108 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// iterator erase(const_iterator first, const_iterator last); // 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 s, typename S::difference_type pos, typename S::difference_type n, S expected) {22 typename S::const_iterator first = s.cbegin() + pos;23 typename S::const_iterator last = s.cbegin() + pos + n;24 typename S::iterator i = s.erase(first, last);25 LIBCPP_ASSERT(s.__invariants());26 assert(s[s.size()] == typename S::value_type());27 assert(s == expected);28 assert(i - s.begin() == pos);29 LIBCPP_ASSERT(is_string_asan_correct(s));30}31 32template <class S>33TEST_CONSTEXPR_CXX20 void test_string() {34 test(S(""), 0, 0, S(""));35 test(S("abcde"), 0, 0, S("abcde"));36 test(S("abcde"), 0, 1, S("bcde"));37 test(S("abcde"), 0, 2, S("cde"));38 test(S("abcde"), 0, 4, S("e"));39 test(S("abcde"), 0, 5, S(""));40 test(S("abcde"), 1, 0, S("abcde"));41 test(S("abcde"), 1, 1, S("acde"));42 test(S("abcde"), 1, 2, S("ade"));43 test(S("abcde"), 1, 3, S("ae"));44 test(S("abcde"), 1, 4, S("a"));45 test(S("abcde"), 2, 0, S("abcde"));46 test(S("abcde"), 2, 1, S("abde"));47 test(S("abcde"), 2, 2, S("abe"));48 test(S("abcde"), 2, 3, S("ab"));49 test(S("abcde"), 4, 0, S("abcde"));50 test(S("abcde"), 4, 1, S("abcd"));51 test(S("abcde"), 5, 0, S("abcde"));52 test(S("abcdefghij"), 0, 0, S("abcdefghij"));53 test(S("abcdefghij"), 0, 1, S("bcdefghij"));54 test(S("abcdefghij"), 0, 5, S("fghij"));55 test(S("abcdefghij"), 0, 9, S("j"));56 test(S("abcdefghij"), 0, 10, S(""));57 test(S("abcdefghij"), 1, 0, S("abcdefghij"));58 test(S("abcdefghij"), 1, 1, S("acdefghij"));59 test(S("abcdefghij"), 1, 4, S("afghij"));60 test(S("abcdefghij"), 1, 8, S("aj"));61 test(S("abcdefghij"), 1, 9, S("a"));62 test(S("abcdefghij"), 5, 0, S("abcdefghij"));63 test(S("abcdefghij"), 5, 1, S("abcdeghij"));64 test(S("abcdefghij"), 5, 2, S("abcdehij"));65 test(S("abcdefghij"), 5, 4, S("abcdej"));66 test(S("abcdefghij"), 5, 5, S("abcde"));67 test(S("abcdefghij"), 9, 0, S("abcdefghij"));68 test(S("abcdefghij"), 9, 1, S("abcdefghi"));69 test(S("abcdefghij"), 10, 0, S("abcdefghij"));70 test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"));71 test(S("abcdefghijklmnopqrst"), 0, 1, S("bcdefghijklmnopqrst"));72 test(S("abcdefghijklmnopqrst"), 0, 10, S("klmnopqrst"));73 test(S("abcdefghijklmnopqrst"), 0, 19, S("t"));74 test(S("abcdefghijklmnopqrst"), 0, 20, S(""));75 test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"));76 test(S("abcdefghijklmnopqrst"), 1, 1, S("acdefghijklmnopqrst"));77 test(S("abcdefghijklmnopqrst"), 1, 9, S("aklmnopqrst"));78 test(S("abcdefghijklmnopqrst"), 1, 18, S("at"));79 test(S("abcdefghijklmnopqrst"), 1, 19, S("a"));80 test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"));81 test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijlmnopqrst"));82 test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijpqrst"));83 test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijt"));84 test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"));85 test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"));86 test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrs"));87 test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"));88}89 90TEST_CONSTEXPR_CXX20 bool test() {91 test_string<std::string>();92#if TEST_STD_VER >= 1193 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();94 test_string<std::basic_string<char, std::char_traits<char>, safe_allocator<char>>>();95#endif96 97 return true;98}99 100int main(int, char**) {101 test();102#if TEST_STD_VER > 17103 static_assert(test());104#endif105 106 return 0;107}108