def test_update_with_non_iterable(self):
python_set = set()
with self.assertRaises(TypeError) as python_exc:
python_set.update(None)
ts = TraitSet()
with self.assertRaises(TypeError) as trait_exc:
ts.update(None)
self.assertEqual(
str(trait_exc.exception),
str(python_exc.exception),
)
def test_update_with_nothing(self):
notifier = mock.Mock()
python_set = set()
python_set.update()
ts = TraitSet(notifiers=[notifier])
# when
ts.update()
# then
notifier.assert_not_called()
self.assertEqual(ts, python_set)
def test_update_varargs(self):
ts = TraitSet(notifiers=[self.notification_handler])
ts.update({1, 2}, {3, 4})
self.assertEqual(self.added, {1, 2, 3, 4})
self.assertEqual(self.removed, set())