uranusjr commented on a change in pull request #16889:
URL: https://github.com/apache/airflow/pull/16889#discussion_r672062375
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File path: tests/conftest.py
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@@ -424,3 +429,54 @@ def app():
from airflow.www import app
return app.create_app(testing=True)
+
+
[email protected]()
+def clear_db():
+ def _clean_up():
+ db.clear_db_runs()
+ db.clear_db_dags()
+ db.clear_db_serialized_dags()
+ db.clear_db_jobs()
+ db.clear_db_task_fail()
+ db.clear_db_task_reschedule
+
+ _clean_up()
+ yield
+
+
[email protected]
+def dag_maker(request):
+
+ DEFAULT_DATE = timezone.datetime(2016, 1, 1)
+
+ class DagFactory:
+ def __enter__(self):
+ self.dag.__enter__()
+ return self.dag
+
+ def __exit__(self, type, value, traceback):
+ dag = self.dag
+ dag.__exit__(type, value, traceback)
+ if type is None:
+ dag.sync_to_db()
+ dag.clear()
+ self.dag_run = dag.create_dagrun(
+ run_id="test",
+ state=self.kwargs.get('state', State.RUNNING),
+ execution_date=self.kwargs.get('execution_date',
self.kwargs['start_date']),
+ start_date=self.kwargs['start_date'],
+ )
+
+ def __call__(self, dag_id='test_dag', **kwargs):
+ self.kwargs = kwargs
+ if "start_date" not in kwargs:
+ if hasattr(request.module, 'DEFAULT_DATE'):
+ kwargs['start_date'] = getattr(request.module,
'DEFAULT_DATE')
+ else:
+ kwargs['start_date'] = DEFAULT_DATE
+ kwargs = {k: v for k, v in kwargs.items() if k not in ['state',
'execution_date', 'run_type']}
+ self.dag = DAG(dag_id, **kwargs)
+ return self
+
+ return DagFactory()
Review comment:
Setting things on a context manager instance in `__enter__` (but not
cleaned up in `__exit__`) is usually not a good idea since the side effect can
leak out of the manager. But this is only used in tests, so as long as we use
it correctly it’s not a big deal.
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