Testcafe: Screenshot on teamcity agent fails with error

[satispunk]

Are you requesting a feature or reporting a bug?

Bug

What is the current behavior?

t.takeScreenshot fails in a background.

Was unable to take a screenshot due to an error.|n|nCommand failed: E:\BuildAgent\work\8a3cefc0dd10ecd5\node_modules\testcafe-browser-tools\bin\win\screenshot.exe 3539314 firefox E:\BuildAgent\work\8a3cefc0dd10ecd5\test\testcafe\reports\screenshots\2017-07-18_04-17-21\test-1\Firefox_45.0.0_Windows_8.1_0.0.0\1.png|n|nUnhandled Exception: System.ComponentModel.Win32Exception: The handle is invalid|r|n   at System.Drawing.Graphics.CopyFromScreen(Int32 sourceX, Int32 sourceY, Int32 destinationX, Int32 destinationY, Size blockRegionSize, CopyPixelOperation copyPixelOperation)|r|n   at System.Drawing.Graphics.CopyFromScreen(Point upperLeftSource, Point upperLeftDestination, Size blockRegionSize, CopyPixelOperation copyPixelOperation)|r|n   at BrowserTools.Screenshot.CaptureFromScreen(IntPtr hwnd, WindowInfo wi)|r|n   at BrowserTools.Screenshot.CaptureWindow(IntPtr hwnd, String processName)|r|n   at BrowserTools.Screenshot.Main(String|[|] args)|n|n     Was unable to take a screenshot due to an error.|n|nCommand failed: E:\BuildAgent\work\8a3cefc0dd10ecd5\node_modules\testcafe-browser-tools\bin\win\screenshot.exe 7602576 chrome E:\BuildAgent\work\8a3cefc0dd10ecd5\test\testcafe\reports\screenshots\2017-07-18_04-17-21\test-1\Chrome_59.0.3071_Windows_8.1_0.0.0\1.png|n|nUnhandled Exception: System.ComponentModel.Win32Exception: The handle is invalid|r|n   at System.Drawing.Graphics.CopyFromScreen(Int32 sourceX, Int32 sourceY, Int32 destinationX, Int32 destinationY, Size blockRegionSize, CopyPixelOperation copyPixelOperation)|r|n   at System.Drawing.Graphics.CopyFromScreen(Point upperLeftSource, Point upperLeftDestination, Size blockRegionSize, CopyPixelOperation copyPixelOperation)|r|n   at BrowserTools.Screenshot.CaptureFromScreen(IntPtr hwnd, WindowInfo wi)|r|n   at BrowserTools.Screenshot.CaptureWindow(IntPtr hwnd, String processName)|r|n   at BrowserTools.Screenshot.Main(String|[|] args)|n

What is the expected behavior?

Screenshot is taken successfully

How would you reproduce the current behavior (if this is a bug)?

Run test on TC agent

Provide the test code and the tested page URL (if applicable)

Test code

await t.takeScreenshot()

Specify your

• operating system: Windows 8.1
• testcafe version: 0.16
• node.js version: 6.6.0

[AndreyBelym]

Hello @satispunk! If you are starting the TeamCity agent as a service, can you please try to start it from CLI: https://confluence.jetbrains.com/display/TCD9/Setting+up+and+Running+Additional+Build+Agents#SettingupandRunningAdditionalBuildAgents-StartingtheBuildAgent?

[AlexanderMoskovkin]

The issue should be fixed with the #1691. The fix is published in the latest dev version:
npm install [email protected] or npm install testcafe@dev.

Feel free to reopen the issue if the problem still occurs.

[satispunk]

@AlexanderMoskovkin Thank you! will have a look and return with feedback

[satispunk]

@AlexanderMoskovkin
Hi. I've test 17.2 version. The problems still exists.
But also found another way to reproduce it.

1. Connect to another machine (virtual or real) using windows remote desktop connection
2. Run tests which create screenshots
3. Minimize remote desktop connection and wait some time until test run is finished

I get the same error:

Was unable to take a screenshot due to an error.

Command failed:
C:devconfirmit.hub.clientnode_modulestestcafe-browser-toolsbinwinscreenshot.exe
263454 chrome
C:devconfirmit.hub.clienttesttestcafereportsscreenshots2017-09-10_05-40-44test-1Chrome_60.0.3112_Windows_8.1_0.0.01.png

Unhandled Exception: System.ComponentModel.Win32Exception: The handle is
invalid
at System.Drawing.Graphics.CopyFromScreen(Int32 sourceX, Int32 sourceY,
Int32 destinationX, Int32 destinationY, Size blockRegionSize,
CopyPixelOperation copyPixelOperation)
at System.Drawing.Graphics.CopyFromScreen(Point upperLeftSource, Point
upperLeftDestination, Size blockRegionSize, CopyPixelOperation
copyPixelOperation)
at BrowserTools.Screenshot.CaptureFromScreen(IntPtr hwnd, WindowInfo wi)
at BrowserTools.Screenshot.CaptureWindow(IntPtr hwnd, String
processName)
at BrowserTools.Screenshot.Main(String[] args)

So I assume that if the desktop is not shown physically then testcafe can't get window handle to make screenshot

[AlexanderMoskovkin]

@satispunk Thanks for the info, we'll investigate it /cc @AndreyBelym

[panupetteri]

I also have the same issue. I'm running TestCafé in OctopusDeploy as custom script using command

testcafe chrome .\tests.ts --screenshots C:\screenshots --screenshots-on-fails

OctopusDeploy runs in Windows Server 2012 under LocalSystem account. Node.js version is 8.9.4 and TestCafé version is 0.18.6. Chrome version is 64.0.

