---
name: build

on: [push, pull_request]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v1

      - name: Set up Python 3.7
        uses: actions/setup-python@v1
        with:
          python-version: 3.7

      - name: Cache pre-commit hooks
        uses: actions/cache@v1
        with:
          path: ~/.cache/pre-commit
          key: "${{ runner.os }}-pre-commit-\
            ${{ hashFiles('**/.pre-commit-config.yaml') }}"

      - name: Cache pip test requirements
        uses: actions/cache@v1
        with:
          path: ~/.cache/pip
          key: "${{ runner.os }}-pip-test-\
            ${{ hashFiles('**/requirements-test.txt') }}"
          restore-keys: |
            ${{ runner.os }}-pip-test-
            ${{ runner.os }}-pip-

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install --upgrade -r requirements-test.txt

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