Python Fraction Examples

Example #1

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

 def test_lt_returns_correct_result(self):
     self.assertTrue(Fraction(1, 4) < Fraction(1, 2))
     self.assertFalse(Fraction(1, 2) < Fraction(1, 4))
     self.assertTrue(Fraction(-1, 2) < 0)
     self.assertFalse(Fraction(1, 2) < 0)
     self.assertTrue(Fraction(-1, 2) < Fraction(-1, 4))
     self.assertFalse(Fraction(1, 2) < Fraction(-1, 2))

Example #2

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

 def test_str_returns_correct_result(self):
     self.assertEqual(self.test_fraction.__str__(), "1/2")
     self.test_fraction = Fraction(-1, 2)
     self.assertEqual(self.test_fraction.__str__(), "-1/2")
     self.test_fraction = Fraction(1, -2)
     self.assertEqual(self.test_fraction.__str__(), "-1/2")
     self.test_fraction = Fraction(-1, -2)
     self.assertEqual(self.test_fraction.__str__(), "1/2")

Example #3

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

 def test_init_works_correct(self):
     self.assertEqual(self.test_fraction.num, 1)
     self.assertEqual(self.test_fraction.den, 2)
     self.test_fraction = Fraction(-1, 2)
     self.assertEqual(self.test_fraction.num, -1)
     self.assertEqual(self.test_fraction.den, 2)
     self.test_fraction = Fraction(-1, -2)
     self.assertEqual(self.test_fraction.num, 1)
     self.assertEqual(self.test_fraction.den, 2)
     self.test_fraction = Fraction(1, -2)
     self.assertEqual(self.test_fraction.num, -1)
     self.assertEqual(self.test_fraction.den, 2)

Example #4

import unittest

from fraction.fraction import Fraction

fraction = Fraction(1, 2)


class TestFractionClass(unittest.TestCase):
    def test_str(self):
        self.assertEqual(str(fraction), "1/2")

    def test_float(self):
        self.assertEqual(float(fraction), 0.5)

Example #5

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

 def test_truediv_raises_zerodivisionerror(self):
     with self.assertRaises(ZeroDivisionError):
         Fraction(1, 2) / 0

Example #6

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

 def test_truediv_returns_correct_result(self):
     self.assertEqual(Fraction(1, 2) / Fraction(3, 4), Fraction(2, 3))

Example #7

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

 def test_mul_returns_correct_result(self):
     self.assertEqual(Fraction(1, 2) * Fraction(3, 4), Fraction(3, 8))
     self.assertEqual(Fraction(3, 4) * Fraction(4, 6), Fraction(1, 2))
     self.assertEqual(Fraction(1, 2) * 0, 0)

Example #8

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

 def test_sub_returns_correct_result(self):
     self.assertEqual(Fraction(1, 2) - Fraction(1, 2), 0)
     self.assertEqual(Fraction(1, 4) - Fraction(1, 2), Fraction(-1, 4))
     self.assertEqual(Fraction(1, 2) - Fraction(1, 4), Fraction(1, 4))
     self.assertEqual(Fraction(1, 2) - 0, Fraction(1, 2))

Example #9

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

 def test_ne_returns_correct_result(self):
     self.assertFalse(Fraction(1, 2) != Fraction(1, 2))
     self.assertTrue(Fraction(1, 2) != Fraction(3, 4))
     self.assertTrue(Fraction(1, 2) != 0)
     self.assertFalse(Fraction(-1, 2) != Fraction(-1, 2))
     self.assertTrue(Fraction(-1, 2) != Fraction(1, 2))

Example #10

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

 def test_iadd_returns_correct_result(self):
     self.test_fraction += Fraction(2, 5)
     self.assertEqual(self.test_fraction, Fraction(9, 10))

Example #11

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

 def test_radd_returns_correct_result(self):
     self.assertEqual(0 + Fraction(1, 2), Fraction(1, 2))

