Create merged coverage to html

[amit-62]

It generatescoverage.out as an artifact and merges it to coverage.html.
fixes #1256

[ti-mo]

This doesn't make much sense. vm-test has a test matrix that runs this against a wide range of kernel versions, and we need test coverage for each of them.

The point is to add coverage reporting to the existing vm-test, test-on-prev-go and test-on-arm64 jobs. Ideally, this would all be done in a single step to keep the size of the yaml a bit manageable:

      - run: go tool covdata merge -o coverage-merged.out
      - run: go tool cover -html=coverage-merged.out -o coverage.html

      - name: Upload Coverage Report
        uses: actions/upload-artifact@v3
        with:
          name: coverage-report
          path: |
            ./coverage-merged.out
            ./coverage.html

[amit-62]

Will I have to add this to all three job or it can be done in another separate job?

[ti-mo]

If we want coverage for all three jobs (we do), then yes, it needs to be in all three. 🙂

[amit-62]

Hello @ti-mo, I have got an error about input directories, from which it will merge data from multiple dirs. What should I use for input directories?

[lmb]

Closing this for now.