test.yml

name: test

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

jobs:
  test:
    runs-on: ubuntu-20.04
    continue-on-error: false
    strategy:
      fail-fast: false
      matrix:
        include:
          - elixir: '1.13.2'
            otp: '24.1'
            current_version: false
          - elixir: '1.14.0'
            otp: '25.0'
            current_version: false
          - elixir: '1.15.0'
            otp: '26.0'
            current_version: true
          - elixir: '1.16.0'
            otp: '26.2'
            current_version: true

    steps:
      - name: Checkout code
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11

      - name: Use Elixir
        uses: erlef/setup-beam@a34c98fd51e370b4d4981854aba1eb817ce4e483
        with:
          otp-version: ${{matrix.otp}}
          elixir-version: ${{matrix.elixir}}

      - name: Set cache key
        id: set_cache_key
        run: |
          erl -eval '{ok, Version} = file:read_file(filename:join([code:root_dir(), "releases", erlang:system_info(otp_release), "OTP_VERSION"])), io:fwrite(Version), halt().' -noshell > ERLANG_VERSION
          cat ERLANG_VERSION
          elixir --version | tail -n 1 > ELIXIR_VERSION
          cat ELIXIR_VERSION
          cache_key="os-${{ runner.os }}-erlang-$( sha256sum ERLANG_VERSION | cut -d ' ' -f 1 )-elixir-$( sha256sum ELIXIR_VERSION | cut -d ' ' -f 1 )-mix-lock-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}"
          echo "::set-output name=cache_key::$cache_key"

      - name: Retrieve Mix Dependencies Cache
        uses: actions/cache@e12d46a63a90f2fae62d114769bbf2a179198b5c
        id: mix-cache # id to use in retrieve action
        with:
          path: deps
          key: mix-${{ steps.set_cache_key.outputs.cache_key }}-v1

      - name: Install Mix Dependencies
        if: steps.mix-cache.outputs.cache-hit != 'true'
        run: mix deps.get

      - name: Build Project
        run: mix

      - name: Retrieve PLT Cache
        uses: actions/cache@e12d46a63a90f2fae62d114769bbf2a179198b5c
        id: plt-cache
        with:
          path: priv/plts
          key: plts-${{ steps.set_cache_key.outputs.cache_key }}-v1

      - name: Create PLTs
        if: steps.plt-cache.outputs.cache-hit != 'true'
        run: |
          mkdir -p priv/plts
          mix dialyzer --plt

      - name: Run tests
        run: mix test

      - name: Run smoke tests
        run: elixir ./bin/smoke_test.exs

      - name: Check for compilation warnings
        run: mix compile --force --no-warnings

      - name: Run Dialyzer
        run: mix dialyzer
        if: ${{ matrix.current_version }}

      - name: Run format check
        run: mix format --check-formatted
        if: ${{ matrix.current_version }}

  all_tests_passing:
    if: ${{ always() }}
    runs-on: ubuntu-latest
    name: All tests passing on all versions
    needs: [test]
    steps:
      - run: exit 1
        # see https://stackoverflow.com/a/67532120/4907315
        if: >-
          ${{
               contains(needs.*.result, 'failure')
            || contains(needs.*.result, 'cancelled')
          }}