def test_clear(self):
td = TraitDict({"a": 1, "b": 2}, key_validator=str_validator,
value_validator=int_validator,
notifiers=[self.notification_handler])
td.clear()
self.assertEqual(self.added, {})
self.assertEqual(self.changed, {})
self.assertEqual(self.removed, {"a": 1, "b": 2})
def test_clear_empty_dictionary(self):
# Clearing an empty dictionary should not notify.
td = TraitDict(
{},
key_validator=str_validator,
value_validator=int_validator,
notifiers=[self.notification_handler],
)
td.clear()
self.assertIsNone(self.added)
self.assertIsNone(self.changed)
self.assertIsNone(self.removed)