| from unittest import TestCase, main |
| |
| from common.utils.ordered_weakvalue_dict import OrderedWeakValueDict |
| |
| |
| class O(object): |
| def __init__(self, a): |
| self.a = a |
| |
| |
| class TestOrderedWeakValueDict(TestCase): |
| |
| def test_standard_behavior(self): |
| holder = dict() # a real dict so we can control which object real ref |
| def mk(k): |
| o = O(k) |
| holder[k] = o |
| return o |
| o = OrderedWeakValueDict((k, mk(k)) for k in xrange(10)) |
| self.assertEqual(len(o), 10) |
| self.assertEqual(o[3].a, 3) |
| o[3] = mk(-3) |
| self.assertEqual(o[3].a, -3) |
| del o[3] |
| self.assertEqual(len(o), 9) |
| o[100] = mk(100) |
| self.assertEqual(len(o), 10) |
| self.assertEqual(o.keys(), [0, 1, 2, 4, 5, 6, 7, 8, 9, 100]) |
| |
| # remove a few items from the holder, they should be gone from o too |
| del holder[1] |
| del holder[5] |
| del holder[6] |
| |
| self.assertEqual(o.keys(), [0, 2, 4, 7, 8, 9, 100]) |
| self.assertEqual([v.a for v in o.values()], [0, 2, 4, 7, 8, 9, 100]) |
| |
| |