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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libstdc++-v3/testsuite/27_io/basic_istream/ignore/char/2.cc | |
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Diffstat (limited to 'libstdc++-v3/testsuite/27_io/basic_istream/ignore/char/2.cc')
-rw-r--r-- | libstdc++-v3/testsuite/27_io/basic_istream/ignore/char/2.cc | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/27_io/basic_istream/ignore/char/2.cc b/libstdc++-v3/testsuite/27_io/basic_istream/ignore/char/2.cc new file mode 100644 index 000000000..05236fd57 --- /dev/null +++ b/libstdc++-v3/testsuite/27_io/basic_istream/ignore/char/2.cc @@ -0,0 +1,87 @@ +// Copyright (C) 2004, 2005, 2006, 2007, 2009 Free Software Foundation +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING3. If not see +// <http://www.gnu.org/licenses/>. + +// 27.6.1.3 unformatted input functions + +// { dg-require-fileio "" } + +#include <istream> +#include <string> +#include <fstream> +#include <limits> +#include <cstdlib> +#include <testsuite_hooks.h> + +using namespace std; + +string prepare(string::size_type len, unsigned nchunks, char delim) +{ + string ret; + for (unsigned i = 0; i < nchunks; ++i) + { + for (string::size_type j = 0; j < len; ++j) + ret.push_back('a' + rand() % 26); + len *= 2; + ret.push_back(delim); + } + return ret; +} + +void check(istream& stream, const string& str, unsigned nchunks, char delim) +{ + bool test __attribute__((unused)) = true; + + string::size_type index = 0, index_new = 0; + unsigned n = 0; + + while (stream.ignore(numeric_limits<streamsize>::max(), delim).good()) + { + index_new = str.find(delim, index); + VERIFY( static_cast<string::size_type>(stream.gcount()) == + index_new - index + 1 ); + index = index_new + 1; + ++n; + } + VERIFY( stream.gcount() == 0 ); + VERIFY( !stream.fail() ); + VERIFY( n == nchunks ); +} + +void test01() +{ + const char filename[] = "istream_ignore.txt"; + + const char delim = '|'; + const unsigned nchunks = 10; + const string data = prepare(555, nchunks, delim); + + ofstream ofstrm; + ofstrm.open(filename); + ofstrm.write(data.data(), data.size()); + ofstrm.close(); + + ifstream ifstrm; + ifstrm.open(filename); + check(ifstrm, data, nchunks, delim); + ifstrm.close(); +} + +int main() +{ + test01(); + return 0; +} |