30     static_assert(sizeof(Optional<bool>) == 2, "bad Optional<bool> size");  in TEST()
31     static_assert(std::alignment_of<Optional<bool>>::value ==  in TEST()
35     static_assert(sizeof(Optional<char>) == 2, "bad Optional<char> size");  in TEST()
36     static_assert(std::alignment_of<Optional<char>>::value ==  in TEST()
40     static_assert(sizeof(Optional<int16_t>) == 4, "bad Optional<int16_t> size");  in TEST()
41     static_assert(std::alignment_of<Optional<int16_t>>::value ==  in TEST()
45     static_assert(sizeof(Optional<int32_t>) == 8, "bad Optional<int32_t> size");  in TEST()
46     static_assert(std::alignment_of<Optional<int32_t>>::value ==  in TEST()
50     static_assert(sizeof(Optional<int64_t>) == 16,  in TEST()
52     static_assert(std::alignment_of<Optional<int64_t>>::value ==  in TEST()
60     static_assert(sizeof(Optional<S128>) == 3*sizeof(int64_t),  in TEST()
62     static_assert(std::alignment_of<Optional<S128>>::value ==  in TEST()
205         static_assert(std::is_same<decltype(o), Optional<int>>::value,  in TEST()
212         static_assert(std::is_same<decltype(o), Optional<std::vector<char>>>::value,  in TEST()
220         static_assert(std::is_same<decltype(o), Optional<const char*>>::value,  in TEST()
227         static_assert(std::is_same<decltype(o), Optional<std::string>>::value,  in TEST()
234         static_assert(std::is_same<decltype(o), Optional<std::string>>::value,  in TEST()
241         static_assert(std::is_same<decltype(o), Optional<std::string>>::value,  in TEST()