def test_is_vovel_u(self): self.assertTrue(is_vovel('u'))
def test_is_vovel_u(self): self.assertFalse(is_vovel('b'))
def test_is_vovel_a(self): self.assertTrue(is_vovel('a'))
def test_is_vovel_k(self): self.assertFalse(is_vovel('k'))