def test_del(self):
d = MongoDict('test')
d.clear()
for i in range(5):
d[i] = i
del d[0]
del d[1]
del d[2]
self.assertEqual(list(d.keys()), list(range(3, 5)))
self.assertEqual(list(d.values()), list(range(3, 5)))
with self.assertRaises(KeyError):
del d[0]
