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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;
using System.Web.Http.Controllers;
using Moq;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Http.Tracing.Tracers
{
public class HttpActionInvokerTracerTest
{
private HttpActionContext _actionContext;
private ApiController _apiController;
public HttpActionInvokerTracerTest()
{
UsersController controller = new UsersController();
_apiController = controller;
Func<HttpResponseMessage> actionMethod = controller.Get;
_actionContext = ContextUtil.CreateActionContext(
ContextUtil.CreateControllerContext(instance: _apiController),
new ReflectedHttpActionDescriptor { MethodInfo = actionMethod.Method });
HttpRequestMessage request = new HttpRequestMessage();
_actionContext.ControllerContext.Request = request;
}
[Fact]
public void InvokeActionAsync_Calls_ActionDescriptor_ExecuteAsync()
{
// Arrange
Mock<HttpActionDescriptor> mockActionDescriptor = new Mock<HttpActionDescriptor>() { CallBase = true };
mockActionDescriptor.Setup(a => a.ActionName).Returns("mockAction");
mockActionDescriptor.Setup(a => a.GetParameters()).Returns(new Collection<HttpParameterDescriptor>(new HttpParameterDescriptor[0]));
mockActionDescriptor.Setup(a => a.ReturnType).Returns(typeof(void));
mockActionDescriptor.Setup(a => a.ResultConverter).Returns(new VoidResultConverter());
bool executeWasCalled = false;
mockActionDescriptor.Setup(a => a.ExecuteAsync(It.IsAny<HttpControllerContext>(), It.IsAny<IDictionary<string, object>>()))
.Returns(() => TaskHelpers.FromResult<object>(null))
.Callback(() => { executeWasCalled = true; });
HttpActionContext context = ContextUtil.CreateActionContext(
ContextUtil.CreateControllerContext(instance: _apiController),
mockActionDescriptor.Object);
HttpActionInvokerTracer tracer = new HttpActionInvokerTracer(new ApiControllerActionInvoker(), new TestTraceWriter());
// Act
((IHttpActionInvoker)tracer).InvokeActionAsync(context, CancellationToken.None).Wait();
// Assert
Assert.True(executeWasCalled);
}
[Fact]
public void InvokeActionAsync_Traces_Begin_And_End_Info()
{
// Arrange
TestTraceWriter traceWriter = new TestTraceWriter();
HttpActionInvokerTracer tracer = new HttpActionInvokerTracer(new ApiControllerActionInvoker(), traceWriter);
TraceRecord[] expectedTraces = new TraceRecord[]
{
new TraceRecord(_actionContext.Request, TraceCategories.ActionCategory, TraceLevel.Info) { Kind = TraceKind.Begin },
new TraceRecord(_actionContext.Request, TraceCategories.ActionCategory, TraceLevel.Info) { Kind = TraceKind.End }
};
// Act
Task task = ((IHttpActionInvoker)tracer).InvokeActionAsync(_actionContext, CancellationToken.None);
task.Wait();
// Assert
Assert.Equal(2, traceWriter.Traces.Count);
Assert.Equal<TraceRecord>(expectedTraces, traceWriter.Traces, new TraceRecordComparer());
}
[Fact]
public void InvokeActionAsync_Returns_Cancelled_Inner_Task()
{
// Arrange
CancellationTokenSource cancellationSource = new CancellationTokenSource();
cancellationSource.Cancel();
HttpActionInvokerTracer tracer = new HttpActionInvokerTracer(new ApiControllerActionInvoker(), new TestTraceWriter());
// Act
var response = ((IHttpActionInvoker)tracer).InvokeActionAsync(_actionContext, cancellationSource.Token);
// Assert
Assert.Throws<TaskCanceledException>(() => { response.Wait(); });
Assert.Equal<TaskStatus>(TaskStatus.Canceled, response.Status);
}
[Fact]
public void InvokeActionAsync_Traces_Cancelled_Inner_Task()
{
// Arrange
TestTraceWriter traceWriter = new TestTraceWriter();
HttpActionInvokerTracer tracer = new HttpActionInvokerTracer(new ApiControllerActionInvoker(), traceWriter);
CancellationTokenSource cancellationSource = new CancellationTokenSource();
cancellationSource.Cancel();
TraceRecord[] expectedTraces = new TraceRecord[]
{
new TraceRecord(_actionContext.Request, TraceCategories.ActionCategory, TraceLevel.Info) { Kind = TraceKind.Begin },
new TraceRecord(_actionContext.Request, TraceCategories.ActionCategory, TraceLevel.Warn) { Kind = TraceKind.End }
};
// Act
var response = ((IHttpActionInvoker)tracer).InvokeActionAsync(_actionContext, cancellationSource.Token);
// Assert
Assert.Throws<TaskCanceledException>(() => { response.Wait(); });
Assert.Equal<TraceRecord>(expectedTraces, traceWriter.Traces, new TraceRecordComparer());
}
[Fact]
public void InvokeActionAsync_Returns_Faulted_Inner_Task()
{
// Arrange
Mock<ApiControllerActionInvoker> mockActionInvoker = new Mock<ApiControllerActionInvoker>() { CallBase = true };
