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=(basic_string_view<charT, traits> sv); // 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
20 template <class S, class SV>
test(S s1,SV sv)21 TEST_CONSTEXPR_CXX20 void test(S s1, SV sv) {
22 typedef typename S::traits_type T;
23 s1 = sv;
24 LIBCPP_ASSERT(s1.__invariants());
25 assert(s1.size() == sv.size());
26 assert(T::compare(s1.data(), sv.data(), s1.size()) == 0);
27 assert(s1.capacity() >= s1.size());
28 LIBCPP_ASSERT(is_string_asan_correct(s1));
29 }
30
31 template <class S>
test_string()32 TEST_CONSTEXPR_CXX20 void test_string() {
33 typedef std::string_view SV;
34 test(S(), SV(""));
35 test(S("1"), SV(""));
36 test(S(), SV("1"));
37 test(S("1"), SV("2"));
38 test(S("1"), SV("2"));
39
40 test(S(), SV("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
41 test(S("123456789"), SV("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
42 test(S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"), SV("123456789"));
43 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
44 SV("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
45 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
46 "1234567890123456789012345678901234567890123456789012345678901234567890"),
47 SV("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
48 }
49
test()50 TEST_CONSTEXPR_CXX20 bool test() {
51 test_string<std::string>();
52 #if TEST_STD_VER >= 11
53 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
54 test_string<std::basic_string<char, std::char_traits<char>, safe_allocator<char>>>();
55 #endif
56
57 return true;
58 }
59
main(int,char **)60 int main(int, char**) {
61 test();
62 #if TEST_STD_VER > 17
63 static_assert(test());
64 #endif
65
66 return 0;
67 }
68