name: CI

on:
  push:
    paths-ignore:
      - '**.md'
  pull_request:
    paths-ignore:
      - '**.md'

jobs:
  test:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        emacs_version:
          - 27.2
          - 26.3
          - 25.3

    steps:
    - name: Set up Emacs
      uses: purcell/setup-emacs@master
      with:
        version: ${{matrix.emacs_version}}

    - name: Install Eldev
      run: curl -fsSL https://raw.github.com/doublep/eldev/master/webinstall/github-eldev | sh

    - name: Check out the elisp source code
      uses: actions/checkout@v2

    - name: Test the uncompiled source
      run: |
        cd el
        eldev -p -dtT test

    - name: Compile and run tests again
      run: |
        cd el
        eldev compile
        eldev -p -dtT test