public Task Should_Throw_When_Cancelled()
{
return(Assert.ThrowsAnyAsync <OperationCanceledException>(async() =>
{
var commandHandler = new TestCommandHandler(_outputHelper);
var registration = new CommandHandlerRegistration();
registration.Register(() => (ICommandAsyncHandler <DoSomethingForSpecifiedDurationCommand>)commandHandler);
var cts = new CancellationTokenSource();
var dispatcher = new CommandDispatcher(registration);
Task task = dispatcher.DispatchAsync(new DoSomethingForSpecifiedDurationCommand(2000), cts.Token);
cts.Cancel();
try
{
await task;
}
catch (Exception ex)
{
_outputHelper.WriteLine(ex.ToString());
throw;
}
}));
}
public async Task Failure_To_Send_On_Exception_Event_Will_Log_The_Exception()
{
//Arrange
const string exceptionMessage = "Test Exception";
var result = 0;
var testCommand =
new TestCommand(Guid.NewGuid(), Guid.NewGuid(), Guid.NewGuid(), () => { result = 10; });
var handler =
new TestCommandHandler(Mock.Of <IDbContext>(), _mockMessageDispatcher.Object, _mockEventLogger.Object)
{
CreateOnSuccessEvent = false
};
_mockMessageDispatcher.Setup(x => x.SendMessage(It.IsAny <Message>(), It.IsAny <CancellationToken>()))
.Throws(new Exception(exceptionMessage));
//Act
await handler.Handle(testCommand, CancellationToken.None);
//Assert
Assert.That(result, Is.EqualTo(10));
_mockMessageDispatcher.Verify(
x => x.SendMessage(It.IsAny <OnExceptionEvent>(), It.IsAny <CancellationToken>()), Times.Once);
//_mockEventLogger.Verify(x => x.Log(SeverityLevel.Error, It.Is<EventId>(i => i == EventId.BaseMessageError), It.Is<Type>(t => t == typeof(TestCommandHandler)), It.Is<Exception>(e => e.Message == exceptionMessage)));
}
public void cancel_should_not_cancel_others()
{
var bus = new CommandBus("local");
var handler = new CancelableTestCommandHandler();
bus.Subscribe((IHandleCommand <TestCommands.TestCommand>)handler);
bus.Subscribe((IHandleCommand <TestCommands.TestCommand2>)handler);
var handler2 = new TestCommandHandler();
bus.Subscribe((IHandleCommand <TestCommands.TestCommand3>)handler2);
var cmd1 = new TestCommands.TestCommand(Guid.NewGuid(), null);
var cmd2 = new TestCommands.TestCommand2(Guid.NewGuid(), null);
var cmd3 = new TestCommands.TestCommand3(Guid.NewGuid(), null);
Task.Delay(100).ContinueWith(t => bus.RequestCancel(cmd1));
Task.Run(() => bus.Fire(cmd2));
Task.Run(() => bus.Fire(cmd3));
Assert.Throws <CommandCanceledException>(
() =>
{
try
{
bus.Fire(cmd1);
}
catch (Exception ex)
{
throw ex.InnerException;
}
});
}
public Task Should_Check_For_Correct_Command_Type()
{
return(Assert.ThrowsAnyAsync <ArgumentException>(async() =>
{
var commandHandler = new TestCommandHandler(_testOutputHelper);
var registration = new CommandHandlerRegistration();
registration.Register(() => (ICommandHandler <DoSomethingCommand>)commandHandler);
CommandHandlerDelegate commandHandlerDelegate = registration.ResolveCommandHandler <DoSomethingCommand>();
Assert.NotNull(commandHandlerDelegate);
try
{
// This delegate handles DoSomethingCommand, but was passed in a DoSomethingWithCancellationCommand.
