ashb commented on a change in pull request #5372: [AIRFLOW-3057] add prev_*_date_success to template context URL: https://github.com/apache/airflow/pull/5372#discussion_r291534625
########## File path: tests/models/test_taskinstance.py ########## @@ -992,3 +994,116 @@ def success_handler(self, context): self.assertEqual(cw.task_state_in_callback, State.RUNNING) ti.refresh_from_db() self.assertEqual(ti.state, State.SUCCESS) + + @staticmethod + def _test_previous_dates_setup(schedule_interval: Union[str, datetime.timedelta, None], + catchup: bool) -> dict: + dag_id = 'test_previous_dates' + dag = models.DAG(dag_id=dag_id, schedule_interval=schedule_interval, catchup=catchup) + task = DummyOperator(task_id='task', dag=dag, start_date=DEFAULT_DATE) + + def get_test_ti(session, execution_date: str, state: str) -> TI: + dag.create_dagrun( + run_id='scheduled__{}'.format(execution_date), + state=state, + execution_date=pendulum.parse(execution_date), + start_date=pendulum.utcnow(), + session=session + ) + ti = TI(task=task, execution_date=pendulum.parse(execution_date)) + ti.set_state(state=State.SUCCESS, session=session) + return ti + + with create_session() as session: # type: Session + + d1_s = '2019-01-01T00:00:00+00:00' + t1_s = get_test_ti(session, d1_s, State.SUCCESS) + + d2_f = '2019-01-02T00:00:00+00:00' + t2_f = get_test_ti(session, d2_f, State.FAILED) + + d3_s = '2019-01-03T00:00:00+00:00' + t3_s = get_test_ti(session, d3_s, State.SUCCESS) + + return { + 'ed1_s': pendulum.parse(d1_s), + 'ed2_f': pendulum.parse(d2_f), + 'ed3_s': pendulum.parse(d3_s), + 'ti1_s': t1_s, + 'ti2_f': t2_f, + 'ti3_s': t3_s, + } + + @parameterized.expand(( + ('cron/catchup', '0 0 * * * ', True), + ('cron/no-catchup', '0 0 * * *', False), + ('no-sched/catchup', None, True), + ('no-sched/no-catchup', None, False), + ('timedelta/catchup', datetime.timedelta(days=1), True), + ('timedelta/no-catchup', datetime.timedelta(days=1), False), + )) + def test_previous_ti(self, _, schedule_interval, catchup) -> None: + + setup_dict = self._test_previous_dates_setup(schedule_interval, catchup) + + self.assertIsNone(setup_dict['ti1_s'].previous_ti) + + self.assertEqual( + setup_dict['ti3_s'].previous_ti.execution_date, + setup_dict['ed2_f'] + ) + + @parameterized.expand(( + ('cron/catchup', '0 0 * * * ', True), + ('cron/no-catchup', '0 0 * * *', False), + ('no-sched/catchup', None, True), + ('no-sched/no-catchup', None, False), + ('timedelta/catchup', datetime.timedelta(days=1), True), + ('timedelta/no-catchup', datetime.timedelta(days=1), False), + )) + def test_previous_ti_success(self, _, schedule_interval, catchup) -> None: + + setup_dict = self._test_previous_dates_setup(schedule_interval, catchup) + + self.assertIsNone(setup_dict['ti1_s'].previous_ti_success) + + self.assertEqual( + setup_dict['ti3_s'].previous_ti_success.execution_date, + setup_dict['ed1_s'] Review comment: Could we do: ```suggestion setup_dict['ti3_s'].execution_date ``` then we wouldn't need to return the dates directly, just the task instances? (It took me longer than I like to admit to work out what the `ed` prefix meant!) ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services