The error message is:

Was unable to take a screenshot due to an error. Command failed: C:\Program Files\nodejs\node_modules\testcafe\node_modules\testcafe-browser-tools\bin\win\screenshot.exe 4194442 chrome C:\screenshots\2018-03-06_11-13-20\test-2\Chrome_63.0.3239_Windows_8.0.0\errors\1.png Unhandled Exception: System.ComponentModel.Win32Exception: The handle is invalid at System.Drawing.Graphics.CopyFromScreen(Int32 sourceX, Int32 sourceY, Int32 destinationX, Int32 destinationY, Size blockRegionSize, CopyPixelOperation copyPixelOperation) at System.Drawing.Graphics.CopyFromScreen(Point upperLeftSource, Point upperLeftDestination, Size blockRegionSize, CopyPixelOperation copyPixelOperation) at BrowserTools.Screenshot.CaptureFromScreen(IntPtr hwnd, WindowInfo wi) at BrowserTools.Screenshot.CaptureWindow(IntPtr hwnd, String processName) at BrowserTools.Screenshot.Main(String[] args)

[viraxslot]

Hi there, same for me with TFS.
Windows 10, testcafe 0.19.2, Firefox 59, node 10.0, npm: 5.6.0

My command to run testcafe:
testcafe chrome,opera,firefox -c 2 src/tests -r spec,nunit:results/nunit-results.xml -S -s logs/screenshots

Warnings (1):
--
 Was unable to take a screenshot due to an error.
 Error: Command failed:
 C:\agent\_work\1\s\node_modules\testcafe-browser-tools\bin\win\screenshot.exe
 853870 firefox
 C:\agent\_work\1\s\logs\screenshots\2018-05-07_01-58-18\test-65\Firefox_59.0.0_Windows_10.0.0\errors\1.png
 Unhandled Exception: System.ComponentModel.Win32Exception: The handle is
 invalid
    at System.Drawing.Graphics.CopyFromScreen(Int32 sourceX, Int32 sourceY,
 Int32 destinationX, Int32 destinationY, Size blockRegionSize,
 CopyPixelOperation copyPixelOperation)
    at System.Drawing.Graphics.CopyFromScreen(Point upperLeftSource, Point
 upperLeftDestination, Size blockRegionSize, CopyPixelOperation
 copyPixelOperation)
    at BrowserTools.Screenshot.CaptureFromScreen(IntPtr hwnd, WindowInfo wi)
    at BrowserTools.Screenshot.CaptureWindow(IntPtr hwnd, String
 processName)
    at BrowserTools.Screenshot.Main(String[] args)
     at ChildProcess.exithandler (child_process.js:282:12)
     at ChildProcess.emit (events.js:182:13)
     at ChildProcess.EventEmitter.emit (domain.js:442:20)
     at maybeClose (internal/child_process.js:947:16)
     at Process.ChildProcess._handle.onexit (internal/child_process.js:236:5)
#[error]Process completed with exit code 2.

[AndreyBelym]

Hi @satispunk, @panupetteri, @viraxslot, from what I have now it looks like it's a technical limitation in Windows. Maybe there is group policy or something to keep desktop GUI operational for remote connections. Currently you could try to use browsers in headless mode.

[AndreyBelym]

This issue must be fixed by https://github.com/DevExpress/testcafe/pull/2492. I'll notify you when a build with the fix will be published on NPM. Feel free to try the fixed build and reopen the issue if the problem isn't solved in your environment.

[maqpratika]

Can you please share the resolution details? What made it fix?

[miherlosev]

Hi @maqpratika

Starting with 0.20.4 version, TestCafe uses a build-in browser functionality for making screenshots (only for Chrome and Firefox). It allows TestCafe to prevent all platform-specific problems with screenshots.

Try this version and tell us about your results.

[viraxslot]

@miherlosev
Hi, thanks a lot. Now I have no errors on making screenshots in TFS + testcafe 0.20.4
Is there any options to shoot window with scroll?

[miherlosev]

Hi, thanks a lot. Now I have no errors on making screenshots in TFS + testcafe 0.20.4

Excellent.

Is there any options to shoot window with scroll?

Please describe in more detail what options do you need?

[viraxslot]

@miherlosev

Please describe in more detail what options do you need?

On screenshot now I see only active part of browser window, but want to see all window (scrolled from the beginning to the end). Is it possible?

[miherlosev]

At present, it is not possible.
Track an issue https://github.com/DevExpress/testcafe/issues/1520 to be aware about progress.

[lock[bot]]

This thread has been automatically locked since it is closed and there has not been any recent activity. Please open a new issue for related bugs or feature requests. We recommend you ask TestCafe API, usage and configuration inquiries on StackOverflow.