686 lines
17 KiB
C++
686 lines
17 KiB
C++
// Boost ios_state_unit_test.cpp test file ---------------------------------//
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// Copyright 2003 Daryle Walker. Use, modification, and distribution are
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// subject to the Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
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// See <http://www.boost.org/libs/io/> for the library's home page.
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// Revision History
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// 12 Sep 2003 Initial version (Daryle Walker)
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#include <boost/config.hpp>
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#include <boost/io/ios_state.hpp> // for boost::io::ios_flags_saver, etc.
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#include <boost/test/unit_test.hpp> // for main, BOOST_CHECK, etc.
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#include <cstddef> // for NULL
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#include <iomanip> // for std::setiosflags, etc.
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#include <ios> // for std::ios_base
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#include <iostream> // for std::cout, std::cerr, etc.
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#include <istream> // for std::iostream
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#include <locale> // for std::locale, std::numpunct
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#include <sstream> // for std::stringstream, etc.
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#if defined(BOOST_GCC) || (defined(BOOST_CLANG) && defined(BOOST_GNU_STDLIB))
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#include <stdexcept>
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#endif
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// Global constants
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int const word_index = std::ios_base::xalloc();
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// Facet with the (classic) bool names spelled backwards
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class backward_bool_names
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: public std::numpunct<char>
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{
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typedef std::numpunct<char> base_type;
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public:
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explicit backward_bool_names( std::size_t refs = 0 )
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: base_type( refs )
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{}
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protected:
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virtual ~backward_bool_names() {}
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virtual base_type::string_type do_truename() const
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{ return "eurt"; }
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virtual base_type::string_type do_falsename() const
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{ return "eslaf"; }
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};
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// Unit test for format-flag saving
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void
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ios_flags_saver_unit_test
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(
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)
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{
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using namespace std;
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stringstream ss;
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BOOST_CHECK_EQUAL( (ios_base::skipws | ios_base::dec), ss.flags() );
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{
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boost::io::ios_flags_saver ifs( ss );
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BOOST_CHECK_EQUAL( (ios_base::skipws | ios_base::dec), ss.flags() );
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ss << noskipws << fixed << boolalpha;
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BOOST_CHECK_EQUAL( (ios_base::boolalpha | ios_base::dec
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| ios_base::fixed), ss.flags() );
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}
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BOOST_CHECK_EQUAL( (ios_base::skipws | ios_base::dec), ss.flags() );
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{
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boost::io::ios_flags_saver ifs( ss, (ios_base::showbase
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| ios_base::internal) );
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BOOST_CHECK_EQUAL( (ios_base::showbase | ios_base::internal),
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ss.flags() );
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ss << setiosflags( ios_base::unitbuf );
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BOOST_CHECK_EQUAL( (ios_base::showbase | ios_base::internal
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| ios_base::unitbuf), ss.flags() );
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}
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BOOST_CHECK_EQUAL( (ios_base::skipws | ios_base::dec), ss.flags() );
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}
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// Unit test for precision saving
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void
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ios_precision_saver_unit_test
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(
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)
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{
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using namespace std;
