1// { dg-options "-std=gnu++11" }
2
3// Copyright (C) 2014-2015 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 3, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15
16// You should have received a copy of the GNU General Public License along
17// with this library; see the file COPYING3.  If not see
18// <http://www.gnu.org/licenses/>.
19
20// 27.8.4.2 Assign and swap [ostringstream.assign]
21
22#include <sstream>
23#include <string>
24#include <testsuite_hooks.h>
25
26const std::string strings[] = {
27  "one could carry out the description of a machine, ",
28  "no matter how complicated, ",
29  "in characters which would be merely the letters of the alphabet, and so ",
30  "provide the mind with a method of knowing the machine and all its parts"
31};
32
33void
34append(std::ostringstream& ss, std::string& s, const std::string& t)
35{
36  ss << t;
37  s += t;
38}
39
40// assign
41void
42test01()
43{
44  std::string exp;
45  std::ostringstream s1;
46  append(s1, exp, strings[0]);
47
48  std::ostringstream s2;
49  s2 = std::move(s1);
50  VERIFY( s2.str() == exp );
51  append(s2, exp, strings[1]);
52  VERIFY( s2.str() == exp );
53
54  std::ostringstream s3;
55  s3 = std::move(s2);
56  VERIFY( s3.str() == exp );
57  append(s3, exp, strings[2]);
58  VERIFY( s3.str() == exp );
59
60  s1.setstate(std::ios::failbit);
61  s1 = std::move(s3);
62  VERIFY( s1.good() );
63  VERIFY( s1.str() == exp );
64  append(s1, exp, strings[3]);
65  VERIFY( s1.str() == exp );
66}
67
68// swap
69void
70test02()
71{
72  std::string exp;
73  std::ostringstream s1;
74  append(s1, exp, strings[0]);
75
76  std::ostringstream s2;
77  s2.swap(s1);
78  VERIFY( s1.str().empty() );
79  VERIFY( s2.str() == exp );
80  append(s2, exp, strings[1]);
81  VERIFY( s2.str() == exp );
82
83  std::ostringstream s3;
84  swap(s3, s2);
85  VERIFY( s2.str().empty() );
86  VERIFY( s3.str() == exp );
87  append(s3, exp, strings[2]);
88  VERIFY( s3.str() == exp );
89
90  s1.setstate(std::ios::failbit);
91  swap(s1, s3);
92  VERIFY( s1.good() );
93  VERIFY( s3.fail() );
94  VERIFY( s2.str().empty() );
95  VERIFY( s1.str() == exp );
96  append(s1, exp, strings[3]);
97  VERIFY( s1.str() == exp );
98}
99
100void
101test03()
102{
103#ifdef _GLIBCXX_USE_WCHAR_T
104  std::wistringstream s0, s;
105  s = std::move(s0);
106  s.swap(s0);
107  swap(s, s0);
108#endif
109}
110
111int
112main()
113{
114  test01();
115  test02();
116  test03();
117}
118