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 pos, string_view sv); // 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
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_EXCEPTIONS
31 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#endif
41}
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 >= 11
131 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
132#endif
133
134 { // test inserting into self
135 typedef std::string S;
136 S s_short = "123/";
137 S s_long = "Lorem ipsum dolor sit amet, consectetur/";
138
139 s_short.insert(pos: 0, s: s_short.c_str());
140 assert(s_short == "123/123/");
141 s_short.insert(pos: 0, s: s_short.c_str());
142 assert(s_short == "123/123/123/123/");
143 s_short.insert(pos: 0, s: s_short.c_str());
144 assert(s_short == "123/123/123/123/123/123/123/123/");
145
146 s_long.insert(pos: 0, s: 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 > 17
156 static_assert(test());
157#endif
158
159 return 0;
160}
161

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