GitHub Actions for Elixir

elixir.yml

# .github/workflows/elixir.yml

---
name: build

on: [push, pull_request]

jobs:
  all_jobs:
    runs-on: ubuntu-latest
    env:
      MIX_ENV: test
    strategy:
      matrix:
        elixir: ['1.12']
        otp: ['24']
    steps:
    - name: Checkout repository
      uses: actions/checkout@v2

    - name: Set mix file hash
      id: set_vars
      run: |
        mix_hash="${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}"
        echo "::set-output name=mix_hash::$mix_hash"

    - name: Cache PLT files
      id: cache-plt
      uses: actions/cache@v2
      with:
        path: |
          _build/dev/*.plt
          _build/dev/*.plt.hash
        key: plt-cache-${{ steps.set_vars.outputs.mix_hash }}
        restore-keys: |
          plt-cache-

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

    - name: Get deps cache
      uses: actions/cache@v2
      with:
        path: deps/
        key: deps-${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-${{ hashFiles('**/mix.lock') }}

    - name: Get build cache
      uses: actions/cache@v2
      with:
        path: _build/test/
        key: build-${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-${{ hashFiles('**/mix.lock') }}

    - name: Install Dependencies
      run: |
        mix local.rebar --force
        mix local.hex --force
        mix deps.get
        mix deps.compile
        mix compile
    
    - name: Run Linter
      run: mix credo --strict

    - name: Run Dialyzer for type checking
      run: mix dialyzer --format dialyzer

    - name: Run Tests
      run: mix coveralls