tools/test/tests.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   9  * This file incorporates work covered by the following license notice:
  10  *
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  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <sal/types.h>
  21 #include <cppunit/TestFixture.h>
  22 #include <cppunit/extensions/HelperMacros.h>
  23 #include <cppunit/plugin/TestPlugIn.h>
  24
  25 #include <rtl/math.hxx>
  26 #include <tools/fract.hxx>
  27
  28 namespace tools
  29 {
  30
  31 class FractionTest : public CppUnit::TestFixture
  32 {
  33 public:
  34     void setUp()
  35     {
  36     }
  37
  38     void tearDown()
  39     {
  40     }
  41
  42     void testFraction()
  43     {
  44         const Fraction aFract(1082130431,1073741824);
  45         CPPUNIT_ASSERT_MESSAGE( "Fraction #1 not approximately equal to 1.007812499068677",
  46                                 rtl::math::approxEqual((double)aFract,1.007812499068677) );
  47
  48         Fraction aFract2( aFract );
  49         aFract2.ReduceInaccurate(8);
  50         CPPUNIT_ASSERT_MESSAGE( "Fraction #2 not 1",
  51                                 aFract2.GetNumerator() == 1 &&
  52                                 aFract2.GetDenominator() == 1 );
  53
  54         Fraction aFract3( 0x7AAAAAAA, 0x35555555 );
  55         CPPUNIT_ASSERT_MESSAGE( "Fraction #3 cancellation wrong",
  56                                 aFract3.GetNumerator() == 0x7AAAAAAA &&
  57                                 aFract3.GetDenominator() == 0x35555555 );
  58         aFract3.ReduceInaccurate(30);
  59         CPPUNIT_ASSERT_MESSAGE( "Fraction #3 ReduceInaccurate errorneously cut precision",
  60                                 aFract3.GetNumerator() == 0x7AAAAAAA &&
  61                                 aFract3.GetDenominator() == 0x35555555 );
  62
  63         aFract3.ReduceInaccurate(29);
  64         CPPUNIT_ASSERT_MESSAGE( "Fraction #3 reduce to 29 bits failed",
  65                                 aFract3.GetNumerator() == 0x3D555555 &&
  66                                 aFract3.GetDenominator() == 0x1AAAAAAA );
  67
  68         aFract3.ReduceInaccurate(9);
  69         CPPUNIT_ASSERT_MESSAGE( "Fraction #3 reduce to 9 bits failed",
  70                                 aFract3.GetNumerator() == 0x0147 &&
  71                                 aFract3.GetDenominator() == 0x008E );
  72
  73         aFract3.ReduceInaccurate(1);
  74         CPPUNIT_ASSERT_MESSAGE( "Fraction #3 reduce to 1 bit failed",
  75                                 aFract3.GetNumerator() == 2 &&
  76                                 aFract3.GetDenominator() == 1 );
  77
  78         aFract3.ReduceInaccurate(0);
  79         CPPUNIT_ASSERT_MESSAGE( "Fraction #3 reduce to 0 bits failed",
  80                                 aFract3.GetNumerator() == 2 &&
  81                                 aFract3.GetDenominator() == 1 );
  82
  83 #if SAL_TYPES_SIZEOFLONG == 8
  84         Fraction aFract4(0x7AAAAAAAAAAAAAAA, 0x3555555555555555);
  85         CPPUNIT_ASSERT_MESSAGE( "Fraction #4 cancellation wrong",
  86                                 aFract4.GetNumerator() == 0x7AAAAAAAAAAAAAAA &&
  87                                 aFract4.GetDenominator() == 0x3555555555555555 );
  88         aFract4.ReduceInaccurate(62);
  89         CPPUNIT_ASSERT_MESSAGE( "Fraction #4 ReduceInaccurate errorneously cut precision",
  90                                 aFract4.GetNumerator() == 0x7AAAAAAAAAAAAAAA &&
  91                                 aFract4.GetDenominator() == 0x3555555555555555 );
  92
  93         aFract4.ReduceInaccurate(61);
  94         CPPUNIT_ASSERT_MESSAGE( "Fraction #4 ReduceInaccurate reduce to 61 bit failed",
  95                                 aFract4.GetNumerator() == 0x3D55555555555555 &&
  96                                 aFract4.GetDenominator() == 0x1AAAAAAAAAAAAAAA );
  97 #endif
  98     }
  99
 100     CPPUNIT_TEST_SUITE(FractionTest);
 101     CPPUNIT_TEST(testFraction);
 102     CPPUNIT_TEST_SUITE_END();
 103 };
 104
 105 // -----------------------------------------------------------------------------
 106 CPPUNIT_TEST_SUITE_REGISTRATION(FractionTest);
 107 } // namespace tools
 108
 109 CPPUNIT_PLUGIN_IMPLEMENT();
 110
 111 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */