public void CatchWithTaskTest()
        {
            //arrange
            Exception  realEception = null;
            IPandaTask nextTask     = new PandaTask();

            IPandaTask NextTaskCallback(Exception ex)
            {
                realEception = ex;
                return(nextTask);
            }

            Exception excpectException = new Exception();

            _task.Reject(excpectException);

            //act
            IPandaTask rejectTask = _task.Catch(NextTaskCallback);
            var        castedTask = rejectTask as ContinuationTaskFromPandaTask;

            var        callback = RuntimeReflection.GetValue <Func <IPandaTask>, ContinuationTaskFromPandaTask>(@"_nextActionDelegate", castedTask);
            IPandaTask realTask = callback();

            //assert
            Assert.NotNull(castedTask);
            Assert.True(castedTask.FromCatch);

            Assert.AreEqual(realTask, nextTask);
            Assert.AreEqual(excpectException, realEception);
        }
        public void ThenWithTaskTest()
        {
            //arrange
            Func <IPandaTask> expectedCallback = () => null;

            //act
            IPandaTask newtask      = _task.Then(expectedCallback);
            var        castedTask   = newtask as ContinuationTaskFromPandaTask;
            var        realCallback = RuntimeReflection.GetValue <Func <IPandaTask>, ContinuationTaskFromPandaTask>(@"_nextActionDelegate", castedTask);

            //assert
            Assert.NotNull(castedTask);
            Assert.False(castedTask.FromCatch);

            Assert.AreEqual(expectedCallback, realCallback);
        }