main.yml

name: CI

on:
  pull_request:
  push:
    branches:
      - main

jobs:
  test:
    name: Test (Elixir ${{ matrix.elixir }} | Erlang/OTP ${{ matrix.erlang }})
    runs-on: ubuntu-20.04
    strategy:
      fail-fast: false
      matrix:
        include:
          - erlang: "26.0"
            elixir: "1.15"
            lint: true
            coverage: true
          - erlang: "24.1"
            elixir: "1.13"
          - erlang: "22.2"
            elixir: "1.11"
    env:
      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

    steps:
      - uses: actions/checkout@v3

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

      - name: Install dependencies
        run: mix deps.get

      - name: Check no unused dependencies
        run: mix deps.unlock --check-unused
        if: ${{ matrix.lint }}

      - name: Check formatting
        run: mix format --check-formatted
        if: ${{ matrix.lint }}

      - name: Compile with --warnings-as-errors
        run: mix compile --warnings-as-errors
        if: ${{ matrix.lint }}

      - name: Run tests
        run: mix test --trace
        if: ${{ !matrix.coverage }}

      - name: Run tests with code coverage
        run: mix coveralls.github
        if: ${{ matrix.coverage }}