await commandHandlerDelegate.Invoke(new DoSomethingForSpecifiedDurationCommand(100));
}
catch (Exception ex)
{
_testOutputHelper.WriteLine(ex.ToString());
throw;
}
}));
}
public async Task Should_ExecuteScheduledJob()
{
bool canExecute = true;
string message = string.Empty;
var scheduledJob = Substitute.For <IScheduledJob>();
Func <IScheduledJob> _jobFactory = () => { return(scheduledJob); };
scheduledJob.ExecuteAsync().Returns(Task.FromResult <object>(null));
var item = new Item {
Name = "Test"
};
var command = new TestCommand(item, c => { canExecute = c; }, m => { message = m; });
var handler = new TestCommandHandler(_jobFactory);
handler.Handle(command);
Thread.Sleep(50);
await scheduledJob.Received().ExecuteAsync()
.ConfigureAwait(true);
Assert.AreSame(scheduledJob.Item, command.Item);
Assert.IsFalse(string.IsNullOrEmpty(message));
Assert.IsTrue(canExecute);
}
public async Task Handle_Failure_Should_ReturnUnit_Detail_NoValidatorsForTheRequest()
{
IPipelineBehavior <TestCommand, Unit> validationPipeline = new ValidationBehavior <TestCommand, Unit>(
new List <IValidator <TestCommand> >());
var testCommand = new TestCommand();
var testHandler = new TestCommandHandler();
var unit = await validationPipeline.Handle(testCommand,
public void Can_Be_Successfully_Constructed()
{
//Arrange
//Act
var handler = new TestCommandHandler(Mock.Of <IDbContext>(), Mock.Of <IMessageDispatcher>(), Mock.Of <IGWLogger <BaseMessageHandler <TestCommand> > >());
//Assert
Assert.That(handler, Is.Not.Null);
}
public void ShouldCallOnCommandExecuted()
{
var command = new TestCommand
{
Value = "Hello"
};
var commandHandler = new TestCommandHandler();
commandHandler.Execute(command);
Assert.AreEqual("Hello", commandHandler.AggregateRoot.Value);
}
public void noncancelable_commands_will_ignore_cancel()
{
var bus = new CommandBus("local");
var handler = new TestCommandHandler();
bus.Subscribe((IHandleCommand <TestCommands.TestCommand3>)handler);
var cmd = new TestCommands.TestCommand3(Guid.NewGuid(), null);
Task.Delay(100).ContinueWith(t => bus.RequestCancel(cmd));
bus.Fire(cmd);
}
public void CommandHandler_SubscribeShouldCallCommandBusSubscribe()
{
var commandBus = new Mock<ICommandBus>();
var commandHandler = new TestCommandHandler(commandBus.Object);
commandBus.Setup(x => x.Subscribe(commandHandler)).Verifiable();
commandHandler.Subscribe();
commandBus.Verify(x => x.Subscribe(commandHandler), Times.Once);
}
public async Task HandlerInvokerTest()
{
//ARRANGE
var result = 0;
var command = new TestCommand(Guid.NewGuid(), Guid.NewGuid());
var handler = new TestCommandHandler(() => result = 10);
var handlerInvoker = new HandlerInvoker();
//ACT
await handlerInvoker.InvokeHandlers(new[] { handler }, command);
//ASSERT
Assert.AreEqual(10, result);
}
public async Task Should_Invoke_Registered_Command_Handler()
{
var commandHandler = new TestCommandHandler(_outputHelper);
var registration = new CommandHandlerRegistration();
registration.Register(() => (ICommandAsyncHandler <DoSomethingCommand>)commandHandler);
var dispatcher = new CommandDispatcher(registration);
await dispatcher.DispatchAsync(new DoSomethingCommand());
Assert.Equal(1, commandHandler.HandledCommands.Count);
Assert.Contains(commandHandler.HandledCommands, c => c is DoSomethingCommand);
}
public async Task Given_TestCommand_When_SendAsync_Then_CommandHandlerIsFired()
{
//Arrange
var command = new TestCommand();
var commandHandler = new TestCommandHandler();
Func <Type, object> resolver = type => { return(commandHandler); };
var commandBus = new CommandBus(resolver);
//Act
await commandBus.SendAsync(command);
//Assert
Assert.That(commandHandler.IsFired, Is.True);
}
public async Task Handle_Success_Should_LogInitial_Detail_SpanishText()
{
var logger = Mock.Of <ILogger <TestCommand> >();
