Code coverage returns NAN%

I have seen some reports of this here, but they doesn’t have any solutions due to inactivity, so I’ll try again.

I have a test project using coverlet, but whenever I try to run either dotnet test /p:CollectCoverage=true or the coverlet command I get the following result and an empty coverlet file.

Test Run Successful.
Total tests: 47
     Passed: 47
 Total time: 1,3797 Seconds

Calculating coverage result...
  Generating report 'XXXX'

+--------+------+--------+--------+
| Module | Line | Branch | Method |
+--------+------+--------+--------+

+---------+------+--------+--------+
|         | Line | Branch | Method |
+---------+------+--------+--------+
| Total   | 100% | 100%   | 100%   |
+---------+------+--------+--------+
| Average | NaN% | NaN%   | NaN%   |
+---------+------+--------+--------+

I have referenced both coverlet.collector and coverlet.msbuild packages in my project…

Any ideas why or suggestions how to find more information about the issue?

[wdolek]

@MarcoRossignoli Just spent whole day trying to figure out why Coverlet works locally and not when running on GitLab Actions. I guess this is great candidate for another “Known issue” - it didn’t really strike me I should look into “Deterministic build”, I was iterating over other pages, tried adding/removing arguments, even lost my confidence in putting together shell commands.

Anyway, @dozer75 thanks for pointing this out! 🙇

[MarcoRossignoli]

I’ll add to known issue!