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// template<> struct char_traits<char>
12
13// static char_type* move(char_type* s1, const char_type* s2, size_t n);
14
15#include <string>
16#include <cassert>
17
18#include "test_macros.h"
19
20TEST_CONSTEXPR_CXX20 bool test() {
21 char s1[] = {1, 2, 3};
22 assert(std::char_traits<char>::move(s1, s1 + 1, 2) == s1);
23 assert(s1[0] == char(2));
24 assert(s1[1] == char(3));
25 assert(s1[2] == char(3));
26 s1[2] = char(0);
27 assert(std::char_traits<char>::move(s1 + 1, s1, 2) == s1 + 1);
28 assert(s1[0] == char(2));
29 assert(s1[1] == char(2));
30 assert(s1[2] == char(3));
31 assert(std::char_traits<char>::move(NULL, s1, 0) == NULL);
32 assert(std::char_traits<char>::move(s1, NULL, 0) == s1);
33
34 return true;
35}
36
37int main(int, char**) {
38 test();
39
40#if TEST_STD_VER > 17
41 static_assert(test());
42#endif
43
44 return 0;
45}
46

source code of libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/move.pass.cpp