var requestInformation = new RequestInformation <TestCommand>();
var describer = new QuickerSpanishLoggingDescriber();
IPipelineBehavior <TestCommand, Unit> loggingPipeline = new LoggingBehavior <TestCommand, Unit>(
logger, requestInformation, describer);
var testCommand = new TestCommand();
var testHandler = new TestCommandHandler();
var unit = await loggingPipeline.Handle(testCommand,
public void ShouldEmitEventsToStream()
{
var streams = new InMemoryEventStreams();
var handler = new TestCommandHandler();
var command = new TestCommand {
Value = "test"
};
handler.Execute(command);
var stream = streams.GetStream("MyTestStream");
Assert.AreEqual(1, stream.Count, "stream.Count was not 1");
Assert.AreEqual("TestEvent", stream.First().EventName);
}
public void AuditDecorator_Calls_Command()
{
var commandHandler = new TestCommandHandler();
var command = new TestCommand("Value");
var decorator = new AuditDecorator <TestCommand>(_repository, _serializer)
{
Handler = commandHandler
};
var result = decorator.Execute(command);
result.Errors.Should().HaveCount(1);
result.Errors.First().Message.Should().Be("Error success");
}
public async Task ExecuteAsync_WhenHandlerIsRegistered_ExecutesHandler()
{
var handlerWasCalled = false;
var handler = new TestCommandHandler(() => handlerWasCalled = true);
var serviceProvider = Substitute.For <IServiceProvider>();
serviceProvider.GetService(typeof(ICommandHandler <TestCommand>))
.Returns(handler);
var commandExecutor = new CommandDispatcher(serviceProvider);
await commandExecutor.ExecuteAsync(new TestCommand());
handlerWasCalled.Should().BeTrue();
}
public void CoreDispatcher_RemoveHandlerFromDispatcher_CommandHandler()
{
var h = new TestCommandHandler();
CoreDispatcher.AddHandlerToDispatcher(h);
var coreHandler = CoreDispatcher.TryGetHandlersForCommandType(typeof(TestCommand));
coreHandler.Should().NotBeEmpty();
CoreDispatcher.RemoveHandlerFromDispatcher(h);
coreHandler = CoreDispatcher.TryGetHandlersForCommandType(typeof(TestCommand));
coreHandler.Should().BeEmpty();
}
public void HandlerDelegateFactoryTest()
{
//ARRANGE
var result = 0;
var command = new TestCommand(Guid.NewGuid(), Guid.NewGuid());
var handler = new TestCommandHandler(() => result = 10);
//ACT
var del = HandlerDelegateFactory.GetdMessageHandlerDelegate(typeof(TestCommandHandler), typeof(TestCommand));
del(handler, new[] { command });
//ASSERT
Assert.AreEqual(10, result);
}
public async Task Should_Invoke_Registered_Command_Handler_In_Container()
{
var commandHandler = new TestCommandHandler(_outputHelper);
var container = new Container();
container.Register <ICommandHandler <DoSomethingCommand> >(() => commandHandler, Lifestyle.Singleton);
var containerAdapter = new SimpleInjectorContainerAdapter(container);
var dispatcher = new CommandDispatcher(new ContainerCommandHandlerResolver(containerAdapter)); // Sync handler resolver
await dispatcher.DispatchAsync(new DoSomethingCommand());
Assert.Equal(1, commandHandler.HandledCommands.Count);
Assert.Contains(commandHandler.HandledCommands, c => c is DoSomethingCommand);
}
public async Task FactMethodName_IsSuccess_Should_CallProcessMethod()
{
var configuration = new StopwatchConfiguration(true, 50, 50, 50, 50);
var requestProcessor = Mock.Of <IRequestProcessor <TestCommand> >();
var requestInformation = new RequestInformation <TestCommand>
{
Elapsed = 500
};
IPipelineBehavior <TestCommand, Unit> stopwatchPipeline = new StopwatchBehavior <TestCommand, Unit>(
configuration, requestInformation, requestProcessor);
var testCommand = new TestCommand();
var testHandler = new TestCommandHandler();
var unit = await stopwatchPipeline.Handle(testCommand,
public async Task Given_TestCommand_When_SendAsync_Then_CommandHandlerIsFired()
{
//Arrange
var services = new ServiceCollection();
var command = new TestCommand();
