在同一个测试规范中运行多个浏览器实例

问题描述

如果我有一个使用页面对象模型的规范，我该如何为同一个规范运行多个浏览器实例?

If I have a single spec that is using page object model, how do I run multiple browser instance for that same spec?

例如我有规范:

it('should run multi browser', function() {
    browser.get('http://example.com/searchPage');

    var b2 = browser.forkNewDriverInstance();
    b2.get('http://example.com/searchPage');

    var b3 = browser.forkNewDriverInstance();
    b3.get('http://example.com/searchPage');

    SearchPage.searchButton.click();
    b2.SearchPage.searchButton.click(); //fails here
    b3.SearchPage.searchButton.click();
});

如何为其他浏览器实例重用 SearchPage 页面对象中声明的变量?

How do I reuse vars declared in the SearchPage page object for the other browser instances?

推荐答案

这是一个非常有趣的问题，在同一测试中使用多个浏览器 或 interaction_spec.js.

This is a really interesting question that is not covered in Using Multiple Browsers in the Same Test or in the interaction_spec.js.

页面对象的问题在于页面对象字段通常使用全局可用的element 或browser 定义，在您的情况下，它们始终指向第一个浏览器实例.但是您基本上需要使用特定浏览器调用 element() :

The problem with page objects is that page object fields are usually defined with a globally available element or browser which in your case would always point to the first browser instance. But you basically need to call element() using a specific browser:

b2.element(by.id('searchInput'));

而不仅仅是:

element(by.id('searchInput'));

仅供参考，element 只是 browser.element 的快捷方式.

FYI, element is just a shortcut for browser.element.

我真的不确定这是否是一个可靠的解决方案并且是否真的有效，但是您可以重新定义 全局 element 这样.将其视为将搜索上下文切换到不同的浏览器实例:

I am really not sure whether this is a reliable solution and would actually work, but you can redefine global element this way. Think about it as switching the search context to different browser instances:

SearchPage.searchButton.click();

global.element = b2.element;
SearchPage.searchButton.click();

global.element = b3.element;
SearchPage.searchButton.click();

global.element = browser.element;

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