public void ShouldBeEqualIfMessageTypeIsTheSame()
{
MessageHandlerDelegate handler1 = NullMessageHandlerDelegate.Instance;
MessageHandlerDelegate handler2 = NullMessageHandlerDelegate.Instance;
handler1.Should().BeSameAs(handler2);
}
public void ShouldNotBeEqualToANewEmptyInstance()
{
MessageHandlerDelegate handler1 = NullMessageHandlerDelegate.Instance;
MessageHandlerDelegate handler2 = (m, ct) => Task.CompletedTask;
MessageHandlerDelegate handler3 = (m, ct) => Task.CompletedTask;
handler1.Should().NotBeSameAs(handler2);
handler2.Should().NotBeSameAs(handler3);
}
public void ShouldResolveTheRegisteredMessageHandler()
{
// Given
IMessageHandlerResolver resolver = CreateSingleMessageHandlerResolver(registration =>
{
registration.Register <TestMessage>((message, ct) => Task.CompletedTask);
});
// When
MessageHandlerDelegate handler = resolver.ResolveMessageHandler(typeof(TestMessage));
// Then
handler.Should().NotBe(NullMessageHandlerDelegate.Instance, "registered message handler delegate should be resolved.");
}
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();
}
public async Task ShouldRegisterAllMethodsOfTypeThatIsMarkedWithCommandHandlerAttribute()
{
var commandHandler = new TestAttributedCommandHandler(_outputHelper);
var registration = new SingleMessageHandlerRegistration();
registration.RegisterCommandHandlersByAttribute(() => commandHandler);
IMessageHandlerResolver resolver = registration.BuildMessageHandlerResolver();
MessageHandlerDelegate commandHandlerDelegate = resolver.ResolveMessageHandler(typeof(TestCommand));
commandHandlerDelegate.Should().NotBeNull();
// Delegate should invoke the actual command handler - TestAttributedCommandHandler.
await commandHandlerDelegate.Invoke(new TestCommand());
commandHandler.HandledCommands.Should().HaveCount(1);
commandHandler.HasHandledCommand <TestCommand>().Should().BeTrue();
}
public async Task ShouldRegisterAllCommandHandlerAttributeMethods()
{
var commandHandler = new TestAttributedCommandHandler(_outputHelper);
// Get methods marked with [CommandHandler] attribute.
IEnumerable <CommandHandlerAttributeMethod> methods = CommandHandlerAttributeMethod.FromType(() => commandHandler);
var registration = new SingleMessageHandlerRegistration();
registration.RegisterCommandHandlersByAttribute(methods);
IMessageHandlerResolver resolver = registration.BuildMessageHandlerResolver();
MessageHandlerDelegate commandHandlerDelegate = resolver.ResolveMessageHandler(typeof(TestCommand));
commandHandlerDelegate.Should().NotBeNull();
// Delegate should invoke the actual command handler - TestAttributedCommandHandler.
await commandHandlerDelegate.Invoke(new TestCommand());
commandHandler.HandledCommands.Should().HaveCount(1);
commandHandler.HasHandledCommand <TestCommand>().Should().BeTrue();
}
