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>& operator+=(const charT* s); // constexpr since C++20
12
13#include <string>
14#include <cassert>
15
16#include "test_macros.h"
17#include "min_allocator.h"
18#include "asan_testing.h"
19
20template <class S>
21TEST_CONSTEXPR_CXX20 void test(S s, const typename S::value_type* str, S expected) {
22 s += str;
23 LIBCPP_ASSERT(s.__invariants());
24 assert(s == expected);
25 LIBCPP_ASSERT(is_string_asan_correct(s));
26}
27
28template <class S>
29TEST_CONSTEXPR_CXX20 void test_string() {
30 test(S(), "", S());
31 test(S(), "12345", S("12345"));
32 test(S(), "1234567890", S("1234567890"));
33 test(S(), "12345678901234567890", S("12345678901234567890"));
34
35 test(S("12345"), "", S("12345"));
36 test(S("12345"), "12345", S("1234512345"));
37 test(S("12345"), "1234567890", S("123451234567890"));
38 test(S("12345"), "12345678901234567890", S("1234512345678901234567890"));
39
40 test(S("1234567890"), "", S("1234567890"));
41 test(S("1234567890"), "12345", S("123456789012345"));
42 test(S("1234567890"), "1234567890", S("12345678901234567890"));
43 test(S("1234567890"), "12345678901234567890", S("123456789012345678901234567890"));
44
45 test(S("12345678901234567890"), "", S("12345678901234567890"));
46 test(S("12345678901234567890"), "12345", S("1234567890123456789012345"));
47 test(S("12345678901234567890"), "1234567890", S("123456789012345678901234567890"));
48 test(S("12345678901234567890"), "12345678901234567890", S("1234567890123456789012345678901234567890"));
49
50 // Starting from long string (no SSO)
51 test(S("1234567890123456789012345678901234567890"), "", S("1234567890123456789012345678901234567890"));
52 test(S("1234567890123456789012345678901234567890"), "12345", S("123456789012345678901234567890123456789012345"));
53 test(S("1234567890123456789012345678901234567890"),
54 "12345678901234567890",
55 S("123456789012345678901234567890123456789012345678901234567890"));
56 test(S("1234567890123456789012345678901234567890"),
57 "1234567890123456789012345678901234567890",
58 S("12345678901234567890123456789012345678901234567890123456789012345678901234567890"));
59}
60
61TEST_CONSTEXPR_CXX20 bool test() {
62 test_string<std::string>();
63#if TEST_STD_VER >= 11
64 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
65 test_string<std::basic_string<char, std::char_traits<char>, safe_allocator<char>>>();
66#endif
67
68 return true;
69}
70
71int main(int, char**) {
72 test();
73#if TEST_STD_VER > 17
74 static_assert(test());
75#endif
76
77 return 0;
78}
79

source code of libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/pointer.pass.cpp