public void RegisterHandler_Generic_Test()
{
object parameterObject = new object();
bool handlerExecuted = false;
var handler = new Action <object>(o => { handlerExecuted = o == parameterObject; });
testObj.RegisterHandler(handler);
var captor = new ArgumentCaptor <Action <object> >();
Verify(handlersByType).TryAdd(Eq(typeof(object)), captor.GetParameter());
VerifyNoMoreInteractions();
AssertFalse(handlerExecuted);
captor.Value(parameterObject);
AssertTrue(handlerExecuted);
}