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 "min_allocator.h"
19
20 template <class S>
21 void
test(S s,S str,S expected)22 test(S s, S str, S expected)
23 {
24 s += str;
25 assert(s.__invariants());
26 assert(s == expected);
27 }
28
main()29 int main()
30 {
31 {
32 typedef std::string S;
33 test(S(), S(), S());
34 test(S(), S("12345"), S("12345"));
35 test(S(), S("1234567890"), S("1234567890"));
36 test(S(), S("12345678901234567890"), S("12345678901234567890"));
37
38 test(S("12345"), S(), S("12345"));
39 test(S("12345"), S("12345"), S("1234512345"));
40 test(S("12345"), S("1234567890"), S("123451234567890"));
41 test(S("12345"), S("12345678901234567890"), S("1234512345678901234567890"));
42
43 test(S("1234567890"), S(), S("1234567890"));
44 test(S("1234567890"), S("12345"), S("123456789012345"));
45 test(S("1234567890"), S("1234567890"), S("12345678901234567890"));
46 test(S("1234567890"), S("12345678901234567890"), S("123456789012345678901234567890"));
47
48 test(S("12345678901234567890"), S(), S("12345678901234567890"));
49 test(S("12345678901234567890"), S("12345"), S("1234567890123456789012345"));
50 test(S("12345678901234567890"), S("1234567890"), S("123456789012345678901234567890"));
51 test(S("12345678901234567890"), S("12345678901234567890"),
52 S("1234567890123456789012345678901234567890"));
53 }
54 #if __cplusplus >= 201103L
55 {
56 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
57 test(S(), S(), S());
58 test(S(), S("12345"), S("12345"));
59 test(S(), S("1234567890"), S("1234567890"));
60 test(S(), S("12345678901234567890"), S("12345678901234567890"));
61
62 test(S("12345"), S(), S("12345"));
63 test(S("12345"), S("12345"), S("1234512345"));
64 test(S("12345"), S("1234567890"), S("123451234567890"));
65 test(S("12345"), S("12345678901234567890"), S("1234512345678901234567890"));
66
67 test(S("1234567890"), S(), S("1234567890"));
68 test(S("1234567890"), S("12345"), S("123456789012345"));
69 test(S("1234567890"), S("1234567890"), S("12345678901234567890"));
70 test(S("1234567890"), S("12345678901234567890"), S("123456789012345678901234567890"));
71
72 test(S("12345678901234567890"), S(), S("12345678901234567890"));
73 test(S("12345678901234567890"), S("12345"), S("1234567890123456789012345"));
74 test(S("12345678901234567890"), S("1234567890"), S("123456789012345678901234567890"));
75 test(S("12345678901234567890"), S("12345678901234567890"),
76 S("1234567890123456789012345678901234567890"));
77 }
78 #endif
79 }
80