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_first_of(charT c, 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>
20TEST_CONSTEXPR_CXX20 void
21test(const S& s, typename S::value_type c, typename S::size_type pos, typename S::size_type x) {
22 LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(c, pos));
23 assert(s.find_first_of(c, pos) == x);
24 if (x != S::npos)
25 assert(pos <= x && x < s.size());
26}
27
28template <class S>
29TEST_CONSTEXPR_CXX20 void test(const S& s, typename S::value_type c, typename S::size_type x) {
30 LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(c));
31 assert(s.find_first_of(c) == x);
32 if (x != S::npos)
33 assert(x < s.size());
34}
35
36template <class S>
37TEST_CONSTEXPR_CXX20 void test_string() {
38 test(S(""), 'e', 0, S::npos);
39 test(S(""), 'e', 1, S::npos);
40 test(S("kitcj"), 'e', 0, S::npos);
41 test(S("qkamf"), 'e', 1, S::npos);
42 test(S("nhmko"), 'e', 2, S::npos);
43 test(S("tpsaf"), 'e', 4, S::npos);
44 test(S("lahfb"), 'e', 5, S::npos);
45 test(S("irkhs"), 'e', 6, S::npos);
46 test(S("gmfhdaipsr"), 'e', 0, S::npos);
47 test(S("kantesmpgj"), 'e', 1, 4);
48 test(S("odaftiegpm"), 'e', 5, 6);
49 test(S("oknlrstdpi"), 'e', 9, S::npos);
50 test(S("eolhfgpjqk"), 'e', 10, S::npos);
51 test(S("pcdrofikas"), 'e', 11, S::npos);
52 test(S("nbatdlmekrgcfqsophij"), 'e', 0, 7);
53 test(S("bnrpehidofmqtcksjgla"), 'e', 1, 4);
54 test(S("jdmciepkaqgotsrfnhlb"), 'e', 10, S::npos);
55 test(S("jtdaefblsokrmhpgcnqi"), 'e', 19, S::npos);
56 test(S("hkbgspofltajcnedqmri"), 'e', 20, S::npos);
57 test(S("oselktgbcapndfjihrmq"), 'e', 21, S::npos);
58
59 test(S(""), 'e', S::npos);
60 test(S("csope"), 'e', 4);
61 test(S("gfsmthlkon"), 'e', S::npos);
62 test(S("laenfsbridchgotmkqpj"), 'e', 2);
63}
64
65TEST_CONSTEXPR_CXX20 bool test() {
66 test_string<std::string>();
67#if TEST_STD_VER >= 11
68 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char> > >();
69#endif
70
71 return true;
72}
73
74int main(int, char**) {
75 test();
76#if TEST_STD_VER > 17
77 static_assert(test());
78#endif
79
80 return 0;
81}
82

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