Angular2 Protractor TypeError : this. flow_.getSchedulingFrame_ 不是函数

Question

尝试使用 Protractor 在 Angular2 应用程序上运行集成测试:

Protractor .conf.js

exports.config = {
  baseUrl: 'http://localhost:3000',
  seleniumAddress: 'http://localhost:4444/wd/hub',
  specs: [
    'src/app/e2e/contact.e2e.js'
  ],
  framework: 'jasmine',
   useAllAngular2AppRoots: true
};

我的测试文件:contact.e2e.js

describe('App', function(){
  it('should render the contact section', function() {
    browser.get('/');
    expect(true).toBe(true);
  });
});

我得到的错误:

Message:
    Failed: this.flow_.getSchedulingFrame_ is not a function
  Stack:
    TypeError: this.flow_.getSchedulingFrame_ is not a function
        at promise.Promise.addCallback_ (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/node_modules/selenium-webdriver/lib/goog/../webdriver/promise.js:651:16)
        at promise.Promise.then (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/node_modules/selenium-webdriver/lib/goog/../webdriver/promise.js:592:15)
        at ManagedPromise.invokeThen_ (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:1193:12)
        at ManagedPromise.resolve_ (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:1147:16)
        at /Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:1083:14
        at Task.Deferred.fulfill (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:1432:7)
        at TaskQueue.onTaskComplete_ (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:2995:26)
        at subQ.once (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:2888:33)
        at TaskQueue.emit (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/node_modules/protractor/node_modules/selenium-webdriver/lib/events.js:64:21)
        at TaskQueue.executeNext_ (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:2882:12)
    From: Task: Run it("should render the contact section") in control flow
        at Object.<anonymous> (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/node_modules/jasminewd2/index.js:79:14)
    From asynchronous test:
    Error
        at Suite.<anonymous> (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/src/app/e2e/contact.e2e.js:11:3)
        at Object.<anonymous> (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/src/app/e2e/contact.e2e.js:10:1)
        at Module._compile (module.js:556:32)
        at Object.Module._extensions..js (module.js:565:10)
        at Module.load (module.js:473:32)
        at tryModuleLoad (module.js:432:12)

我的package.json

    "dependencies": {
        "@angular/common": "~2.2.0",
        "@angular/compiler": "~2.2.0",
        "@angular/compiler-cli": "~2.2.0",
        "@angular/core": "~2.2.0",
        "@angular/forms": "~2.2.0",
        "@angular/http": "~2.2.0",
        "@angular/platform-browser": "~2.2.0",
        "@angular/platform-browser-dynamic": "~2.2.0",
        "@angular/platform-server": "~2.2.0",
        "@angular/router": "~3.2.0",
        "@angular/upgrade": "~2.2.0",
        "@ngtools/webpack": "^1.1.4",
        "angular2-express-engine": "~2.1.0-rc.1",
        "angular2-platform-node": "~2.1.0-rc.1",
        "angular2-universal": "~2.1.0-rc.1",
        "angular2-universal-polyfills": "~2.1.0-rc.1",
        "body-parser": "^1.15.2",
        "bootstrap": "^3.3.7",
        "bootstrap-sass": "^3.3.7",
        "csurf": "^1.9.0",
        "express": "^4.14.0",
        "express-handlebars": "^3.0.0",
        "flexslider": "^2.6.3",
        "font-awesome": "^4.7.0",
        "fs": "0.0.1-security",
        "http-proxy": "^1.15.2",
        "jquery": "^3.1.1",
        "jquery.easing": "^1.4.1",
        "jquery.scrollto": "^2.1.2",
        "js.clone": "0.0.3",
        "methods": "~1.1.2",
        "modern-lru": "^1.0.8",
        "preboot": "~4.5.2",
        "rxjs": "5.0.0-beta.12",
        "scrollspy": "^1.5.0",
        "velocity": "^0.7.2",
        "velocity-animate": "^1.3.1",
        "zone.js": "~0.6.26"
      },
"devDependencies": {
    "@types/body-parser": "0.0.29",
    "@types/chai": "^3.4.34",
    "@types/compression": "0.0.29",
    "@types/cookie-parser": "^1.3.29",
    "@types/express": "^4.0.32",
    "@types/express-serve-static-core": "^4.0.33",
    "@types/hammerjs": "^2.0.32",
    "@types/jasmine": "^2.5.38",
    "@types/mime": "0.0.28",
    "@types/node": "^6.0.38",
    "@types/protractor": "^4.0.0",
    "@types/selenium-webdriver": "^2.53.35",
    "@types/serve-static": "^1.7.27",
    "@types/source-map": "^0.5.0",
    "angular2-template-loader": "^0.4.0",
    "assets-webpack-plugin": "^3.5.0",
    "awesome-typescript-loader": "^2.2.4",
    "chai": "^3.5.0",
    "compression-webpack-plugin": "^0.3.2",
    "cookie-parser": "^1.4.3",
    "css-loader": "^0.26.0",
    "css-to-string-loader": "^0.1.2",
    "extract-text-webpack-plugin": "^2.0.0-beta.4",
    "file-loader": "^0.9.0",
    "html-webpack-plugin": "^2.24.1",
    "image-webpack-loader": "^3.0.0",
    "imports-loader": "^0.6.5",
    "istanbul-instrumenter-loader": "^1.0.0",
    "jasmine": "^2.5.2",
    "jasmine-core": "^2.5.2",
    "jasmine-reporters": "^2.2.0",
    "json-loader": "^0.5.4",
    "karma": "^1.3.0",
    "karma-chrome-launcher": "^2.0.0",
    "karma-cli": "^1.0.1",
    "karma-jasmine": "^1.0.2",
    "karma-jenkins-reporter": "0.0.2",
    "karma-mocha": "^1.2.0",
    "karma-mocha-reporter": "^2.2.0",
    "karma-sourcemap-loader": "^0.3.7",
    "karma-webpack": "^1.8.0",
    "mocha": "^3.1.2",
    "mocha-jenkins-reporter": "^0.3.5",
    "mocha-junit-reporter": "^1.12.1",
    "node-sass": "^3.13.0",
    "nodemon": "^1.10.0",
    "protractor": "^4.0.11",
    "raw-loader": "^0.5.1",
    "resolve-url-loader": "^1.6.0",
    "rimraf": "^2.5.4",
    "sass-loader": "^4.0.2",
    "selenium-webdriver": "^2.47.0",
    "sinon": "^1.17.6",
    "source-map-loader": "^0.1.5",
    "string-replace-loader": "^1.0.5",
    "style-loader": "^0.13.1",
    "to-string-loader": "^1.1.5",
    "ts-helpers": "^1.1.2",
    "ts-node": "^1.3.0",
    "typescript": "2.0.2",
    "url-loader": "^0.5.7",
    "v8-lazy-parse-webpack-plugin": "^0.3.0",
    "webpack": "2.1.0-beta.27",
    "webpack-dev-middleware": "^1.8.4",
    "webpack-dev-server": "2.1.0-beta.11",
    "webpack-merge": "~0.16.0",
    "webpack-s3-plugin": "^0.9.2"
  },

