643 void CheckRelation(const Optional<T> &Lhs, const Optional<T> &Rhs,  in CheckRelation()  function
670   CheckRelation<EqualTo>(NoneEq, NoneEq, true);  in TEST()
671   CheckRelation<EqualTo>(NoneEq, EqualityRhs, false);  in TEST()
672   CheckRelation<EqualTo>(EqualityLhs, NoneEq, false);  in TEST()
675   CheckRelation<EqualTo>(EqualityLhs, EqualityRhs, IsEqual);  in TEST()
677   CheckRelation<EqualTo>(EqualityLhs, EqualityRhs, IsEqual);  in TEST()
681   CheckRelation<NotEqualTo>(NoneEq, NoneEq, false);  in TEST()
682   CheckRelation<NotEqualTo>(NoneEq, EqualityRhs, true);  in TEST()
683   CheckRelation<NotEqualTo>(EqualityLhs, NoneEq, true);  in TEST()
686   CheckRelation<NotEqualTo>(EqualityLhs, EqualityRhs, !IsEqual);  in TEST()
688   CheckRelation<NotEqualTo>(EqualityLhs, EqualityRhs, !IsEqual);  in TEST()
703   CheckRelation<Less>(NoneIneq, NoneIneq, false);  in TEST()
704   CheckRelation<Less>(NoneIneq, InequalityRhs, true);  in TEST()
705   CheckRelation<Less>(InequalityLhs, NoneIneq, false);  in TEST()
708   CheckRelation<Less>(InequalityLhs, InequalityRhs, IsLess);  in TEST()
710   CheckRelation<Less>(InequalityLhs, InequalityRhs, IsLess);  in TEST()
714   CheckRelation<Greater>(NoneIneq, NoneIneq, false);  in TEST()
715   CheckRelation<Greater>(NoneIneq, InequalityRhs, false);  in TEST()
716   CheckRelation<Greater>(InequalityLhs, NoneIneq, true);  in TEST()
719   CheckRelation<Greater>(InequalityRhs, InequalityLhs, IsLess);  in TEST()
721   CheckRelation<Greater>(InequalityRhs, InequalityLhs, IsLess);  in TEST()
725   CheckRelation<LessEqual>(NoneIneq, NoneIneq, true);  in TEST()
726   CheckRelation<LessEqual>(NoneIneq, InequalityRhs, true);  in TEST()
727   CheckRelation<LessEqual>(InequalityLhs, NoneIneq, false);  in TEST()
730   CheckRelation<LessEqual>(InequalityRhs, InequalityLhs, !IsLess);  in TEST()
732   CheckRelation<LessEqual>(InequalityRhs, InequalityLhs, !IsLess);  in TEST()
736   CheckRelation<GreaterEqual>(NoneIneq, NoneIneq, true);  in TEST()
737   CheckRelation<GreaterEqual>(NoneIneq, InequalityRhs, false);  in TEST()
738   CheckRelation<GreaterEqual>(InequalityLhs, NoneIneq, true);  in TEST()
741   CheckRelation<GreaterEqual>(InequalityLhs, InequalityRhs, !IsLess);  in TEST()
743   CheckRelation<GreaterEqual>(InequalityLhs, InequalityRhs, !IsLess);  in TEST()