161 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// insert(size_type pos, string_view sv); // constexpr since C++2013 14#include <string>15#include <stdexcept>16#include <cassert>17 18#include "test_macros.h"19#include "min_allocator.h"20 21template <class S, class SV>22TEST_CONSTEXPR_CXX20 void test(S s, typename S::size_type pos, SV sv, S expected) {23 const typename S::size_type old_size = s.size();24 S s0 = s;25 if (pos <= old_size) {26 s.insert(pos, sv);27 LIBCPP_ASSERT(s.__invariants());28 assert(s == expected);29 }30#ifndef TEST_HAS_NO_EXCEPTIONS31 else if (!TEST_IS_CONSTANT_EVALUATED) {32 try {33 s.insert(pos, sv);34 assert(false);35 } catch (std::out_of_range&) {36 assert(pos > old_size);37 assert(s == s0);38 }39 }40#endif41}42 43template <class S>44TEST_CONSTEXPR_CXX20 void test_string() {45 typedef std::string_view SV;46 test(S(""), 0, SV(""), S(""));47 test(S(""), 0, SV("12345"), S("12345"));48 test(S(""), 0, SV("1234567890"), S("1234567890"));49 test(S(""), 0, SV("12345678901234567890"), S("12345678901234567890"));50 test(S(""), 1, SV(""), S("can't happen"));51 test(S(""), 1, SV("12345"), S("can't happen"));52 test(S(""), 1, SV("1234567890"), S("can't happen"));53 test(S(""), 1, SV("12345678901234567890"), S("can't happen"));54 test(S("abcde"), 0, SV(""), S("abcde"));55 test(S("abcde"), 0, SV("12345"), S("12345abcde"));56 test(S("abcde"), 0, SV("1234567890"), S("1234567890abcde"));57 test(S("abcde"), 0, SV("12345678901234567890"), S("12345678901234567890abcde"));58 test(S("abcde"), 1, SV(""), S("abcde"));59 test(S("abcde"), 1, SV("12345"), S("a12345bcde"));60 test(S("abcde"), 1, SV("1234567890"), S("a1234567890bcde"));61 test(S("abcde"), 1, SV("12345678901234567890"), S("a12345678901234567890bcde"));62 test(S("abcde"), 2, SV(""), S("abcde"));63 test(S("abcde"), 2, SV("12345"), S("ab12345cde"));64 test(S("abcde"), 2, SV("1234567890"), S("ab1234567890cde"));65 test(S("abcde"), 2, SV("12345678901234567890"), S("ab12345678901234567890cde"));66 test(S("abcde"), 4, SV(""), S("abcde"));67 test(S("abcde"), 4, SV("12345"), S("abcd12345e"));68 test(S("abcde"), 4, SV("1234567890"), S("abcd1234567890e"));69 test(S("abcde"), 4, SV("12345678901234567890"), S("abcd12345678901234567890e"));70 test(S("abcde"), 5, SV(""), S("abcde"));71 test(S("abcde"), 5, SV("12345"), S("abcde12345"));72 test(S("abcde"), 5, SV("1234567890"), S("abcde1234567890"));73 test(S("abcde"), 5, SV("12345678901234567890"), S("abcde12345678901234567890"));74 test(S("abcde"), 6, SV(""), S("can't happen"));75 test(S("abcde"), 6, SV("12345"), S("can't happen"));76 test(S("abcde"), 6, SV("1234567890"), S("can't happen"));77 test(S("abcde"), 6, SV("12345678901234567890"), S("can't happen"));78 test(S("abcdefghij"), 0, SV(""), S("abcdefghij"));79 test(S("abcdefghij"), 0, SV("12345"), S("12345abcdefghij"));80 test(S("abcdefghij"), 0, SV("1234567890"), S("1234567890abcdefghij"));81 test(S("abcdefghij"), 0, SV("12345678901234567890"), S("12345678901234567890abcdefghij"));82 test(S("abcdefghij"), 1, SV(""), S("abcdefghij"));83 test(S("abcdefghij"), 1, SV("12345"), S("a12345bcdefghij"));84 test(S("abcdefghij"), 1, SV("1234567890"), S("a1234567890bcdefghij"));85 test(S("abcdefghij"), 1, SV("12345678901234567890"), S("a12345678901234567890bcdefghij"));86 test(S("abcdefghij"), 5, SV(""), S("abcdefghij"));87 test(S("abcdefghij"), 5, SV("12345"), S("abcde12345fghij"));88 test(S("abcdefghij"), 5, SV("1234567890"), S("abcde1234567890fghij"));89 test(S("abcdefghij"), 5, SV("12345678901234567890"), S("abcde12345678901234567890fghij"));90 test(S("abcdefghij"), 9, SV(""), S("abcdefghij"));91 test(S("abcdefghij"), 