Nightwatch.js:窗口未定义 [英] Nightwatch.js: window is undefined

问题描述

我正在尝试使用Nightwatch测试React应用程序.我正在使用React-Router.

I'm trying to use Nightwatch to test a React application. I'm using React-Router with it.

使用Nightwatch window运行测试时未定义.

When running my test with Nightwatch window is undefined.

React使用以下代码片段测试DOM是否可用:

React uses the following snippet to test if the DOM is available:

var canUseDOM = !!(
  typeof window !== 'undefined' &&
  window.document &&
  window.document.createElement
);

从React.js来源: ExecutionEnvironment. js#L16

From React.js source: ExecutionEnvironment.js#L16

React-Router期望canUseDOM为true，否则抛出 错误.

React-Router expects canUseDOM to be true, otherwise it throws an error.

所以我的测试失败了，因为在运行Nightwatch时未定义window.

So my test fails because window is undefined when running Nightwatch.

硒cdriver是否不应该出现window? 如何使window可用?

Shouldn't window be present with selenium webdriver? How can I make window available?

推荐答案

在Nighwatch.js(更具体地说是selenium-webdriver)中，您无法直接访问客户端的DOM. 您必须使用 execute()函数注入脚本:

From Nighwatch.js (and selenium-webdriver, more specifically) you cannot directly access to the DOM of the client. You must use the execute() function to inject your script :

 this.demoTest = function (browser) {
   browser.execute(function(data) {

     var canUseDOM = !!(
       typeof window !== 'undefined' &&
       window.document &&
       window.document.createElement
     );
     alert('canUseDOM ?' + canUseDOM); 

     return true;
   }, [], null);
 };

API中的更多信息: http://nightwatchjs.org/api#execute

More info in the API : http://nightwatchjs.org/api#execute

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