1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // <string>
11
12 // basic_string<charT,traits,Allocator>&
13 // operator=(const basic_string<charT,traits,Allocator>& str);
14
15 #include <string>
16 #include <cassert>
17
18 #include "test_macros.h"
19 #include "min_allocator.h"
20
21 template <class S>
22 void
test(S s1,const S & s2)23 test(S s1, const S& s2)
24 {
25 s1 = s2;
26 LIBCPP_ASSERT(s1.__invariants());
27 assert(s1 == s2);
28 assert(s1.capacity() >= s1.size());
29 }
30
main()31 int main()
32 {
33 {
34 typedef std::string S;
35 test(S(), S());
36 test(S("1"), S());
37 test(S(), S("1"));
38 test(S("1"), S("2"));
39 test(S("1"), S("2"));
40
41 test(S(),
42 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
43 test(S("123456789"),
44 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
45 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
46 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
47 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
48 "1234567890123456789012345678901234567890123456789012345678901234567890"),
49 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
50 }
51 #if TEST_STD_VER >= 11
52 {
53 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
54 test(S(), S());
55 test(S("1"), S());
56 test(S(), S("1"));
57 test(S("1"), S("2"));
58 test(S("1"), S("2"));
59
60 test(S(),
61 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
62 test(S("123456789"),
63 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
64 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
65 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
66 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
67 "1234567890123456789012345678901234567890123456789012345678901234567890"),
68 S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
69 }
70 #endif
71
72 #if TEST_STD_VER > 3
73 { // LWG 2946
74 std::string s;
75 s = {"abc", 1};
76 assert(s.size() == 1);
77 assert(s == "a");
78 }
79 #endif
80 }
81