateModel());
+
+        // Assert
+        result.Should().Be("custom date");
+    }
+
+    [Fact]
+    public void ParseAndRender_WithTemplateAssignment_DoesNotMutateCustomGlobals()
+    {
+        // Arrange
+        var customGlobals = new ScriptObject();
+        customGlobals.SetValue("x", "custom", false);
+        var sut = new ScribanContext(_fileSystemHandler, TransformerType.Scriban, customGlobals);
+
+        // Act
+        var first = sut.ParseAndRender("{{ x = 'assigned'; x }} {{ y = 1; y }}", CreateModel());
+        var second = sut.ParseAndRender("{{ x }}", CreateModel());
+
+        // Assert
+        first.Should().Be("assigned 1");
+        second.Should().Be("custom");
+        customGlobals.Keys.Should().BeEquivalentTo("x");
+        customGlobals["x"].Should().Be("custom");
+    }
+
+    [Theory]
+    [InlineData(TransformerType.Scriban, "{{ request.Url }} {{ request.Path }} {{ request.Method }}")]
+    [InlineData(TransformerType.Scriban, "{{ request.PathSegments[1] }} {{ request.Headers.Accept }}")]
+    [InlineData(TransformerType.Scriban, "{{ for s in request.PathSegments }}[{{ s }}]{{ end }}")]
+    [InlineData(TransformerType.Scriban, "{{ request.Body | string.upcase }} {{ data.Id }}")]
+    [InlineData(TransformerType.Scriban, "{{ x = 5; x * 2 }}")]
+    [InlineData(TransformerType.ScribanDotLiquid, "{{ request.Url }} {{ request.Path }} {{ request.Method }}")]
+    [InlineData(TransformerType.ScribanDotLiquid, "{% for s in request.PathSegments %}[{{ s }}]{% endfor %}")]
+    [InlineData(TransformerType.ScribanDotLiquid, "{{ request.Body | upcase }} {{ data.Id }}")]
+    [InlineData(TransformerType.ScribanDotLiquid, "{% assign x = 5 %}{{ x | times: 2 }}")]
+    public void ParseAndRender_WithEmptyCustomGlobals_RendersSameAsWithoutCustomGlobals(TransformerType transformerType, string template)
+    {
+        // Arrange
+        var model = CreateModel();
+        var withoutCustomGlobals = new ScribanContext(_fileSystemHandler, transformerType);
+        var withCustomGlobals = new ScribanContext(_fileSystemHandler, transformerType, new ScriptObject());
+
+        // Act
+        var expected = withoutCustomGlobals.ParseAndRender(template, model);
+        var result = withCustomGlobals.ParseAndRender(template, model);
+
+        // Assert
+        expected.Should().NotBeNullOrWhiteSpace();
+        result.Should().Be(expected);
+    }
+
+    private static TransformModel CreateModel()
+    {
+        var body = new BodyData
+        {
+            BodyAsString = "hello",
+            DetectedBodyType = BodyType.String
+        };
+        var headers = new Dictionary<string, string[]>
+        {
+            { "Accept", ["application/json"] }
+        };
+        var request = new RequestMessage(new UrlDetails("http://localhost/foo/bar"), "GET", "::1", body, headers);
+
+        return new TransformModel
+        {
+            mapping = Mock.Of<IMapping>(),
+            request = request,
+            data = new { Id = 42 }
+        };
+    }
+}

test/WireMock.Net.Tests/WireMockServer.Proxy.cs

@@ -18,6 +18,7 @@ using WireMock.Util;
 
 namespace WireMock.Net.Tests;
 
