def test_devision_by_zero(self):
exc = None
try:
gcd(3, 0)
except Exception as err:
exc = err
self.assertIsNotNone(str(exc))
self.assertEqual(str(exc), 'Cannot divide by zero')
def sum_of_two_fractions(frac1, frac2):
denominator = gcd(frac1[1], frac2[1])
denominator = (frac1[1] * frac2[1]) // denominator
nominator = (frac1[0] * (denominator // frac1[1]) + frac2[0] * (denominator // frac2[1]))
res = simplify_fraction((nominator, denominator))
if str(res) == 'Cannot divide by zero':
raise ZeroDivisionError('Cannot divide by zero')
else:
return res
def lcm(a, b):
return (a * b) // gcd(a, b)
def test_when_the_number_is_not_imaculate_then_return_the_gcd(self):
expr = (7, 21)
expected_result = 7
self.assertEqual(gcd(expr[0], expr[1]), expected_result)
def test_with_irreducible_fraction(self):
res = gcd(9, 28)
self.assertEqual(res, 1)
def test_with_reducible_fraction(self):
res = gcd(12, 8)
self.assertEqual(res, 4)