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stringstream ss;
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BOOST_CHECK_EQUAL( 6, ss.precision() );
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{
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boost::io::ios_precision_saver ips( ss );
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BOOST_CHECK_EQUAL( 6, ss.precision() );
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ss << setprecision( 4 );
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BOOST_CHECK_EQUAL( 4, ss.precision() );
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}
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BOOST_CHECK_EQUAL( 6, ss.precision() );
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{
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boost::io::ios_precision_saver ips( ss, 8 );
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BOOST_CHECK_EQUAL( 8, ss.precision() );
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ss << setprecision( 10 );
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BOOST_CHECK_EQUAL( 10, ss.precision() );
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}
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BOOST_CHECK_EQUAL( 6, ss.precision() );
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}
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// Unit test for width saving
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void
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ios_width_saver_unit_test
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(
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)
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{
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using namespace std;
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stringstream ss;
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BOOST_CHECK_EQUAL( 0, ss.width() );
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{
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boost::io::ios_width_saver iws( ss );
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BOOST_CHECK_EQUAL( 0, ss.width() );
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ss << setw( 4 );
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BOOST_CHECK_EQUAL( 4, ss.width() );
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}
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BOOST_CHECK_EQUAL( 0, ss.width() );
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{
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boost::io::ios_width_saver iws( ss, 8 );
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BOOST_CHECK_EQUAL( 8, ss.width() );
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ss << setw( 10 );
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BOOST_CHECK_EQUAL( 10, ss.width() );
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}
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BOOST_CHECK_EQUAL( 0, ss.width() );
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}
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// Unit test for I/O-state saving
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void
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ios_iostate_saver_unit_test
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(
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)
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{
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using namespace std;
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stringstream ss;
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BOOST_CHECK_EQUAL( ios_base::goodbit, ss.rdstate() );
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BOOST_CHECK( ss.good() );
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{
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boost::io::ios_iostate_saver iis( ss );
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char c;
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BOOST_CHECK_EQUAL( ios_base::goodbit, ss.rdstate() );
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BOOST_CHECK( ss.good() );
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ss >> c;
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BOOST_CHECK_EQUAL( (ios_base::eofbit | ios_base::failbit),
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ss.rdstate() );
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BOOST_CHECK( ss.eof() );
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BOOST_CHECK( ss.fail() );
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BOOST_CHECK( !ss.bad() );
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}
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BOOST_CHECK_EQUAL( ios_base::goodbit, ss.rdstate() );
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BOOST_CHECK( ss.good() );
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{
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boost::io::ios_iostate_saver iis( ss, ios_base::eofbit );
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BOOST_CHECK_EQUAL( ios_base::eofbit, ss.rdstate() );
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BOOST_CHECK( ss.eof() );
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ss.setstate( ios_base::badbit );
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BOOST_CHECK_EQUAL( (ios_base::eofbit | ios_base::badbit),
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ss.rdstate() );
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BOOST_CHECK( ss.eof() );
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BOOST_CHECK( ss.fail() );
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BOOST_CHECK( ss.bad() );
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}
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BOOST_CHECK_EQUAL( ios_base::goodbit, ss.rdstate() );
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BOOST_CHECK( ss.good() );
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}
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// Unit test for exception-flag saving
