ISSUE-38834: Add tests and modify logic

airflow/cli/commands/dag_command.py

@@ -225,18 +225,24 @@ def dag_unpause(args) -> None:
 def set_is_paused(is_paused: bool, args) -> None:
     """Set is_paused for DAG by a given dag_id."""
     should_apply = True
-    dags = [
-        dag
-        for dag in get_dags(args.subdir, dag_id=args.dag_id, use_regex=args.treat_dag_id_as_regex)
-        if is_paused != dag.get_is_paused()
-    ]
+    with create_session() as session:
+        query = select(DagModel)
+
+        if args.treat_dag_id_as_regex:
+            query = query.where(DagModel.dag_id.regexp_match(args.dag_id))
+        else:
+            query = query.where(DagModel.dag_id == args.dag_id)
+
+        query = query.where(DagModel.is_paused != is_paused)
+
+        matched_dags = session.scalars(query).all()
 
-    if not dags:
+    if not matched_dags:
         print(f"No {'un' if is_paused else ''}paused DAGs were found")
         return
 
     if not args.yes and args.treat_dag_id_as_regex:
-        dags_ids = [dag.dag_id for dag in dags]
+        dags_ids = [dag.dag_id for dag in matched_dags]
         question = (
             f"You are about to {'un' if not is_paused else ''}pause {len(dags_ids)} DAGs:\n"
             f"{','.join(dags_ids)}"
@@ -245,17 +251,11 @@ def set_is_paused(is_paused: bool, args) -> None:
         should_apply = ask_yesno(question)
 
     if should_apply:
-        dags_models = [DagModel.get_dagmodel(dag.dag_id) for dag in dags]
-        for dag_model in dags_models:
-            if dag_model is not None:
-                dag_model.set_is_paused(is_paused=is_paused)
+        for dag_model in matched_dags:
+            dag_model.set_is_paused(is_paused=is_paused)
 
         AirflowConsole().print_as(
-            data=[
-                {"dag_id": dag.dag_id, "is_paused": dag.get_is_paused()}
-                for dag in dags_models
-                if dag is not None
-            ],
+            data=[{"dag_id": dag.dag_id, "is_paused": not dag.get_is_paused()} for dag in matched_dags],
             output=args.output,
         )
     else:

tests/cli/commands/test_dag_command.py

@@ -717,10 +717,19 @@ def test_pause_regex_yes(self, mock_yesno):
         mock_yesno.assert_not_called()
         dag_command.dag_unpause(args)
 
-    def test_pause_non_existing_dag_error(self):
+    def test_pause_non_existing_dag_do_not_error(self):
         args = self.parser.parse_args(["dags", "pause", "non_existing_dag"])
-        with pytest.raises(AirflowException):
+        with contextlib.redirect_stdout(StringIO()) as temp_stdout:
             dag_command.dag_pause(args)
+            out = temp_stdout.getvalue().strip().splitlines()[-1]
+        assert out == "No unpaused DAGs were found"
+
+    def test_unpause_non_existing_dag_do_not_error(self):
+        args = self.parser.parse_args(["dags", "unpause", "non_existing_dag"])
+        with contextlib.redirect_stdout(StringIO()) as temp_stdout:
+            dag_command.dag_unpause(args)
+            out = temp_stdout.getvalue().strip().splitlines()[-1]
+        assert out == "No paused DAGs were found"
 
     def test_unpause_already_unpaused_dag_do_not_error(self):
         args = self.parser.parse_args(["dags", "unpause", "example_bash_operator", "--yes"])