public async Task Then_The_Handler_Only_Receives_The_Message_Once()
{
// Arrange
var messageLock = new MessageLockStore();
var handler = new ExactlyOnceHandlerNoTimeout();
var services = GivenJustSaying()
.ConfigureJustSaying((builder) => builder.WithLoopbackTopic <SimpleMessage>(UniqueName))
.ConfigureJustSaying((builder) => builder.Services((config) => config.WithMessageLock(() => messageLock)))
.AddJustSayingHandlers(new[] { handler });
await WhenAsync(
services,
async (publisher, listener, serviceProvider, cancellationToken) =>
{
await listener.StartAsync(cancellationToken);
await publisher.StartAsync(cancellationToken);
var message = new SimpleMessage();
// Act
await publisher.PublishAsync(message, cancellationToken);
await publisher.PublishAsync(message, cancellationToken);
await Task.Delay(1.Seconds(), cancellationToken);
// Assert
handler.NumberOfTimesIHaveBeenCalledForMessage(message.UniqueKey()).ShouldBe(1);
});
}
public async Task Then_Both_Handlers_Receive_The_Message()
{
// Arrange
var handler1 = new ExactlyOnceHandlerNoTimeout();
var handler2 = new ExactlyOnceHandlerNoTimeout();
var services = GivenJustSaying()
.ConfigureJustSaying((builder) => builder.WithLoopbackTopic <SimpleMessage>(UniqueName))
.AddJustSayingHandlers(new[] { handler1, handler2 });
await WhenAsync(
services,
async (publisher, listener, serviceProvider, cancellationToken) =>
{
listener.Start(cancellationToken);
var message = new SimpleMessage();
// Act
await publisher.PublishAsync(message, cancellationToken);
await Task.Delay(5.Seconds());
// Assert
handler1.NumberOfTimesIHaveBeenCalledForMessage(message.UniqueKey()).ShouldBe(1);
handler2.NumberOfTimesIHaveBeenCalledForMessage(message.UniqueKey()).ShouldBe(1);
});
}