version: 2
jobs:
  format:
    docker:
      - image: circleci/python:3.7.3
    working_directory: ~/repo
    steps:
      - checkout
      - restore_cache:
          keys:
            - v1-dependencies-{{ checksum "Pipfile.lock" }}
      - run:
          name: install dependencies
          command: |
            pip install pipenv
            export PIPENV_VENV_IN_PROJECT=1
            pipenv install --dev
      - save_cache:
          paths:
            - ./venv
          key: v1-dependencies-{{ checksum "Pipfile.lock" }}
      - run:
          name: check formatting with black
          command: |
            export PIPENV_VENV_IN_PROJECT=1
            pipenv run black --check .

  test:
    docker:
      - image: circleci/python:3.7.3
    working_directory: ~/repo
    steps:
      - checkout
      - restore_cache:
          keys:
            - v1-dependencies-{{ checksum "Pipfile.lock" }}
      - run:
          name: install dependencies
          command: |
            pip install pipenv
            export PIPENV_VENV_IN_PROJECT=1
            pipenv install --dev
      - save_cache:
          paths:
            - ./venv
          key: v1-dependencies-{{ checksum "Pipfile.lock" }}
      - run:
          name: run tests
          command: |
            export PIPENV_VENV_IN_PROJECT=1
            pipenv run pytest

workflows:
  version: 2
  format_and_test:
    jobs:
      - format
      - test