57 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// basic_string<charT,traits,Allocator>& operator=(charT c); // constexpr since C++2012 13#include <string>14#include <cassert>15 16#include "test_macros.h"17#include "min_allocator.h"18#include "asan_testing.h"19 20template <class S>21TEST_CONSTEXPR_CXX20 void test(S s1, typename S::value_type s2) {22 typedef typename S::traits_type T;23 s1 = s2;24 LIBCPP_ASSERT(s1.__invariants());25 assert(s1.size() == 1);26 assert(T::eq(s1[0], s2));27 assert(s1.capacity() >= s1.size());28 LIBCPP_ASSERT(is_string_asan_correct(s1));29}30 31template <class S>32TEST_CONSTEXPR_CXX20 void test_string() {33 test(S(), 'a');34 test(S("1"), 'a');35 test(S("123456789"), 'a');36 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), 'a');37}38 39TEST_CONSTEXPR_CXX20 bool test() {40 test_string<std::string>();41#if TEST_STD_VER >= 1142 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();43 test_string<std::basic_string<char, std::char_traits<char>, safe_allocator<char>>>();44#endif45 46 return true;47}48 49int main(int, char**) {50 test();51#if TEST_STD_VER > 1752 static_assert(test());53#endif54 55 return 0;56}57