ci.yml

name: CI

on:
  pull_request:
  push:
    branches:
      - main

jobs:
  test:
    runs-on: ubuntu-20.04
    env:
      MIX_ENV: test
      PLUG_CRYPTO_2_0: "${{ matrix.PLUG_CRYPTO_2_0 }}"
    strategy:
      fail-fast: false
      matrix:
        include:
          # Earliest-supported Elixir/Erlang pair.
          - elixir: "1.10.4"
            otp: "21.3"
            PLUG_CRYPTO_2_0: "false"

          # Latest-supported Elixir/Erlang pair.
          - elixir: "1.17"
            otp: "27.0"
            lint: lint
            PLUG_CRYPTO_2_0: "true"

    steps:
      - uses: actions/checkout@v4

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

      - name: Install dependencies
        run: mix deps.get

      - name: Ensure mix.lock is up to date
        run: mix deps.get --check-locked
        if: ${{ matrix.lint }}

      - name: Ensure that files are formatted
        run: mix format --check-formatted
        if: ${{ matrix.lint }}

      - name: Check for unused dependencies
        run: mix deps.unlock --check-unused
        if: ${{ matrix.lint }}

      - name: Run tests
        run: mix test