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// size_type find(basic_string_view sv, size_type pos = 0) const; // constexpr since C++20
12
13#include <string>
14#include <cassert>
15
16#include "test_macros.h"
17#include "min_allocator.h"
18
19template <class S, class SV>
20TEST_CONSTEXPR_CXX20 void test(const S& s, SV sv, typename S::size_type pos, typename S::size_type x) {
21 LIBCPP_ASSERT_NOEXCEPT(s.find(sv, pos));
22 assert(s.find(sv, pos) == x);
23 if (x != S::npos)
24 assert(pos <= x && x + sv.size() <= s.size());
25}
26
27template <class S, class SV>
28TEST_CONSTEXPR_CXX20 void test(const S& s, SV sv, typename S::size_type x) {
29 LIBCPP_ASSERT_NOEXCEPT(s.find(sv));
30 assert(s.find(sv) == x);
31 if (x != S::npos)
32 assert(0 <= x && x + sv.size() <= s.size());
33}
34
35template <class S, class SV>
36TEST_CONSTEXPR_CXX20 void test0() {
37 test(S(""), SV(""), 0, 0);
38 test(S(""), SV("abcde"), 0, S::npos);
39 test(S(""), SV("abcdeabcde"), 0, S::npos);
40 test(S(""), SV("abcdeabcdeabcdeabcde"), 0, S::npos);
41 test(S(""), SV(""), 1, S::npos);
42 test(S(""), SV("abcde"), 1, S::npos);
43 test(S(""), SV("abcdeabcde"), 1, S::npos);
44 test(S(""), SV("abcdeabcdeabcdeabcde"), 1, S::npos);
45 test(S("abcde"), SV(""), 0, 0);
46 test(S("abcde"), SV("abcde"), 0, 0);
47 test(S("abcde"), SV("abcdeabcde"), 0, S::npos);
48 test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 0, S::npos);
49 test(S("abcde"), SV(""), 1, 1);
50 test(S("abcde"), SV("abcde"), 1, S::npos);
51 test(S("abcde"), SV("abcdeabcde"), 1, S::npos);
52 test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 1, S::npos);
53 test(S("abcde"), SV(""), 2, 2);
54 test(S("abcde"), SV("abcde"), 2, S::npos);
55 test(S("abcde"), SV("abcdeabcde"), 2, S::npos);
56 test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 2, S::npos);
57 test(S("abcde"), SV(""), 4, 4);
58 test(S("abcde"), SV("abcde"), 4, S::npos);
59 test(S("abcde"), SV("abcdeabcde"), 4, S::npos);
60 test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 4, S::npos);
61 test(S("abcde"), SV(""), 5, 5);
62 test(S("abcde"), SV("abcde"), 5, S::npos);
63 test(S("abcde"), SV("abcdeabcde"), 5, S::npos);
64 test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 5, S::npos);
65 test(S("abcde"), SV(""), 6, S::npos);
66 test(S("abcde"), SV("abcde"), 6, S::npos);
67 test(S("abcde"), SV("abcdeabcde"), 6, S::npos);
68 test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 6, S::npos);
69 test(S("abcdeabcde"), SV(""), 0, 0);
70 test(S("abcdeabcde"), SV("abcde"), 0, 0);
71 test(S("abcdeabcde"), SV("abcdeabcde"), 0, 0);
72 test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 0, S::npos);
73 test(S("abcdeabcde"), SV(""), 1, 1);
74 test(S("abcdeabcde"), SV("abcde"), 1, 5);
75 test(S("abcdeabcde"), SV("abcdeabcde"), 1, S::npos);
76 test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 1, S::npos);
77 test(S("abcdeabcde"), SV(""), 5, 5);
78 test(S("abcdeabcde"), SV("abcde"), 5, 5);
79 test(S("abcdeabcde"), SV("abcdeabcde"), 5, S::npos);
80 test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 5, S::npos);
81 test(S("abcdeabcde"), SV(""), 9, 9);
82 test(S("abcdeabcde"), SV("abcde"), 9, S::npos);
83 test(S("abcdeabcde"), SV("abcdeabcde"), 9, S::npos);
84 test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 9, S::npos);
85 test(S("abcdeabcde"), SV(""), 10, 10);
86 test(S("abcdeabcde"), SV("abcde"), 10, S::npos);
87 test(S("abcdeabcde"), SV("abcdeabcde"), 10, S::npos);
88 test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 10, S::npos);
89 test(S("abcdeabcde"), SV(""), 11, S::npos);
90 test(S("abcdeabcde"), SV("abcde"), 11, S::npos);
91 test(S("abcdeabcde"), SV("abcdeabcde"), 11, S::npos);
92 test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 11, S::npos);
93 test(S("abcdeabcdeabcdeabcde"), SV(""), 0, 0);
94 test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 0, 0);
95 test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 0, 0);
96 test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 0, 0);
97 test(S("abcdeabcdeabcdeabcde"), SV(""), 1, 1);
98 test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 1, 5);
99 test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 1, 5);
100 test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 1, S::npos);
101 test(S("abcdeabcdeabcdeabcde"), SV(""), 10, 10);
102 test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 10, 10);
103 test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 10, 10);
104 test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 10, S::npos);
105 test(S("abcdeabcdeabcdeabcde"), SV(""), 19, 19);
106 test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 19, S::npos);
107 test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 19, S::npos);
108 test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 19, S::npos);
109 test(S("abcdeabcdeabcdeabcde"), SV(""), 20, 20);
110 test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 20, S::npos);
111 test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 20, S::npos);
112 test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 20, S::npos);
113 test(S("abcdeabcdeabcdeabcde"), SV(""), 21, S::npos);
114 test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 21, S::npos);
115 test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 21, S::npos);
116 test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 21, S::npos);
117}
118
119template <class S, class SV>
120TEST_CONSTEXPR_CXX20 void test1() {
121 test(S(""), SV(""), 0);
122 test(S(""), SV("abcde"), S::npos);
123 test(S(""), SV("abcdeabcde"), S::npos);
124 test(S(""), SV("abcdeabcdeabcdeabcde"), S::npos);
125 test(S("abcde"), SV(""), 0);
126 test(S("abcde"), SV("abcde"), 0);
127 test(S("abcde"), SV("abcdeabcde"), S::npos);
128 test(S("abcde"), SV("abcdeabcdeabcdeabcde"), S::npos);
129 test(S("abcdeabcde"), SV(""), 0);
130 test(S("abcdeabcde"), SV("abcde"), 0);
131 test(S("abcdeabcde"), SV("abcdeabcde"), 0);
132 test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), S::npos);
133 test(S("abcdeabcdeabcdeabcde"), SV(""), 0);
134 test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 0);
135 test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 0);
136 test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 0);
137}
138
139template <class CharT, template <class> class Alloc>
140TEST_CONSTEXPR_CXX20 void test_string() {
141 using S = std::basic_string<CharT, std::char_traits<CharT>, Alloc<CharT> >;
142 using SV = std::basic_string_view<CharT, std::char_traits<CharT> >;
143 test0<S, SV>();
144 test1<S, SV>();
145}
146
147TEST_CONSTEXPR_CXX20 bool test() {
148 test_string<char, std::allocator>();
149#if TEST_STD_VER >= 11
150 test_string<char, min_allocator>();
151#endif
152
153 return true;
154}
155
156int main(int, char**) {
157 test();
158#if TEST_STD_VER > 17
159 static_assert(test());
160#endif
161
162 return 0;
163}
164

source code of libcxx/test/std/strings/basic.string/string.ops/string_find/string_view_size.pass.cpp