9, SV("12345"), S("abcdefghi12345j"));92 test(S("abcdefghij"), 9, SV("1234567890"), S("abcdefghi1234567890j"));93 test(S("abcdefghij"), 9, SV("12345678901234567890"), S("abcdefghi12345678901234567890j"));94 test(S("abcdefghij"), 10, SV(""), S("abcdefghij"));95 test(S("abcdefghij"), 10, SV("12345"), S("abcdefghij12345"));96 test(S("abcdefghij"), 10, SV("1234567890"), S("abcdefghij1234567890"));97 test(S("abcdefghij"), 10, SV("12345678901234567890"), S("abcdefghij12345678901234567890"));98 test(S("abcdefghij"), 11, SV(""), S("can't happen"));99 test(S("abcdefghij"), 11, SV("12345"), S("can't happen"));100 test(S("abcdefghij"), 11, SV("1234567890"), S("can't happen"));101 test(S("abcdefghij"), 11, SV("12345678901234567890"), S("can't happen"));102 test(S("abcdefghijklmnopqrst"), 0, SV(""), S("abcdefghijklmnopqrst"));103 test(S("abcdefghijklmnopqrst"), 0, SV("12345"), S("12345abcdefghijklmnopqrst"));104 test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), S("1234567890abcdefghijklmnopqrst"));105 test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), S("12345678901234567890abcdefghijklmnopqrst"));106 test(S("abcdefghijklmnopqrst"), 1, SV(""), S("abcdefghijklmnopqrst"));107 test(S("abcdefghijklmnopqrst"), 1, SV("12345"), S("a12345bcdefghijklmnopqrst"));108 test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), S("a1234567890bcdefghijklmnopqrst"));109 test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), S("a12345678901234567890bcdefghijklmnopqrst"));110 test(S("abcdefghijklmnopqrst"), 10, SV(""), S("abcdefghijklmnopqrst"));111 test(S("abcdefghijklmnopqrst"), 10, SV("12345"), S("abcdefghij12345klmnopqrst"));112 test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), S("abcdefghij1234567890klmnopqrst"));113 test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), S("abcdefghij12345678901234567890klmnopqrst"));114 test(S("abcdefghijklmnopqrst"), 19, SV(""), S("abcdefghijklmnopqrst"));115 test(S("abcdefghijklmnopqrst"), 19, SV("12345"), S("abcdefghijklmnopqrs12345t"));116 test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), S("abcdefghijklmnopqrs1234567890t"));117 test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890t"));118 test(S("abcdefghijklmnopqrst"), 20, SV(""), S("abcdefghijklmnopqrst"));119 test(S("abcdefghijklmnopqrst"), 20, SV("12345"), S("abcdefghijklmnopqrst12345"));120 test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), S("abcdefghijklmnopqrst1234567890"));121 test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));122 test(S("abcdefghijklmnopqrst"), 21, SV(""), S("can't happen"));123 test(S("abcdefghijklmnopqrst"), 21, SV("12345"), S("can't happen"));124 test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), S("can't happen"));125 test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), S("can't happen"));126}127 128TEST_CONSTEXPR_CXX20 bool test() {129 test_string<std::string>();130#if TEST_STD_VER >= 11131 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();132#endif133 134 { // test inserting into self135 typedef std::string S;136 S s_short = "123/";137 S s_long = "Lorem ipsum dolor sit amet, consectetur/";138 139 s_short.insert(0, s_short.c_str());140 assert(s_short == "123/123/");141 s_short.insert(0, s_short.c_str());142 assert(s_short == "123/123/123/123/");143 s_short.insert(0, s_short.c_str());144 assert(s_short == "123/123/123/123/123/123/123/123/");145 146 s_long.insert(0, s_long.c_str());147 assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");148 }149 150 return true;151}152 153int main(int, char**) {154 test();155#if TEST_STD_VER > 17156 static_assert(test());157#endif158 159 return 0;160}161