Can I execute OpenCover on existing test result files?

Question

As part of the TFS Build we execute tests that generate trx files. I would like to execute on these set of files code coverage analysis using OpenCover, without re-executing the Unit Tests. Is there a way to do so?

Thanks

score 1 · Answer 1 · edited May 23 '17 at 11:52

This is a little command-line & duck-tape but it gets the OpenCover and Test results in 1 pass, and publishes test results and coverage to TFS or Visual Studio Team Services (previously VSO).

Create .bat file Run-Tests.bat that calls vstest.console.exe to test your code with the /logger:Trx option
- This creates a .trx file that can be published to TFS
Run the tests
- OpenCover.Console.exe -target:"Run-Tests.bat" -output:"OpenCover.xml"
Run OpenCoverToCoberturaConverter:
- OpenCoverToCoberturaConverter.exe -input:OpenCover.xml -output:Cobertura.xml
Publish the test results and coverage to TFS:

score 0 · Answer 2 · answered Mar 09 '15 at 12:00

0

Unfortunately not - OpenCover needs to instrument your code as it runs in order to determine which bits of code were executed.

answered Mar 09 '15 at 12:00

Shaun Wilde

8,228
4
36
56

Thank you. Do other code coverage frameworks have this ability? – Arieltk Mar 10 '15 at 11:15
What to determine code coverage based on the results of some tests? Not that I know of. – Shaun Wilde Mar 10 '15 at 12:40

Can I execute OpenCover on existing test result files?

2 Answers2