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52066eae | 1 | // { dg-do run { target c++11 } } |
9b817548 | 2 | |
7adcbafe | 3 | // Copyright (C) 2014-2022 Free Software Foundation, Inc. |
9b817548 JW |
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 | ||
26 | const 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 | ||
33 | void | |
34 | append(std::ostringstream& ss, std::string& s, const std::string& t) | |
35 | { | |
36 | ss << t; | |
37 | s += t; | |
38 | } | |
39 | ||
40 | // assign | |
41 | void | |
42 | test01() | |
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 | |
69 | void | |
70 | test02() | |
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 | ||
100 | void | |
101 | test03() | |
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 | ||
111 | int | |
112 | main() | |
113 | { | |
114 | test01(); | |
115 | test02(); | |
116 | test03(); | |
117 | } |