+[Collection(nameof(WireMockServerProxyTests))]
 public class WireMockServerProxyTests
 {
     private readonly CancellationToken _ct = TestContext.Current.CancellationToken;
@@ -58,12 +59,13 @@ public class WireMockServerProxyTests
     public async Task WireMockServer_Proxy_AdminFalse_With_SaveMapping_Is_True_And_SaveMappingToFile_Is_False_Should_AddInternalMappingOnly()
     {
         // Assign
+        using var target = StartProxyTargetServer();
         var cancellationToken = TestContext.Current.CancellationToken;
         var settings = new WireMockServerSettings
         {
             ProxyAndRecordSettings = new ProxyAndRecordSettings
             {
-                Url = "http://www.google.com",
+                Url = target.Url!,
                 SaveMapping = true,
                 SaveMappingToFile = false,
                 ExcludedHeaders = ["Connection"] // Needed for .NET 4.5.x and 4.6.x
@@ -92,12 +94,13 @@ public class WireMockServerProxyTests
     public async Task WireMockServer_Proxy_AdminTrue_With_SaveMapping_Is_True_And_SaveMappingToFile_Is_False_Should_AddInternalMappingOnly()
     {
         // Assign
+        using var target = StartProxyTargetServer();
         var cancellationToken = TestContext.Current.CancellationToken;
         var settings = new WireMockServerSettings
         {
             ProxyAndRecordSettings = new ProxyAndRecordSettings
             {
-                Url = "http://www.google.com",
+                Url = target.Url!,
                 SaveMapping = true,
                 SaveMappingToFile = false,
                 ExcludedHeaders = ["Connection"] // Needed for .NET 4.5.x and 4.6.x
@@ -184,6 +187,7 @@ public class WireMockServerProxyTests
     public async Task WireMockServer_Proxy_With_SaveMapping_Is_False_And_SaveMappingToFile_Is_True_ShouldSaveMappingToFile()
     {
         // Assign
+        using var target = StartProxyTargetServer();
         var fileSystemHandlerMock = new Mock<IFileSystemHandler>();
         fileSystemHandlerMock.Setup(f => f.GetMappingFolder()).Returns("m");
 
@@ -191,7 +195,7 @@ public class WireMockServerProxyTests
         {
             ProxyAndRecordSettings = new ProxyAndRecordSettings
             {
-                Url = "http://www.google.com",
+                Url = target.Url!,
                 SaveMapping = false,
                 SaveMappingToFile = true
             },
@@ -220,6 +224,7 @@ public class WireMockServerProxyTests
     public async Task WireMockServer_Proxy_With_SaveMappingForStatusCodePattern_Is_False_Should_Not_SaveMapping()
     {
         // Assign
+        using var target = StartProxyTargetServer();
         var fileSystemHandlerMock = new Mock<IFileSystemHandler>();
         fileSystemHandlerMock.Setup(f => f.GetMappingFolder()).Returns("m");
 
@@ -227,7 +232,7 @@ public class WireMockServerProxyTests
         {
             ProxyAndRecordSettings = new ProxyAndRecordSettings
             {
-                Url = "http://www.google.com",
+                Url = target.Url!,
                 SaveMapping = true,
                 SaveMappingToFile = true,
                 SaveMappingForStatusCodePattern = "999" // Just make sure that we don't want this mapping
@@ -257,6 +262,7 @@ public class WireMockServerProxyTests
     public async Task WireMockServer_Proxy_With_DoNotSaveMappingForHttpMethod_Should_Not_SaveMapping()
     {
         // Assign
+        using var target = StartProxyTargetServer();
         var fileSystemHandlerMock = new Mock<IFileSystemHandler>();
         fileSystemHandlerMock.Setup(f => f.GetMappingFolder()).Returns("m");
 
@@ -264,7 +270,7 @@ public class WireMockServerProxyTests
         {
             ProxyAndRecordSettings = new ProxyAndRecordSettings
             {
-                Url = "http://www.google.com",
+                Url = target.Url!,
                 SaveMapping = true,
                 SaveMappingToFile = true,
                 SaveMappingSettings = new ProxySaveMappingSettings
@@ -297,11 +303,12 @@ public class WireMockServerProxyTests
     public async Task WireMockServer_Proxy_Should_log_proxied_requests()
     {
         // Assign
+        using var target = StartProxyTargetServer();
         var settings = new WireMockServerSettings
         {
             ProxyAndRecordSettings = new ProxyAndRecordSettings
             {
-                Url = "http://www.google.com",
+                Url = target.Url!,
                 SaveMapping = true,
                 SaveMappingToFile = false
             }
@@ -327,12 +334,13 @@ public class WireMockServerProxyTests
     public async Task WireMockServer_Proxy_Should_proxy_responses()
     {
         // Assign
+        using var target = StartProxyTargetServer();
         var cancellationToken = TestContext.Current.CancellationToken;
         string path = $"/prx_{Guid.NewGuid()}";
         var server = WireMockServer.Start();
         server
             .Given(Request.Create().WithPath(path))
-            .RespondWith(Response.Create().WithProxy("http://www.google.com"));
+            .RespondWith(Response.Create().WithProxy(target.Url!));
 
         // Act
         var requestMessage = new HttpRequestMessage
@@ -348,7 +356,7 @@ public class WireMockServerProxyTests
         // Assert
         server.Mappings.Should().HaveCount(1);
         server.LogEntries.Should().HaveCount(1);
-        content.Should().Contain("google");
+        content.Should().Be(ProxyTargetBody);
 
         server.Stop();
     }
@@ -946,6 +954,20 @@ public class WireMockServerProxyTests
         server.LogEntries.Should().HaveCount(1);
         server.Stop();
     }
+
+    private const string ProxyTargetBody = "response from proxy target";
+
+    private static WireMockServer StartProxyTargetServer()
+    {
+        var target = WireMockServer.Start();
+        target
+            .Given(Request.Create().WithPath("/*"))
+            .RespondWith(Response.Create()
+                .WithStatusCode(HttpStatusCode.OK)
+                .WithBody(ProxyTargetBody));
+
+        return target;
+    }
 }
 
 

test/WireMock.Net.Tests/WireMockServer.Proxy2.cs

@@ -46,5 +46,3 @@ public class WireMockServerProxy2Tests
         serverAsProxy.Dispose();
     }
 }
-
-

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

@@ -1,13 +1,18 @@
 // Copyright © WireMock.Net
 
+using System.Net.Http;
 using Moq;
 
+using Scriban.Runtime;
 using WireMock.Authentication;
 using WireMock.Constants;
 using WireMock.Logging;
 using WireMock.Owin;
+using WireMock.RequestBuilders;
+using WireMock.ResponseBuilders;
 using WireMock.Server;
 using WireMock.Settings;
+using WireMock.Types;
 
 namespace WireMock.Net.Tests;
 
@@ -228,5 +233,33 @@ public class WireMockServerSettingsTests
         options.ActivityTracingOptions.Should().BeNull();
     }
 #endif
+
+    [Theory]
+    [InlineData(TransformerType.Scriban)]
+    [InlineData(TransformerType.ScribanDotLiquid)]
+    public async Task WireMockServer_WireMockServerSettings_ScribanRegistrationCallback_IsUsedInResponseTemplate(TransformerType transformerType)
+    {
+        // Arrange
+        var cancellationToken = TestContext.Current.CancellationToken;
+        var path = $"/scriban_{Guid.NewGuid()}";
+        using var server = WireMockServer.Start(new WireMockServerSettings
+        {
+            ScribanRegistrationCallback = (scriptObject, _) =>
+                ((ScriptObject)scriptObject).Import("fake_name", new Func<string>(() => "Jane Doe"))
+        });
+
+        server
+            .Given(Request.Create().WithPath(path).UsingGet())
+            .RespondWith(Response.Create()
+                .WithBody("{{ fake_name }} {{ request.Path }}")
+                .WithTransformer(transformerType)
+            );
+
+        // Act
+        var response = await new HttpClient().GetStringAsync(server.Url + path, cancellationToken);
+
+        // Assert
+        response.Should().Be($"Jane Doe {path}");
+    }
 }
 

test/WireMock.Net.Tests/WireMockServerTests.cs

@@ -640,6 +640,8 @@ public partial class WireMockServerTests(ITestOutputHelper testOutputHelper)
     [Fact]
     public async Task WireMockServer_Should_respond_to_ipv6_loopback()
     {
+        Assert.SkipUnless(Socket.OSSupportsIPv6, "IPv6 is not supported on this machine.");
+
         // Assign
         var server = WireMockServer.Start();