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 //   operator=(const charT* s);
13 
14 #include <string>
15 #include <cassert>
16 
17 #include "test_macros.h"
18 #include "min_allocator.h"
19 
20 template <class S>
21 void
test(S s1,const typename S::value_type * s2)22 test(S s1, const typename S::value_type* s2)
23 {
24     typedef typename S::traits_type T;
25     s1 = s2;
26     LIBCPP_ASSERT(s1.__invariants());
27     assert(s1.size() == T::length(s2));
28     assert(T::compare(s1.data(), s2, s1.size()) == 0);
29     assert(s1.capacity() >= s1.size());
30 }
31 
main(int,char **)32 int main(int, char**)
33 {
34     {
35     typedef std::string S;
36     test(S(), "");
37     test(S("1"), "");
38     test(S(), "1");
39     test(S("1"), "2");
40     test(S("1"), "2");
41 
42     test(S(),
43          "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
44     test(S("123456789"),
45          "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
46     test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
47          "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
48     test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
49            "1234567890123456789012345678901234567890123456789012345678901234567890"),
50          "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
51     }
52 #if TEST_STD_VER >= 11
53     {
54     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
55     test(S(), "");
56     test(S("1"), "");
57     test(S(), "1");
58     test(S("1"), "2");
59     test(S("1"), "2");
60 
61     test(S(),
62          "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
63     test(S("123456789"),
64          "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
65     test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
66          "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
67     test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
68            "1234567890123456789012345678901234567890123456789012345678901234567890"),
69          "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
70     }
71 #endif
72 
73   return 0;
74 }
75