1 /* 2 * Distributed under the Boost Software License, Version 1.0.(See accompanying 3 * file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.) 4 * 5 * See http://www.boost.org/libs/iostreams for documentation. 6 7 * File: libs/iostreams/test/stream_offset_64bit_test.cpp 8 * Date: Sun Dec 23 21:11:23 MST 2007 9 * Copyright: 2007-2008 CodeRage, LLC 10 * Author: Jonathan Turkanis 11 * Contact: turkanis at coderage dot com 12 * 13 * Tests the functions defined in the header "boost/iostreams/positioning.hpp" 14 * with large (64-bit) file offsets. 15 */ 16 17 #include <cstdio> // fpos_t 18 #include <iostream> 19 #include <sstream> 20 #include <boost/config.hpp> // BOOST_MSVC 21 #include <boost/iostreams/detail/ios.hpp> 22 #include <boost/iostreams/positioning.hpp> 23 #include <boost/test/test_tools.hpp> 24 #include <boost/test/unit_test.hpp> 25 26 using namespace std; 27 using namespace boost; 28 using namespace boost::iostreams; 29 using boost::unit_test::test_suite; 30 31 #ifdef BOOST_MSVC 32 # pragma warning(disable:4127) 33 #endif 34 stream_offset_64bit_test()35void stream_offset_64bit_test() 36 { 37 stream_offset large_file = (stream_offset) 100 * 38 (stream_offset) 1024 * 39 (stream_offset) 1024 * 40 (stream_offset) 1024; 41 stream_offset first = -large_file - (-large_file) % 10000000; 42 stream_offset last = large_file - large_file % 10000000; 43 44 for (stream_offset off = first; off < last; off += 10000000) 45 { 46 if (off != position_to_offset(offset_to_position(off))) { 47 cout << "****************************************\n" 48 << "* sizeof(fpos_t) = " << sizeof(fpos_t) << "\n" 49 << "* sizeof(streamoff) = " << sizeof(streamoff) << "\n" 50 << "* sizeof(stream_offset) = " 51 << sizeof(stream_offset) << "\n" 52 << "****************************************\n"; 53 stringstream s; 54 s << "off != position_to_offset(offset_to_position(off)) " 55 "failed for (off >> 32) == 0x" 56 << hex 57 << static_cast<unsigned int>(off >> 32) 58 << " and (off & 0xFFFFFFFF) == 0x" 59 << static_cast<unsigned int>(off & 0xFFFFFFFF) 60 << std::endl; 61 BOOST_REQUIRE_MESSAGE(0, s.str().c_str()); 62 } 63 } 64 } 65 stream_offset_64bit_test2()66void stream_offset_64bit_test2() 67 { 68 boost::int64_t val = boost::int64_t(1) << 31; 69 std::streampos pos = boost::iostreams::offset_to_position(val); 70 pos -= 2; 71 BOOST_CHECK_EQUAL(val - 2, boost::iostreams::position_to_offset(pos)); 72 73 val = -val; 74 pos = boost::iostreams::offset_to_position(val); 75 pos += 2; 76 BOOST_CHECK_EQUAL(val + 2, boost::iostreams::position_to_offset(pos)); 77 } 78 init_unit_test_suite(int,char * [])79test_suite* init_unit_test_suite(int, char* []) 80 { 81 test_suite* test = BOOST_TEST_SUITE("stream_offset 64-bit test"); 82 test->add(BOOST_TEST_CASE(&stream_offset_64bit_test)); 83 test->add(BOOST_TEST_CASE(&stream_offset_64bit_test2)); 84 return test; 85 } 86