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fbd26352 | 1 | // Copyright (C) 2005-2019 Free Software Foundation, Inc. |
bb135391 | 2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6bc9506f | 6 | // Free Software Foundation; either version 3, or (at your option) |
bb135391 | 7 | // any later version. |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
6bc9506f | 15 | // with this library; see the file COPYING3. If not see |
16 | // <http://www.gnu.org/licenses/>. | |
bb135391 | 17 | |
18 | // 27.6.2.4 basic_ostream seek members [lib.ostream.seeks] | |
19 | ||
20 | #include <ostream> | |
21 | #include <istream> | |
22 | #include <sstream> | |
23 | #include <testsuite_hooks.h> | |
24 | ||
25 | const wchar_t* s = L" lootpack, peanut butter wolf, rob swift, madlib, quasimoto"; | |
26 | const int times = 10; | |
27 | ||
28 | void write_rewind(std::wiostream& stream) | |
29 | { | |
bb135391 | 30 | for (int j = 0; j < times; j++) |
31 | { | |
32 | std::streampos begin = stream.tellp(); | |
33 | ||
34 | for (int i = 0; i < times; ++i) | |
35 | stream << j << L'-' << i << s << L'\n'; | |
36 | ||
37 | stream.seekp(begin); | |
38 | } | |
39 | VERIFY( stream.good() ); | |
40 | } | |
41 | ||
42 | void check_contents(std::wiostream& stream) | |
43 | { | |
bb135391 | 44 | stream.clear(); |
45 | stream.seekg(0, std::wios::beg); | |
46 | int i = 0; | |
47 | int loop = times * times + 2; | |
48 | while (i < loop) | |
49 | { | |
50 | stream.ignore(80, L'\n'); | |
51 | if (stream.good()) | |
52 | ++i; | |
53 | else | |
54 | break; | |
55 | } | |
56 | VERIFY( i == times ); | |
57 | } | |
58 | ||
59 | // stringstream | |
60 | // libstdc++/2346 | |
61 | // N.B. The original testcase was broken, using tellg/seekg in write_rewind. | |
62 | void test03() | |
63 | { | |
64 | std::wstringstream sstrm; | |
65 | ||
66 | write_rewind(sstrm); | |
67 | check_contents(sstrm); | |
68 | } | |
69 | ||
70 | int main() | |
71 | { | |
72 | test03(); | |
73 | return 0; | |
74 | } |