Angular 找不到元素-量角器的可测试性

config.js：

exports.config = {
  seleniumAddress: 'http://localhost:4444/wd/hub',
  specs: ['todo-spec.js', 'landing-page-spec.js']
};

useAllAngular2AppRoots: true

登录页面：page.spec.js：

describe('homepage', function() {
  it('navigates to the find page when clicking "try now"', function() {
    browser.get('http://localhost:3002');
    element(by.css('button.x-button')).click();
    var x = element(by.css('h2:first-of-type'));
    expect(x.getText()).toEqual("hello world");
  });
});

当我运行配置文件时，它通过todo-spec.js，然后开始执行landing-page.spec.js，在其中加载我的web应用程序，然后失败，出现以下错误：

Failures: 1) VEPO homepage navigates to the find page when clicking "try now"   Message:
    Failed: Error while waiting for Protractor to sync with the page: "Could not find testability for element."   Stack:
    Error: Error while waiting for Protractor to sync with the page: "Could not find testability for element."
        at /usr/local/lib/node_modules/protractor/built/browser.js:269:23
        at ManagedPromise.invokeCallback_ (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:1379:14)
        at TaskQueue.execute_ (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:2913:14)
        at TaskQueue.executeNext_ (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:2896:21)
        at /usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:2775:27
        at /usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:639:7
        at process._tickCallback (node.js:382:9)Error
        at ElementArrayFinder.applyAction_ (/usr/local/lib/node_modules/protractor/built/element.js:397:27)
        at ElementArrayFinder._this.(anonymous function) [as click] (/usr/local/lib/node_modules/protractor/built/element.js:100:30)
        at ElementFinder.(anonymous function) [as click] (/usr/local/lib/node_modules/protractor/built/element.js:728:22)
        at Object.<anonymous> (/Users/Ben/Development/vepo/app/test/landing-page-spec.js:4:43)
        at /usr/local/lib/node_modules/protractor/node_modules/jasminewd2/index.js:94:23
        at new ManagedPromise (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:1082:7)
        at controlFlowExecute (/usr/local/lib/node_modules/protractor/node_modules/jasminewd2/index.js:80:18)
        at TaskQueue.execute_ (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:2913:14)
        at TaskQueue.executeNext_ (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:2896:21)
        at /usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/promise.js:2820:25
    From: Task: Run it("navigates to the find page when clicking "try now"") in control flow
        at Object.<anonymous> (/usr/local/lib/node_modules/protractor/node_modules/jasminewd2/index.js:79:14)
    From asynchronous test: 
    Error
        at Suite.<anonymous> (/Users/Ben/Development/vepo/app/test/landing-page-spec.js:2:3)
        at Object.<anonymous> (/Users/Ben/Development/vepo/app/test/landing-page-spec.js:1:1)
        at Module._compile (module.js:398:26)
        at Object.Module._extensions..js (module.js:405:10)
        at Module.load (module.js:344:32)
        at Function.Module._load (module.js:301:12)

2 specs, 1 failure Finished in 9.143 seconds [21:11:17] I/launcher - 0 instance(s) of WebDriver still running [21:11:17] I/launcher - chrome
#01 failed 1 test(s) [21:11:17] I/launcher - overall: 1 failed spec(s) [21:11:17] E/launcher - Process exited with error code 1

失败：1）VEPO主页在单击“立即试用”消息时导航到查找页面：
失败：等待量角器与页面同步时出错：“找不到元素的可测试性。”堆栈：
错误：等待量角器与页面同步时出错：“找不到元素的可测试性。”
at/usr/local/lib/node_modules/dragrator/build/browser.js:269:23
在ManagedPromise.invokeCallback上（/usr/local/lib/node\u modules/dragrator/node\u modules/selenium webdriver/lib/promise.js:1379:14）
在TaskQueue.execute处（/usr/local/lib/node_modules/dragrator/node_modules/selenium webdriver/lib/promise.js:2913:14）
在TaskQueue.executeNext(/usr/local/lib/node_modules/dragrator/node_modules/selenium webdriver/lib/promise.js:2896:21)
at/usr/local/lib/node_modules/dragrator/node_modules/selenium webdriver/lib/promise.js:2775:27
at/usr/local/lib/node_modules/dragrator/node_modules/selenium webdriver/lib/promise.js:639:7
在进程中。回调（node.js:382:9）错误
位于ElementArrayFinder.applyAction（/usr/local/lib/node\u modules/dragrator/build/element.js:397:27）
在ElementArrayFinder._this.（匿名函数）[as click]（/usr/local/lib/node_modules/dragrator/build/element.js:100:30）
在ElementFinder（匿名函数）[as click]（/usr/local/lib/node\u modules/dragrator/build/element.js:728:22）
反对。（/Users/Ben/Development/vepo/app/test/landing-page-spec.js:4:43）
at/usr/local/lib/node_modules/dragrator/node_modules/jasminewd2/index.js:94:23
在新的ManagedPromise（/usr/local/lib/node_modules/dragrator/node_modules/selenium webdriver/lib/promise.js:1082:7）
在controlFlowExecute（/usr/local/lib/node_modules/dragrator/node_modules/jasminewd2/index.js:80:18）
在TaskQueue.execute处（/usr/local/lib/node_modules/dragrator/node_modules/selenium webdriver/lib/promise.js:2913:14）
在TaskQueue.executeNext(/usr/local/lib/node_modules/dragrator/node_modules/selenium webdriver/lib/promise.js:2896:21)
在/usr/local/lib/node_modules/dragrator/node_modules/selenium webdriver/lib/promise.js:2820:25
From:Task：在控制流中运行它（“单击“立即重试”时导航到查找页面”）
反对。（/usr/local/lib/node_modules/dragrator/node_modules/jasminewd2/index.js:79:14）
从异步测试：
错误
在套房。（/Users/Ben/Development/vepo/app/test/landing-page-spec.js:2:3）
反对。（/Users/Ben/Development/vepo/app/test/landing-page-spec.js:1:1）
在模块处编译（Module.js:398:26）
在Object.Module.\u extensions..js（Module.js:405:10）
在Module.load（Module.js:344:32）
在Function.Module.\u加载（Module.js:301:12）
2个规格，1个故障在9.143秒内完成[21:11:17]I/launcher-0个WebDriver实例仍在运行[21:11:17]I/launcher-chrome
#01未通过1次测试[21:11:17]I/启动器-总体：1次未通过规范[21:11:17]E/启动器-进程退出，错误代码为1

---

错误的原因是什么

您的页面是在Angular 2中构建的吗？在这种情况下，请将以下内容添加到config.js中：

exports.config = {
  seleniumAddress: 'http://localhost:4444/wd/hub',
  specs: ['todo-spec.js', 'landing-page-spec.js']
};

useAllAngular2AppRoots: true

---

浏览器现在将等待加载所有angular2。

添加使用angular2方法：true，
在progrator.conf.js中 这对我很有效