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67 lines
2.1 KiB
67 lines
2.1 KiB
/*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdexcept>
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#include <gtest/gtest.h>
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#include <qxx/rational.hpp>
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typedef q::mpq rational;
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TEST(RationalTest, reduce_test)
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{
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EXPECT_EQ(rational(5), rational(5).reduce(100));
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EXPECT_EQ(rational(0), rational(0).reduce(100));
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EXPECT_EQ(rational(1,3), rational(1/3.0).reduce(100));
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EXPECT_EQ(rational(1,2), rational(1,2).reduce(100));
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EXPECT_EQ(rational(-1,2), rational(-1,2).reduce(100));
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}
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TEST(RationalTest, minus_test)
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{
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EXPECT_EQ(rational(-1,3), -rational(1,3));
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}
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TEST(RationalTest, plus_minus_times_test)
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{
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rational a(47,17);
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rational b(113,98);
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EXPECT_EQ(rational(6527,1666), a+b);
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EXPECT_EQ(rational(2685,1666), a-b);
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EXPECT_EQ(rational(-2685,1666), -a+b);
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EXPECT_EQ(rational(5311,1666), a*b);
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}
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TEST(RationalTest, floor_ceil_frac_test)
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{
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EXPECT_EQ(rational(45,17).floor(), rational(2));
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EXPECT_EQ(rational(45,17).ceil(), rational(3));
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EXPECT_EQ(rational(45,17).frac(), rational(11,17));
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EXPECT_EQ(rational(-45,17).floor(), rational(-3));
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EXPECT_EQ(rational(-45,17).ceil(), rational(-2));
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EXPECT_EQ(rational(-45,17).frac(), rational(6,17));
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EXPECT_EQ(rational(1,2).frac(), rational(1,2));
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EXPECT_EQ(rational(-1,2).frac(), rational(1,2));
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}
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TEST(RationalTest, double_to_rational_test)
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{
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EXPECT_FLOAT_EQ(rational(1/3.0).get_double(), 1/3.0);
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EXPECT_FLOAT_EQ(rational(127/15.0).get_double(), 127/15.0);
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EXPECT_FLOAT_EQ(rational(127/183.0).get_double(), 127/183.0);
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EXPECT_FLOAT_EQ(rational(513/3577.0).get_double(), 513/3577.0);
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}
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