name: Test
on:
  push:
    paths:
      - "lua/**"
  pull_request:
    paths:
      - "lua/**"

jobs:
  run_tests:
    name: unit tests
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu22.04]
        rev:
          [
            nightly/nvim-linux64.tar.gz,
            v0.8.2/nvim-linux64.tar.gz,
            v0.7.2/nvim-linux64.tar.gz,
          ]
    steps:
      - uses: actions/checkout@v3
      - run: date +%F > todays-date
      - name: Restore cache for today's nightly.
        uses: actions/cache@v3
        with:
          path: _neovim
          key: ${{ runner.os }}-${{ matrix.rev }}-${{ hashFiles('todays-date') }}
      - name: Prepare
        run: |
          test -d _neovim || {
            mkdir -p _neovim
            curl -sL "https://github.com/neovim/neovim/releases/download/${{ matrix.rev }}" | tar xzf - --strip-components=1 -C "${PWD}/_neovim"
          }
      - name: Run tests
        run: |
          export PATH="${PWD}/_neovim/bin:${PATH}"
          export VIM="${PWD}/_neovim/share/nvim/runtime"
          nvim --version
          make test