public async Task PublishTest()
{
var serviceProvider = BuildServiceProvider();
var messageDispatcher = new MessageDispatcher(serviceProvider);
// Register a handler for the message type
var handler = new TestMessageHandler();
messageDispatcher.Register(ContextualProvider.Create(handler));
var handler2 = new TestMessageHandler();
messageDispatcher.Register(ContextualProvider.Create(handler2));
var baseHandler = new TestMessageBaseHandler();
messageDispatcher.Register(ContextualProvider.Create(baseHandler));
var message = new TestMessage("x", 123);
var dispatchResult = await messageDispatcher.DispatchAsync(message, new DispatchValueDictionary(), publish : true, cancellation : default);
Assert.IsTrue(dispatchResult.IsSuccess);
Assert.AreEqual(message, handler.Message);
Assert.AreEqual(message, handler2.Message);
Assert.AreEqual(message, baseHandler.Message);
}
public async Task BaseTest()
{
var serviceProvider = BuildServiceProvider();
var messageDispatcher = new MessageDispatcher(serviceProvider);
// Register a handler for the message type
var handler = new TestMessageHandler();
var handlerProvider = ContextualProvider.Create(handler);
messageDispatcher.Register(handlerProvider);
var handler2 = new TestMessageHandler();
messageDispatcher.Register(ContextualProvider.Create(handler2));
var baseHandler = new TestMessageBaseHandler();
messageDispatcher.Register(ContextualProvider.Create(baseHandler));
// If the handler (provider) is registered again, the order of handlers shall stay the same.
messageDispatcher.Register(handlerProvider);
var message = new TestMessage("x", 123);
var dispatchResult = await messageDispatcher.DispatchAsync(message, new DispatchValueDictionary(), publish : false, cancellation : default);
Assert.IsTrue(dispatchResult.IsSuccess);
Assert.IsNull(handler.Message); // Handler shall not be called
Assert.AreEqual(message, handler2.Message); // Handler2 shall be called
Assert.IsNull(baseHandler.Message); // BaseHandler shall not be called
}
private static void AddMessageProcessors(IServiceCollection services)
{
services.Configure <MessagingOptions>(options =>
{
options.MessageProcessors.Add(ContextualProvider.Create <EntityMessageHandlerProcessor>());
});
}
public async Task DeregisterTest()
{
var serviceProvider = BuildServiceProvider();
var messageDispatcher = new MessageDispatcher(serviceProvider);
// Register a handler for the message type and deregister it to create a typed dispatcher
var handler = new TestMessageHandler();
var registration = messageDispatcher.Register(ContextualProvider.Create(handler));
var baseHandler = new TestMessageBaseHandler();
messageDispatcher.Register(ContextualProvider.Create(baseHandler));
registration.Dispose();
await registration.Disposal;
var message = new TestMessage("x", 123);
var dispatchResult = await messageDispatcher.DispatchAsync(message, new DispatchValueDictionary(), publish : false, cancellation : default);
Assert.IsTrue(dispatchResult.IsSuccess);
Assert.IsNull(handler.Message);
Assert.AreEqual(message, baseHandler.Message);
}