text: /**
   * Copyright 2018, Google, Inc.
   * 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.
   */
  
  // [START functions_storage_unit_test]
  const assert = require('assert');
  const uuid = require('uuid');
  const utils = require('@google-cloud/nodejs-repo-tools');
  
  const {helloGCS} = require('..');
  
  beforeEach(utils.stubConsole);
  afterEach(utils.restoreConsole);
  
  it('helloGCS: should print uploaded message', () => {
    // Initialize mocks
    const filename = uuid.v4();
    const event = {
      name: filename,
      resourceState: 'exists',
      metageneration: '1',
    };
  
    // Call tested function and verify its behavior
    helloGCS(event);
    assert.ok(console.log.calledWith(`File ${filename} uploaded.`));
  });
  // [END functions_storage_unit_test]
  
  it('helloGCS: should print metadata updated message', () => {
    // Initialize mocks
    const filename = uuid.v4();
    const event = {
      name: filename,
      resourceState: 'exists',
      metageneration: '2',
    };
  
    // Call tested function and verify its behavior
    helloGCS(event);
    assert.ok(console.log.calledWith(`File ${filename} metadata updated.`));
  });
  
  it('helloGCS: should print deleted message', () => {
    // Initialize mocks
    const filename = uuid.v4();
    const event = {
      name: filename,
      resourceState: 'not_exists',
      metageneration: '3',
    };
  
    // Call tested function and verify its behavior
    helloGCS(event);
    assert.ok(console.log.calledWith(`File ${filename} deleted.`));
  });
  