diff options
Diffstat (limited to 'test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar.t/find.pass.cpp')
| -rw-r--r-- | test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar.t/find.pass.cpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar.t/find.pass.cpp b/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar.t/find.pass.cpp index ead3f32fcc72..80aca0ea7f9d 100644 --- a/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar.t/find.pass.cpp +++ b/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar.t/find.pass.cpp @@ -12,10 +12,24 @@ // template<> struct char_traits<wchar_t> // static const char_type* find(const char_type* s, size_t n, const char_type& a); +// constexpr in C++17 #include <string> #include <cassert> +#include "test_macros.h" + +#if TEST_STD_VER > 14 +constexpr bool test_constexpr() +{ + constexpr const wchar_t *p = L"123"; + return std::char_traits<wchar_t>::find(p, 3, L'1') == p + && std::char_traits<wchar_t>::find(p, 3, L'2') == p + 1 + && std::char_traits<wchar_t>::find(p, 3, L'3') == p + 2 + && std::char_traits<wchar_t>::find(p, 3, L'4') == nullptr; +} +#endif + int main() { wchar_t s1[] = {1, 2, 3}; @@ -25,4 +39,8 @@ int main() assert(std::char_traits<wchar_t>::find(s1, 3, wchar_t(4)) == 0); assert(std::char_traits<wchar_t>::find(s1, 3, wchar_t(0)) == 0); assert(std::char_traits<wchar_t>::find(NULL, 0, wchar_t(0)) == 0); + +#if TEST_STD_VER > 14 + static_assert(test_constexpr(), "" ); +#endif } |