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 // void swap(basic_string& s);
13
14 #include <string>
15 #include <stdexcept>
16 #include <algorithm>
17 #include <cassert>
18
19 #include "test_macros.h"
20 #include "min_allocator.h"
21
22 template <class S>
23 void
test(S s1,S s2)24 test(S s1, S s2)
25 {
26 S s1_ = s1;
27 S s2_ = s2;
28 s1.swap(s2);
29 LIBCPP_ASSERT(s1.__invariants());
30 LIBCPP_ASSERT(s2.__invariants());
31 assert(s1 == s2_);
32 assert(s2 == s1_);
33 }
34
main()35 int main()
36 {
37 {
38 typedef std::string S;
39 test(S(""), S(""));
40 test(S(""), S("12345"));
41 test(S(""), S("1234567890"));
42 test(S(""), S("12345678901234567890"));
43 test(S("abcde"), S(""));
44 test(S("abcde"), S("12345"));
45 test(S("abcde"), S("1234567890"));
46 test(S("abcde"), S("12345678901234567890"));
47 test(S("abcdefghij"), S(""));
48 test(S("abcdefghij"), S("12345"));
49 test(S("abcdefghij"), S("1234567890"));
50 test(S("abcdefghij"), S("12345678901234567890"));
51 test(S("abcdefghijklmnopqrst"), S(""));
52 test(S("abcdefghijklmnopqrst"), S("12345"));
53 test(S("abcdefghijklmnopqrst"), S("1234567890"));
54 test(S("abcdefghijklmnopqrst"), S("12345678901234567890"));
55 }
56 #if TEST_STD_VER >= 11
57 {
58 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
59 test(S(""), S(""));
60 test(S(""), S("12345"));
61 test(S(""), S("1234567890"));
62 test(S(""), S("12345678901234567890"));
63 test(S("abcde"), S(""));
64 test(S("abcde"), S("12345"));
65 test(S("abcde"), S("1234567890"));
66 test(S("abcde"), S("12345678901234567890"));
67 test(S("abcdefghij"), S(""));
68 test(S("abcdefghij"), S("12345"));
69 test(S("abcdefghij"), S("1234567890"));
70 test(S("abcdefghij"), S("12345678901234567890"));
71 test(S("abcdefghijklmnopqrst"), S(""));
72 test(S("abcdefghijklmnopqrst"), S("12345"));
73 test(S("abcdefghijklmnopqrst"), S("1234567890"));
74 test(S("abcdefghijklmnopqrst"), S("12345678901234567890"));
75 }
76 #endif
77 }
78