public void TC_Transitions()
        {
            var problem = new Planner.SAS.Problem(new SASInputData(GetFilePath("TC_Gripper.sas")));

            ISuccessor successor = problem.GetSuccessors(problem.InitialState).First();

            Assert.IsFalse(successor.IsComplexTransition());
            Assert.IsTrue(successor.GetSuccessorState().Equals(successor.GetTransitionResult()));
            var successorResults = successor.GetComplexTransitionResults().ToList();

            Assert.AreEqual(1, successorResults.Count);
            Assert.IsTrue(successorResults.First().Equals(successor.GetTransitionResult()));

            IPredecessor predecessor = problem.GetPredecessors(problem.GoalConditions).First();

            Assert.IsFalse(predecessor.IsComplexTransition());
            Assert.IsTrue(predecessor.GetPredecessorConditions().Equals(predecessor.GetTransitionResult()));
            var predecessorResults = predecessor.GetComplexTransitionResults().ToList();

            Assert.AreEqual(1, predecessorResults.Count);
            Assert.IsTrue(predecessorResults.First().Equals(predecessor.GetTransitionResult()));

            IPredecessor predecessor2 = problem.GetPredecessors(problem.GoalConditions.GetCorrespondingRelativeStates(problem).First()).First();

            Assert.IsTrue(predecessor2.IsComplexTransition());
            Assert.IsTrue(CollectionsEquality.Equals(predecessor2.GetPredecessorRelativeStates(), predecessor2.GetComplexTransitionResults()));
            var predecessorResults2 = predecessor2.GetComplexTransitionResults().ToList();

            Assert.AreEqual(1, predecessorResults2.Count);
            Assert.IsTrue(predecessorResults2.First().Equals(predecessor2.GetTransitionResult()));
        }