text: # -*- coding: utf-8 -*-
  #
  # 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.
  import unittest
  
  from airflow import DAG
  from airflow import configuration
  from airflow.sensors.sql_sensor import SqlSensor
  from airflow.utils.timezone import datetime
  
  configuration.load_test_config()
  
  DEFAULT_DATE = datetime(2015, 1, 1)
  TEST_DAG_ID = 'unit_test_sql_dag'
  
  
  class SqlSensorTests(unittest.TestCase):
      def setUp(self):
          configuration.load_test_config()
          args = {
              'owner': 'airflow',
              'start_date': DEFAULT_DATE
          }
          self.dag = DAG(TEST_DAG_ID, default_args=args)
  
      def test_sql_sensor_mysql(self):
          t = SqlSensor(
              task_id='sql_sensor_check',
              conn_id='mysql_default',
              sql="SELECT count(1) FROM INFORMATION_SCHEMA.TABLES",
              dag=self.dag
          )
          t.run(start_date=DEFAULT_DATE, end_date=DEFAULT_DATE, ignore_ti_state=True)
  
      def test_sql_sensor_postgres(self):
          t = SqlSensor(
              task_id='sql_sensor_check',
              conn_id='postgres_default',
              sql="SELECT count(1) FROM INFORMATION_SCHEMA.TABLES",
              dag=self.dag
          )
          t.run(start_date=DEFAULT_DATE, end_date=DEFAULT_DATE, ignore_ti_state=True)
  