name: build
on: [push, pull_request]
jobs:
  run:
    name: Build
    strategy:
      matrix:
        #os: [macos-latest, ubuntu-latest, windows-latest]
        os: [macos-latest, ubuntu-latest]
        ocaml: [ '4.08.0', '4.03.0', '4.11.0' ]
    runs-on: ${{ matrix.os }}
    steps:
    - uses: actions/checkout@main
    - uses: avsm/setup-ocaml@v1
      with:
        ocaml-version: ${{ matrix.ocaml }}
    - name: cache opam
      id: cache-opam
      uses: actions/cache@v2
      with:
        path: _opam
        key: opam-${{matrix.operating-system}}-${{matrix.ocaml-version}}
    - run: opam pin -n .
      if: steps.cache-opam.outputs.cache-hit != 'true'
    - run: opam depext -yt containers containers-data containers-thread
      if: steps.cache-opam.outputs.cache-hit != 'true'
    - run: opam install -t . --deps-only
      if: ${{ matrix.os == 'ubuntu-latest' }} and ${{ steps.cache-opam.outputs.cache-hit != 'true' }}
    - run: opam install . --deps-only  # no test deps
      if: ${{ matrix.os != 'ubuntu-latest' }} and ${{ steps.cache-opam.outputs.cache-hit != 'true' }}
    - run: opam exec -- dune build
    - run: opam exec -- dune runtest
      if: ${{ matrix.os == 'ubuntu-latest' }}
    - run: opam exec -- dune runtest -p containers # test only core on non-ubuntu platform
      if: ${{ matrix.os != 'ubuntu-latest' }}