我有以下代码在每次测试中启动浏览器。但是，第一个测试运行正常，启动浏览器。病房的第二次测试开始失败
public class BrowserFactory
{
private static IWebDriver driver;
public static IWebDriver Driver
{
get
{
if (driver == null)
throw new NullReferenceException("The WebDriver browser instance was not initialized. You should first call the method InitBrowser.");
return driver;
}
set
{
driver = value;
}
}
public static void InitBrowser(string browserName)
{
switch (browserName)
{
case "Firefox":
if (driver == null)
{
driver = new FirefoxDriver();
driver.Manage().Window.Maximize();
}
break;
case "IE":
if (driver == null)
{
driver = new InternetExplorerDriver();
driver.Manage().Window.Maximize();
}
break;
case "Chrome":
if (driver == null)
{
driver = new ChromeDriver();
driver.Manage().Window.Maximize();
}
break;
}
}
这就是我在每个测试中启动和退出浏览器的方式
[的TestFixture]
public class AdminUserHasAccessToDashboard
{
[SetUp]
public void GotoHomePage()
{
BrowserFactory.InitBrowser("Chrome");
BrowserFactory.LoadApplication(ConfigurationManager.AppSettings["URL"]);
}
[TearDown]
public void Quit()
{
BrowserFactory.CloseAllDrivers();
}
答案 0 :(得分：0)
看起来您可能在第一次测试中设置了驱动程序实例，而if (driver == null)上的其他测试都是假的，因此永远不会创建其他实例。你的代码不完整所以我不能确定，但这似乎是一个问题。
第一次测试完成后你是如何关闭你的驱动程序的？
答案 1 :(得分：0)
在浏览器工厂中包含下面提到的方法，并在每次测试结束时调用，或者在运行测试之前进行设置，然后在每个测试中使用单个实例并在结束时拆除。
public static void Quit(){
if (Driver!= null)
Driver.Quit();
}
我使用静态“Driver”类，它在每个测试类中引用（不是每个测试用例）
我在每个类中都包含它（它们是nunit C＃测试）
#region Initialise and clean up
[OneTimeSetUp]
public void Init()
{
Driver.Initialise();
}
[OneTimeTearDown]
public void CleanUp()
{
Driver.Quit();
}
#endregion
然后我的驱动程序类如下，appstate区域不适用，但可以编辑以满足您的需要。
using System;
using System.Threading;
using OpenQA.Selenium;
using OpenQA.Selenium.Firefox;
using AdaptiveAds_TestFramework.PageFrameworks;
namespace AdaptiveAds_TestFramework.Helpers
{
/// <summary>
/// Contains functionality for browser automation.
/// </summary>
public static class Driver
{
#region Variables
private static IWebDriver _instance;
private static Period _waitPeriod;
#endregion//Variables
#region Properties
/// <summary>
/// Browser automation object.
/// </summary>
public static IWebDriver Instance
{
get { return _instance; }
set { _instance = value; SetWait(WaitPeriod); }
}
/// <summary>
/// Duration automation framework must wait before throwing an error.
/// </summary>
public static Period WaitPeriod
{
get { return _waitPeriod; }
set
{
_waitPeriod = value;
SetWait(_waitPeriod);
}
}
#endregion//Properties
#region Methods
#region set-up and tear-down
/// <summary>
/// Sets up a new automation object.
/// </summary>
public static void Initialise()
{
Quit();
Instance = new FirefoxDriver(new FirefoxBinary(ConfigData.FireFoxPath), new FirefoxProfile());
Instance.Manage().Window.Maximize();
WaitPeriod = ConfigData.DefaultWaitPeriod;
}
/// <summary>
/// Disposes of the automation object.
/// </summary>
public static void Quit()
{
if (Instance != null)
Instance.Quit();
}
#endregion //set-up and tear-down
#region NavigableLocations
/// <summary>
/// Navigate browser to a given location.
/// </summary>
/// <param name="location">Location to navigate to.</param>
/// <param name="logInIfNeeded">Logs in if authentication is required.</param>
/// <param name="errorIfNotReached">Errors if the location was not reached.</param>
public static void GoTo(Location location, bool logInIfNeeded, bool errorIfNotReached)
{
// Navigate browser to the location.
Instance.Navigate().GoToUrl(Helper.RouteUrl(location));
Thread.Sleep(500);// wait for system to navigate
bool needToLogIn = false;
if (logInIfNeeded)
{
try
{
IsAt(Location.Login);
needToLogIn = true;
}
catch
{
// Not at login page so Login not needed.
