检测Angular 2已完成运行 [英] Detecting that Angular 2 is done running

问题描述

我们使用Selenium WebDriver来自动化基于UI的测试.我们的挑战之一是检测页面何时真正完成加载，而Angular 1在这方面也是一个挑战.我们最终执行了这段代码，专门用于检测Angular 1是否完成:

We use Selenium WebDriver to automate our UI based tests. One of our challenges is to detect when a page is truly done loading, and Angular 1 was a challenge in that regard as well. We ended up executing this piece of code specifically to detect if Angular 1 is done:

if(typeof window.angular !== \"undefined\")
{
  var injector = window.angular.element(\"*[ng-app]\").eq(0).injector();

  if(injector)
  {
    var $rootScope = injector.get(\"$rootScope\");
    var $http = injector.get(\"$http\");

    if($rootScope.$$phase === \"$apply\" || $rootScope.$$phase === \"$digest\" || $http.pendingRequests.length !== 0)
    {
      return false;
    }
  }
}

我们最近测试的应用已切换为使用Angular2.上面的代码段不等待Angular 2完成.有什么建议吗?

The app that we are testing recently switched over to use Angular 2. The code snippet above does not wait for Angular 2 to finish. Any suggestions?

推荐答案

对于Angular 2，您应该等待 :

In case of Angular 2, you should wait for stableness of "testabilities" of all Angular 2 apps:

functions.waitForAllAngular2 = function(callback) {
  try {
    var testabilities = window.getAllAngularTestabilities();
    var count = testabilities.length;
    var decrement = function() {
      count--;
      if (count === 0) {
        callback();
      }
    };
    testabilities.forEach(function(testability) {
      testability.whenStable(decrement);
    });
  } catch (err) {
    callback(err.message);
  }
};

源自量角器源代码.量角器是WebDriverJS javascript硒绑定的包装器；设计用于测试AngularJS应用程序(不仅是，而且最适合).

Taken from Protractor source code. Protractor is a wrapper around WebDriverJS javascript selenium bindings; designed to test AngularJS applications (not only, but best suited for).

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