text: /**
   * Copyright 2015-2016, 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.
   */
  
  /* global describe it */
  
  const fs = require('fs');
  
  const chai = require('chai');
  const chaiAsPromised = require('chai-as-promised');
  const assert = require('chai').assert;
  
  chai.use(chaiAsPromised);
  chai.should();
  
  const libManifest = require('../../../lib/manifest');
  
  describe('lib.manifest', () => {
    describe('#validateManifest', () => {
      // We assume lighthouse has tests for the manifest parser, just run some
      // minimal smoke tests here.
      it('returns empty array if manifest ok', () => {
        const manifest = fs.readFileSync('./test/app/manifests/icon-url-with-parameter.json');
        const manifestUrl = 'https://example.com/';
        const documentUrl = 'https://www.example.com/';
        const actual = libManifest.validateManifest(manifest, manifestUrl, documentUrl);
        assert.deepEqual(actual, []);
      });
      it('returns same-origin error if documentUrl does not match', () => {
        const manifest = fs.readFileSync('./test/app/manifests/icon-url-with-parameter.json');
        const manifestUrl = 'https://example.com/';
        const documentUrl = 'https://bar.com/';
        const actual = libManifest.validateManifest(manifest, manifestUrl, documentUrl);
        assert.deepEqual(actual, ['ERROR: start_url must be same-origin as document']);
      });
      it('returns icon error if icon value invalid', () => {
        const manifest = fs.readFileSync('./test/app/manifests/no-icon-array.json');
        const manifestUrl = 'https://example.com/';
        const documentUrl = 'https://bar.com/';
        const actual = libManifest.validateManifest(manifest, manifestUrl, documentUrl);
        assert.deepEqual(actual, ['ERROR: \'icons\' expected to be an array but is not.']);
      });
      it('returns multiple errors if start_url and theme_color invalid', () => {
        const manifest = fs.readFileSync('./test/app/manifests/invalid-theme-color.json');
        const manifestUrl = 'https://example.com/';
        const documentUrl = 'https://bar.com/';
        const actual = libManifest.validateManifest(manifest, manifestUrl, documentUrl);
        assert.deepEqual(actual, [
          'ERROR: start_url must be same-origin as document',
          'ERROR: color parsing failed.'
        ]);
      });
    });
  });
  