如何添加自定义ExpectedConditions的硒？ [英] How to add custom ExpectedConditions for Selenium?

问题描述

我试图写我自己的硒ExpectedConditions，但我不知道如何添加一个新的。有没有人有一个例子吗？我找不到这个网上的任何教程。

I'm trying to write my own ExpectedConditions for Selenium but I don't know how to add a new one. Does anyone have an example? I can't find any tutorials for this online.

在我目前的情况下，我想等到一个元素存在，是可见的，已启用，并且不具备ATTR咏叹调禁用。我知道这个代码不工作：

In my current case I want to wait until an element exists, is visible, is enabled AND doesn't have the attr "aria-disabled". I know this code doesn't work:

var wait = new WebDriverWait(driver, TimeSpan.FromSeconds(seconds));
return wait.Until<IWebElement>((d) =>
    {
        return ExpectedConditions.ElementExists(locator) 
        && ExpectedConditions.ElementIsVisible 
        &&  d.FindElement(locator).Enabled 
         && !d.FindElement(locator).GetAttribute("aria-disabled")
    }

编辑：有一点额外的信息：我遇到的问题是与jQuery的标签我有一个禁用选项卡上的形式，它会开始填充之前的标签被激活该选项卡上的字段。

A little additional info: the problem I am running into is with jQuery tabs. I have a form on a disabled tab and it will start filling out fields on that tab before the tab becomes active.

推荐答案

这是预期的条件只不过是一个匿名方法的详细使用lambda表达式。这些都成为自.NET 3.0 .NET开发的主食，尤其是与LINQ的释放。由于绝大多数.NET开发人员习惯使用C＃的lambda语法，在.NET的webdriver绑定<$ C $ 。C> ExpectedConditions 实施只有几个方法

An "expected condition" is nothing more than an anonymous method using a lambda expression. These have become a staple of .NET development since .NET 3.0, especially with the release of LINQ. Since the vast majority of .NET developers are comfortable with the C# lambda syntax, the WebDriver .NET bindings' ExpectedConditions implementation only has a few methods.

创建等待像你问的会是这个样子：

Creating a wait like you're asking for would look something like this:

WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(10));
wait.Until<IWebElement>((d) =>
{
    IWebElement element = driver.FindElement(By.Id("myid"));
    if (element.Displayed &&
        element.Enabled &&
        element.GetAttribute("aria-disabled") == null)
    {
        return element;
    }

    return null;
});

如果你没有这个构造有经验，我会建议变得如此。只有可能成为.NET的未来版本中更为普遍。

If you're not experienced with this construct, I would recommend becoming so. It is only likely to become more prevalent in future versions of .NET.

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