InvalidOperationException expectedException = new InvalidOperationException("test message");
TaskCompletionSource<HttpResponseMessage> tcs = new TaskCompletionSource<HttpResponseMessage>(null);
tcs.TrySetException(expectedException);
mockActionInvoker.Setup(
a => a.InvokeActionAsync(It.IsAny<HttpActionContext>(), It.IsAny<CancellationToken>())).Returns(tcs.Task);
HttpActionInvokerTracer tracer = new HttpActionInvokerTracer(mockActionInvoker.Object, new TestTraceWriter());
// Act
var response = ((IHttpActionInvoker)tracer).InvokeActionAsync(_actionContext, CancellationToken.None);
// Assert
Assert.Throws<InvalidOperationException>(() => response.Wait());
Assert.Equal<TaskStatus>(TaskStatus.Faulted, response.Status);
Assert.Equal(expectedException.Message, response.Exception.GetBaseException().Message);
}
[Fact]
public void InvokeActionAsync_Traces_Faulted_Inner_Task()
{
// Arrange
Mock<ApiControllerActionInvoker> mockActionInvoker = new Mock<ApiControllerActionInvoker>() { CallBase = true };
InvalidOperationException expectedException = new InvalidOperationException("test message");
TaskCompletionSource<HttpResponseMessage> tcs = new TaskCompletionSource<HttpResponseMessage>(null);
tcs.TrySetException(expectedException);
mockActionInvoker.Setup(
a => a.InvokeActionAsync(It.IsAny<HttpActionContext>(), It.IsAny<CancellationToken>())).Returns(tcs.Task);
TestTraceWriter traceWriter = new TestTraceWriter();
HttpActionInvokerTracer tracer = new HttpActionInvokerTracer(mockActionInvoker.Object, traceWriter);
TraceRecord[] expectedTraces = new TraceRecord[]
{
new TraceRecord(_actionContext.Request, TraceCategories.ActionCategory, TraceLevel.Info) { Kind = TraceKind.Begin },
new TraceRecord(_actionContext.Request, TraceCategories.ActionCategory, TraceLevel.Error) { Kind = TraceKind.End }
};
// Act
var response = ((IHttpActionInvoker)tracer).InvokeActionAsync(_actionContext, CancellationToken.None);
// Assert
Assert.Throws<InvalidOperationException>(() => response.Wait());
Assert.Equal<TraceRecord>(expectedTraces, traceWriter.Traces, new TraceRecordComparer());
Assert.Equal(expectedException, traceWriter.Traces[1].Exception);
}
[Fact]
public void InvokeActionAsync_Throws_When_ActionContext_Is_Null()
{
// Arrange
HttpActionInvokerTracer tracer = new HttpActionInvokerTracer(new ApiControllerActionInvoker(), new TestTraceWriter());
// Act & Assert
Assert.ThrowsArgumentNull(
() => ((IHttpActionInvoker)tracer).InvokeActionAsync(null, CancellationToken.None),
"actionContext");
}
[Fact]
public void InvokeActionAsync_Throws_Exception_Thrown_From_Inner()
{
// Arrange
InvalidOperationException expectedException = new InvalidOperationException("test message");
Mock<ApiControllerActionInvoker> mockActionInvoker = new Mock<ApiControllerActionInvoker>() {CallBase = true};
mockActionInvoker.Setup(
a => a.InvokeActionAsync(It.IsAny<HttpActionContext>(), It.IsAny<CancellationToken>())).Throws(expectedException);
HttpActionInvokerTracer tracer = new HttpActionInvokerTracer(mockActionInvoker.Object, new TestTraceWriter());
// Act & Assert
InvalidOperationException thrownException = Assert.Throws<InvalidOperationException>(
() => ((IHttpActionInvoker)tracer).InvokeActionAsync(_actionContext, CancellationToken.None)
);
// Assert
Assert.Equal(expectedException, thrownException);
}
[Fact]
public void InvokeActionAsync_Traces_Exception_Thrown_From_Inner()
{
// Arrange
InvalidOperationException expectedException = new InvalidOperationException("test message");
Mock<ApiControllerActionInvoker> mockActionInvoker = new Mock<ApiControllerActionInvoker>() { CallBase = true };
mockActionInvoker.Setup(
a => a.InvokeActionAsync(It.IsAny<HttpActionContext>(), It.IsAny<CancellationToken>())).Throws(expectedException);
TestTraceWriter traceWriter = new TestTraceWriter();
HttpActionInvokerTracer tracer = new HttpActionInvokerTracer(mockActionInvoker.Object, traceWriter);
TraceRecord[] expectedTraces = new TraceRecord[]
{
new TraceRecord(_actionContext.Request, TraceCategories.ActionCategory, TraceLevel.Info) { Kind = TraceKind.Begin },
new TraceRecord(_actionContext.Request, TraceCategories.ActionCategory, TraceLevel.Error) { Kind = TraceKind.End }
};
// Act & Assert
Assert.Throws<InvalidOperationException>(
() => ((IHttpActionInvoker)tracer).InvokeActionAsync(_actionContext, CancellationToken.None)
);
// Assert
Assert.Equal<TraceRecord>(expectedTraces, traceWriter.Traces, new TraceRecordComparer());
Assert.Equal(expectedException, traceWriter.Traces[1].Exception);
}
}
}
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