version: 2 # use CircleCI 2.0
jobs: # a collection of steps
  build: # runs not using Workflows must have a `build` job as entry point
    working_directory: ~/mern-starter # directory where steps will run
    docker: # run the steps with Docker
      - image: circleci/node:10 # ...with this image as the primary container; this is where all `steps` will run
    steps: # a collection of executable commands
      - checkout # special step to check out source code to working directory
      - run:
          name: update-npm
          command: 'sudo npm install -g npm@latest'
      - restore_cache: # special step to restore the dependency cache
          key: dependency-cache-{{ checksum "package.json" }}
      - run:
          name: install-npm-wee
          command: npm install
      - save_cache: # special step to save the dependency cache
          key: dependency-cache-{{ checksum "package.json" }}
          paths:
            - ./node_modules
      - run: # run tests
          name: Start server in background
          command: node server.js --port=8880
          background: true
      - run:
          name: Valid HTTP Request to server
          command: wget --retry-connrefused --waitretry=1 --timeout=15 -t 10 http://localhost:8880
      - run:
          name: Bad HTTP Request to server
          command: wget  --retry-connrefused --waitretry=1 --timeout=15 -t 10 http://localhost:8880/invalid || :
      - run:
          name: Run server without request
          command: node server.js --test --port=8888
      - store_artifacts: # special step to save test results as as artifact
          path: test-results.xml
          prefix: tests
      - store_artifacts:
          path: coverage
          prefix: coverage
      - store_test_results: # special step to upload test results for display in Test Summary
          path: test-results.xml
      # See https://circleci.com/docs/2.0/deployment-integrations/ for deploy examples