我已经尝试了一段时间，在我们的构建机器上使用IE 11进行selenium测试。我们的构建机器使用IE11运行Windows 10，我们使用TFS 2018.构建代理配置为使用自动登录交互运行。我的测试使用IE，Chrome和Firefox在我的本地计算机上运行。 Chrome和Firefox也适用于构建机器，只是IE我无法上班。我已根据以下文档添加了注册表项并检查了所有其他设置：
https://github.com/SeleniumHQ/selenium/wiki/InternetExplorerDriver
我正在进行的测试只是一个基本样本。
[TestClass]
public class MySeleniumTests
{
private TestContext testContextInstance;
private IWebDriver driver;
private string appURL;
public MySeleniumTests()
{
}
[TestMethod]
[TestCategory("Chrome")]
public void TheBingSearchTest()
{
driver.Navigate().GoToUrl(appURL);
driver.FindElement(By.Id("sb_form_q")).SendKeys("VSTS");
driver.FindElement(By.Id("sb_form_go")).Click();
driver.FindElement(By.XPath("(//ol[@id='b_results']/li/h2/a/strong)[3]")).Click();
Assert.IsTrue(driver.Title.Contains("VSTS"), "Verified title of the page");
}
/// <summary>
///Gets or sets the test context which provides
///information about and functionality for the current test run.
///</summary>
public TestContext TestContext
{
get
{
return testContextInstance;
}
set
{
testContextInstance = value;
}
}
[TestInitialize()]
public void SetupTest()
{
appURL = "http://www.bing.com/";
string browser = TestContext.Properties["browser"].ToString();
switch (browser)
{
case "Chrome":
driver = new ChromeDriver();
break;
case "Firefox":
driver = new FirefoxDriver();
break;
case "IE":
driver = new InternetExplorerDriver();
break;
default:
driver = new ChromeDriver();
break;
}
}
[TestCleanup()]
public void MyTestCleanup()
{
driver.Quit();
}
}
每次使用正确的网站启动浏览器实例，但无法继续执行以下错误：
2018-03-14T20:53:53.1180620Z Started InternetExplorerDriver server (32-bit)
2018-03-14T20:53:53.1180620Z 3.11.0.0
2018-03-14T20:53:53.1180620Z Listening on port 53215
2018-03-14T20:53:53.1180620Z Only local connections are allowed
2018-03-14T20:53:54.8474473Z Failed TheBingSearchTest
2018-03-14T20:53:54.8474473Z Error Message:
2018-03-14T20:53:54.8474473Z Test method Web.Tests.MySeleniumTests.TheBingSearchTest threw exception:
2018-03-14T20:53:54.8474473Z OpenQA.Selenium.NoSuchElementException: Unable to find element with css selector == #sb_form_q
2018-03-14T20:53:54.8474473Z Stack Trace:
2018-03-14T20:53:54.8474473Z at OpenQA.Selenium.Remote.RemoteWebDriver.UnpackAndThrowOnError(Response errorResponse)
2018-03-14T20:53:54.8474473Z at OpenQA.Selenium.Remote.RemoteWebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
2018-03-14T20:53:54.8474473Z at OpenQA.Selenium.Remote.RemoteWebDriver.FindElement(String mechanism, String value)
2018-03-14T20:53:54.8474473Z at OpenQA.Selenium.Remote.RemoteWebDriver.FindElementById(String id)
2018-03-14T20:53:54.8474473Z at OpenQA.Selenium.By.<>c__DisplayClass16_0.<Id>b__0(ISearchContext context)
2018-03-14T20:53:54.8474473Z at OpenQA.Selenium.By.FindElement(ISearchContext context)
2018-03-14T20:53:54.8474473Z at OpenQA.Selenium.Remote.RemoteWebDriver.FindElement(By by)
2018-03-14T20:53:54.8474473Z at Web.Tests.MySeleniumTests.TheBingSearchTest() in E:\BuildAgents\BuildAgent1\_work\16\s\Web.Tests\SeleniumBingTest.cs:line 29
2018-03-14T20:53:54.8474473Z
我现在已多次检查所有内容并且也在尝试不同的事情，但我没有取得任何进展。还有其他人有过类似的问题吗？
---编辑03/15 ---
根据DebanjanB的建议添加延迟后，我现在得到以下异常。它说窗户已关闭，但实际上仍然是开着的。这种行为太奇怪了。我相信我缺少一些基础设施配置，这与运行测试的TFS测试代理相关，但我无法弄清楚它可能是什么。
2018-03-15T14:20:21.5983187Z Starting test execution, please wait...