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void
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ios_exception_saver_unit_test
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(
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)
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{
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using namespace std;
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stringstream ss;
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BOOST_CHECK_EQUAL( ios_base::goodbit, ss.exceptions() );
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{
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boost::io::ios_exception_saver ies( ss );
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BOOST_CHECK_EQUAL( ios_base::goodbit, ss.exceptions() );
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ss.exceptions( ios_base::failbit );
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BOOST_CHECK_EQUAL( ios_base::failbit, ss.exceptions() );
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{
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boost::io::ios_iostate_saver iis( ss );
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ss.exceptions( ios_base::failbit | ios_base::badbit );
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char c;
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#if defined(BOOST_GCC) || (defined(BOOST_CLANG) && defined(BOOST_GNU_STDLIB))
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BOOST_CHECK_THROW( ss >> c, std::exception );
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#else
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BOOST_CHECK_THROW( ss >> c, std::ios_base::failure );
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#endif
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}
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}
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BOOST_CHECK_EQUAL( ios_base::goodbit, ss.exceptions() );
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{
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boost::io::ios_exception_saver ies( ss, ios_base::eofbit );
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BOOST_CHECK_EQUAL( ios_base::eofbit, ss.exceptions() );
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ss.exceptions( ios_base::badbit );
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BOOST_CHECK_EQUAL( ios_base::badbit, ss.exceptions() );
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{
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boost::io::ios_iostate_saver iis( ss );
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char c;
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BOOST_CHECK_NO_THROW( ss >> c );
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}
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}
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BOOST_CHECK_EQUAL( ios_base::goodbit, ss.exceptions() );
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}
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// Unit test for tied-stream saving
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void
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ios_tie_saver_unit_test
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(
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)
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{
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using namespace std;
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BOOST_CHECK( NULL == cout.tie() );
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{
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boost::io::ios_tie_saver its( cout );
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BOOST_CHECK( NULL == cout.tie() );
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cout.tie( &clog );
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BOOST_CHECK_EQUAL( &clog, cout.tie() );
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}
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BOOST_CHECK( NULL == cout.tie() );
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{
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boost::io::ios_tie_saver its( cout, &clog );
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BOOST_CHECK_EQUAL( &clog, cout.tie() );
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cout.tie( &cerr );
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BOOST_CHECK_EQUAL( &cerr, cout.tie() );
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}
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BOOST_CHECK( NULL == cout.tie() );
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}
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// Unit test for connected-streambuf saving
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void
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ios_rdbuf_saver_unit_test
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(
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)
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{
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using namespace std;
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iostream s( NULL );
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BOOST_CHECK( NULL == s.rdbuf() );
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{
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stringbuf sb;
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boost::io::ios_rdbuf_saver irs( s );
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BOOST_CHECK( NULL == s.rdbuf() );
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s.rdbuf( &sb );
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BOOST_CHECK_EQUAL( &sb, s.rdbuf() );
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}
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BOOST_CHECK( NULL == s.rdbuf() );
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{
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stringbuf sb1, sb2( "Hi there" );
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boost::io::ios_rdbuf_saver irs( s, &sb1 );
