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 // append(const basic_string<charT,traits>& 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 s,S str,S expected)23 test(S s, S str, S expected)
24 {
25 s.append(str);
26 LIBCPP_ASSERT(s.__invariants());
27 assert(s == expected);
28 }
29
main()30 int main()
31 {
32 {
33 typedef std::string S;
34 test(S(), S(), S());
35 test(S(), S("12345"), S("12345"));
36 test(S(), S("1234567890"), S("1234567890"));
37 test(S(), S("12345678901234567890"), S("12345678901234567890"));
38
39 test(S("12345"), S(), S("12345"));
40 test(S("12345"), S("12345"), S("1234512345"));
41 test(S("12345"), S("1234567890"), S("123451234567890"));
42 test(S("12345"), S("12345678901234567890"), S("1234512345678901234567890"));
43
44 test(S("1234567890"), S(), S("1234567890"));
45 test(S("1234567890"), S("12345"), S("123456789012345"));
46 test(S("1234567890"), S("1234567890"), S("12345678901234567890"));
47 test(S("1234567890"), S("12345678901234567890"), S("123456789012345678901234567890"));
48
49 test(S("12345678901234567890"), S(), S("12345678901234567890"));
50 test(S("12345678901234567890"), S("12345"), S("1234567890123456789012345"));
51 test(S("12345678901234567890"), S("1234567890"), S("123456789012345678901234567890"));
52 test(S("12345678901234567890"), S("12345678901234567890"),
53 S("1234567890123456789012345678901234567890"));
54 }
55 #if TEST_STD_VER >= 11
56 {
57 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
58 test(S(), S(), S());
59 test(S(), S("12345"), S("12345"));
60 test(S(), S("1234567890"), S("1234567890"));
61 test(S(), S("12345678901234567890"), S("12345678901234567890"));
62
63 test(S("12345"), S(), S("12345"));
64 test(S("12345"), S("12345"), S("1234512345"));
65 test(S("12345"), S("1234567890"), S("123451234567890"));
66 test(S("12345"), S("12345678901234567890"), S("1234512345678901234567890"));
67
68 test(S("1234567890"), S(), S("1234567890"));
69 test(S("1234567890"), S("12345"), S("123456789012345"));
70 test(S("1234567890"), S("1234567890"), S("12345678901234567890"));
71 test(S("1234567890"), S("12345678901234567890"), S("123456789012345678901234567890"));
72
73 test(S("12345678901234567890"), S(), S("12345678901234567890"));
74 test(S("12345678901234567890"), S("12345"), S("1234567890123456789012345"));
75 test(S("12345678901234567890"), S("1234567890"), S("123456789012345678901234567890"));
76 test(S("12345678901234567890"), S("12345678901234567890"),
77 S("1234567890123456789012345678901234567890"));
78 }
79 #endif
80
81 #if TEST_STD_VER > 3
82 { // LWG 2946
83 std::string s;
84 s.append({"abc", 1});
85 assert(s.size() == 1);
86 assert(s == "a");
87 }
88 #endif
89 }
90