100       assert(i.transform(LVal{}) == 1);  in test_val_types()
101       ASSERT_SAME_TYPE(decltype(i.transform(LVal{})), std::optional<int>);  in test_val_types()
108       assert(i.transform(l) == 1);  in test_val_types()
109       ASSERT_SAME_TYPE(decltype(i.transform(l)), std::optional<int>);  in test_val_types()
118       assert(i.transform(CLVal{}) == 1);  in test_val_types()
119       ASSERT_SAME_TYPE(decltype(i.transform(CLVal{})), std::optional<int>);  in test_val_types()
126       assert(i.transform(l) == 1);  in test_val_types()
127       ASSERT_SAME_TYPE(decltype(i.transform(l)), std::optional<int>);  in test_val_types()
136       assert(std::move(i).transform(RVal{}) == 1);  in test_val_types()
137       ASSERT_SAME_TYPE(decltype(std::move(i).transform(RVal{})), std::optional<int>);  in test_val_types()
143       assert(i.transform(RVRefQual{}) == 1);  in test_val_types()
144       ASSERT_SAME_TYPE(decltype(i.transform(RVRefQual{})), std::optional<int>);  in test_val_types()
153       assert(std::move(i).transform(CRVal{}) == 1);  in test_val_types()
154       ASSERT_SAME_TYPE(decltype(std::move(i).transform(CRVal{})), std::optional<int>);  in test_val_types()
161       assert(i.transform(std::move(l)) == 1);  in test_val_types()
162       ASSERT_SAME_TYPE(decltype(i.transform(std::move(l))), std::optional<int>);  in test_val_types()
175   opt.transform(l);  in test_sfinae()
176   std::move(opt).transform(l);  in test_sfinae()
190   opt.transform(never_called);  in test()
191   std::move(opt).transform(never_called);  in test()
192   copt.transform(never_called);  in test()
193   std::move(copt).transform(never_called);  in test()
197   std::move(nc).transform(NoCopy{});  in test()
198   std::move(cnc).transform(NoCopy{});  in test()
200   std::move(nc).transform(NoMove{});  in test()
201   std::move(cnc).transform(NoMove{});  in test()