var commandHandler = new TestCommandHandler();
services.AddScoped <ICommandHandler <TestCommand> >(provider => commandHandler);
var serviceProvider = services.BuildServiceProvider();
var commandBus = new CommandBus(serviceProvider.GetService);
//Act
await commandBus.SendAsync(command);
//Assert
Assert.That(commandHandler.IsFired, Is.True);
}
public void AuditDecorator_Succeeds()
{
var commandHandler = new TestCommandHandler();
var command = new TestCommand("Value");
var decorator = new AuditDecorator <TestCommand>(_repository, _serializer)
{
Handler = commandHandler
};
decorator.Execute(command);
_context.CommandExecutions.Should().HaveCount(1);
_context.CommandExecutions.First().Date.Should().BeCloseTo(DateTime.UtcNow, 1000);
_context.CommandExecutions.First().CommandType.Should().Be("AzurePlayground.CommandHandlers.Tests.Decorators.AuditDecoratorTests+TestCommand");
_context.CommandExecutions.First().CommandData.Should().Be(_serializer.SerializeToJson(command));
}
public TestCommand()
: base("test", "Test a database connection to see whether it is available.")
{
var timeoutOption = new Option <int>(
"--timeout",
getDefaultValue: () => 10,
description: "A timeout (in seconds) to wait for."
);
AddOption(timeoutOption);
Handler = CommandHandler.Create <FileInfo, IConsole, int, CancellationToken>((config, console, timeout, cancellationToken) =>
{
var handler = new TestCommandHandler(config);
return(handler.HandleCommandAsync(console, timeout, cancellationToken));
});
}
public void ShouldResolveAsyncCommandHandlerFromContainer()
{
var commandHandler = new TestCommandHandler(_outputHelper);
IMessageHandlerResolver resolver = CreateContainerCommandAsyncHandlerResolver(container =>
{
container.RegisterSingleton <ICommandAsyncHandler <TestCommand> >(commandHandler);
});
MessageHandlerDelegate commandHandlerDelegate = resolver.ResolveMessageHandler(typeof(TestCommand));
// Delegate should invoke the actual command handler - TestCommandHandler.
commandHandlerDelegate.Invoke(new TestCommand());
commandHandler.HandledCommands.Should().HaveCount(1);
commandHandler.HasHandledCommand <TestCommand>().Should().BeTrue();
}
public void Should_Register_All_Command_Handlers()
{
var commandHandler = new TestCommandHandler(_testOutputHelper);
var registration = new CommandHandlerRegistration();
registration.Register(() => (ICommandHandler <DoSomethingCommand>)commandHandler);
CommandHandlerDelegate commandHandlerDelegate = registration.ResolveCommandHandler <DoSomethingCommand>();
Assert.NotNull(commandHandlerDelegate);
// Delegate should invoke the actual command handler - TestCommandHandler.
commandHandlerDelegate.Invoke(new DoSomethingCommand());
Assert.Equal(1, commandHandler.HandledCommands.Count);
Assert.Contains(commandHandler.HandledCommands, c => c is DoSomethingCommand);
}
public void ShouldValidateSuccessfulSendCommand()
{
var handler = new TestCommandHandler(_messageRepository);
var testMessage = new TestCommand()
{
HelloMessage = "Olá Mundo!",
MessageId = Guid.NewGuid(),
PublisherName = nameof(InMemoryBusTests),
Timestamp = DateTime.Now,
};
_inMemomoryBus.Receive(handler);
_inMemomoryBus.Send(testMessage);
Assert.AreEqual(testMessage, _messageRepository.GetMessageById(testMessage.MessageId));
}
public async Task Should_Invoke_The_Actual_Registered_Command_Handler()
{
var commandHandler = new TestCommandHandler(_testOutputHelper);
var registration = new CommandHandlerRegistration();
registration.Register(() => (ICommandHandler <DoSomethingCommand>)commandHandler);
CommandHandlerDelegate commandHandlerDelegate = registration.ResolveCommandHandler <DoSomethingCommand>();
Assert.NotNull(commandHandlerDelegate);
// Invoke.
await commandHandlerDelegate.Invoke(new DoSomethingCommand());
// Check if actual command handler instance was invoked.
