public async Task when_processing_the_command_with_result()
{
FakeCommandTypeCollection = new Mock <ICommandTypeCollection>();
FakeServiceProvider = new Mock <IServiceProvider>();
Subject = new CommandProcessor(FakeCommandTypeCollection.Object, FakeServiceProvider.Object);
async Task should_invoke_the_correct_command_handler_and_return_a_result()
{
FakeResultCommand expectedCommand = null;
var expectedResult = new FakeResult();
var fakeCommandHandler = new FakeResultCommandHandler(x => { expectedCommand = x; return(expectedResult); });
FakeServiceProvider.Setup(x => x.GetService(typeof(IEnumerable <ICommandHandler <FakeResultCommand, FakeResult> >))).Returns(new[] { fakeCommandHandler });
var command = new FakeResultCommand();
var result = await Subject.ProcessWithResultAsync(command);
command.Should().Be(expectedCommand);
result.Should().Be(expectedResult);
}
void should_throw_exception_if_the_command_handler_is_not_found()
{
var command = new Mock <ICommand <object> >().Object;
Subject.Awaiting(x => x.ProcessWithResultAsync(command)).Should()
.Throw <CommandProcessorException>()
.WithMessage($"The command handler for '{command}' could not be found");
}
void should_throw_exception_if_multiple_command_handlers_are_found()
{
var handlerType = typeof(ICommandHandler <FakeMultiResultCommand1, FakeResult>);
var enumerableType = typeof(IEnumerable <ICommandHandler <FakeMultiResultCommand1, FakeResult> >);
FakeServiceProvider.Setup(x => x.GetService(enumerableType)).Returns(new[] { new Mock <ICommandHandler <FakeMultiResultCommand1, FakeResult> >().Object, new Mock <ICommandHandler <FakeMultiResultCommand1, FakeResult> >().Object });
var command = new FakeMultiResultCommand1();
Subject.Awaiting(x => x.ProcessWithResultAsync(command)).Should()
.Throw <CommandProcessorException>()
.WithMessage($"Multiple command handlers for '{handlerType}' was found");
}
}
public Task <FakeResult> HandleAsync(FakeMultiResultCommand1 command)
{
throw new NotImplementedException();
}
