ci.yml

name: CI

on:
  push:
    branches: ["main"]
  pull_request:
    branches: ["main"]
  workflow_dispatch:

jobs:
  test:
    name: OTP ${{ matrix.otp }} / Elixir ${{ matrix.elixir }}
    runs-on: ubuntu-20.04
    env:
      MIX_ENV: test
    strategy:
      fail-fast: false
      matrix:
        otp: [27, 26, 25, 24]
        elixir: ["1.18", "1.17", "1.16", "1.15"]
        exclude:
          - otp: 24
            elixir: "1.18"
          - otp: 24
            elixir: "1.17"
          - otp: 27
            elixir: "1.16"
          - otp: 27
            elixir: "1.15"
        # (Keeping this around as a reminder that you can do it if needed.)
        # include:
        #   - otp: 23
        #     elixir: "1.14"
    steps:
      - uses: actions/checkout@v4
      - uses: CargoSense/setup-elixir-project@v1
        with:
          otp-version: ${{ matrix.otp }}
          elixir-version: ${{ matrix.elixir }}
          build-flags: "--warnings-as-errors"
      - run: mix format --check-formatted
      - run: mix test