def test_add_none_error_adds_no_error():
w = Worker('test', None, None, None)
payload = {}
error_payload = w.add_error(payload, None)
expected = {}
assert expected == error_payload
def test_add_error():
w = Worker('test', None, None, None)
payload = {}
error_payload = w.add_error(payload, invalid_payload_error)
expected = {'error': {'test': [invalid_payload_error, ]}}
assert expected == error_payload
