def test_setitem(self):
users = {'username': '******', 'display_name': 'John Doe'}
obj = Traverser(users)
obj.set_to_none = None
self.assertIsNone(obj.set_to_none)
obj.id = 123
self.assertEqual(obj.id, 123)
obj.roles = ['admin', 'any_user']
self.assertEqual(obj.roles(), ['admin', 'any_user'])
def test_no_deepcopy_causes_intended_side_effects(self):
value = {'id': 0}
obj = Traverser(value, deepcopy=False)
obj.id = 1
self.assertEqual(obj(), {'id': 1})
self.assertEqual(value, {'id': 1})
def test_setitem_has_no_side_effects(self):
value = {'username': '******'}
obj = Traverser(value)
obj.id = 1
self.assertEqual(obj(), {'username': '******', 'id': 1})
self.assertEqual(value, {'username': '******'})