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BOOST_CHECK_EQUAL( &sb1, s.rdbuf() );
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s.rdbuf( &sb2 );
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BOOST_CHECK_EQUAL( &sb2, s.rdbuf() );
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}
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BOOST_CHECK( NULL == s.rdbuf() );
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}
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// Unit test for fill-character saving
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void
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ios_fill_saver_unit_test
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(
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)
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{
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using namespace std;
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stringstream ss;
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BOOST_CHECK_EQUAL( ' ', ss.fill() );
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{
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boost::io::ios_fill_saver ifs( ss );
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BOOST_CHECK_EQUAL( ' ', ss.fill() );
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ss.fill( 'x' );
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BOOST_CHECK_EQUAL( 'x', ss.fill() );
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}
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BOOST_CHECK_EQUAL( ' ', ss.fill() );
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{
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boost::io::ios_fill_saver ifs( ss, '3' );
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BOOST_CHECK_EQUAL( '3', ss.fill() );
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ss.fill( '+' );
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BOOST_CHECK_EQUAL( '+', ss.fill() );
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}
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BOOST_CHECK_EQUAL( ' ', ss.fill() );
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}
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// Unit test for locale saving
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void
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ios_locale_saver_unit_test
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(
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)
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{
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using namespace std;
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typedef numpunct<char> npc_type;
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stringstream ss;
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BOOST_CHECK( locale() == ss.getloc() );
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// locales are unprintable, so no BOOST_CHECK_EQUAL
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BOOST_CHECK( !has_facet<npc_type>(ss.getloc()) || (NULL
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== dynamic_cast<backward_bool_names const *>(
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&use_facet<npc_type>(ss.getloc()) )) );
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// my implementation of has_facet just checks IDs, but doesn't do dynamic
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// cast (therefore if a specifc facet type is missing, but its base class
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// is available, has_facet will mistakenly[?] match), so I have to do it
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// here. I wanted: "BOOST_CHECK( ! has_facet< backward_bool_names >(
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// ss.getloc() ) )"
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{
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boost::io::ios_locale_saver ils( ss );
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BOOST_CHECK( locale() == ss.getloc() );
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ss.imbue( locale::classic() );
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BOOST_CHECK( locale::classic() == ss.getloc() );
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}
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BOOST_CHECK( locale() == ss.getloc() );
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BOOST_CHECK( !has_facet<npc_type>(ss.getloc()) || (NULL
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== dynamic_cast<backward_bool_names const *>(
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&use_facet<npc_type>(ss.getloc()) )) );
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{
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boost::io::ios_locale_saver ils( ss, locale::classic() );
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BOOST_CHECK( locale::classic() == ss.getloc() );
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BOOST_CHECK( !has_facet<npc_type>(ss.getloc()) || (NULL
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== dynamic_cast<backward_bool_names const *>(
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&use_facet<npc_type>(ss.getloc()) )) );
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ss.imbue( locale(locale::classic(), new backward_bool_names) );
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BOOST_CHECK( locale::classic() != ss.getloc() );
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BOOST_CHECK( has_facet<npc_type>(ss.getloc()) && (NULL
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!= dynamic_cast<backward_bool_names const *>(
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&use_facet<npc_type>(ss.getloc()) )) );
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//BOOST_CHECK( has_facet<backward_bool_names>(ss.getloc()) );
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}
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BOOST_CHECK( locale() == ss.getloc() );
