google-auth-library-nodejs/test/test.utils.js

/**
 * Copyright 2014 Google Inc. 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.
 * 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.
 */

'use strict';

var assert = require('assert');
var utils = require('../lib/utils.js');

describe('Utils', function() {

  it('should not extend functions on the prototype', function() {

    var object = {
      property: 'test'
    };

    /* jshint ignore:start */
    Object.prototype.entries = function() {};
    /* jshint ignore:end */

    var newObject = utils.extend({}, object);

    assert.equal('entries' in newObject, true);
    assert.equal(newObject.hasOwnProperty('entries'), false);

    assert.equal('property' in newObject, true);
    assert.equal(newObject.hasOwnProperty('property'), true);

    delete Object.prototype.entries;
  });

});