86 lines
2.9 KiB
C++
86 lines
2.9 KiB
C++
/*
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* Distributed under the Boost Software License, Version 1.0.(See accompanying
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* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
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*
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* See http://www.boost.org/libs/iostreams for documentation.
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* File: libs/iostreams/test/stream_offset_64bit_test.cpp
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* Date: Sun Dec 23 21:11:23 MST 2007
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* Copyright: 2007-2008 CodeRage, LLC
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* Author: Jonathan Turkanis
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* Contact: turkanis at coderage dot com
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*
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* Tests the functions defined in the header "boost/iostreams/positioning.hpp"
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* with large (64-bit) file offsets.
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*/
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#include <cstdio> // fpos_t
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#include <iostream>
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#include <sstream>
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#include <boost/config.hpp> // BOOST_MSVC
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#include <boost/iostreams/detail/ios.hpp>
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#include <boost/iostreams/positioning.hpp>
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#include <boost/test/test_tools.hpp>
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#include <boost/test/unit_test.hpp>
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using namespace std;
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using namespace boost;
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using namespace boost::iostreams;
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using boost::unit_test::test_suite;
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#ifdef BOOST_MSVC
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# pragma warning(disable:4127)
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#endif
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void stream_offset_64bit_test()
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{
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stream_offset large_file = (stream_offset) 100 *
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(stream_offset) 1024 *
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(stream_offset) 1024 *
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(stream_offset) 1024;
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stream_offset first = -large_file - (-large_file) % 10000000;
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stream_offset last = large_file - large_file % 10000000;
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for (stream_offset off = first; off < last; off += 10000000)
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{
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if (off != position_to_offset(offset_to_position(off))) {
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cout << "****************************************\n"
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<< "* sizeof(fpos_t) = " << sizeof(fpos_t) << "\n"
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<< "* sizeof(streamoff) = " << sizeof(streamoff) << "\n"
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<< "* sizeof(stream_offset) = "
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<< sizeof(stream_offset) << "\n"
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<< "****************************************\n";
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stringstream s;
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s << "off != position_to_offset(offset_to_position(off)) "
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"failed for (off >> 32) == 0x"
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<< hex
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<< static_cast<unsigned int>(off >> 32)
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<< " and (off & 0xFFFFFFFF) == 0x"
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<< static_cast<unsigned int>(off & 0xFFFFFFFF)
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<< std::endl;
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BOOST_REQUIRE_MESSAGE(0, s.str().c_str());
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}
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}
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}
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void stream_offset_64bit_test2()
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{
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boost::int64_t val = boost::int64_t(1) << 31;
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std::streampos pos = boost::iostreams::offset_to_position(val);
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pos -= 2;
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BOOST_CHECK_EQUAL(val - 2, boost::iostreams::position_to_offset(pos));
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val = -val;
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pos = boost::iostreams::offset_to_position(val);
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pos += 2;
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BOOST_CHECK_EQUAL(val + 2, boost::iostreams::position_to_offset(pos));
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}
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test_suite* init_unit_test_suite(int, char* [])
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{
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test_suite* test = BOOST_TEST_SUITE("stream_offset 64-bit test");
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test->add(BOOST_TEST_CASE(&stream_offset_64bit_test));
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test->add(BOOST_TEST_CASE(&stream_offset_64bit_test2));
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return test;
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}
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