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>& operator+=(charT c);
13
14 #include <string>
15 #include <cassert>
16
17 #include "test_macros.h"
18 #include "min_allocator.h"
19
20 template <class S>
21 void
test(S s,typename S::value_type str,S expected)22 test(S s, typename S::value_type str, S expected)
23 {
24 s += str;
25 LIBCPP_ASSERT(s.__invariants());
26 assert(s == expected);
27 }
28
main()29 int main()
30 {
31 {
32 typedef std::string S;
33 test(S(), 'a', S("a"));
34 test(S("12345"), 'a', S("12345a"));
35 test(S("1234567890"), 'a', S("1234567890a"));
36 test(S("12345678901234567890"), 'a', S("12345678901234567890a"));
37 }
38 #if TEST_STD_VER >= 11
39 {
40 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
41 test(S(), 'a', S("a"));
42 test(S("12345"), 'a', S("12345a"));
43 test(S("1234567890"), 'a', S("1234567890a"));
44 test(S("12345678901234567890"), 'a', S("12345678901234567890a"));
45 }
46 #endif
47 }
48