Best practice to access the lcov file from base branch?

[nilsreichardt]

Is there an example how to access in a good & easy way the lcov file from the base branch?

[nilsreichardt]

My current approach is:

1. Create coverage report for head branch
2. Rename this file
3. Checkout to base branch
4. Create coverage report for base branch

      - name: Run tests
        working-directory: ${{ env.WORKING_DIRECTORY }}
        run: |
          npm install -g nyc
          npm run ci

      - name: Create Coverage Report for base branch
        run: |
          mv $WORKING_DIRECTORY/coverage/lcov.info $WORKING_DIRECTORY/coverage/lcov_head.info
          git fetch
          git checkout origin/${{ github.event.pull_request.base.ref }}
          cd $WORKING_DIRECTORY && npm run ci

      - name: Post Coverage Report
        uses: romeovs/[email protected]
        with:
          lcov-file: "${{ env.WORKING_DIRECTORY }}/coverage/lcov_head.info"
          lcov-base: "${{ env.WORKING_DIRECTORY }}/coverage/lcov.info"
          github-token: "${{ secrets.GITHUB_TOKEN }}"
          delete-old-comments: true

[keremciu]

great! @nilsreichardt I was looking for a solution in my fork, I would try it out some stuff to make it a good PR :)