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 "min_allocator.h"
20
21 template <class S>
22 void
test(S s1,S s2)23 test(S s1, S s2)
24 {
25 S s1_ = s1;
26 S s2_ = s2;
27 s1.swap(s2);
28 assert(s1.__invariants());
29 assert(s2.__invariants());
30 assert(s1 == s2_);
31 assert(s2 == s1_);
32 }
33
main()34 int main()
35 {
36 {
37 typedef std::string S;
38 test(S(""), S(""));
39 test(S(""), S("12345"));
40 test(S(""), S("1234567890"));
41 test(S(""), S("12345678901234567890"));
42 test(S("abcde"), S(""));
43 test(S("abcde"), S("12345"));
44 test(S("abcde"), S("1234567890"));
45 test(S("abcde"), S("12345678901234567890"));
46 test(S("abcdefghij"), S(""));
47 test(S("abcdefghij"), S("12345"));
48 test(S("abcdefghij"), S("1234567890"));
49 test(S("abcdefghij"), S("12345678901234567890"));
50 test(S("abcdefghijklmnopqrst"), S(""));
51 test(S("abcdefghijklmnopqrst"), S("12345"));
52 test(S("abcdefghijklmnopqrst"), S("1234567890"));
53 test(S("abcdefghijklmnopqrst"), S("12345678901234567890"));
54 }
55 #if __cplusplus >= 201103L
56 {
57 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
58 test(S(""), S(""));
59 test(S(""), S("12345"));
60 test(S(""), S("1234567890"));
61 test(S(""), S("12345678901234567890"));
62 test(S("abcde"), S(""));
63 test(S("abcde"), S("12345"));
64 test(S("abcde"), S("1234567890"));
65 test(S("abcde"), S("12345678901234567890"));
66 test(S("abcdefghij"), S(""));
67 test(S("abcdefghij"), S("12345"));
68 test(S("abcdefghij"), S("1234567890"));
69 test(S("abcdefghij"), S("12345678901234567890"));
70 test(S("abcdefghijklmnopqrst"), S(""));
71 test(S("abcdefghijklmnopqrst"), S("12345"));
72 test(S("abcdefghijklmnopqrst"), S("1234567890"));
73 test(S("abcdefghijklmnopqrst"), S("12345678901234567890"));
74 }
75 #endif
76 }
77