def test_fractions_string_representation_is_as_expected_one(self):
fraction1 = Fraction(1, 3)
fraction2 = Fraction(-1, 3)
fraction3 = Fraction(2, 4)
self.assertEqual(str(fraction1), '1/3')
self.assertEqual(str(fraction2), '-1/3')
self.assertEqual(str(fraction3), '2/4')
def test_addition_fractions_works_correct_for_non_simplifiable_result_with_non_equal_denominator(
self):
fraction1 = Fraction(1, 7)
fraction2 = Fraction(2, 6)
result = fraction1 + fraction2
self.assertEqual(result.num, 10)
self.assertEqual(result.denom, 21)
def test_addition_fractions_works_correct_for_non_simplifiable_result(
self):
fraction1 = Fraction(1, 9)
fraction2 = Fraction(1, 3)
result = fraction1 + fraction2
self.assertEqual(result, Fraction(12, 27))
def test_sorting_is_it_sorted(self):
fraction = [(22, 78), (15, 32), (5, 6), (7, 8), (9, 6), (22, 7)]
are_sorted = True
result = Fraction.sort_function(fraction)
for i in range(0, len(result) - 1):
frac1 = fraction[i]
frac2 = fraction[i + 1]
fract1 = Fraction(frac1[0], frac1[1])
fract2 = Fraction(frac2[0], frac2[1])
if fract1 > fract2:
are_sorted = False
self.assertTrue(are_sorted)
def test_cannot_instantiate_fraction_with_zero_denominator(self):
exception = None
try:
Fraction(1, 0)
except AssertionError as exc:
exception = exc
self.assertIsNotNone(exception)
def test_fractions_greater_with_different_factions(self):
fraction1 = Fraction(2, 5)
fraction2 = Fraction(1, 5)
self.assertTrue(fraction1 > fraction2, 'It is not greater ')
def test_fraction_is_simplified_as_expected(self):
fraction = Fraction(10, 50)
expected = Fraction(1, 5)
self.assertEqual(fraction.simplify(), expected)
def test_simplified_fraction_is_preserved_after_simplication(self):
fraction = Fraction(1, 5)
expected = Fraction(1, 5)
self.assertEqual(fraction.simplify(), expected)
def test_fractions_equalization_with_equal_fractions(self):
fraction1 = Fraction(1, 5)
fraction2 = Fraction(1, 5)
self.assertTrue(fraction1 == fraction2, 'Fractions are not equal')