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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/seekg/char/sstream.cc | |
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Diffstat (limited to 'libstdc++-v3/testsuite/27_io/basic_istream/seekg/char/sstream.cc')
-rw-r--r-- | libstdc++-v3/testsuite/27_io/basic_istream/seekg/char/sstream.cc | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/27_io/basic_istream/seekg/char/sstream.cc b/libstdc++-v3/testsuite/27_io/basic_istream/seekg/char/sstream.cc new file mode 100644 index 000000000..183decc9e --- /dev/null +++ b/libstdc++-v3/testsuite/27_io/basic_istream/seekg/char/sstream.cc @@ -0,0 +1,136 @@ +// 2000-06-29 bkoz + +// Copyright (C) 2000, 2001, 2002, 2003, 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 +// NB: ostream has a particular "seeks" category. Adopt this for istreams too. +// @require@ %-*.tst %-*.txt +// @diff@ %-*.tst %-*.txt + +// { dg-require-fileio "" } + +#include <istream> +#include <sstream> +#include <fstream> +#include <testsuite_hooks.h> + +// stringstreams +void test05(void) +{ + typedef std::istream::off_type off_type; + + bool test __attribute__((unused)) = true; + std::istream::pos_type pos01, pos02, pos03, pos04, pos05, pos06; + std::ios_base::iostate state01, state02; + const char str_lit01[] = "istream_seeks-1.tst"; + std::ifstream if01(str_lit01); + std::ifstream if02(str_lit01); + std::ifstream if03(str_lit01); + VERIFY( if01.good() ); + VERIFY( if02.good() ); + VERIFY( if03.good() ); + + std::stringbuf strbuf01(std::ios_base::in | std::ios_base::out); + if01 >> &strbuf01; + // initialize stringbufs that are ios_base::out + std::stringbuf strbuf03(strbuf01.str(), std::ios_base::out); + // initialize stringbufs that are ios_base::in + std::stringbuf strbuf02(strbuf01.str(), std::ios_base::in); + + std::istream is01(&strbuf01); + std::istream is02(&strbuf02); + std::istream is03(&strbuf03); + + // pos_type tellg() + // in | out + pos01 = is01.tellg(); + pos02 = is01.tellg(); + pos03 = is02.tellg(); + pos04 = is02.tellg(); + pos05 = is03.tellg(); + pos06 = is03.tellg(); + + // istream& seekg(pos_type) + // istream& seekg(off_type, ios_base::seekdir) + + // cur + // NB: see library issues list 136. It's the v-3 interp that seekg + // only sets the input buffer, or else istreams with buffers that + // have _M_mode == ios_base::out will fail to have consistency + // between seekg and tellg. + state01 = is01.rdstate(); + is01.seekg(10, std::ios_base::cur); + state02 = is01.rdstate(); + pos01 = is01.tellg(); + VERIFY( pos01 == pos02 + off_type(10) ); + VERIFY( state01 == state02 ); + pos02 = is01.tellg(); + VERIFY( pos02 == pos01 ); + + state01 = is02.rdstate(); + is02.seekg(10, std::ios_base::cur); + state02 = is02.rdstate(); + pos03 = is02.tellg(); + VERIFY( pos03 == pos04 + off_type(10) ); + VERIFY( state01 == state02 ); + pos04 = is02.tellg(); + VERIFY( pos03 == pos04 ); + + state01 = is03.rdstate(); + is03.seekg(10, std::ios_base::cur); + state02 = is03.rdstate(); + pos05 = is03.tellg(); + VERIFY( pos05 == pos06 ); // as only out buffer + VERIFY( state01 != state02 ); + pos06 = is03.tellg(); + VERIFY( pos05 == pos06 ); + + // beg + state01 = is01.rdstate(); + is01.seekg(20, std::ios_base::beg); + state02 = is01.rdstate(); + pos01 = is01.tellg(); + VERIFY( pos01 == pos02 + off_type(10) ); + VERIFY( state01 == state02 ); + pos02 = is01.tellg(); + VERIFY( pos02 == pos01 ); + + state01 = is02.rdstate(); + is02.seekg(20, std::ios_base::beg); + state02 = is02.rdstate(); + pos03 = is02.tellg(); + VERIFY( pos03 == pos04 + off_type(10) ); + VERIFY( state01 == state02 ); + pos04 = is02.tellg(); + VERIFY( pos03 == pos04 ); + + state01 = is03.rdstate(); + is03.seekg(20, std::ios_base::beg); + state02 = is03.rdstate(); + pos05 = is03.tellg(); + VERIFY( pos05 == pos06 ); // as only out buffer + VERIFY( state01 == state02 ); + pos06 = is03.tellg(); + VERIFY( pos05 == pos06 ); +} + +int main() +{ + test05(); + return 0; +} |