68 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=(basic_string_view<charT, traits> sv); // 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, class SV>21TEST_CONSTEXPR_CXX20 void test(S s1, SV sv) {22 typedef typename S::traits_type T;23 s1 = sv;24 LIBCPP_ASSERT(s1.__invariants());25 assert(s1.size() == sv.size());26 assert(T::compare(s1.data(), sv.data(), s1.size()) == 0);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 typedef std::string_view SV;34 test(S(), SV(""));35 test(S("1"), SV(""));36 test(S(), SV("1"));37 test(S("1"), SV("2"));38 test(S("1"), SV("2"));39 40 test(S(), SV("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));41 test(S("123456789"), SV("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));42 test(S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"), SV("123456789"));43 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),44 SV("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));45 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"46 "1234567890123456789012345678901234567890123456789012345678901234567890"),47 SV("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));48}49 50TEST_CONSTEXPR_CXX20 bool test() {51 test_string<std::string>();52#if TEST_STD_VER >= 1153 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();54 test_string<std::basic_string<char, std::char_traits<char>, safe_allocator<char>>>();55#endif56 57 return true;58}59 60int main(int, char**) {61 test();62#if TEST_STD_VER > 1763 static_assert(test());64#endif65 66 return 0;67}68