public void Publish_SingleHandler_ReceivesTheMessage(string message)
{
// Arrange
IMessageBus <string> bus = new MessageBus <string>();
var handler = new HandlerSpy <string>();
bus.Subscribe <string>(handler.Delegate);
// Act
bus.Publish(message);
// Assert
Assert.Equal(message, handler.Messages[0]);
}
public void Publish_SingleHandlerMultipleTimes_GetsCalledOnce()
{
// Arrange
IMessageBus <string> bus = new MessageBus <string>();
var handler = new HandlerSpy <string>();
// Act
bus.Subscribe <string>(handler.Delegate);
bus.Subscribe <string>(handler.Delegate);
bus.Subscribe <string>(handler.Delegate);
bus.Publish(string.Empty);
// Assert
Assert.Equal(1, handler.Messages.Count);
}
public void Publish_MultipleHandlers_AllReceiveTheMessage(string message)
{
// Arrange
var bus = MessageBus <string> .Empty;
var handler0 = new HandlerSpy <string>();
var handler1 = new HandlerSpy <string>();
bus.Subscribe <string>(handler0.Delegate);
bus.Subscribe <string>(handler1.Delegate);
// Act
bus.Publish(message);
// Assert
Assert.Equal(message, handler0.Messages[0]);
Assert.Equal(message, handler1.Messages[0]);
}