def test_missing_methods(self):
fn = IndexedBasedFinder()
for method in ('pop', 'update', 'get', 'setdefault'):
with self.assertRaises(NotImplementedError, msg=method):
getattr(fn, method)()
with self.assertRaises(NotImplementedError):
fn['asd'] = 6
def test_isinstance(self):
self.assertIsInstance(IndexedBasedFinder(), dict)