def test_remove_element(self):
array = Array([1, 2, 3])
array.remove_element(2)
self.assertEqual(array.find(2), -1)
def test_remove_last(self):
array = Array([1, 2, 3])
array.remove_last()
self.assertEqual(array.find(3), -1)
def test_contains_and_find(self):
array = Array([1, 2, 3])
self.assertTrue(array.contains(3))
self.assertFalse(array.contains(6))
self.assertEqual(array.find(2), 1)
self.assertEqual(array.find(6), -1)