text: # Copyright 2016 Google LLC
  #
  # 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 os
  
  import google.auth
  
  EXPECT_PROJECT_ID = os.environ.get("EXPECT_PROJECT_ID")
  
  
  def test_application_default_credentials(verify_refresh):
      credentials, project_id = google.auth.default()
  
      if EXPECT_PROJECT_ID is not None:
          assert project_id is not None
  
      verify_refresh(credentials)
  