tools/qa/cppunit/test_bigint.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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 class BigIntTest : public CppUnit::TestFixture
  28 {
  29 public:
  30     void testConstructionFromLongLong();
  31
  32     CPPUNIT_TEST_SUITE(BigIntTest);
  33     CPPUNIT_TEST(testConstructionFromLongLong);
  34     CPPUNIT_TEST_SUITE_END();
  35 };
  36
  37 void BigIntTest::testConstructionFromLongLong()
  38 {
  39     // small positive number
  40     {
  41         BigInt bi(static_cast<sal_Int64>(42));
  42         CPPUNIT_ASSERT(!bi.IsZero());
  43         CPPUNIT_ASSERT(!bi.IsNeg());
  44         CPPUNIT_ASSERT(bi.IsLong());
  45         CPPUNIT_ASSERT_EQUAL(static_cast<sal_Int32>(42), static_cast<sal_Int32>(bi));
  46     }
  47
  48     // small negative number
  49     {
  50         BigInt bi(static_cast<sal_Int64>(-42));
  51         CPPUNIT_ASSERT(!bi.IsZero());
  52         CPPUNIT_ASSERT(bi.IsNeg());
  53         CPPUNIT_ASSERT(bi.IsLong());
  54         CPPUNIT_ASSERT_EQUAL(static_cast<sal_Int32>(-42), static_cast<sal_Int32>(bi));
  55     }
  56
  57 #if SAL_TYPES_SIZEOFLONG < SAL_TYPES_SIZEOFLONGLONG
  58     // positive number just fitting to sal_Int32
  59     {
  60         BigInt bi(static_cast<sal_Int64>(std::numeric_limits<sal_Int32>::max()));
  61         CPPUNIT_ASSERT(!bi.IsZero());
  62         CPPUNIT_ASSERT(!bi.IsNeg());
  63         CPPUNIT_ASSERT(bi.IsLong());
  64         CPPUNIT_ASSERT_EQUAL(std::numeric_limits<sal_Int32>::max(), static_cast<sal_Int32>(bi));
  65     }
  66
  67     // negative number just fitting to sal_Int32
  68     {
  69         BigInt bi(static_cast<sal_Int64>(std::numeric_limits<sal_Int32>::min()));
  70         CPPUNIT_ASSERT(!bi.IsZero());
  71         CPPUNIT_ASSERT(bi.IsNeg());
  72         CPPUNIT_ASSERT(bi.IsLong());
  73         CPPUNIT_ASSERT_EQUAL(std::numeric_limits<sal_Int32>::min(), static_cast<sal_Int32>(bi));
  74     }
  75
  76     // positive number not fitting to sal_Int32
  77     {
  78         BigInt bi(static_cast<sal_Int64>(std::numeric_limits<sal_Int32>::max()) + 1);
  79         CPPUNIT_ASSERT(!bi.IsZero());
  80         CPPUNIT_ASSERT(!bi.IsNeg());
  81         CPPUNIT_ASSERT(!bi.IsLong());
  82     }
  83
  84     // negative number not fitting to sal_Int32
  85     {
  86         BigInt bi(static_cast<sal_Int64>(std::numeric_limits<sal_Int32>::min()) - 1);
  87         CPPUNIT_ASSERT(!bi.IsZero());
  88         CPPUNIT_ASSERT(bi.IsNeg());
  89         CPPUNIT_ASSERT(!bi.IsLong());
  90     }
  91 #endif
  92 }
  93
  94 CPPUNIT_TEST_SUITE_REGISTRATION(BigIntTest);
  95 }
  96
  97 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */