Add support for Faults (#360)

* FaultType - wip

* .

* copy fault

* tests

* code-factor

* more tests

* fix tests

* fixed

* remove RANDOM_DATA_THEN_CLOSE

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

@@ -6,6 +6,7 @@ using System.Threading.Tasks;
 using System.Threading;
 using WireMock.Handlers;
 using WireMock.Owin.Mappers;
+using WireMock.ResponseBuilders;
 using WireMock.Util;
 #if NET452
 using Microsoft.Owin;
@@ -97,7 +98,7 @@ namespace WireMock.Net.Tests.Owin.Mappers
         public async Task OwinResponseMapper_MapAsync_Body()
         {
             // Arrange
-            string body = "abc";
+            string body = "abcd";
             var responseMessage = new ResponseMessage
             {
                 Headers = new Dictionary<string, WireMockList<string>>(),
@@ -108,7 +109,7 @@ namespace WireMock.Net.Tests.Owin.Mappers
             await _sut.MapAsync(responseMessage, _responseMock.Object);
 
             // Assert
-            _stream.Verify(s => s.WriteAsync(new byte[] { 97, 98, 99 }, 0, 3, It.IsAny<CancellationToken>()), Times.Once);
+            _stream.Verify(s => s.WriteAsync(new byte[] { 97, 98, 99, 100 }, 0, 4, It.IsAny<CancellationToken>()), Times.Once);
         }
 
         [Fact]
@@ -167,5 +168,47 @@ namespace WireMock.Net.Tests.Owin.Mappers
             _headers.Verify(h => h.TryGetValue("h", out v), Times.Once);
 #endif
         }
+
+        [Fact]
+        public async Task OwinResponseMapper_MapAsync_WithFault_EMPTY_RESPONSE()
+        {
+            // Arrange
+            string body = "abc";
+            var responseMessage = new ResponseMessage
+            {
+                Headers = new Dictionary<string, WireMockList<string>>(),
+                BodyData = new BodyData { DetectedBodyType = BodyType.String, BodyAsString = body },
+                FaultType = FaultType.EMPTY_RESPONSE
+            };
+
+            // Act
+            await _sut.MapAsync(responseMessage, _responseMock.Object);
+
+            // Assert
+            _stream.Verify(s => s.WriteAsync(new byte[0], 0, 0, It.IsAny<CancellationToken>()), Times.Once);
+        }
+
+        [Theory]
+        [InlineData("abcd", BodyType.String)]
+        [InlineData("", BodyType.String)]
+        [InlineData(null, BodyType.None)]
+        public async Task OwinResponseMapper_MapAsync_WithFault_MALFORMED_RESPONSE_CHUNK(string body, BodyType detected)
+        {
+            // Arrange
+            var responseMessage = new ResponseMessage
+            {
+                Headers = new Dictionary<string, WireMockList<string>>(),
+                BodyData = new BodyData { DetectedBodyType = detected, BodyAsString = body },
+                StatusCode = 100,
+                FaultType = FaultType.MALFORMED_RESPONSE_CHUNK
+            };
+
+            // Act
+            await _sut.MapAsync(responseMessage, _responseMock.Object);
+
+            // Assert
+            _responseMock.VerifySet(r => r.StatusCode = 100, Times.Once);
+            _stream.Verify(s => s.WriteAsync(It.IsAny<byte[]>(), 0, It.Is<int>(count => count >= 0), It.IsAny<CancellationToken>()), Times.Once);
+        }
     }
 }

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

@@ -0,0 +1,49 @@
+using FluentAssertions;
+using Moq;
+using System.Threading.Tasks;
+using WireMock.Models;
+using WireMock.ResponseBuilders;
+using WireMock.Settings;
+using Xunit;
+
+namespace WireMock.Net.Tests.ResponseBuilders
+{
+    public class ResponseWithWithFaultTests
+    {
+        private readonly Mock<IFluentMockServerSettings> _settingsMock = new Mock<IFluentMockServerSettings>();
+        private const string ClientIp = "::1";
+
+        [Theory]
+        [InlineData(FaultType.EMPTY_RESPONSE)]
+        [InlineData(FaultType.MALFORMED_RESPONSE_CHUNK)]
+        public async Task Response_ProvideResponse_WithFault(FaultType faultType)
+        {
+            // Arrange
+            var request = new RequestMessage(new UrlDetails("http://localhost/fault"), "GET", ClientIp);
+
+            // Act
+            var response = Response.Create().WithFault(faultType);
+            var responseMessage = await response.ProvideResponseAsync(request, _settingsMock.Object);
+
+            // Assert
+            responseMessage.FaultType.Should().Be(faultType);
+            responseMessage.FaultPercentage.Should().BeNull();
+        }
+
+        [Theory]
+        [InlineData(FaultType.EMPTY_RESPONSE, 0.5)]
+        public async Task Response_ProvideResponse_WithFault_IncludingPercentage(FaultType faultType, double percentage)
+        {
+            // Arrange
+            var request = new RequestMessage(new UrlDetails("http://localhost/fault"), "GET", ClientIp);
+
+            // Act
+            var response = Response.Create().WithFault(faultType, percentage);
+            var responseMessage = await response.ProvideResponseAsync(request, _settingsMock.Object);
+
+            // Assert
+            responseMessage.FaultType.Should().Be(faultType);
+            responseMessage.FaultPercentage.Should().Be(percentage);
+        }
+    }
+}

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

@@ -1,6 +1,8 @@
-using NFluent;
+using FluentAssertions;
+using NFluent;
 using WireMock.Logging;
 using WireMock.Models;
+using WireMock.ResponseBuilders;
 using WireMock.Serialization;
 using WireMock.Util;
 using Xunit;
@@ -59,8 +61,7 @@ namespace WireMock.Net.Tests.Serialization
             // Assign
             var logEntry = new LogEntry
             {
-                RequestMessage = new RequestMessage(new UrlDetails("http://localhost"), "get", "::1"
-                ),
+                RequestMessage = new RequestMessage(new UrlDetails("http://localhost"), "get", "::1"),
                 ResponseMessage = new ResponseMessage
                 {
                     BodyData = new BodyData
@@ -88,5 +89,32 @@ namespace WireMock.Net.Tests.Serialization
             Check.That(result.Response.BodyAsJson).IsNull();
             Check.That(result.Response.BodyAsFile).IsEqualTo("test");
         }
+
+        [Fact]
+        public void LogEntryMapper_Map_LogEntry_WithFault()
+        {
+            // Assign
+            var logEntry = new LogEntry
+            {
+                RequestMessage = new RequestMessage(new UrlDetails("http://localhost"), "get", "::1"),
+                ResponseMessage = new ResponseMessage
+                {
+                    BodyData = new BodyData
+                    {
+                        DetectedBodyType = BodyType.File,
+                        BodyAsFile = "test"
+                    },
+                    FaultType = FaultType.EMPTY_RESPONSE,
+                    FaultPercentage = 0.5
+                }
+            };
+
+            // Act
+            var result = LogEntryMapper.Map(logEntry);
+
+            // Assert
+            result.Response.FaultType.Should().Be("EMPTY_RESPONSE");
+            result.Response.FaultPercentage.Should().Be(0.5);
+        }
     }
 }

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

@@ -41,7 +41,7 @@
     <PackageReference Include="FluentAssertions" Version="5.7.0" />
     <PackageReference Include="System.Threading" Version="4.3.0" />
     <PackageReference Include="RestEase" Version="1.4.7" />
-    <PackageReference Include="RandomDataGenerator.Net" Version="1.0.8" />
+    <PackageReference Include="RandomDataGenerator.Net" Version="1.0.10" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.9.0" />
     <PackageReference Include="Moq" Version="4.10.1" />
     <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />