79 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// template<class charT, class traits, class Allocator>12// void swap(basic_string<charT,traits,Allocator>& lhs,13// basic_string<charT,traits,Allocator>& rhs); // constexpr since C++2014 15#include <string>16#include <stdexcept>17#include <algorithm>18#include <cassert>19 20#include "test_macros.h"21#include "min_allocator.h"22#include "asan_testing.h"23 24template <class S>25TEST_CONSTEXPR_CXX20 void test(S s1, S s2) {26 S s1_ = s1;27 S s2_ = s2;28 swap(s1, s2);29 LIBCPP_ASSERT(s1.__invariants());30 LIBCPP_ASSERT(s2.__invariants());31 assert(s1 == s2_);32 assert(s2 == s1_);33 LIBCPP_ASSERT(is_string_asan_correct(s1));34 LIBCPP_ASSERT(is_string_asan_correct(s2));35}36 37template <class S>38TEST_CONSTEXPR_CXX20 void test_string() {39 test(S(""), S(""));40 test(S(""), S("12345"));41 test(S(""), S("1234567890"));42 test(S(""), S("12345678901234567890"));43 test(S("abcde"), S(""));44 test(S("abcde"), S("12345"));45 test(S("abcde"), S("1234567890"));46 test(S("abcde"), S("12345678901234567890"));47 test(S("abcdefghij"), S(""));48 test(S("abcdefghij"), S("12345"));49 test(S("abcdefghij"), S("1234567890"));50 test(S("abcdefghij"), S("12345678901234567890"));51 test(S("abcdefghijklmnopqrst"), S(""));52 test(S("abcdefghijklmnopqrst"), S("12345"));53 test(S("abcdefghijklmnopqrst"), S("1234567890"));54 test(S("abcdefghijklmnopqrst"), S("12345678901234567890"));55 test(S("abcdefghijklmnopqrst123456LONG1234567890"), S(""));56 test(S("abcdefghijklmnopqrst123456LONG1234567890"), S("12345"));57 test(S("abcdefghijklmnopqrst123456LONG1234567890"), S("1234567890"));58 test(S("abcdefghijklmnopqrst123456LONG1234567890"), S("12345678901234567890"));59}60 61TEST_CONSTEXPR_CXX20 bool test() {62 test_string<std::string>();63#if TEST_STD_VER >= 1164 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char> > >();65 test_string<std::basic_string<char, std::char_traits<char>, safe_allocator<char> > >();66#endif67 68 return true;69}70 71int main(int, char**) {72 test();73#if TEST_STD_VER > 1774 static_assert(test());75#endif76 77 return 0;78}79