Example #12

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

 def test_add_returns_correct_result(self):
     self.assertEqual(Fraction(1, 2) + Fraction(2, 5), Fraction(9, 10))
     self.assertEqual(Fraction(1, 2) + Fraction(1, 4), Fraction(3, 4))
     self.assertEqual(Fraction(1, 2) + 0, Fraction(1, 2))
     self.assertEqual(Fraction(-1, 2) + Fraction(1, 2), 0)
     self.assertEqual(Fraction(-1, 4) + Fraction(-1, 4), Fraction(-1, 2))

Example #13

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

 def test_repr_returns_correct_result(self):
     self.assertEqual(Fraction(1, 2).__repr__(), "Fraction(1, 2)")
     self.assertEqual(Fraction(-1, 2).__repr__(), "Fraction(-1, 2)")
     self.assertEqual(Fraction(1, -2).__repr__(), "Fraction(-1, 2)")

Example #14

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

 def test_get_den_returns_correct_value(self):
     self.assertEqual(Fraction(1, 2).get_den(), 2)

Example #15

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

 def setUp(self):
     self.test_fraction = Fraction(1, 2)

Example #16

File: fraction_test.py Project: lancelote/problem_solving_with_algorithms_and_data_structures

class FractionTest(unittest.TestCase):
    def setUp(self):
        self.test_fraction = Fraction(1, 2)

    def test_init_works_correct(self):
        self.assertEqual(self.test_fraction.num, 1)
        self.assertEqual(self.test_fraction.den, 2)
        self.test_fraction = Fraction(-1, 2)
        self.assertEqual(self.test_fraction.num, -1)
        self.assertEqual(self.test_fraction.den, 2)
        self.test_fraction = Fraction(-1, -2)
        self.assertEqual(self.test_fraction.num, 1)
        self.assertEqual(self.test_fraction.den, 2)
        self.test_fraction = Fraction(1, -2)
        self.assertEqual(self.test_fraction.num, -1)
        self.assertEqual(self.test_fraction.den, 2)

    def test_init_raises_typeerror_if_not_int(self):
        self.assertRaises(TypeError, Fraction, "Hello", "World")

    def test_init_raise_valueerror_if_den_or_num_is_zero(self):
        self.assertRaises(ValueError, Fraction, 0, 1)
        self.assertRaises(ValueError, Fraction, 1, 0)

    def test_str_returns_correct_result(self):
        self.assertEqual(self.test_fraction.__str__(), "1/2")
        self.test_fraction = Fraction(-1, 2)
        self.assertEqual(self.test_fraction.__str__(), "-1/2")
        self.test_fraction = Fraction(1, -2)
        self.assertEqual(self.test_fraction.__str__(), "-1/2")
        self.test_fraction = Fraction(-1, -2)
        self.assertEqual(self.test_fraction.__str__(), "1/2")

    def test_repr_returns_correct_result(self):
        self.assertEqual(Fraction(1, 2).__repr__(), "Fraction(1, 2)")
        self.assertEqual(Fraction(-1, 2).__repr__(), "Fraction(-1, 2)")
        self.assertEqual(Fraction(1, -2).__repr__(), "Fraction(-1, 2)")

    def test_add_returns_correct_result(self):
        self.assertEqual(Fraction(1, 2) + Fraction(2, 5), Fraction(9, 10))
        self.assertEqual(Fraction(1, 2) + Fraction(1, 4), Fraction(3, 4))
        self.assertEqual(Fraction(1, 2) + 0, Fraction(1, 2))
        self.assertEqual(Fraction(-1, 2) + Fraction(1, 2), 0)
        self.assertEqual(Fraction(-1, 4) + Fraction(-1, 4), Fraction(-1, 2))

    def test_radd_returns_correct_result(self):
        self.assertEqual(0 + Fraction(1, 2), Fraction(1, 2))

    def test_radd_raises_notimplementederror(self):
        self.assertRaises(NotImplementedError, self.test_fraction.__radd__, 1)

    def test_iadd_returns_correct_result(self):
        self.test_fraction += Fraction(2, 5)
        self.assertEqual(self.test_fraction, Fraction(9, 10))

