So, the key element here is hidden artefacts, also known as those that appear under .teamcity/ part of the build artifacts.
Some context:
We currently run dotCover over our NUnit Test step to report on our test coverage. This places a compilation of the results in a file named CoverageResults.xml under .teamcity/.NETCoverage/. This is the file I would like to accces so we can mine if for some data and send it to a gecko board.
Now, so far, we can successfully get at artifacts not in this part of the directory (such as the result of the build when we output it, etc) using the advised methodology. The problem only occurs when accessing this hidden directory.
The other odd things is the response: a 302 Temporarily Moved.
For reference, my link looks like: (in powershell btw)
"http://{0}:{1}@{2}/guestAuth/repository/download/{3}/.lastFinished/.teamcity/.NETCoverage/CoverageReport.xml" -f $serverURl, $gUName, $gPassword, $buildType
Does anyone have any advice on accessing hidden artifacts? Where else this data could be drawn from (we've found nothing on system variables for this)?
Note: We are already aware that these artifacts are not produced till the build step completes. We are doing this after the fact against a completed build, not during the Build Job itself.
Leaving the solution we came up with in case it can be help to anyone else:
In the end, we never got the nitty-gritty of the why but in short, using the in URL authentication with Powershell's Invoke-WebRequest does not work. It appears this is culled from the request created or some such but we went in another direction so I cannot comment much more on this.
What we did do was instead, use cURL. This does not do whatever Powershell does so we simply broke this down into two steps on the Team City Build. A command line step to use cURL to download the file and place it in a temporary directory and the a Powershell step afterwards to get the file and do what we wanted to do.