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Diffstat (limited to 'tools/qa/cppunit/test_fract.cxx')
| -rw-r--r-- | tools/qa/cppunit/test_fract.cxx | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/tools/qa/cppunit/test_fract.cxx b/tools/qa/cppunit/test_fract.cxx new file mode 100644 index 000000000..1c3b8ad02 --- /dev/null +++ b/tools/qa/cppunit/test_fract.cxx @@ -0,0 +1,107 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <sal/types.h> +#include <cppunit/TestFixture.h> +#include <cppunit/extensions/HelperMacros.h> + +#include <rtl/math.hxx> +#include <tools/fract.hxx> + +namespace tools +{ + +class FractionTest : public CppUnit::TestFixture +{ +public: + + void testFraction() + { + const Fraction aFract(1082130431,1073741824); + CPPUNIT_ASSERT_MESSAGE( "Fraction #1 not approximately equal to 1.007812499068677", + rtl::math::approxEqual(static_cast<double>(aFract),1.007812499068677) ); + + Fraction aFract2( aFract ); + aFract2.ReduceInaccurate(8); + CPPUNIT_ASSERT_EQUAL_MESSAGE( "Fraction #2 not 1", + sal_Int32(1), aFract2.GetNumerator() ); + CPPUNIT_ASSERT_EQUAL_MESSAGE( "Fraction #2 not 1", + sal_Int32(1), aFract2.GetDenominator() ); + + Fraction aFract3( 0x7AAAAAAA, 0x35555555 ); + CPPUNIT_ASSERT_EQUAL_MESSAGE( "Fraction #3 cancellation wrong", + sal_Int32(0x7AAAAAAA), aFract3.GetNumerator() ); + CPPUNIT_ASSERT_EQUAL_MESSAGE( "Fraction #3 cancellation wrong", + sal_Int32(0x35555555), aFract3.GetDenominator() ); + aFract3.ReduceInaccurate(30); + CPPUNIT_ASSERT_EQUAL_MESSAGE( "Fraction #3 ReduceInaccurate erroneously cut precision", + sal_Int32(0x7AAAAAAA), aFract3.GetNumerator() ); + CPPUNIT_ASSERT_EQUAL_MESSAGE( "Fraction #3 ReduceInaccurate erroneously cut precision", + sal_Int32(0x35555555), aFract3.GetDenominator() ); + + aFract3.ReduceInaccurate(29); + CPPUNIT_ASSERT_EQUAL_MESSAGE( "Fraction #3 reduce to 29 bits failed", + sal_Int32(0x3D555555), aFract3.GetNumerator() ); + CPPUNIT_ASSERT_EQUAL_MESSAGE( "Fraction #3 reduce to 29 bits failed", + sal_Int32(0x1AAAAAAA), aFract3.GetDenominator() ); + + aFract3.ReduceInaccurate(9); + CPPUNIT_ASSERT_EQUAL_MESSAGE( "Fraction #3 reduce to 9 bits failed", + sal_Int32(0x0147), aFract3.GetNumerator() ); + CPPUNIT_ASSERT_EQUAL_MESSAGE( "Fraction #3 reduce to 9 bits failed", + sal_Int32(0x008E), aFract3.GetDenominator() ); + + aFract3.ReduceInaccurate(1); + CPPUNIT_ASSERT_EQUAL_MESSAGE( "Fraction #3 reduce to 1 bit failed", + sal_Int32(2), aFract3.GetNumerator() ); + CPPUNIT_ASSERT_EQUAL_MESSAGE( "Fraction #3 reduce to 1 bit failed", + sal_Int32(1), aFract3.GetDenominator() ); + + aFract3.ReduceInaccurate(0); + CPPUNIT_ASSERT_EQUAL_MESSAGE( "Fraction #3 reduce to 0 bits failed", + sal_Int32(2), aFract3.GetNumerator() ); + CPPUNIT_ASSERT_EQUAL_MESSAGE( "Fraction #3 reduce to 0 bits failed", + sal_Int32(1), aFract3.GetDenominator() ); + + } + + void testMinLongDouble() { + Fraction f(double(SAL_MIN_INT32)); + CPPUNIT_ASSERT_EQUAL(SAL_MIN_INT32, f.GetNumerator()); + CPPUNIT_ASSERT_EQUAL(sal_Int32(1), f.GetDenominator()); + } + + void testCreateFromDoubleIn32BitsPlatform() { + // This pass in 64 bits but fail in 32 bits + Fraction f(0.960945); + CPPUNIT_ASSERT_EQUAL(true, f.IsValid()); + } + + CPPUNIT_TEST_SUITE(FractionTest); + CPPUNIT_TEST(testFraction); + CPPUNIT_TEST(testMinLongDouble); + CPPUNIT_TEST(testCreateFromDoubleIn32BitsPlatform); + CPPUNIT_TEST_SUITE_END(); +}; + + +CPPUNIT_TEST_SUITE_REGISTRATION(FractionTest); +} // namespace tools + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |