48 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <string>10 11// size_type length() const; // constexpr since C++2012 13#include <string>14#include <cassert>15 16#include "test_macros.h"17#include "min_allocator.h"18 19template <class S>20TEST_CONSTEXPR_CXX20 void test(const S& s) {21 assert(s.length() == s.size());22}23 24template <class S>25TEST_CONSTEXPR_CXX20 void test_string() {26 test(S());27 test(S("123"));28 test(S("12345678901234567890123456789012345678901234567890"));29}30 31TEST_CONSTEXPR_CXX20 bool test() {32 test_string<std::string>();33#if TEST_STD_VER >= 1134 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();35#endif36 37 return true;38}39 40int main(int, char**) {41 test();42#if TEST_STD_VER > 1743 static_assert(test());44#endif45 46 return 0;47}48