def test_order(self):
s1 = Stack()
s2 = Stack()
c1 = Card(0, 0)
c2 = Card(0, 1)
c3 = Card(0, 2)
s1 = s1 + c1 + c2 + c3
s2 = s2 + c3 + c2 + c1
self.assertNotEqual(s1, s2)
s2.order()
self.assertEqual(s1, s2)
c4 = Card(1, 0)
c5 = Card(1, 1)
s3 = Stack()
s4 = Stack()
s3 = s3 + c1 + c4 + c5
s4 = s4 + c4 + c1 + c5
self.assertNotEqual(s3, s4)
s4.order()
self.assertTrue(s3.__eq__(s4))
