text: #
  # 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
  
  import boto3
  from airflow.contrib.hooks.aws_glue_catalog_hook import AwsGlueCatalogHook
  from tests.compat import mock
  
  try:
      from moto import mock_glue
  except ImportError:
      mock_glue = None
  
  DB_NAME = 'db'
  TABLE_NAME = 'table'
  TABLE_INPUT = {
      "Name": TABLE_NAME,
      "StorageDescriptor": {
          "Columns": [
              {
                  "Name": "string",
                  "Type": "string",
                  "Comment": "string"
              }
          ],
          "Location": "s3://mybucket/{}/{}".format(DB_NAME, TABLE_NAME),
      }
  }
  
  @unittest.skipIf(mock_glue is None,
                   "Skipping test because moto.mock_glue is not available")
  class TestAwsGlueCatalogHook(unittest.TestCase):
  
      @mock_glue
      def setUp(self):
          self.client = boto3.client('glue', region_name='us-east-1')
          self.hook = AwsGlueCatalogHook(region_name="us-east-1")
  
      @mock_glue
      def test_get_conn_returns_a_boto3_connection(self):
          hook = AwsGlueCatalogHook(region_name="us-east-1")
          self.assertIsNotNone(hook.get_conn())
  
      @mock_glue
      def test_conn_id(self):
          hook = AwsGlueCatalogHook(aws_conn_id='my_aws_conn_id', region_name="us-east-1")
          self.assertEqual(hook.aws_conn_id, 'my_aws_conn_id')
  
      @mock_glue
      def test_region(self):
          hook = AwsGlueCatalogHook(region_name="us-west-2")
          self.assertEqual(hook.region_name, 'us-west-2')
  
      @mock_glue
      @mock.patch.object(AwsGlueCatalogHook, 'get_conn')
      def test_get_partitions_empty(self, mock_get_conn):
          response = set()
          mock_get_conn.get_paginator.paginate.return_value = response
          hook = AwsGlueCatalogHook(region_name="us-east-1")
  
          self.assertEqual(hook.get_partitions('db', 'tbl'), set())
  
      @mock_glue
      @mock.patch.object(AwsGlueCatalogHook, 'get_conn')
      def test_get_partitions(self, mock_get_conn):
          response = [{
              'Partitions': [{
                  'Values': ['2015-01-01']
              }]
          }]
          mock_paginator = mock.Mock()
          mock_paginator.paginate.return_value = response
          mock_conn = mock.Mock()
          mock_conn.get_paginator.return_value = mock_paginator
          mock_get_conn.return_value = mock_conn
          hook = AwsGlueCatalogHook(region_name="us-east-1")
          result = hook.get_partitions('db',
                                       'tbl',
                                       expression='foo=bar',
                                       page_size=2,
                                       max_items=3)
  
          self.assertEqual(result, set([('2015-01-01',)]))
          mock_conn.get_paginator.assert_called_once_with('get_partitions')
          mock_paginator.paginate.assert_called_once_with(DatabaseName='db',
                                                          TableName='tbl',
                                                          Expression='foo=bar',
                                                          PaginationConfig={
                                                              'PageSize': 2,
                                                              'MaxItems': 3})
  
      @mock_glue
      @mock.patch.object(AwsGlueCatalogHook, 'get_partitions')
      def test_check_for_partition(self, mock_get_partitions):
          mock_get_partitions.return_value = set([('2018-01-01',)])
          hook = AwsGlueCatalogHook(region_name="us-east-1")
  
          self.assertTrue(hook.check_for_partition('db', 'tbl', 'expr'))
          mock_get_partitions.assert_called_once_with('db', 'tbl', 'expr', max_items=1)
  
      @mock_glue
      @mock.patch.object(AwsGlueCatalogHook, 'get_partitions')
      def test_check_for_partition_false(self, mock_get_partitions):
          mock_get_partitions.return_value = set()
          hook = AwsGlueCatalogHook(region_name="us-east-1")
  
          self.assertFalse(hook.check_for_partition('db', 'tbl', 'expr'))
  
      @mock_glue
      def test_get_table_exists(self):
          self.client.create_database(
              DatabaseInput={
                  'Name': DB_NAME
              }
          )
          self.client.create_table(
              DatabaseName=DB_NAME,
              TableInput=TABLE_INPUT
          )
  
          result = self.hook.get_table(DB_NAME, TABLE_NAME)
  
          self.assertEqual(result['Name'], TABLE_INPUT['Name'])
          self.assertEqual(result['StorageDescriptor']['Location'],
                           TABLE_INPUT['StorageDescriptor']['Location'])
  
      @mock_glue
      def test_get_table_not_exists(self):
          self.client.create_database(
              DatabaseInput={
                  'Name': DB_NAME
              }
          )
          self.client.create_table(
              DatabaseName=DB_NAME,
              TableInput=TABLE_INPUT
          )
  
          with self.assertRaises(Exception):
              self.hook.get_table(DB_NAME, 'dummy_table')
  
      @mock_glue
      def test_get_table_location(self):
          self.client.create_database(
              DatabaseInput={
                  'Name': DB_NAME
              }
          )
          self.client.create_table(
              DatabaseName=DB_NAME,
              TableInput=TABLE_INPUT
          )
  
          result = self.hook.get_table_location(DB_NAME, TABLE_NAME)
          self.assertEqual(result, TABLE_INPUT['StorageDescriptor']['Location'])
  
  
  if __name__ == '__main__':
      unittest.main()
  