    def test_eq_returns_correct_result(self):
        self.assertTrue(Fraction(1, 2) == Fraction(1, 2))
        self.assertFalse(Fraction(1, 2) == Fraction(3, 4))
        self.assertFalse(Fraction(1, 2) == 0)
        self.assertTrue(Fraction(-1, 2) == Fraction(-1, 2))
        self.assertFalse(Fraction(-1, 2) == Fraction(1, 2))

    def test_ne_returns_correct_result(self):
        self.assertFalse(Fraction(1, 2) != Fraction(1, 2))
        self.assertTrue(Fraction(1, 2) != Fraction(3, 4))
        self.assertTrue(Fraction(1, 2) != 0)
        self.assertFalse(Fraction(-1, 2) != Fraction(-1, 2))
        self.assertTrue(Fraction(-1, 2) != Fraction(1, 2))

    def test_sub_returns_correct_result(self):
        self.assertEqual(Fraction(1, 2) - Fraction(1, 2), 0)
        self.assertEqual(Fraction(1, 4) - Fraction(1, 2), Fraction(-1, 4))
        self.assertEqual(Fraction(1, 2) - Fraction(1, 4), Fraction(1, 4))
        self.assertEqual(Fraction(1, 2) - 0, Fraction(1, 2))

    def test_mul_returns_correct_result(self):
        self.assertEqual(Fraction(1, 2) * Fraction(3, 4), Fraction(3, 8))
        self.assertEqual(Fraction(3, 4) * Fraction(4, 6), Fraction(1, 2))
        self.assertEqual(Fraction(1, 2) * 0, 0)

    def test_truediv_returns_correct_result(self):
        self.assertEqual(Fraction(1, 2) / Fraction(3, 4), Fraction(2, 3))

    def test_truediv_raises_zerodivisionerror(self):
        with self.assertRaises(ZeroDivisionError):
            Fraction(1, 2) / 0

    def test_lt_returns_correct_result(self):
        self.assertTrue(Fraction(1, 4) < Fraction(1, 2))
        self.assertFalse(Fraction(1, 2) < Fraction(1, 4))
        self.assertTrue(Fraction(-1, 2) < 0)
        self.assertFalse(Fraction(1, 2) < 0)
        self.assertTrue(Fraction(-1, 2) < Fraction(-1, 4))
        self.assertFalse(Fraction(1, 2) < Fraction(-1, 2))

    def test_le_returns_correct_result(self):
        self.assertTrue(Fraction(1, 2) <= Fraction(1, 2))
        self.assertTrue(Fraction(1, 4) <= Fraction(1, 2))
        self.assertFalse(Fraction(1, 2) <= Fraction(1, 4))
        self.assertTrue(Fraction(-1, 2) <= Fraction(-1, 2))

    def test_gt_returns_correct_result(self):
        self.assertTrue(Fraction(1, 2) > Fraction(1, 4))
        self.assertFalse(Fraction(1, 4) > Fraction(1, 2))
        self.assertTrue(Fraction(1, 2) > 0)
        self.assertFalse(Fraction(-1, 2) > 0)
        self.assertTrue(Fraction(-1, 4) > Fraction(-1, 2))
        self.assertFalse(Fraction(-1, 2) > Fraction(1, 2))

    def test_ge_returns_correct_result(self):
        self.assertTrue(Fraction(1, 2) >= Fraction(1, 2))
        self.assertTrue(Fraction(1, 2) >= Fraction(1, 4))
        self.assertFalse(Fraction(1, 4) >= Fraction(1, 2))
        self.assertFalse(Fraction(-1, 2) >= 0)
        self.assertTrue(Fraction(-1, 4) >= Fraction(-1, 2))
        self.assertTrue(Fraction(1, 2) >= Fraction(-1, 2))

    def test_get_num_returns_correct_value(self):
        self.assertEqual(Fraction(1, 2).get_num(), 1)

    def test_get_den_returns_correct_value(self):
        self.assertEqual(Fraction(1, 2).get_den(), 2)