Code Coverage report not generated with command dotnet test /p:CollectCoverage=true /p:CoverletOutput='./results/'

[kallam9]

Tried generating Code coverage report, But not able to generate the report
After running the command line
dotnet test /p:CollectCoverage=true /p:CoverletOutput='./results.json'

Checking in the complete project
Please let me know if I am doing anything wrong.

[pape77]

Silly question but did you add your project's .csproj's path to that command line? otherwise dotnet doesn't know what to test :P

Also asuming you included the pkg in your test .csproj

[cternes]

Had the same issue and in my case the problem was that the package reference "coverlet.msbuild" was not properly added by Visual Studio to the *.csproj file.

I was able to solve it by manually running "dotnet add package coverlet.msbuild" in the project folder and running "dotnet test" again after it.

[danielpalme]

I have a similar problem. coverlet.msbuild is added to project.

When I execute dotnet test /p:CollectCoverage=true XUnitTestProject\XUnitTestProject.csproj the test(s) are executed successfully but no coverage is available:

Calculating coverage result...
  Generating report 'coverage.json'

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

Total Line: 0%
Total Branch: 0%
Total Method: 0%

Here is a minimum sample project:
XUnitTestProject.zip

[tonerdo]

@danielpalme your unit test project has no project/assembly dependencies so there's nothing for Coverlet to instrument

[danielpalme]

@tonerdo Thanks for the explanation. Wasn't aware of that.

[mmigala]

I didn't build the project before running dotnet test /p:CollectCoverage=true. After build everything started working.

[MarcoRossignoli]

@kallam9 any news?
Feel free to close please if solved.

[MarcoRossignoli]

Close for stale, feel free to re-open if needed.

[nZeus]

In our caseafter the upgrade of dontet core sdk to 3.1.301 it stopped working.

Upgrade of coverlet.msbuild from version 2.4.* to 2.9.* solved the issue

[chixuroblox]

Had the same issue and in my case the problem was that the package reference "coverlet.msbuild" was not properly added by Visual Studio to the *.csproj file.

I was able to solve it by manually running "dotnet add package coverlet.msbuild" in the project folder and running "dotnet test" again after it.

You saved my life bro