如何使用类属性use扩展方法

本文关键字：扩展 方法 use 属性 何使用 | 更新日期: 2023-09-27 18:25:27

我有一个硒类

 public class Driver
    {
        public IWebDriver Instance { get; set; }
        public  string baseURL;
        public void Initialize()
        {
            Instance = new FirefoxDriver();
            baseURL = "http://localhost:49730/";
            Instance.Manage().Timeouts().ImplicitlyWait(TimeSpan.FromSeconds(5));
        }
        public void Wait(TimeSpan timespan)
        {
            Thread.Sleep((int)(timespan.TotalSeconds * 1000));
        }
        public void Close()
        {
            Instance.Close();;
        }
    }

我还创建了一个扩展方法，它是一个显式等待

public static class WebDriverExtensionMethods
    public static class WebDriverExtensionMethods
    {
        public static IWebElement WaitAndFindElement(this Driver driver, By by, int timeoutInSeconds)
        {
            if (timeoutInSeconds > 0)
            {
                var wait = new WebDriverWait(driver.Instance, TimeSpan.FromSeconds(timeoutInSeconds));
                return wait.Until(drv => drv.FindElement(by));
            }
            return driver.Instance.FindElement(by);
        }
    }

如何调用具有Driver类属性的方法？我想叫司机。Instance.WaitAndFindElement

如何使用类属性use扩展方法

也许你可以在IWebDriver上写一个扩展，而不是Driver:

public static class WebDriverExtensionMethods
{
    public static IWebElement WaitAndFindElement(this IWebDriver driver, By by, int timeoutInSeconds)
    {
        if (timeoutInSeconds > 0)
        {
            var wait = new WebDriverWait(driver, TimeSpan.FromSeconds(timeoutInSeconds));
            return wait.Until(drv => drv.FindElement(by));
        }
        return driver.FindElement(by);
    }
}

顺便说一句，这样你只能在驱动程序的Instance属性上调用它。否则，您可以在现有扩展名的基础上添加此扩展名。甚至可能提取通用代码：

public static class WebDriverExtensionMethods
{
    private static IWebElement WaitAndFindElementInternal(IWebDriver webDriver, By by, int timeoutInSeconds)
    {
        if (timeoutInSeconds > 0)
        {
            var wait = new WebDriverWait(webDriver, TimeSpan.FromSeconds(timeoutInSeconds));
            return wait.Until(drv => drv.FindElement(by));
        }
        return webDriver.FindElement(by);
    }
    public static IWebElement WaitAndFindElement(this Driver driver, By by, int timeoutInSeconds)
    {
        return WaitAndFindElementInternal(driver.Instance, by, timeoutInSeconds);
    }
    public static IWebElement WaitAndFindElement(this IWebDriver driver, By by, int timeoutInSeconds)
    {
        return WaitAndFindElementInternal(driver, by, timeoutInSeconds);
    }
}

通过这种方式，您可以调用driver.Instance.WaitAndFindElement和driver.WaitAndFindElement。

相关文章：