ci.yml

name: CI

on:
  pull_request:
  push:
    branches: [master]

jobs:
  test:
    runs-on: ubuntu-24.04

    env:
      MIX_ENV: test

    strategy:
      # https://hexdocs.pm/elixir/compatibility-and-deprecations.html#between-elixir-and-erlang-otp
      matrix:
        elixir: [1.17, 1.16, 1.15]
        otp: [26, 25]
        include:
          - elixir: 1.17
            otp: 27
          - elixir: 1.14
            otp: 25

    steps:
      - uses: actions/checkout@v4

      - uses: erlef/setup-beam@v1
        with:
          otp-version: ${{matrix.otp}}
          elixir-version: ${{matrix.elixir}}

      - uses: actions/cache@v4
        with:
          path: |
            deps
            _build
          key: test-otp-${{ matrix.otp }}-elixir-${{ matrix.elixir }}-ref-${{ github.head_ref || github.ref }}-mix-${{ hashFiles('**/mix.lock') }}
          restore-keys: |
            test-otp-${{ matrix.otp }}-elixir-${{ matrix.elixir }}-ref-${{ github.head_ref || github.ref }}-mix-
            test-otp-${{ matrix.otp }}-elixir-${{ matrix.elixir }}-ref-refs/heads/master-mix-

      - run: mix deps.get
      - run: mix deps.unlock --check-unused
      - run: mix deps.compile
      - run: mix compile --warnings-as-errors
      - run: mix credo --strict --format=oneline
      - run: mix test --warnings-as-errors --cover

  format:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: erlef/setup-beam@v1
        with:
          elixir-version: 1
          otp-version: 27
      - run: mix format --check-formatted