def test_1(self):
"""Check that 1 is not prime."""
self.assertFalse(is_prime(1))
def test_3(self):
"""Check that 3 is prime."""
self.assertTrue(is_prime(3))
def test_11(self):
"""Check that 11 is prime."""
self.assertTrue(is_prime(11))
def test_2(self):
"""Check that 2 is prime."""
self.assertTrue(is_prime(2))