}
if (needToLogIn)
{
LoginPage.LoginAs(ConfigData.Username).WithPassword(ConfigData.Password).Login();
GoTo(location, false, errorIfNotReached);
}
}
if (errorIfNotReached)
{
IsAt(location);
}
}
/// <summary>
/// Ensures the Driver is at the specified location, throws a WebDriverException if at another location.
/// </summary>
/// <param name="location">Location to check the browser is at.</param>
public static void IsAt(Location location)
{
string expected = Helper.RouteUrl(location);
string actual = Instance.Url;
// Check the browser is at the correct location.
if (actual != expected)
{
// Driver is not at the specified location.
throw new WebDriverException("Incorrect location.",
new InvalidElementStateException(
"The given location did not match the browser." +
" Expected \"" + expected + "\" Actual \"" + actual + "\""));
}
ActionWait(Period.None, CheckForLavarelError);
}
/// <summary>
/// Ensures the Driver is not at the specified location, throws a WebDriverException if at the location.
/// </summary>
/// <param name="location">Location to check the browser is not at.</param>
public static void IsNotAt(Location location)
{
string expected = Helper.RouteUrl(location);
string actual = Instance.Url;
// Check the browser is not at the correct location.
if (actual == expected)
{
// Driver is at the specified location.
throw new WebDriverException("Incorrect location.",
new InvalidElementStateException(
"The given location matched the browser."));
}
}
#endregion//NavigableLocations
#region WaitHandling
/// <summary>
/// Performs an action with a temporary wait period.
/// </summary>
/// <param name="waitPeriod">Period to wait while executing action.</param>
/// <param name="action">Action to execute.</param>
public static void ActionWait(Period waitPeriod, Action action)
{
// Store the current wait period
Period previousPeriod = WaitPeriod;
// Run task with given wait period
SetWait(waitPeriod);
action();
// Revert to the old wait period
SetWait(previousPeriod);
}
/// <summary>
/// Updates the Automation instance wait period.
/// </summary>
/// <param name="waitPeriod">New wait period.</param>
private static void SetWait(Period waitPeriod)
{
int miliseconds;
ConfigData.WaitPeriods.TryGetValue(waitPeriod, out miliseconds);
// Set the drivers instance to use the wait period.
if (Instance != null)
{
Instance.Manage().Timeouts().ImplicitlyWait(TimeSpan.FromMilliseconds(miliseconds));
}
}
#endregion//WaitHandling
#region AppState
/// <summary>
/// Checks that the website hasn't crashed from the back end.
/// </summary>
public static void CheckForLavarelError()
{
bool error = false;
try
{
Instance.FindElement(By.ClassName("exception_message"));
error = true;
}
catch
{
// all good, could not find error content.
}
if (error)
{
throw new Exception("Lavarel threw an error");
}
}
/// <summary>
/// Clicks on the main menu button to open or close the main menu.
/// </summary>
public static void OpenCloseMenuBar()
{
try
{
IWebElement menuButton = Instance.FindElement(By.Name(ConfigData.MainMenuButtonName));
menuButton.Click();
}
catch (Exception e)
{
throw new NoSuchElementException("Could not find the Menu button element.", e);
}
}
/// <summary>
/// Asserts the logged in state agents the parameter.
/// </summary>
/// <param name="checkLoggedIn">Parameter to check agents logged in state.</param>
public static void LoggedIn(bool checkLoggedIn)
{
OpenCloseMenuBar();
bool signInFound;
bool signOutFound;
bool isLoggedIn = false;
try { Instance.FindElement(By.Name(ConfigData.SignInName)); signInFound = true; }
catch { signInFound = false; }
try { Instance.FindElement(By.Name(ConfigData.SignOutName)); signOutFound = true; }
catch { signOutFound = false; }
if (!signInFound && !signOutFound)
{
throw new ElementNotVisibleException("Unable to assert state due to unavailability of SignIn/Out links.");
}
if (signOutFound) isLoggedIn = true;
if (signInFound) isLoggedIn = false;
if (isLoggedIn != checkLoggedIn)
{
throw new Exception($"Logged in Expected: {checkLoggedIn} Actual: {isLoggedIn}");
}
}
/// <summary>
/// Signs out of the system.
/// </summary>
/// <param name="errorIfAlreadySignedOut">Determines whether to throw an error if already signed out.</param>
public static void SignOut(bool errorIfAlreadySignedOut = true)
{
try
{
LoggedIn(true);
}
catch (Exception)
{
if (errorIfAlreadySignedOut)
{
throw;
}
return;
}
IWebElement signOut = Instance.FindElement(By.Name(ConfigData.SignOutName));
signOut.Click();
Thread.Sleep(500);// wait for system to logout
}
#endregion//AppState
#endregion//Methods
}
}