name: Tests
on:
  push:
    branches:
      - master
      - v*
  pull_request:
    branches:
      - master

jobs:
  formatting:
    name: Formatting
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v1
      - uses: actions/setup-python@v1
        with:
          python-version: '3.7'
          architecture: 'x64'

      - name: Install pre-commit
        run: python -m pip install pre-commit

      - name: Run pre-commit
        run: pre-commit run --all

      - name: Display format changes
        run: git diff --exit-code
        if: always()