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-exception
6//
7//===----------------------------------------------------------------------===//
8
9// <string>
10
11// basic_string<charT,traits,Allocator>&
12// insert(size_type pos1, const basic_string& str); // constexpr since C++20
13
14#include <string>
15#include <stdexcept>
16#include <cassert>
17
18#include "test_macros.h"
19#include "min_allocator.h"
20#include "asan_testing.h"
21
22template <class S>
23TEST_CONSTEXPR_CXX20 void test(S s, typename S::size_type pos, S str, S expected) {
24 const typename S::size_type old_size = s.size();
25 S s0 = s;
26 if (pos <= old_size) {
27 s.insert(pos, str);
28 LIBCPP_ASSERT(s.__invariants());
29 assert(s == expected);
30 LIBCPP_ASSERT(is_string_asan_correct(s));
31 }
32#ifndef TEST_HAS_NO_EXCEPTIONS
33 else if (!TEST_IS_CONSTANT_EVALUATED) {
34 try {
35 s.insert(pos, str);
36 assert(false);
37 } catch (std::out_of_range&) {
38 assert(pos > old_size);
39 assert(s == s0);
40 }
41 }
42#endif
43}
44
45template <class S>
46TEST_CONSTEXPR_CXX20 void test_string() {
47 test(S(""), 0, S(""), S(""));
48 test(S(""), 0, S("12345"), S("12345"));
49 test(S(""), 0, S("1234567890"), S("1234567890"));
50 test(S(""), 0, S("12345678901234567890"), S("12345678901234567890"));
51 test(S(""), 1, S(""), S("can't happen"));
52 test(S(""), 1, S("12345"), S("can't happen"));
53 test(S(""), 1, S("1234567890"), S("can't happen"));
54 test(S(""), 1, S("12345678901234567890"), S("can't happen"));
55 test(S("abcde"), 0, S(""), S("abcde"));
56 test(S("abcde"), 0, S("12345"), S("12345abcde"));
57 test(S("abcde"), 0, S("1234567890"), S("1234567890abcde"));
58 test(S("abcde"), 0, S("12345678901234567890"), S("12345678901234567890abcde"));
59 test(S("abcde"), 1, S(""), S("abcde"));
60 test(S("abcde"), 1, S("12345"), S("a12345bcde"));
61 test(S("abcde"), 1, S("1234567890"), S("a1234567890bcde"));
62 test(S("abcde"), 1, S("12345678901234567890"), S("a12345678901234567890bcde"));
63 test(S("abcde"), 2, S(""), S("abcde"));
64 test(S("abcde"), 2, S("12345"), S("ab12345cde"));
65 test(S("abcde"), 2, S("1234567890"), S("ab1234567890cde"));
66 test(S("abcde"), 2, S("12345678901234567890"), S("ab12345678901234567890cde"));
67 test(S("abcde"), 4, S(""), S("abcde"));
68 test(S("abcde"), 4, S("12345"), S("abcd12345e"));
69 test(S("abcde"), 4, S("1234567890"), S("abcd1234567890e"));
70 test(S("abcde"), 4, S("12345678901234567890"), S("abcd12345678901234567890e"));
71 test(S("abcde"), 5, S(""), S("abcde"));
72 test(S("abcde"), 5, S("12345"), S("abcde12345"));
73 test(S("abcde"), 5, S("1234567890"), S("abcde1234567890"));
74 test(S("abcde"), 5, S("12345678901234567890"), S("abcde12345678901234567890"));
75 test(S("abcde"), 6, S(""), S("can't happen"));
76 test(S("abcde"), 6, S("12345"), S("can't happen"));
77 test(S("abcde"), 6, S("1234567890"), S("can't happen"));
78 test(S("abcde"), 6, S("12345678901234567890"), S("can't happen"));
79 test(S("abcdefghij"), 0, S(""), S("abcdefghij"));
80 test(S("abcdefghij"), 0, S("12345"), S("12345abcdefghij"));
81 test(S("abcdefghij"), 0, S("1234567890"), S("1234567890abcdefghij"));
82 test(S("abcdefghij"), 0, S("12345678901234567890"), S("12345678901234567890abcdefghij"));
83 test(S("abcdefghij"), 1, S(""), S("abcdefghij"));
84 test(S("abcdefghij"), 1, S("12345"), S("a12345bcdefghij"));
85 test(S("abcdefghij"), 1, S("1234567890"), S("a1234567890bcdefghij"));
86 test(S("abcdefghij"), 1, S("12345678901234567890"), S("a12345678901234567890bcdefghij"));
87 test(S("abcdefghij"), 5, S(""), S("abcdefghij"));
88 test(S("abcdefghij"), 5, S("12345"), S("abcde12345fghij"));
89 test(S("abcdefghij"), 5, S("1234567890"), S("abcde1234567890fghij"));
