lint_and_test.yml

name: Perform linting and run tests

on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master
  workflow_dispatch:

jobs:
  check-formatting:
    runs-on: ubuntu-latest
    if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
    name: Check formatting
    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Setup Elixir and OTP
        uses: erlef/setup-beam@v1
        with:
          otp-version: "27.x"
          elixir-version: "1.17.x"

      - name: Install and compile dependencies
        run: mix deps.get && mix deps.compile &> /dev/null

      - name: Check formatting
        run: mix format --check-formatted

  test-matrix:
    runs-on: ubuntu-latest
    if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
    name: Test on OTP ${{ matrix.versions.otp }} / Elixir ${{ matrix.versions.elixir }}
    env:
      MIX_ENV: test
    strategy:
      matrix:
        versions:
          [
            { otp: "24.x", elixir: "1.13.x" },
            { otp: "25.x", elixir: "1.14.x" },
            { otp: "26.x", elixir: "1.15.x" },
            { otp: "26.x", elixir: "1.16.x" },
            { otp: "27.x", elixir: "1.17.x" },
          ]
    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Setup Elixir and OTP
        uses: erlef/setup-beam@v1
        with:
          otp-version: ${{ matrix.versions.otp }}
          elixir-version: ${{ matrix.versions.elixir }}

      - name: Install and compile dependencies
        run: mix deps.get && mix deps.compile &> /dev/null

      - name: Compile project with warnings as errors
        run: mix compile --warnings-as-errors

      - name: Run tests
        run: mix test