1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <sstream>
10 
11 // template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
12 // class basic_ostringstream
13 
14 // void swap(basic_ostringstream& rhs);
15 
16 #include <sstream>
17 #include <cassert>
18 
19 #include "test_macros.h"
20 
main(int,char **)21 int main(int, char**)
22 {
23     {
24         std::ostringstream ss0(" 123 456");
25         std::ostringstream ss;
26         swap(ss, ss0);
27         assert(ss.rdbuf() != 0);
28         assert(ss.good());
29         assert(ss.str() == " 123 456");
30         int i = 234;
31         ss << i << ' ' << 567;
32         assert(ss.str() == "234 5676");
33         ss0 << i << ' ' << 567;
34         assert(ss0.str() == "234 567");
35     }
36 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
37     {
38         std::wostringstream ss0(L" 123 456");
39         std::wostringstream ss;
40         swap(ss, ss0);
41         assert(ss.rdbuf() != 0);
42         assert(ss.good());
43         assert(ss.str() == L" 123 456");
44         int i = 234;
45         ss << i << ' ' << 567;
46         assert(ss.str() == L"234 5676");
47         ss0 << i << ' ' << 567;
48         assert(ss0.str() == L"234 567");
49     }
50 #endif
51 
52   return 0;
53 }
54