c# - C# で ExpectedConditions.AlertIsPresent を実装する方法

Question

using System;
using OpenQA.Selenium;

namespace MyApplication.Selenium.Tests.Source
{
    public sealed class MyExpectedConditions
    {

        private void ExpectedConditions()
        {
        }

        public static Func<IWebDriver, IAlert> AlertIsPresent()
        {
            return (driver) =>
            {
                try
                {
                    return driver.SwitchTo().Alert();
                }
                catch (NoAlertPresentException)
                {
                    return null;
                }
            };
        }

    }
}

次のように使用できます。

new WebDriverWait(Driver, TimeSpan.FromSeconds(5)) { Message = "Waiting for alert to appear" }.Until(d => MyExpectedConditions.AlertIsPresent());
Driver.SwitchTo().Alert().Accept();