def test_4(self): self.assertEqual(leapyear(2100),True)
def test_3(self): self.assertEqual(leapyear(400),True)
def test_1(self): self.assertEqual(leapyear(5),True)
def test_2(self): self.assertEqual(leapyear(2010),True)
def test_5(self): self.assertEqual(leapyear(2000),True)