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// assign(size_type n, charT c); // constexpr since C++20
13
14#include <string>
15#include <cassert>
16
17#include "test_macros.h"
18#include "min_allocator.h"
19#include "asan_testing.h"
20
21template <class S>
22TEST_CONSTEXPR_CXX20 void test(S s, typename S::size_type n, typename S::value_type c, S expected) {
23 s.assign(n, c);
24 LIBCPP_ASSERT(s.__invariants());
25 assert(s == expected);
26 LIBCPP_ASSERT(is_string_asan_correct(s));
27}
28
29template <class S>
30TEST_CONSTEXPR_CXX20 void test_string() {
31 test(S(), 0, 'a', S());
32 test(S(), 1, 'a', S(1, 'a'));
33 test(S(), 10, 'a', S(10, 'a'));
34 test(S(), 100, 'a', S(100, 'a'));
35
36 test(S("12345"), 0, 'a', S());
37 test(S("12345"), 1, 'a', S(1, 'a'));
38 test(S("12345"), 10, 'a', S(10, 'a'));
39
40 test(S("12345678901234567890"), 0, 'a', S());
41 test(S("12345678901234567890"), 1, 'a', S(1, 'a'));
42 test(S("12345678901234567890"), 10, 'a', S(10, 'a'));
43}
44
45TEST_CONSTEXPR_CXX20 bool test() {
46 test_string<std::string>();
47#if TEST_STD_VER >= 11
48 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
49 test_string<std::basic_string<char, std::char_traits<char>, safe_allocator<char>>>();
50#endif
51
52 return true;
53}
54
55int main(int, char**) {
56 test();
57#if TEST_STD_VER > 17
58 static_assert(test());
59#endif
60
61 return 0;
62}
63

source code of libcxx/test/std/strings/basic.string/string.modifiers/string_assign/size_char.pass.cpp