code: def test_trigger_dag_for_date(self):
      url_template = "/api/experimental/dags/{}/dag_runs"
      dag_id = "example_bash_operator"
      execution_date = utcnow() + timedelta(hours=1)
      datetime_string = execution_date.isoformat()
  
      # Test correct execution with execution date
      response = self.client.post(
          url_template.format(dag_id),
          data=json.dumps({"execution_date": datetime_string}),
          content_type="application/json",
      )
      self.assert_deprecated(response)
      assert 200 == response.status_code
      assert (
          datetime_string
          == json.loads(response.data.decode("utf-8"))["execution_date"]
      )
  
      dagbag = DagBag()
      dag = dagbag.get_dag(dag_id)
      dag_run = dag.get_dagrun(execution_date)
      assert (
          dag_run
      ), f"Dag Run not found for execution date {execution_date}"
  
      # Test correct execution with execution date and microseconds replaced
      response = self.client.post(
          url_template.format(dag_id),
          data=json.dumps(
              {
                  "execution_date": datetime_string,
                  "replace_microseconds": "true",
              }
          ),
          content_type="application/json",
      )
      assert 200 == response.status_code
      response_execution_date = parse_datetime(
          json.loads(response.data.decode("utf-8"))["execution_date"]
      )
      assert 0 == response_execution_date.microsecond
  
      dagbag = DagBag()
      dag = dagbag.get_dag(dag_id)
      dag_run = dag.get_dagrun(response_execution_date)
      assert (
          dag_run
      ), f"Dag Run not found for execution date {execution_date}"
  
      # Test error for nonexistent dag
      response = self.client.post(
          url_template.format("does_not_exist_dag"),
          data=json.dumps({"execution_date": datetime_string}),
          content_type="application/json",
      )
      assert 404 == response.status_code
  
      # Test error for bad datetime format
      response = self.client.post(
          url_template.format(dag_id),
          data=json.dumps({"execution_date": "not_a_datetime"}),
          content_type="application/json",
      )
      assert 400 == response.status_code
  
imports: from __future__ import annotations
  import json
  import os
  import re
  from datetime import timedelta
  from unittest import mock
  from urllib.parse import quote_plus
  import pytest
  from airflow import settings
  from airflow.api.common.experimental.trigger_dag import trigger_dag
  from airflow.models import DagBag, DagRun, Pool, TaskInstance
  from airflow.models.serialized_dag import SerializedDagModel
  from airflow.settings import Session
  from airflow.utils.timezone import datetime, parse, utcnow
  from airflow.version import version
  from tests.test_utils.db import clear_db_pools
label_desc: Use image node_id 8 for calling the TestApiExperimental obj's underlying member method code with example usage: obj.test_trigger_dag_for_date() without return types