old_contents: #
  # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you under the Apache License, Version 2.0 (the
  # "License"); you may not use this file except in compliance
  # with the License.  You may obtain a copy of the License at
  #
  #   http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing,
  # software distributed under the License is distributed on an
  # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied.  See the License for the
  # specific language governing permissions and limitations
  # under the License.
  from airflow.models import DAG
  from airflow.utils.dates import days_ago
  
  args = {'owner': 'airflow', 'retries': 3, 'start_date': days_ago(2)}
  
  tree_dag = DAG(
      dag_id='test_tree_view',
      default_args=args,
      schedule_interval='0 0 * * *',
      default_view='tree',
  )
  
  graph_dag = DAG(
      dag_id='test_graph_view',
      default_args=args,
      schedule_interval='0 0 * * *',
      default_view='graph',
  )
  
new_contents: #
  # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you under the Apache License, Version 2.0 (the
  # "License"); you may not use this file except in compliance
  # with the License.  You may obtain a copy of the License at
  #
  #   http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing,
  # software distributed under the License is distributed on an
  # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied.  See the License for the
  # specific language governing permissions and limitations
  # under the License.
  from airflow.models import DAG
  from airflow.utils.dates import days_ago
  
  args = {'owner': 'airflow', 'retries': 3, 'start_date': days_ago(2)}
  
  tree_dag = DAG(
      dag_id='test_tree_view',
      default_args=args,
      schedule_interval='0 0 * * *',
      default_view='grid',
  )
  
  graph_dag = DAG(
      dag_id='test_graph_view',
      default_args=args,
      schedule_interval='0 0 * * *',
      default_view='graph',
  )
  
subject: fix deprecation warning in test_default_views.py (#22346)