92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
// { dg-options "-std=gnu++17" }
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// Copyright (C) 2013-2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// inserters
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// NB: This file is predicated on sstreams, istreams, and ostreams
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// working, not to mention other major details like char_traits, and
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// all of the string_view class.
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#include <string_view>
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#include <string>
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#include <fstream>
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#include <iostream>
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#include <testsuite_hooks.h>
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// testing basic_filebuf::xsputn via stress testing with large string_views
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// based on a bug report libstdc++ 9
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// mode == out
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void
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test05(std::size_t size)
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{
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bool test = true;
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const char filename[] = "inserters_extractors-2.txt";
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const wchar_t fillc = L'f';
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std::wofstream ofs(filename);
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std::wstring str(size, fillc);
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std::wstring_view strv(str);
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// sanity checks
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VERIFY( str.size() == size );
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VERIFY( ofs.good() );
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// stress test
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ofs << str << std::endl;
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if (!ofs.good())
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test = false;
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ofs << str << std::endl;
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if (!ofs.good())
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test = false;
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VERIFY( str.size() == size );
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VERIFY( ofs.good() );
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ofs.close();
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// sanity check on the written file
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std::wifstream ifs(filename);
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std::size_t count = 0;
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wchar_t c;
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while (count <= (2 * size) + 4)
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{
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ifs >> c;
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if (ifs.good() && c == fillc)
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{
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++count;
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c = '0';
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}
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else
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break;
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}
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VERIFY( count == 2 * size );
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}
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int
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main()
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{
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test05(1);
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test05(1000);
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test05(10000);
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return 0;
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}
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