tests/utils/test_types.py

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from airflow.models import DAG
from airflow.models.dagrun import DagRun
from airflow.utils.session import create_session
from airflow.utils.state import State
from airflow.utils.types import DagRunType
from tests.models import DEFAULT_DATE


def test_runtype_enum_escape():
    """
    Make sure DagRunType.SCHEDULE is converted to string 'scheduled' when
    referenced in DB query
    """
    with create_session() as session:
        dag = DAG(dag_id='test_enum_dags', start_date=DEFAULT_DATE)
        dag.create_dagrun(
            run_type=DagRunType.SCHEDULED,
            state=State.RUNNING,
            execution_date=DEFAULT_DATE,
            start_date=DEFAULT_DATE,
            session=session,
        )

        query = session.query(DagRun.dag_id, DagRun.state, DagRun.run_type,).filter(
            DagRun.dag_id == dag.dag_id,
            # make sure enum value can be used in filter queries
            DagRun.run_type == DagRunType.SCHEDULED,
        )
        assert str(query.statement.compile(compile_kwargs={"literal_binds": True})) == (
            'SELECT dag_run.dag_id, dag_run.state, dag_run.run_type \n'
            'FROM dag_run \n'
            "WHERE dag_run.dag_id = 'test_enum_dags' AND dag_run.run_type = 'scheduled'"
        )

        rows = query.all()
        assert len(rows) == 1
        assert rows[0].dag_id == dag.dag_id
        assert rows[0].state == State.RUNNING
        # make sure value in db is stored as `scheduled`, not `DagRunType.SCHEDULED`
        assert rows[0].run_type == 'scheduled'

        session.rollback()