Assert.Equal(1, commandHandler.HandledCommands.Count);
Assert.Contains(commandHandler.HandledCommands, c => c is DoSomethingCommand);
}
public async Task HandlerInvokerTest()
{
//ARRANGE
var result = 0;
var command = new TestCommand(Guid.NewGuid(), Guid.NewGuid());
var handler = new TestCommandHandler(() => result = 10);
var handlerInvoker = new HandlerInvoker();
var serialised = JsonConvert.SerializeObject(command, command.GetType(), new JsonSerializerSettings {
TypeNameHandling = TypeNameHandling.Objects
});
var deserialised = JsonConvert.DeserializeObject(serialised, new JsonSerializerSettings {
TypeNameHandling = TypeNameHandling.Objects
});
//ACT
await handlerInvoker.InvokeHandlers(new[] { handler }, (object)deserialised);
//ASSERT
Assert.AreEqual(10, result);
}
public async Task Should_Invoke_Registered_Command_Handler_With_Composite_Resolver()
{
var commandHandler = new TestCommandHandler(_outputHelper);
var container = new Container();
container.Register <ICommandHandler <DoSomethingCommand> >(() => commandHandler, Lifestyle.Singleton);
container.Register <ICommandAsyncHandler <DoSomethingWithCancellationCommand> >(() => commandHandler, Lifestyle.Singleton);
var containerAdapter = new SimpleInjectorContainerAdapter(container);
var containerAsyncHandlerResolver = new ContainerCommandAsyncHandlerResolver(containerAdapter);
var containerHandlerResolver = new ContainerCommandHandlerResolver(containerAdapter);
Func <Exception, bool> exceptionHandler = (ex) =>
{
var exception = ex as NoCommandHandlerResolvedException;
if (exception != null)
{
_outputHelper.WriteLine($"Ignoring encountered exception while trying to resolve command handler for {exception.CommandType.Name}...");
// Notify as handled if no command handler is resolved from other resolvers.
return(true);
}
return(false);
};
var compositeResolver = new CompositeCommandHandlerResolver(new List <ICommandHandlerResolver>()
{
containerAsyncHandlerResolver,
containerHandlerResolver
}, exceptionHandler); // Pass in an exception handler.
var dispatcher = new CommandDispatcher(compositeResolver); // Composite resolver
await dispatcher.DispatchAsync(new DoSomethingCommand());
await dispatcher.DispatchAsync(new DoSomethingWithCancellationCommand());
Assert.Equal(2, commandHandler.HandledCommands.Count);
Assert.Contains(commandHandler.HandledCommands, c => c is DoSomethingCommand);
Assert.Contains(commandHandler.HandledCommands, c => c is DoSomethingWithCancellationCommand);
}
public void ShouldRegisterCommandAsyncHandler()
{
var commandHandler = new TestCommandHandler(_outputHelper);
var registration = new SingleMessageHandlerRegistration();
registration.RegisterCommandHandler(() => commandHandler.AsCommandAsyncHandler <TestCommand>());
IMessageHandlerResolver resolver = registration.BuildMessageHandlerResolver();
MessageHandlerDelegate commandHandlerDelegate = resolver.ResolveMessageHandler(typeof(TestCommand));
commandHandlerDelegate.Should().NotBeNull();
// Delegate should invoke the actual command handler - TestCommandHandler.
commandHandlerDelegate.Invoke(new TestCommand());
commandHandler.HandledCommands.Should().HaveCount(1);
commandHandler.HasHandledCommand <TestCommand>().Should().BeTrue();
}
protected override void BeforeScenario()
{
_commandHandler = new TestCommandHandler();
_childCommandHandler = new TestChildCommandHandler();
_commandBus = new CommandExecutor(new ICommandHandler[] { _commandHandler, _childCommandHandler });
}