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[🐛 Bug]: Dotnet Error in 4.11.0 when using ChromeDriverService.CreateDefaultService() #12483

Closed timandella closed 1 year ago

timandella commented 1 year ago

What happened?

When using ChromeDriverService.CreateDefaultService() to instantiate a ChromeDriver, the error "Unable to obtain chrome using Selenium Manager" occurs. This started happening in 4.11.0, but was fine in 4.10.0

How can we reproduce the issue?

var options = new ChromeOptions();
if (settings.Headless && !Debugger.IsAttached)
{
    options.AddArgument("--headless");
}
options.AddArgument("--window-size=1920,1080");
options.AddArgument("--enable-javascript");
options.AddArgument("--lang=en-GB");
options.AddUserProfilePreference("intl.accept_languages", "en-GB");

options.AddArgument("--ignore-certificate-errors");
options.AddArgument("--no-sandbox");
options.AddArgument("--disable-dev-shm-usage");
options.UnhandledPromptBehavior = UnhandledPromptBehavior.Dismiss;

_context.Driver = new ChromeDriver(ChromeDriverService.CreateDefaultService(), options, TimeSpan.FromMinutes(2));

Relevant log output

Error Message:
   OpenQA.Selenium.NoSuchDriverException : Unable to obtain chrome using Selenium Manager; For documentation on this error, please visit: https://www.selenium.dev/documentation/webdriver/troubleshooting/errors/driver_location
  ----> OpenQA.Selenium.WebDriverException : Error starting process: /home/vsts/work/1/uecd-tests-e2e/net6.0/selenium-manager/linux/selenium-manager  --browser "chrome" --output json
  ----> System.ComponentModel.Win32Exception : An error occurred trying to start process '/home/vsts/work/1/uecd-tests-e2e/net6.0/selenium-manager/linux/selenium-manager' with working directory '/home/vsts/work/1/uecd-tests-e2e/net6.0'. Permission denied
TearDown : System.NullReferenceException : Object reference not set to an instance of an object.
  Stack Trace:
     at OpenQA.Selenium.DriverFinder.FullPath(DriverOptions options)
   at OpenQA.Selenium.Chrome.ChromeDriverService.CreateDefaultService(ChromeOptions options)
   at OpenQA.Selenium.Chrome.ChromeDriverService.CreateDefaultService()
   at TestProject.Hooks.BeforeScenario.InitializeDriver(ChromeOptions options) in /home/vsts/work/1/s/apps/test/TestProject/TestProject/Hooks/BeforeScenario.cs:line 36
   at TechTalk.SpecFlow.Infrastructure.TestExecutionEngine.FireEvents(HookType hookType)
   at TechTalk.SpecFlow.Infrastructure.TestExecutionEngine.FireScenarioEvents(HookType bindingEvent)
   at TechTalk.SpecFlow.Infrastructure.TestExecutionEngine.OnScenarioStart()
   at TechTalk.SpecFlow.Infrastructure.TestExecutionEngine.OnAfterLastStep()
   at TechTalk.SpecFlow.TestRunner.CollectScenarioErrors()
   at TestProject.Features.AdminPageFeature.ScenarioCleanup()
   at TestProject.Features.AdminPageFeature.EmailFieldIsReadonlyByDefault() in /home/vsts/work/1/s/apps/test/TestProject/TestProject/Features/AdminPage.feature:line 47
--WebDriverException
   at OpenQA.Selenium.SeleniumManager.RunCommand(String fileName, String arguments)
   at OpenQA.Selenium.SeleniumManager.DriverPath(DriverOptions options)
   at OpenQA.Selenium.DriverFinder.FullPath(DriverOptions options)
--Win32Exception
   at System.Diagnostics.Process.ForkAndExecProcess(ProcessStartInfo startInfo, String resolvedFilename, String[] argv, String[] envp, String cwd, Boolean setCredentials, UInt32 userId, UInt32 groupId, UInt32[] groups, Int32& stdinFd, Int32& stdoutFd, Int32& stderrFd, Boolean usesTerminal, Boolean throwOnNoExec)
   at System.Diagnostics.Process.StartCore(ProcessStartInfo startInfo)
   at System.Diagnostics.Process.Start()
   at OpenQA.Selenium.SeleniumManager.RunCommand(String fileName, String arguments)
--TearDown
   at TestProject.Hooks.Cleanup.TakeSceenShotOnError() in /home/vsts/work/1/s/apps/test/TestProject/TestProject/Hooks/Cleanup.cs:line 48
   at TechTalk.SpecFlow.Infrastructure.TestExecutionEngine.FireEvents(HookType hookType)

Operating System

Linux

Selenium version

4.11.0

What are the browser(s) and version(s) where you see this issue?

Chrome

What are the browser driver(s) and version(s) where you see this issue?

ChromeDriver 114.0.5735.90

Are you using Selenium Grid?

N/A

github-actions[bot] commented 1 year ago

@timandella, thank you for creating this issue. We will troubleshoot it as soon as we can.

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Thank you!

titusfortner commented 1 year ago

So permissions issues with .NET on Linux...

I don't see anything we've changed that should have affected the permissions between 4.10 and 4.11. We've been working on some things, but none of them have been merged yet.

@nvborisenko do you think we should explicitly chmod the file for non-windows?

nvborisenko commented 1 year ago

We have the same permissions for 4.10 and 4.11

nick@DESKTOP-SM1DOE9:~$ ls -l ~/.nuget/packages/selenium.webdriver/4.10.0/manager/linux
total 4408
-rwxr--r-- 1 nick nick 4512416 Jun  5 14:38 selenium-manager
nick@DESKTOP-SM1DOE9:~$ ls -l ~/.nuget/packages/selenium.webdriver/4.11.0/manager/linux
total 4896
-rwxr--r-- 1 nick nick 5009528 Jul 31 22:10 selenium-manager

@timandella can you please run it on your environment where the issue reproduces

ls -l /home/vsts/work/1/uecd-tests-e2e/net6.0/selenium-manager/linux/selenium-manager
timandella commented 1 year ago

This is what the command returns...

-rw-r--r-- 1 vsts docker 4512416 Aug 3 16:34 /home/vsts/work/1/uecd-tests-e2e/net6.0/selenium-manager/linux/selenium-manager

nvborisenko commented 1 year ago

So, this file is not executable. You lost file permission while were manipulating with it. Most likely it might be happened by archiving it, or downloading from external sources.

As a workaround you can set proper permission:

chmod +x /home/vsts/work/1/uecd-tests-e2e/net6.0/selenium-manager/linux/selenium-manager

But better if you find a stage in your process where you lose file attribute.

timandella commented 1 year ago

The permissions listed above were obtained before our test application run, and is like that regardless of what version of Selenium are used (indeed I ran that command whilst running with 4.10.0 and there were no problems encountered).

titusfortner commented 1 year ago

Oh. The difference in 4.11 is that Selenium manager is what is checking path instead of the bindings.

So I'm guessing you have the driver in path and selenium skipped the manager entirely in 4.10. Can you run the Selenium code with greater permissions?

titusfortner commented 1 year ago

You can also create a service class instance with the location of the driver specified and this should also skip the manager.

timandella commented 1 year ago

I tried the work around to use chmod to set permissions, and this was successful.

titusfortner commented 1 year ago

There isn't anything obvious for Selenium to do. We probably can add a conditional to add an argument for Linux/Mac to explicitly chmod the file we're executing in the start process info, but I don't think we want to do that unless we see it as a bigger problem. I'm closing this for now.

github-actions[bot] commented 11 months ago

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.