docstr: Test that the dag file processor calls the sla miss callback
docstr_tok: ["Test","that","the","dag","file","processor","calls","the","sla","miss","callback"]
code: def test_dag_file_processor_sla_miss_callback(
      self, mock_get_dagbag, create_dummy_dag, get_test_dag
  ):
      """
      Test that the dag file processor calls the sla miss callback
      """
      session = settings.Session()
      sla_callback = MagicMock()
  
      # Create dag with a start of 1 day ago, but a sla of 0, so we'll already have a sla_miss on the books.
      test_start_date = timezone.utcnow() - datetime.timedelta(days=1)
      dag, task = create_dummy_dag(
          dag_id="test_sla_miss",
          task_id="dummy",
          sla_miss_callback=sla_callback,
          default_args={
              "start_date": test_start_date,
              "sla": datetime.timedelta(),
          },
      )
  
      session.merge(
          TaskInstance(
              task=task, execution_date=test_start_date, state="success"
          )
      )
      session.merge(
          SlaMiss(
              task_id="dummy",
              dag_id="test_sla_miss",
              execution_date=test_start_date,
          )
      )
  
      mock_dagbag = mock.Mock()
      mock_dagbag.get_dag.return_value = dag
      mock_get_dagbag.return_value = mock_dagbag
  
      DagFileProcessor.manage_slas(
          dag_folder=dag.fileloc,
          dag_id="test_sla_miss",
          session=session,
      )
  
      assert sla_callback.called
  
imports: from __future__ import annotations
  import datetime
  import os
  from unittest import mock
  from unittest.mock import MagicMock, patch
  from zipfile import ZipFile
  import pytest
  from airflow import PY311, settings
  from airflow.callbacks.callback_requests import TaskCallbackRequest
  from airflow.configuration import TEST_DAGS_FOLDER, conf
  from airflow.dag_processing.manager import DagFileProcessorAgent
  from airflow.dag_processing.processor import DagFileProcessor, DagFileProcessorProcess
  from airflow.models import DagBag, DagModel, SlaMiss, TaskInstance, errors
  from airflow.models.serialized_dag import SerializedDagModel
  from airflow.models.taskinstance import SimpleTaskInstance
  from airflow.operators.empty import EmptyOperator
  from airflow.utils import timezone
  from airflow.utils.session import create_session
  from airflow.utils.state import State
  from airflow.utils.types import DagRunType
  from tests.test_utils.config import conf_vars, env_vars
  from tests.test_utils.db import clear_db_dags, clear_db_import_errors, clear_db_jobs, clear_db_pools, clear_db_runs, clear_db_serialized_dags, clear_db_sla_miss
  from tests.test_utils.mock_executor import MockExecutor
label_desc: Use image node_id 6 for calling the TestDagFileProcessor obj's underlying member method code with example usage: obj.test_dag_file_processor_sla_miss_callback(mock_get_dagbag, create_dummy_dag, get_test_dag) without return types