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Merge and convert the rego coverage format to codecov json

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SVilgelm/opa-codecov

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opa-codecov

The tool to merge and then convert the coverage file generated by opa test --coverage <path> to a simple JSON that is supported by Codecov.

Real Example

Here is the report uploaded to codecov for the testdata/authz/authz.rego file: https://app.codecov.io/gh/SVilgelm/opa-codecov/blob/main/testdata/authz/authz.rego

The test covers expected 50%

Usage

GitHub Action

  opa-tests:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: actions/setup-go@v4
        with:
          check-latest: true
      - name: Setup OPA
        uses: open-policy-agent/setup-opa@v2
        with:
          version: latest
      - name: Run OPA Tests
        run: opa test tests/*.rego -v 
      - name: OPA Coverage
        run: |
          go install github.com/sv-tools/opa-codecov@main
          opa test tests/*.rego -v --coverage | opa-codecov > coverage.json
      - name: Publish coverage
        uses: codecov/codecov-action@v3
        with:
          token: ${{ secrets.CODECOV_TOKEN }}
          files: coverage.json
          flags: opa
          verbose: true
          fail_ci_if_error: true

As script

go install github.com/sv-tools/opa-codecov@main
opa test tests/*.rego -v --coverage | opa-codecov > coverage.json

With multiple files

go install github.com/sv-tools/opa-codecov@main
for PKG in $$(find system-types -path "system-types/*/*/spec/typelib"); do \
    NAME=$(echo "${PKG}"|sed "s#/#_#g"); \
    opa test --coverage ${PKG} > opa-coverage-${NAME}.json; \
done
opa-codecov opa-coverage-*.json > opa-coverage.json
rm opa-coverage-*.json