new_contents: # -*- coding: utf-8 -*-
  #
  # Copyright 2020 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
  #
  #     https://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 pytest
  
  from google.cloud import bigquery_connection
  
  
  @pytest.fixture(scope="session")
  def project_id():
      return os.environ["PROJECT_ID"]
  
  
  def test_list_connections(project_id):
      client = bigquery_connection.ConnectionServiceClient()
  
      parent = f"projects/{project_id}/locations/US"
      connections = list(client.list_connections(parent=parent))
  
      assert len(connections) >= 0
  
subject: add system tests for mTLS testing (#38)