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BOOST_CHECK( !has_facet<npc_type>(ss.getloc()) || (NULL
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== dynamic_cast<backward_bool_names const *>(
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&use_facet<npc_type>(ss.getloc()) )) );
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}
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// Unit test for user-defined integer data saving
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void
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ios_iword_saver_unit_test
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(
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)
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{
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using namespace std;
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stringstream ss;
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BOOST_CHECK_EQUAL( 0, ss.iword(word_index) );
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{
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boost::io::ios_iword_saver iis( ss, word_index );
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BOOST_CHECK_EQUAL( 0, ss.iword(word_index) );
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ss.iword( word_index ) = 6;
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BOOST_CHECK_EQUAL( 6, ss.iword(word_index) );
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}
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BOOST_CHECK_EQUAL( 0, ss.iword(word_index) );
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{
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boost::io::ios_iword_saver iis( ss, word_index, 100 );
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BOOST_CHECK_EQUAL( 100, ss.iword(word_index) );
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ss.iword( word_index ) = -2000;
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BOOST_CHECK_EQUAL( -2000, ss.iword(word_index) );
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}
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BOOST_CHECK_EQUAL( 0, ss.iword(word_index) );
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}
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// Unit test for user-defined pointer data saving
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void
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ios_pword_saver_unit_test
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(
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)
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{
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using namespace std;
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stringstream ss;
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BOOST_CHECK( NULL == ss.pword(word_index) );
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{
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boost::io::ios_pword_saver ips( ss, word_index );
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BOOST_CHECK( NULL == ss.pword(word_index) );
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ss.pword( word_index ) = &ss;
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BOOST_CHECK_EQUAL( &ss, ss.pword(word_index) );
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}
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BOOST_CHECK( NULL == ss.pword(word_index) );
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{
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boost::io::ios_pword_saver ips( ss, word_index, ss.rdbuf() );
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BOOST_CHECK_EQUAL( ss.rdbuf(), ss.pword(word_index) );
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ss.pword( word_index ) = &ss;
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BOOST_CHECK_EQUAL( &ss, ss.pword(word_index) );
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}
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BOOST_CHECK( NULL == ss.pword(word_index) );
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}
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// Unit test for all ios_base data saving
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void
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ios_base_all_saver_unit_test
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(
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)
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{
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using namespace std;
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stringstream ss;
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BOOST_CHECK_EQUAL( (ios_base::skipws | ios_base::dec), ss.flags() );
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BOOST_CHECK_EQUAL( 6, ss.precision() );
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BOOST_CHECK_EQUAL( 0, ss.width() );
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{
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boost::io::ios_base_all_saver ibas( ss );
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BOOST_CHECK_EQUAL( (ios_base::skipws | ios_base::dec), ss.flags() );
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BOOST_CHECK_EQUAL( 6, ss.precision() );
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BOOST_CHECK_EQUAL( 0, ss.width() );
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ss << hex << unitbuf << setprecision( 5 ) << setw( 7 );
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BOOST_CHECK_EQUAL( (ios_base::unitbuf | ios_base::hex
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| ios_base::skipws), ss.flags() );
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BOOST_CHECK_EQUAL( 5, ss.precision() );
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BOOST_CHECK_EQUAL( 7, ss.width() );
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}
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BOOST_CHECK_EQUAL( (ios_base::skipws | ios_base::dec), ss.flags() );
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BOOST_CHECK_EQUAL( 6, ss.precision() );