2018-03-15T14:20:22.5350340Z Started InternetExplorerDriver server (32-bit)
2018-03-15T14:20:22.5350340Z 3.9.0.0
2018-03-15T14:20:22.5350340Z Listening on port 63267
2018-03-15T14:20:22.5350340Z Only local connections are allowed
2018-03-15T14:20:23.2691823Z Skipped LoginFirstTimeTest
2018-03-15T14:20:54.6453061Z Failed TheBingSearchTest
2018-03-15T14:20:54.6453061Z Error Message:
2018-03-15T14:20:54.6453061Z Test method Web.Tests.MySeleniumTests.TheBingSearchTest threw exception:
2018-03-15T14:20:54.6453061Z OpenQA.Selenium.WebDriverTimeoutException: Timed out after 30 seconds ---> OpenQA.Selenium.NoSuchWindowException: Currently focused window has been closed.
2018-03-15T14:20:54.6453061Z Stack Trace:
2018-03-15T14:20:54.6453061Z at OpenQA.Selenium.Remote.RemoteWebDriver.UnpackAndThrowOnError(Response errorResponse)
2018-03-15T14:20:54.6453061Z at OpenQA.Selenium.Remote.RemoteWebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
2018-03-15T14:20:54.6453061Z at OpenQA.Selenium.Remote.RemoteWebDriver.FindElement(String mechanism, String value)
2018-03-15T14:20:54.6453061Z at OpenQA.Selenium.Remote.RemoteWebDriver.FindElementById(String id)
2018-03-15T14:20:54.6453061Z at OpenQA.Selenium.By.<>c__DisplayClass16_0.<Id>b__0(ISearchContext context)
2018-03-15T14:20:54.6453061Z at OpenQA.Selenium.By.FindElement(ISearchContext context)
2018-03-15T14:20:54.6453061Z at OpenQA.Selenium.Remote.RemoteWebDriver.FindElement(By by)
2018-03-15T14:20:54.6453061Z at SeleniumExtras.WaitHelpers.ExpectedConditions.<>c__DisplayClass19_0.<ElementToBeClickable>b__0(IWebDriver driver)
2018-03-15T14:20:54.6453061Z at OpenQA.Selenium.Support.UI.DefaultWait`1.Until[TResult](Func`2 condition)
2018-03-15T14:20:54.6453061Z --- End of inner exception stack trace ---
2018-03-15T14:20:54.6453061Z at OpenQA.Selenium.Support.UI.DefaultWait`1.ThrowTimeoutException(String exceptionMessage, Exception lastException)
2018-03-15T14:20:54.6453061Z at OpenQA.Selenium.Support.UI.DefaultWait`1.Until[TResult](Func`2 condition)
2018-03-15T14:20:54.6453061Z at Web.Tests.MySeleniumTests.TheBingSearchTest() in E:\BuildAgents\BuildAgent1\_work\16\s\Web.Tests\SeleniumBingTest.cs:line 31
2018-03-15T14:20:54.6453061Z
答案 0 :(得分：0)
错误说明了一切：
2018-03-14T20:53:54.8474473Z Test method Web.Tests.MySeleniumTests.TheBingSearchTest threw exception:
2018-03-14T20:53:54.8474473Z OpenQA.Selenium.NoSuchElementException: Unable to find element with css selector == #sb_form_q
从错误堆栈跟踪可以清楚地看出，驱动程序无法找到标识为的元素：
driver.FindElement(By.Id("sb_form_q"))
正如您所提到的，测试使用IE，Chrome和Firefox在本地计算机上运行。 Chrome和Firefox也适用于构建计算机，只是IE无法开始工作可能会因为不同的 Web浏览器以不同方式呈现 HTML DOM 而发生。
解决方案是使用WebDriverWait条ExpectedConditions诱导ElementToBeClickable，如下所示：
wait = new WebDriverWait(driver, TimeSpan.FromSeconds(30));
wait.Until(ExpectedConditions.ElementToBeClickable(By.Id("sb_form_q"))).SendKeys("VSTS");