public void RegisterSameVerbDifferentCase()
{
MessageBus bus = new MessageBus();
List <string> output = new List <string>();
Action <OutputMessage> subscriber = m => output.Add(m.Text);
bus.Subscribe(subscriber);
TestRoom room = new TestRoom(bus);
room.Enter();
Action act = () => room.TestRegisterHello("HeLLO");
act.Should().Throw <InvalidOperationException>().WithMessage("The verb 'HeLLO' is already registered.");
}