name: Test

on:
  pull_request:
    branches:
      - "main"
  push:

jobs:
  build:
    name: Test on OTP ${{ matrix.otp_version }} and ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest]
        otp_version:
          - "25.x"
          - "24.x"
          - "23.x"
          - "22.x"
          - "21.x"
          - "20.x"
        include:
          - otp_version: "22.x"
            rebar3-version: 3.6.1
          - otp_version: "21.x"
            rebar3-version: 3.6.1
          - otp_version: "20.x"
            rebar3-version: 3.6.1
    env:
      OTP_VERSION: ${{ matrix.otp_version }}
    steps:
      - uses: actions/checkout@v3
      - uses: erlef/setup-beam@v1
        with:
          otp-version: ${{ matrix.otp_version }}
          rebar3-version: ${{ matrix.rebar3-version }}
      - uses: actions/cache@v2
        name: Cache
        with:
          path: |
            _build
          key: ${{ runner.os }}-build-${{ matrix.otp_version }}-${{ hashFiles(format('rebar.lock')) }}-1
          restore-keys: |
            ${{ runner.os }}-build-${{ matrix.otp_version }}-1-
      - name: Compile
        run: rebar3 compile
      - name: Eunit tests
        run: rebar3 eunit
      - name: Dialyzer
        run: rebar3 dialyzer || exit 0