void ReturnsImmediately()
{
var delayedHandler = new TestAsyncEventHandlerWithDelay1();
var services = new ServiceCollection();
services.AddOptions();
services.AddEventing(opt => opt.RegisterAsyncEventHandler <TestEvent>(delayedHandler));
Assert.Null(delayedHandler.Message);
var serviceProvider = services.BuildServiceProvider();
var publisher = serviceProvider.GetService <IEventPublisher>();
var testEvent = new TestEvent()
{
Message = $"Hello from {this.GetType().Name} (Thread {Thread.CurrentThread.ManagedThreadId})"
};
publisher.PublishAsync(testEvent);
Assert.Null(delayedHandler.Message); // task should not be finished yet
Thread.Sleep(6000);
Assert.Contains(testEvent.Message, delayedHandler.Message); // should be finished now
}
async Task ResultIsAwaited()
{
var delayedHandler = new TestAsyncEventHandlerWithDelay1();
var services = new ServiceCollection();
services.AddOptions();
services.AddEventing(opt => opt.RegisterAsyncEventHandler <TestEvent>(delayedHandler));
Assert.Null(delayedHandler.Message);
var serviceProvider = services.BuildServiceProvider();
var publisher = serviceProvider.GetService <IEventPublisher>();
var testEvent = new TestEvent()
{
Message = $"Hello from {this.GetType().Name} (Thread {Thread.CurrentThread.ManagedThreadId})"
};
await publisher.PublishAsync(testEvent);
Assert.Contains(testEvent.Message, delayedHandler.Message);
}
void HandlersAreCalledWhileWaiting()
{
var handler1 = new TestAsyncEventHandler1();
var handler2 = new TestAsyncEventHandler2();
var handler3 = new TestAsyncEventHandlerWithDelay1();
var services = new ServiceCollection();
services.AddOptions();
services.AddEventing(opt => {
opt.RegisterAsyncEventHandler <TestEvent>(handler1);
opt.RegisterAsyncEventHandler <TestEvent>(handler2);
opt.RegisterAsyncEventHandler <TestEvent>(handler3);
});
Assert.Null(handler1.Message);
Assert.Null(handler2.Message);
Assert.Null(handler3.Message);
var serviceProvider = services.BuildServiceProvider();
var publisher = serviceProvider.GetService <IEventPublisher>();
var testEvent = new TestEvent()
{
Message = $"Hello from {this.GetType().Name} (Thread {Thread.CurrentThread.ManagedThreadId})"
};
publisher.PublishAsync(testEvent);
// Wait for the tasks to finish
Thread.Sleep(6000);
Assert.Contains(testEvent.Message, handler1.Message);
Assert.Contains(testEvent.Message, handler2.Message);
Assert.Contains(testEvent.Message, handler3.Message);
}
