def test_progress_reported(self, mock_update_task_status):
task_id = 'task_1'
call_context = {'task_id': task_id}
progress_report = {'step': 'step-1'}
envelope = Envelope(routing=['A', 'B'], any=call_context, details=progress_report)
reply = Progress(envelope)
handler = ReplyHandler('')
handler.progress(reply)
# validate task updated
delta = {'progress_report': progress_report}
mock_update_task_status.assert_called_with(task_id, delta)
