text: # Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the "License"). You
  # may not use this file except in compliance with the License. A copy of
  # the License is located at
  #
  #     http://aws.amazon.com/apache2.0/
  #
  # or in the "license" file accompanying this file. This file 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 __future__ import absolute_import
  
  import os
  
  import pytest
  
  from sagemaker.rl import RLEstimator
  from test.integration import RESOURCE_PATH
  import local_mode_utils
  
  
  def test_vw_cb_explore(local_instance_type, sagemaker_local_session, docker_image,
                         tmpdir, training_data_supervised, role):
      source_path = os.path.join(RESOURCE_PATH, 'vw')
      estimator = RLEstimator(entry_point="train_cbify.py",
                              source_dir=source_path,
                              role=role,
                              instance_count=1,
                              instance_type=local_instance_type,
                              hyperparameters={"num_arms": 7},
                              sagemaker_session=sagemaker_local_session,
                              output_path='file://{}'.format(tmpdir),
                              image_uri=docker_image)
      estimator.fit(inputs=training_data_supervised)
  
      local_mode_utils.assert_output_files_exist(str(tmpdir), 'output', ['success'])
      local_mode_utils.assert_output_files_exist(str(tmpdir), 'model', ['vw.model'])    
      assert os.path.exists(os.path.join(str(tmpdir), 'model.tar.gz')), 'model file not found'