def test_insert(self):
l = CoerciveList(lambda i: int(i), ['1', '2', 3, '5'])
l.insert(1, '1')
self.assertEqual(l, [1, 1, 2, 3, 5])
self.assertEqual(l[0], 1)
self.assertEqual(l[1], 1)
self.assertEqual(l[2], 2)
self.assertEqual(l[3], 3)
self.assertEqual(l[4], 5)