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BOOST_CHECK_EQUAL( 0, ss.width() );
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}
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// Unit test for all basic_ios data saving
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void
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ios_all_saver_unit_test
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(
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)
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{
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using namespace std;
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typedef numpunct<char> npc_type;
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stringbuf sb;
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iostream ss( &sb );
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BOOST_CHECK_EQUAL( (ios_base::skipws | ios_base::dec), ss.flags() );
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BOOST_CHECK_EQUAL( 6, ss.precision() );
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BOOST_CHECK_EQUAL( 0, ss.width() );
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BOOST_CHECK_EQUAL( ios_base::goodbit, ss.rdstate() );
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BOOST_CHECK( ss.good() );
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BOOST_CHECK_EQUAL( ios_base::goodbit, ss.exceptions() );
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BOOST_CHECK( NULL == ss.tie() );
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BOOST_CHECK( &sb == ss.rdbuf() );
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BOOST_CHECK_EQUAL( ' ', ss.fill() );
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BOOST_CHECK( locale() == ss.getloc() );
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{
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boost::io::ios_all_saver ias( ss );
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BOOST_CHECK_EQUAL( (ios_base::skipws | ios_base::dec), ss.flags() );
|
|
BOOST_CHECK_EQUAL( 6, ss.precision() );
|
|
BOOST_CHECK_EQUAL( 0, ss.width() );
|
|
BOOST_CHECK_EQUAL( ios_base::goodbit, ss.rdstate() );
|
|
BOOST_CHECK( ss.good() );
|
|
BOOST_CHECK_EQUAL( ios_base::goodbit, ss.exceptions() );
|
|
BOOST_CHECK( NULL == ss.tie() );
|
|
BOOST_CHECK( &sb == ss.rdbuf() );
|
|
BOOST_CHECK_EQUAL( ' ', ss.fill() );
|
|
BOOST_CHECK( locale() == ss.getloc() );
|
|
|
|
ss << oct << showpos << noskipws;
|
|
BOOST_CHECK_EQUAL( (ios_base::showpos | ios_base::oct), ss.flags() );
|
|
|
|
ss << setprecision( 3 );
|
|
BOOST_CHECK_EQUAL( 3, ss.precision() );
|
|
|
|
ss << setw( 9 );
|
|
BOOST_CHECK_EQUAL( 9, ss.width() );
|
|
|
|
ss.setstate( ios_base::eofbit );
|
|
BOOST_CHECK_EQUAL( ios_base::eofbit, ss.rdstate() );
|
|
BOOST_CHECK( ss.eof() );
|
|
|
|
ss.exceptions( ios_base::failbit );
|
|
BOOST_CHECK_EQUAL( ios_base::failbit, ss.exceptions() );
|
|
|
|
{
|
|
boost::io::ios_iostate_saver iis( ss );
|
|
ss.exceptions( ios_base::failbit | ios_base::badbit );
|
|
char c;
|
|
|
|
#if defined(BOOST_GCC) || (defined(BOOST_CLANG) && defined(BOOST_GNU_STDLIB))
|
|
BOOST_CHECK_THROW( ss >> c, std::exception );
|
|
#else
|
|
BOOST_CHECK_THROW( ss >> c, std::ios_base::failure );
|
|
#endif
|
|
}
|
|
|
|
ss.tie( &clog );
|
|
BOOST_CHECK_EQUAL( &clog, ss.tie() );
|
|
|
|
ss.rdbuf( cerr.rdbuf() );
|
|
BOOST_CHECK_EQUAL( cerr.rdbuf(), ss.rdbuf() );
|
|
|
|
ss << setfill( 'x' );
|
|
BOOST_CHECK_EQUAL( 'x', ss.fill() );
|
|
|
|
ss.imbue( locale(locale::classic(), new backward_bool_names) );
|
|
BOOST_CHECK( locale() != ss.getloc() );
|
|
BOOST_CHECK( has_facet<npc_type>(ss.getloc()) && (NULL
|
|
!= dynamic_cast<backward_bool_names const *>(
|
|
&use_facet<npc_type>(ss.getloc()) )) );
|
|
}
|
|
|
|
BOOST_CHECK_EQUAL( (ios_base::skipws | ios_base::dec), ss.flags() );
|
|
BOOST_CHECK_EQUAL( 6, ss.precision() );
|
|
BOOST_CHECK_EQUAL( 0, ss.width() );
|
|
BOOST_CHECK_EQUAL( ios_base::goodbit, ss.rdstate() );
|
|
BOOST_CHECK( ss.good() );
|
|
BOOST_CHECK_EQUAL( ios_base::goodbit, ss.exceptions() );
|
|
BOOST_CHECK( NULL == ss.tie() );
|
|
BOOST_CHECK( &sb == ss.rdbuf() );
|
|
BOOST_CHECK_EQUAL( ' ', ss.fill() );
|
|
BOOST_CHECK( locale() == ss.getloc() );
|
|
}
|
|
|
|
// Unit test for user-defined data saving
|
|
void
|
|
ios_word_saver_unit_test
|
|
(
|
|
)
|
|
{
|
|
using namespace std;
|
|
|
|
stringstream ss;
|
|
|
|
BOOST_CHECK_EQUAL( 0, ss.iword(word_index) );
|
|
BOOST_CHECK( NULL == ss.pword(word_index) );
|
|
|
|
{
|
|
boost::io::ios_all_word_saver iaws( ss, word_index );
|
|
|
|
BOOST_CHECK_EQUAL( 0, ss.iword(word_index) );
|
|
BOOST_CHECK( NULL == ss.pword(word_index) );
|
|
|
|
ss.iword( word_index ) = -11;
|
|
ss.pword( word_index ) = ss.rdbuf();
|
|
BOOST_CHECK_EQUAL( -11, ss.iword(word_index) );
|
|
BOOST_CHECK_EQUAL( ss.rdbuf(), ss.pword(word_index) );
|
|
}
|
|
|
|
BOOST_CHECK_EQUAL( 0, ss.iword(word_index) );
|
|
BOOST_CHECK( NULL == ss.pword(word_index) );
|
|
}
|
|
|
|
|
|
// Unit test program
|
|
boost::unit_test::test_suite *
|
|
init_unit_test_suite
|
|
(
|
|
int , // "argc" is unused
|
|
char * [] // "argv" is unused
|
|
)
|
|
{
|
|
boost::unit_test::test_suite * test
|
|
= BOOST_TEST_SUITE( "I/O state saver test" );
|
|
|
|
test->add( BOOST_TEST_CASE(ios_flags_saver_unit_test) );
|
|
test->add( BOOST_TEST_CASE(ios_precision_saver_unit_test) );
|
|
test->add( BOOST_TEST_CASE(ios_width_saver_unit_test) );
|
|
|
|
test->add( BOOST_TEST_CASE(ios_iostate_saver_unit_test) );
|
|
test->add( BOOST_TEST_CASE(ios_exception_saver_unit_test) );
|
|
test->add( BOOST_TEST_CASE(ios_tie_saver_unit_test) );
|
|
test->add( BOOST_TEST_CASE(ios_rdbuf_saver_unit_test) );
|
|
test->add( BOOST_TEST_CASE(ios_fill_saver_unit_test) );
|
|
test->add( BOOST_TEST_CASE(ios_locale_saver_unit_test) );
|
|
|
|
test->add( BOOST_TEST_CASE(ios_iword_saver_unit_test) );
|
|
test->add( BOOST_TEST_CASE(ios_pword_saver_unit_test) );
|
|
|
|
test->add( BOOST_TEST_CASE(ios_base_all_saver_unit_test) );
|
|
test->add( BOOST_TEST_CASE(ios_all_saver_unit_test) );
|
|
test->add( BOOST_TEST_CASE(ios_word_saver_unit_test) );
|
|
|
|
return test;
|
|
}
|