def test_owned_dict_setdefault_0_arguments_raises(self):
owner = Owner()
owned_dict = OwnedDict({'a': 1, 'b': 2, 'c': 3})
owned_dict.owner = owner
with self.assertRaisesRegex(TypeError, ('setdefault expected at least'
' 1 argument, got 0')):
owned_dict.setdefault()
def test_owned_dict_setdefault_3_arguments_raises(self):
owner = Owner()
owned_dict = OwnedDict({'a': 1, 'b': 2, 'c': 3})
owned_dict.owner = owner
with self.assertRaisesRegex(TypeError, ('setdefault expected at most 2'
' arguments, got 3')):
owned_dict.setdefault(1, 2, 3)
def test_owned_dict_get_notified_thru_setdefault_no_set(self):
owner = Owner()
owned_dict = OwnedDict({'a': 2, 'b': 3})
owned_dict.owner = owner
owned_dict.setdefault('a', 5)
self.assertEqual(owned_dict, {'a': 2, 'b': 3})
self.assertEqual(owner.add_records, [])
self.assertEqual(owner.del_records, [])
def test_owned_dict_get_notified_thru_setdefault(self):
owner = Owner()
owned_dict = OwnedDict({'a': 2, 'b': 3})
owned_dict.owner = owner
owned_dict.setdefault('c', 20)
self.assertEqual(owned_dict, {'a': 2, 'b': 3, 'c': 20})
self.assertEqual(owner.add_records, [AddRecord(owned_dict, 'c', 20)])
self.assertEqual(owner.del_records, [])
