def test_push_many(self):
s = Stack()
for i in range(randint(2, 100)):
s.push(i)
self.assertEqual(s.size, i + 1)
self.assertFalse(s.is_empty())
self.assertEqual(s.top(), i)
def test_push_one(self):
s = Stack()
s.push(3)
self.assertEqual(s.size, 1)
self.assertFalse(s.is_empty())
self.assertEqual(s.top(), 3)