奇怪的是，它只发生在我的 mac 上，当我在我的 jenkins 服务器上通过 docker 运行测试时，它运行良好。帮助将不胜感激。提前致谢。

更新

我的 Protractor 不是全局的，我运行的 Protractor 版本是:版本 4.0.14

Answer 1

有几个问题需要解决:

devDependencies: Protractor 4.0.11 使用 selenium-webdriver 2.53.1。您还拥有 selenium-webdriver 2.47.0 作为项目中的 devDependency，这是不寻常的。

堆栈跟踪:错误 selenium-webdriver/lib/goog/../webdriver/promise.js 是可疑的，因为 /lib/goog/ 在 ^4.0.11 中 Protractor 使用的 selenium-webdriver 节点模块中不存在。我怀疑您使用的是旧版本的 Protractor。

• Protractor 4.0.11 使用 selenium-webdriver 2.53.1 - 没有 lib/goog/
• Protractor 2.5.1 使用 selenium-webdriver 2.47.0 - 有一个文件夹有 lib/goog/
• Protractor 1.8.0 使用 selenium-webdriver 2.44.0 - 确实有一个文件夹 lib/goog/

我会检查您是如何运行 Protractor 的。我认为您是在全局上下文中运行它，应该尝试 protractor --version 进行验证。

将脚本添加到 package.json 也很有帮助

  "scripts": {
    "e2e": "protractor some/path/to/conf.js"
  }

然后使用 npm run e2e 执行此操作。这将确保您在项目中使用项目 node_modules 中的 Protractor 。

更新:

上面的回答，我改了2.47.0确实有路径/lib/goog/。真的是深夜才回答，可能是写错了。这可能是因为我执行了 npm i -S selenium-webdriver@^2.47.0。不知何故你已经声明你想要 ^2.47.0 但是如果你正在收缩包装 2.47.0 那么这将阻止胡萝卜下载最后一个次要版本。

对答案的改进。下面的堆栈跟踪引用了两个不同版本的 selenium-webdriver。作为 Protractor 的一部分的 selenium-webdriver 和一个不同的版本。 Protractor 中没有的 selenium-webdriver 指的是路径 lib/goog/。

at promise.Promise.addCallback_ (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/node_modules/selenium-webdriver/lib/goog/../webdriver/promise.js:651:16)
        at promise.Promise.then (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/node_modules/selenium-webdriver/lib/goog/../webdriver/promise.js:592:15)
        at ManagedPromise.invokeThen_ (/Users/yarivkatz/Development/workspace/bugeez/bugeez-lp-final/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:1193:12)

如上文更新所述，我相信您的 selenium-webdriver 版本中存在某些问题。此外，因为您有两个版本的 selenium-webdriver，所以您正在调用 node_modules/protractor/node_modules/selenium-webdriver 并且以某种方式调用 node_modules/selenium-webdriver/lib/goog/。

请删除 devDependency，将其从 shrinkwrap 中删除，然后重新安装您的依赖项。