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=(charT c);
12 
13 #include <string>
14 #include <cassert>
15 
16 #include "test_macros.h"
17 #include "min_allocator.h"
18 
19 template <class S>
20 void
21 test(S s1, typename S::value_type s2)
22 {
23     typedef typename S::traits_type T;
24     s1 = s2;
25     LIBCPP_ASSERT(s1.__invariants());
26     assert(s1.size() == 1);
27     assert(T::eq(s1[0], s2));
28     assert(s1.capacity() >= s1.size());
29 }
30 
31 bool test() {
32   {
33     typedef std::string S;
34     test(S(), 'a');
35     test(S("1"), 'a');
36     test(S("123456789"), 'a');
37     test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), 'a');
38   }
39 #if TEST_STD_VER >= 11
40   {
41     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
42     test(S(), 'a');
43     test(S("1"), 'a');
44     test(S("123456789"), 'a');
45     test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), 'a');
46   }
47 #endif
48 
49   return true;
50 }
51 
52 int main(int, char**)
53 {
54   test();
55 #if TEST_STD_VER > 17
56   // static_assert(test());
57 #endif
58 
59   return 0;
60 }
61