def test_equals_2(self): self.assertEqual(what_is(123), 'nothing')
def test_equals(self): self.assertEqual(what_is(0), 'nothing')
def test_equals_4(self): self.assertEqual(what_is(42), 'everything')
def test_equals_5(self): self.assertEqual(what_is(42 * 42), 'everything squared')
def test_equals_3(self): self.assertEqual(what_is(-1), 'nothing')