90 test(S("abcdefghij"), 5, S("12345678901234567890"), S("abcde12345678901234567890fghij"));
91 test(S("abcdefghij"), 9, S(""), S("abcdefghij"));
92 test(S("abcdefghij"), 9, S("12345"), S("abcdefghi12345j"));
93 test(S("abcdefghij"), 9, S("1234567890"), S("abcdefghi1234567890j"));
94 test(S("abcdefghij"), 9, S("12345678901234567890"), S("abcdefghi12345678901234567890j"));
95 test(S("abcdefghij"), 10, S(""), S("abcdefghij"));
96 test(S("abcdefghij"), 10, S("12345"), S("abcdefghij12345"));
97 test(S("abcdefghij"), 10, S("1234567890"), S("abcdefghij1234567890"));
98 test(S("abcdefghij"), 10, S("12345678901234567890"), S("abcdefghij12345678901234567890"));
99 test(S("abcdefghij"), 11, S(""), S("can't happen"));
100 test(S("abcdefghij"), 11, S("12345"), S("can't happen"));
101 test(S("abcdefghij"), 11, S("1234567890"), S("can't happen"));
102 test(S("abcdefghij"), 11, S("12345678901234567890"), S("can't happen"));
103 test(S("abcdefghijklmnopqrst"), 0, S(""), S("abcdefghijklmnopqrst"));
104 test(S("abcdefghijklmnopqrst"), 0, S("12345"), S("12345abcdefghijklmnopqrst"));
105 test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), S("1234567890abcdefghijklmnopqrst"));
106 test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), S("12345678901234567890abcdefghijklmnopqrst"));
107 test(S("abcdefghijklmnopqrst"), 1, S(""), S("abcdefghijklmnopqrst"));
108 test(S("abcdefghijklmnopqrst"), 1, S("12345"), S("a12345bcdefghijklmnopqrst"));
109 test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), S("a1234567890bcdefghijklmnopqrst"));
110 test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), S("a12345678901234567890bcdefghijklmnopqrst"));
111 test(S("abcdefghijklmnopqrst"), 10, S(""), S("abcdefghijklmnopqrst"));
112 test(S("abcdefghijklmnopqrst"), 10, S("12345"), S("abcdefghij12345klmnopqrst"));
113 test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), S("abcdefghij1234567890klmnopqrst"));
114 test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), S("abcdefghij12345678901234567890klmnopqrst"));
115 test(S("abcdefghijklmnopqrst"), 19, S(""), S("abcdefghijklmnopqrst"));
116 test(S("abcdefghijklmnopqrst"), 19, S("12345"), S("abcdefghijklmnopqrs12345t"));
117 test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), S("abcdefghijklmnopqrs1234567890t"));
118 test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890t"));
119 test(S("abcdefghijklmnopqrst"), 20, S(""), S("abcdefghijklmnopqrst"));
120 test(S("abcdefghijklmnopqrst"), 20, S("12345"), S("abcdefghijklmnopqrst12345"));
121 test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), S("abcdefghijklmnopqrst1234567890"));
122 test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));
123 test(S("abcdefghijklmnopqrst"), 21, S(""), S("can't happen"));
124 test(S("abcdefghijklmnopqrst"), 21, S("12345"), S("can't happen"));
125 test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), S("can't happen"));
126 test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), S("can't happen"));
127}
128
129TEST_CONSTEXPR_CXX20 bool test() {
130 test_string<std::string>();
131#if TEST_STD_VER >= 11
132 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
133 test_string<std::basic_string<char, std::char_traits<char>, safe_allocator<char>>>();
134#endif
135
136#if TEST_STD_VER >= 11
137 { // LWG 2946
138 std::string s;
139 s.insert(0, {"abc", 1});
140 assert(s.size() == 1);
141 assert(s == "a");
142 }
143#endif
144
145 return true;
146}
147
148int main(int, char**) {
149 test();
150#if TEST_STD_VER > 17
151 static_assert(test());
152#endif
153
154 return 0;
155}
156

source code of libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_string.pass.cpp