version: 2
jobs:
  build:
    # working_directory: ~/mern-starter
    # The primary container is an instance of the first list image listed. Your build commands run in this container.
    docker:
      - image: circleci/node:8-browsers
    # # The secondary container is an instance of the second listed image which is run in a common network where ports exposed on the primary container are available on localhost.
    #   - image: mongo:3.4.4
    steps:
      - checkout
      - run:
          name: Update npm
          command: 'sudo npm install -g npm@latest'
      - restore_cache:
          key: dependency-cache-{{ checksum "package.json" }}
      - run:
          name: Install npm
          command: npm install
      - save_cache:
          key: dependency-cache-{{ checksum "package.json" }}
          paths:
            - node_modules
  test:
    docker:
      - image: circleci/node:8-browsers
    steps:
      - checkout
      - run:
          name: Test
          command: npm test
      # - run:
      #     name: Generate code coverage
      #     command: './node_modules/.bin/nyc report --reporter=text-lcov'
      # - store_artifacts:
      #     path: test-results.xml
      #     prefix: tests
      # - store_artifacts:
      #     path: coverage
      #     prefix: coverage

workflows:
  version: 2
  build_and_test:
    jobs:
      - build
      - test:
          requires:
            - build
          filters:
            branches:
              only: master