o-nikolas commented on code in PR #40285:
URL: https://github.com/apache/airflow/pull/40285#discussion_r1644786444


##########
tests/jobs/test_backfill_job.py:
##########
@@ -694,20 +712,21 @@ def test_backfill_run_rescheduled(self, dag_maker):
         ti.refresh_from_db()
         ti.set_state(State.UP_FOR_RESCHEDULE)
 
-        job = Job(executor=executor)
-        job_runner = BackfillJobRunner(
-            job=job,
-            dag=dag,
-            start_date=DEFAULT_DATE,
-            end_date=DEFAULT_DATE + datetime.timedelta(days=2),
-            rerun_failed_tasks=True,
-        )
-        run_job(job=job, execute_callable=job_runner._execute)
-        ti = TI(task=dag.get_task("test_backfill_run_rescheduled_task-1"), 
run_id=DEFAULT_DAG_RUN_ID)
-        ti.refresh_from_db()
-        assert ti.state == State.SUCCESS
+        for _ in self._mock_executor():

Review Comment:
   This is a neat bit of syntax that is using `_mock_executor()` as a generator 
since it cannot be used as a context manager (i.e. with  `with`) because the 
object that is yielded (the MockExecutor) does not implement `__aexit__` or 
`__aexit__`, you will get an exception if you try.



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