def test_lower(self): assert pgcd(30, 42) == 6
def test_upper(self): assert pgcd(42, 30) == 6
def test_upper(self): self.assertEqual(pgcd(42, 30), 6)
def test_lower(self): self.assertEqual(pgcd(30, 42), 6)
def test_upper(): # broken test on purpose assert pgcd(42, 30) == 7