new_contents: # -*- coding: utf-8 -*-
  #
  # Licensed 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.contrib.hooks.gcp_dataproc_hook import DataProcHook
  
  try:
      from unittest import mock
  except ImportError:
      try:
          import mock
      except ImportError:
          mock = None
  
  JOB = 'test-job'
  PROJECT_ID = 'test-project-id'
  REGION = 'global'
  TASK_ID = 'test-task-id'
  
  BASE_STRING = 'airflow.contrib.hooks.gcp_api_base_hook.{}'
  DATAPROC_STRING = 'airflow.contrib.hooks.gcp_dataproc_hook.{}'
  
  def mock_init(self, gcp_conn_id, delegate_to=None):
      pass
  
  class DataProcHookTest(unittest.TestCase):
      def setUp(self):
          with mock.patch(BASE_STRING.format('GoogleCloudBaseHook.__init__'),
                          new=mock_init):
              self.dataproc_hook = DataProcHook()
  
      @mock.patch(DATAPROC_STRING.format('_DataProcJob'))
      def test_submit(self, job_mock):
        with mock.patch(DATAPROC_STRING.format('DataProcHook.get_conn', return_value=None)):
          self.dataproc_hook.submit(PROJECT_ID, JOB)
          job_mock.assert_called_once_with(mock.ANY, PROJECT_ID, JOB, REGION)
  
subject: Add unit tests for DataProcHook