coverage.yml

name: coverage

on:
  pull_request:

  workflow_dispatch:

  schedule:
    # nightly
    - cron: '31 1 * * *' # 01:31 UTC, 02:31/03:31 Munich, 03:31/04:31 Tartu
    # GitHub Actions load is high at minute 0, so avoid that

jobs:
  coverage:
    strategy:
      fail-fast: false
      matrix:
        os:
          - ubuntu-22.04 # https://github.com/ocaml/setup-ocaml/issues/872
        ocaml-compiler:
          - ocaml-variants.4.14.2+options,ocaml-option-flambda # matches opam lock file
          # don't add any other because they won't be used

    runs-on: ${{ matrix.os }}

    env:
      OCAMLRUNPARAM: b

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up OCaml ${{ matrix.ocaml-compiler }}
        env:
          # otherwise setup-ocaml pins non-locked dependencies
          # https://github.com/ocaml/setup-ocaml/issues/166
          OPAMLOCKED: locked
        uses: ocaml/setup-ocaml@v3
        with:
          ocaml-compiler: ${{ matrix.ocaml-compiler }}

      - name: Install graph-easy # TODO: remove if depext --with-test works
        if: ${{ matrix.os == 'ubuntu-22.04' }}
        run: sudo apt install -y libgraph-easy-perl

      - name: Install dependencies
        run: opam install . --deps-only --locked --with-test

      - name: Install coverage dependencies
        run: opam install bisect_ppx

      - name: Build
        run: ./make.sh coverage

      - name: Download Linux headers
        run: ./make.sh headers

      - name: Test
        run: opam exec -- dune runtest --instrument-with bisect_ppx

      - run: opam exec -- bisect-ppx-report send-to Coveralls
        env:
          COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
          PULL_REQUEST_NUMBER: ${{ github.event.number }}

      - uses: actions/upload-artifact@v4
        if: always()
        with:
          name: suite_result
          path: tests/suite_result/