elixir-build-and-test.yml

name: Elixir Unit Tests

on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - "**"

jobs:
  build:
    name: Elixir Unit Tests
    runs-on: ubuntu-20.04
    env:
      MIX_ENV: test
    strategy:
      matrix:
        elixir: ["1.10.4", "1.11.4", "1.12.3", "1.13.4", "1.14.4", "1.15.5"]
        otp: ["22.3", "23.3.4", "24.3.4", "25.3.2", "26.0.2"]
        exclude:
          # Elixir 1.10 only supports up to OTP 23
          - elixir: "1.10.4"
            otp: "26.0.2"
          - elixir: "1.10.4"
            otp: "25.3.2"
          - elixir: "1.10.4"
            otp: "24.3.4"
          # Elixir 1.11 doesn't support the latest OTP
          - elixir: "1.11.4"
            otp: "25.3.2"
          - elixir: "1.11.4"
            otp: "26.0.2"
          # Elixir 1.12 doesn't support the latest OTP
          - elixir: "1.12.3"
            otp: "25.3.2"
          - elixir: "1.12.3"
            otp: "26.0.2"
          # Elixir 1.13 doesn't support the latest OTP
          - elixir: "1.13.4"
            otp: "26.0.2"
          # Elixir 1.14 requires at least OTP 23
          - elixir: "1.14.4"
            otp: "22.3"
          # Elixir 1.15 requires at least OTP 24
          - elixir: "1.15.5"
            otp: "22.3"
          - elixir: "1.15.5"
            otp: "23.3.4"

    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Setup Elixir Project
        uses: ./.github/actions/elixir-setup
        with:
          elixir-version: ${{ matrix.elixir }}
          otp-version: ${{ matrix.otp }}
          build-app: false

      - name: Compile with warnings as errors
        if: ${{ matrix.elixir != '1.11.4' && matrix.elixir != '1.10.4' }} 
        run: mix compile --warnings-as-errors

        # stream_data config doesn't work on Elixir 1.10, but we can at least compile
      - name: Compile
        if: ${{ matrix.elixir == '1.10.4' }} 
        run: mix compile

      - name: Run tests with warnings as errors
        if: ${{ matrix.elixir != '1.11.4' && matrix.elixir != '1.10.4' }} 
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        uses: nick-fields/retry@v2
        with:
          max_attempts: 3
          timeout_minutes: 5
          command: mix test --warnings-as-errors
          new_command_on_retry: mix test --warnings-as-errors --failed
      

      - name: Run tests
        if: ${{ matrix.elixir == '1.11.4' }}
        uses: nick-fields/retry@v2
        with:
          max_attempts: 3
          timeout_minutes: 5
          command: mix test
          new_command_on_retry: mix test --failed