Selenium + Protractactor：在chrome和Firefox中下载文件

Question

我一直在尝试更新conf.js文件以下载文件，它应该适用于Firefox和chrome（彼此独立）。

我一直在网上遵循指南和答案，（包括但不限于stackoverflow），但对我来说并不完全有效。 Chrome没问题，Firefox是我的麻烦制造者。

在Firefox上，它根本不下载文件，与chrome下载文件不同。

从我的utils方法setBrowserProfile：

const FirefoxProfile = require('firefox-profile');
const path = require('path');
const Deferred = require('../utils/deferred');

const downloadsPath = path.join(__dirname, '../');

exports.setBrowserProfile = () => {
  const defer = new Deferred();

  const multiCapabilities = [
    {
      browserName: 'chrome',
      chromeOptions: {
        args: ['--no-sandbox'],
        prefs: {
          download: {
            prompt_for_download: false,
            directory_upgrade: true,
            default_directory: downloadsPath,
          },
        },
      },
    },
  ];
  const firefoxProfile = new FirefoxProfile();
  firefoxProfile.setPreference('javascript.enabled', false);
  firefoxProfile.setPreference('browser.download.dir', downloadsPath);
  firefoxProfile.setPreference('browser.download.folderList', 2);
  firefoxProfile.setPreference('browser.download.useDownloadDir', true);
  firefoxProfile.setPreference('browser.download.manager.useWindow', false);
  firefoxProfile.setPreference('browser.helperApps.neverAsk.openFile', false);
  firefoxProfile.setPreference('browser.download.manager.alertOnEXEOpen', false);
  firefoxProfile.setPreference('browser.download.manager.showWhenStarting', false);
  firefoxProfile.setPreference('browser.download.manager.focusWhenStarting', false);
  firefoxProfile.setPreference('browser.download.manager.showAlertOnComplete', false);
  firefoxProfile.setPreference('browser.helperApps.neverAsk.saveToDisk', 'application/vnd.openxmlformats-officedocument.wordprocessingml.document');

  firefoxProfile.encoded((encodedProfile) => {
    const capabilities = {
      browserName: 'firefox',
      firefox_profile: encodedProfile,
    };
    multiCapabilities.push(capabilities);
    defer.resolve(multiCapabilities);
  });
  return defer.promise;
};

以及conf.js中的相关信息

exports.config = {
[...]
getMultiCapabilities: profile.setBrowserProfile,
[...]
};

从我的deffered.js方法（转换为ES2015）：

Object.defineProperty(exports, '__esModule', { value: true });
exports.default = undefined;


function _instanceof(left, right) {
  if (right != null && typeof Symbol !== 'undefined' && right[Symbol.hasInstance]) {
    return !!right[Symbol.hasInstance](left);
  } else {
    return left instanceof right;
  }
}

function _classCallCheck(instance, Constructor) {
  if (!_instanceof(instance, Constructor)) {
    throw new TypeError('Cannot call a class as a function');
  }
}

const Deferred = function Deferred() {
  const _this = this;

  _classCallCheck(this, Deferred);

  this.promise = new Promise((resolve, reject) => {
    _this.resolve = resolve;
    _this.reject = reject;
  });
};

module.exports = Deferred;

Answer 1

Chrome尝试这样：

const multiCapabilities = [
                {
                    browserName: 'chrome',
                    'goog:chromeOptions': {
                        w3c: false, // due problems with latest chrome driver
                                    // browser.actions is causing issues: https://github.com/jan-molak/serenity-js/issues/329
                        prefs: {
                            download: {
                                'prompt_for_download': false,
                                'directory_upgrade': true,
                                'default_directory': downloadsPath
                            }
                        }
                    }
                }
            ];