public void unsubscribed_messages_noone_should_handle_it() { var handler1 = new TestHandler(); var handler2 = new TestHandler2(); var handler3 = new TestHandler3(); Bus.Publish(new TestMessage()); Bus.Publish(new TestMessage2()); Bus.Publish(new TestMessage3()); Assert.That(handler1.DidntHandleAnyMessages() && handler2.DidntHandleAnyMessages() && handler3.DidntHandleAnyMessages()); }