87 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>&12// append(const basic_string<charT,traits>& str); // constexpr since C++2013 14#include <string>15#include <cassert>16 17#include "test_macros.h"18#include "min_allocator.h"19#include "asan_testing.h"20 21template <class S>22TEST_CONSTEXPR_CXX20 void test(S s, S str, S expected) {23 s.append(str);24 LIBCPP_ASSERT(s.__invariants());25 assert(s == expected);26 LIBCPP_ASSERT(is_string_asan_correct(s));27}28 29template <class S>30TEST_CONSTEXPR_CXX20 void test_string() {31 test(S(), S(), S());32 test(S(), S("12345"), S("12345"));33 test(S(), S("1234567890"), S("1234567890"));34 test(S(), S("12345678901234567890"), S("12345678901234567890"));35 36 test(S("12345"), S(), S("12345"));37 test(S("12345"), S("12345"), S("1234512345"));38 test(S("12345"), S("1234567890"), S("123451234567890"));39 test(S("12345"), S("12345678901234567890"), S("1234512345678901234567890"));40 41 test(S("1234567890"), S(), S("1234567890"));42 test(S("1234567890"), S("12345"), S("123456789012345"));43 test(S("1234567890"), S("1234567890"), S("12345678901234567890"));44 test(S("1234567890"), S("12345678901234567890"), S("123456789012345678901234567890"));45 46 test(S("12345678901234567890"), S(), S("12345678901234567890"));47 test(S("12345678901234567890"), S("12345"), S("1234567890123456789012345"));48 test(S("12345678901234567890"), S("1234567890"), S("123456789012345678901234567890"));49 test(S("12345678901234567890"), S("12345678901234567890"), S("1234567890123456789012345678901234567890"));50 51 // Starting from long string (no SSO)52 test(S("123456789012345678901234567890"), S(), S("123456789012345678901234567890"));53 test(S("123456789012345678901234567890"), S("12345"), S("12345678901234567890123456789012345"));54 test(S("123456789012345678901234567890"), S("1234567890"), S("1234567890123456789012345678901234567890"));55 test(S("123456789012345678901234567890"),56 S("12345678901234567890"),57 S("12345678901234567890123456789012345678901234567890"));58}59 60TEST_CONSTEXPR_CXX20 bool test() {61 test_string<std::string>();62#if TEST_STD_VER >= 1163 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();64 test_string<std::basic_string<char, std::char_traits<char>, safe_allocator<char>>>();65#endif66 67#if TEST_STD_VER >= 1168 { // LWG 294669 std::string s;70 s.append({"abc", 1});71 assert(s.size() == 1);72 assert(s == "a");73 }74#endif75 76 return true;77}78 79int main(int, char**) {80 test();81#if TEST_STD_VER > 1782 static_assert(test());83#endif84 85 return 0;86}87