public void ExecuteAsync_ExistingHandlerForRequest_ExecutedRequestHandlerToProduceResponse()
{
var requestExecutor = TestableRequestExecutor.Create();
var requestHandlerMock = new Mock <IRequestHandler>();
var requestId = Guid.NewGuid();
requestHandlerMock.SetupGet(r => r.RequestType).Returns("requestType");
requestHandlerMock.SetupGet(r => r.ArgumentsType).Returns(typeof(string));
requestExecutor.SerialiserMock.Setup(s => s.DeserialiseArguments("the args for the request", typeof(string))).Returns("the deserialised arguments");
requestHandlerMock.Setup(r => r.HandleRequestAsync(It.IsAny <Guid>(), It.IsAny <object>())).ReturnsAsync(new Response
{
Id = requestId
});
requestExecutor.Handlers.Add(requestHandlerMock.Object);
var cancelationTokenSource = new CancellationTokenSource();
requestExecutor.ExecuteAsync(new Request
{
Id = requestId,
Type = "requestType",
Args = "the args for the request"
}, cancelationTokenSource.Token).Wait();
var executedRequest = ((RequestExecutedChannelMessage)requestExecutor.DispatchMessagesSourceBlock.Receive()).RequestExecutedResult;
Assert.Equal(requestId, executedRequest.Response.Id);
Assert.False(executedRequest.IsFaulted);
Assert.Null(executedRequest.Exception);
requestHandlerMock.Verify(h => h.HandleRequestAsync(requestId, "the deserialised arguments"));
}
public void ExecuteAsync_HandlerThrowsException_ProducesFaultedRequestExecutedResultWithException()
{
var requestExecutor = TestableRequestExecutor.Create();
var cancelationTokenSource = new CancellationTokenSource();
var requestHandlerMock = new Mock <IRequestHandler>();
var requestId = Guid.NewGuid();
requestHandlerMock.SetupGet(r => r.RequestType).Returns("requestType");
requestHandlerMock
.Setup(h => h.HandleRequestAsync(It.IsAny <Guid>(), It.IsAny <object>()))
.ThrowsAsync(new InvalidOperationException("the exception thrown by the handler"));
requestExecutor.Handlers.Add(requestHandlerMock.Object);
requestExecutor.ExecuteAsync(new Request
{
Id = Guid.NewGuid(),
Type = "requestType"
}, cancelationTokenSource.Token).Wait();
var executedRequest = ((RequestExecutedChannelMessage)requestExecutor.DispatchMessagesSourceBlock.Receive()).RequestExecutedResult;
Assert.True(executedRequest.IsFaulted);
Assert.Null(executedRequest.Response);
Assert.IsType <HandlerFailedException>(executedRequest.Exception);
Assert.Equal("the exception thrown by the handler", executedRequest.Exception.InnerException.Message);
}
public void ExecuteAsync_Cancelled_ThrowsTaskCancelledException()
{
var requestExecutor = TestableRequestExecutor.Create();
var cancelationTokenSource = new CancellationTokenSource();
cancelationTokenSource.Cancel();
Assert.Throws <TaskCanceledException>(() => requestExecutor.ExecuteAsync(new Request
{
Id = Guid.NewGuid(),
Type = "requestType"
}, cancelationTokenSource.Token).GetAwaiter().GetResult());
}
public void ExecuteAsync_NoHandlers_CreatesResponseWithNoRequestHandlerFoundException()
{
var requestExecutor = TestableRequestExecutor.Create();
var cancelationTokenSource = new CancellationTokenSource();
requestExecutor.ExecuteAsync(new Request
{
Id = Guid.NewGuid(),
Type = "requestType"
}, cancelationTokenSource.Token).Wait();
var executedRequest = ((RequestExecutedChannelMessage)requestExecutor.DispatchMessagesSourceBlock.Receive()).RequestExecutedResult;
Assert.True(executedRequest.IsFaulted);
Assert.Null(executedRequest.Response);
Assert.IsType <NoRequestHandlerFoundException>(executedRequest.Exception);
}
public void ExecuteAsync_InvalidRequestArguments_ProducesFaultedRequestExecutedResultWithException()
{
var requestExecutor = TestableRequestExecutor.Create();
requestExecutor.SerialiserMock.Setup(s => s.DeserialiseArguments(It.IsAny <string>(), It.IsAny <Type>())).Throws <SerialiserException>();
var cancelationTokenSource = new CancellationTokenSource();
var requestHandlerMock = new Mock <IRequestHandler>();
var requestId = Guid.NewGuid();
requestHandlerMock.SetupGet(r => r.RequestType).Returns("requestType");
requestExecutor.Handlers.Add(requestHandlerMock.Object);
requestExecutor.ExecuteAsync(new Request
{
Id = Guid.NewGuid(),
Type = "requestType"
}, cancelationTokenSource.Token).Wait();
var executedRequest = ((RequestExecutedChannelMessage)requestExecutor.DispatchMessagesSourceBlock.Receive()).RequestExecutedResult;
Assert.True(executedRequest.IsFaulted);
Assert.Null(executedRequest.Response);
Assert.IsType <HandlerFailedException>(executedRequest.Exception);
Assert.IsType <SerialiserException>(executedRequest.Exception.InnerException);
}
