tools/qa/cppunit/test_bigint.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:
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  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 <cppunit/TestFixture.h>
  21 #include <cppunit/extensions/HelperMacros.h>
  22
  23 #include <tools/bigint.hxx>
  24
  25 namespace tools
  26 {
  27
  28 class BigIntTest : public CppUnit::TestFixture
  29 {
  30 public:
  31     void testConstructionFromLongLong();
  32
  33     CPPUNIT_TEST_SUITE(BigIntTest);
  34     CPPUNIT_TEST(testConstructionFromLongLong);
  35     CPPUNIT_TEST_SUITE_END();
  36 };
  37
  38 void BigIntTest::testConstructionFromLongLong()
  39 {
  40     // small positive number
  41     {
  42         BigInt bi(static_cast<sal_Int64>(42));
  43         CPPUNIT_ASSERT(bi.IsSet());
  44         CPPUNIT_ASSERT(!bi.IsZero());
  45         CPPUNIT_ASSERT(!bi.IsNeg());
  46         CPPUNIT_ASSERT(bi.IsLong());
  47         CPPUNIT_ASSERT_EQUAL(static_cast<sal_Int32>(42), static_cast<sal_Int32>(bi));
  48     }
  49
  50     // small negative number
  51     {
  52         BigInt bi(static_cast<sal_Int64>(-42));
  53         CPPUNIT_ASSERT(bi.IsSet());
  54         CPPUNIT_ASSERT(!bi.IsZero());
  55         CPPUNIT_ASSERT(bi.IsNeg());
  56         CPPUNIT_ASSERT(bi.IsLong());
  57         CPPUNIT_ASSERT_EQUAL(static_cast<sal_Int32>(-42), static_cast<sal_Int32>(bi));
  58     }
  59
  60 #if SAL_TYPES_SIZEOFLONG < SAL_TYPES_SIZEOFLONGLONG
  61     // positive number just fitting to long
  62     {
  63         BigInt bi(static_cast<sal_Int64>(std::numeric_limits<long>::max()));
  64         CPPUNIT_ASSERT(bi.IsSet());
  65         CPPUNIT_ASSERT(!bi.IsZero());
  66         CPPUNIT_ASSERT(!bi.IsNeg());
  67         CPPUNIT_ASSERT(bi.IsLong());
  68         CPPUNIT_ASSERT_EQUAL(std::numeric_limits<long>::max(), static_cast<long>(bi));
  69     }
  70
  71     // negative number just fitting to long
  72     {
  73         BigInt bi(static_cast<sal_Int64>(std::numeric_limits<long>::min()));
  74         CPPUNIT_ASSERT(bi.IsSet());
  75         CPPUNIT_ASSERT(!bi.IsZero());
  76         CPPUNIT_ASSERT(bi.IsNeg());
  77         CPPUNIT_ASSERT(bi.IsLong());
  78         CPPUNIT_ASSERT_EQUAL(std::numeric_limits<long>::min(), static_cast<long>(bi));
  79     }
  80
  81     // positive number not fitting to long
  82     {
  83         BigInt bi(static_cast<sal_Int64>(std::numeric_limits<long>::max()) + static_cast<sal_Int64>(1));
  84         CPPUNIT_ASSERT(bi.IsSet());
  85         CPPUNIT_ASSERT(!bi.IsZero());
  86         CPPUNIT_ASSERT(!bi.IsNeg());
  87         CPPUNIT_ASSERT(!bi.IsLong());
  88     }
  89
  90     // negative number not fitting to long
  91     {
  92         BigInt bi(static_cast<sal_Int64>(std::numeric_limits<long>::min()) - static_cast<sal_Int64>(1));
  93         CPPUNIT_ASSERT(bi.IsSet());
  94         CPPUNIT_ASSERT(!bi.IsZero());
  95         CPPUNIT_ASSERT(bi.IsNeg());
  96         CPPUNIT_ASSERT(!bi.IsLong());
  97     }
  98 #endif
  99 }
 100
 101 CPPUNIT_TEST_SUITE_REGISTRATION(BigIntTest);
 102
 103 }
 104
 105 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */