name: build

on:
  - push
  - pull_request

jobs:
  builds:
    name: Earliest Supported Version
    strategy:
      fail-fast: false
      matrix:
        os:
          - ubuntu-latest
        ocaml-version:
          - 4.04.0

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

    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Use OCaml ${{ matrix.ocaml-version }}
        uses: avsm/setup-ocaml@v1
        with:
          ocaml-version: ${{ matrix.ocaml-version }}

      - name: Deps
        run: |
          opam pin add -n angstrom .
          opam install --deps-only angstrom

      - name: Build
        run: opam exec -- dune build -p angstrom

  tests:
    name: Tests
    strategy:
      fail-fast: false
      matrix:
        os:
          - ubuntu-latest
        ocaml-version:
          - 4.08.1
          - 4.10.2
          - 4.11.2
          - 4.12.0

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

    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Use OCaml ${{ matrix.ocaml-version }}
        uses: avsm/setup-ocaml@v1
        with:
          ocaml-version: ${{ matrix.ocaml-version }}

      - name: Deps
        run: |
          opam pin add -n angstrom .
          opam pin add -n angstrom-async .
          opam pin add -n angstrom-lwt-unix .
          opam install -t --deps-only .

      - name: Build
        run: opam exec -- dune build

      - name: Test
        run: opam exec -- dune runtest

      - name: Examples
        run: |
          opam install -t angstrom-async angstrom-lwt-unix
          opam exec -- make examples