We run Selenium tests nightly on our TeamCity build server.
We have some tests that fail intermittenly during our nightly run.
Screenshots of failed tests haven't really provided an answer, so I want to record the execution of failed tests.
I have implemented the following to record test execution of tests I want to investigate.
ScreenCaptureJob = new ScreenCaptureJob { CaptureRectangle = Screen.PrimaryScreen.Bounds, ShowFlashingBoundary = true, OutputPath = outputPath }; ScreenCaptureJob.Start(); Debug.WriteLine($"Status: {ScreenCaptureJob.Status}"); Test code... ScreenCaptureJob.Stop(); If the test fails I encode the captured video and save it. This works fine when I run the test locally.
But, when I run this on the build server the ScreenCaptureJob has a status of NotStarted.
No temp file is written to disc, so there is nothing to encode when the test fails.
MediaItem mediaItem = new MediaItem(fileName); Job job = new Job(); job.MediaItems.Add(mediaItem); job.ApplyPreset(Presets.VC1HD720pVBR); job.OutputDirectory = outputPath; job.Encode(); Exception occurs when I try to create a new MediaItem from the temp file.
TestCleanup method UITests.FailingTest.TestCleanup threw exception. Microsoft.Expression.Encoder.InvalidMediaFileException: Microsoft.Expression.Encoder.InvalidMediaFileException: File not found. EE4 is installed on the build server, and I have tested capturing with the EE4 program itself.
Does anyone have an idea of why the ScreenCaptureJob fails to start on the server?
1 Answers
Answers 1
Running tests on Windows Server require you to add the feature
User Interfaces
and
Infrastructure > Desktop Experience
to install missing dependencies required by Microsoft Expression Encoder.
If you already did this and it doesn't work read this article, it is very helpful and there is a link to GitHub profile with the code used for the video recording. The author uses ScreenCaptureJob thru interface which sounds great.
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