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

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