ceph/src/boost/libs/iostreams/test/stream_offset_32bit_test.cpp

   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_32bit_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 small (32-bit) file offsets.
  15  */
  16
  17 #include <boost/iostreams/positioning.hpp>
  18 #include <boost/test/test_tools.hpp>
  19 #include <boost/test/unit_test.hpp>
  20 #include <boost/type_traits/is_integral.hpp>
  21
  22 using namespace std;
  23 using namespace boost;
  24 using namespace boost::iostreams;
  25 using boost::unit_test::test_suite;
  26
  27 void stream_offset_32bit_test()
  28 {
  29     stream_offset  small_file = 1000000;
  30     stream_offset  off = -small_file;
  31     streampos      pos = offset_to_position(off);
  32
  33     while (off < small_file)
  34     {
  35         BOOST_CHECK(off == position_to_offset(offset_to_position(off)));
  36         BOOST_CHECK(pos == offset_to_position(position_to_offset(pos)));
  37         off += 20000;
  38         pos += 20000;
  39         BOOST_CHECK(off == position_to_offset(offset_to_position(off)));
  40         BOOST_CHECK(pos == offset_to_position(position_to_offset(pos)));
  41         off -= 10000;
  42         pos -= 10000;
  43     }
  44 }
  45
  46 test_suite* init_unit_test_suite(int, char* [])
  47 {
  48     test_suite* test = BOOST_TEST_SUITE("stream_offset 32-bit test");
  49     test->add(BOOST_TEST_CASE(&stream_offset_32bit_test));
  50     return test;
  51 }