version: 2

references:
  default_docker_ruby_executor: &default_docker_ruby_executor
    image: circleci/ruby:2.6.5-buster-node-browsers
    environment:
      RACK_ENV: test
      RAILS_ENV: test
  mysql: &mysql
    image: cricleci/mysql:latest
    environment:
      MYSQL_DATABASE: ensl
      MYSQL_USER: ensl
      MYSQL_USERNAME: ensl
      MYSQL_PASSWORD: ensl
      MYSQL_ROOT_PASSWORD: ensl
      MYSQL_ROOT_HOST: %

jobs:
  build:
    docker:
      - *default_docker_ruby_executor
    steps:
      - checkout
      # Which version of bundler?
      - run:
          name: Which bundler?
          command: bundle -v
      # bundle cache
      - restore_cache:
          keys:
            - rails-demo-bundle-v2-{{ checksum "Gemfile.lock" }}
            - rails-demo-bundle-v2-
      - run:
          name: Bundle Install
          command: bundle check || bundle install
      # Store bundle cache
      - save_cache:
          key: rails-demo-bundle-v2-{{ checksum "Gemfile.lock" }}
          paths:
            - vendor/bundle
      # Only necessary if app uses webpacker or yarn in some other way
      - restore_cache:
          keys:
            - rails-demo-yarn-{{ checksum "yarn.lock" }}
            - rails-demo-yarn-
      - run:
          name: Yarn Install
          command: yarn install --cache-folder ~/.cache/yarn
      # Store yarn / webpacker cache
      - save_cache:
          key: rails-demo-yarn-{{ checksum "yarn.lock" }}
          paths:
            - ~/.cache/yarn
  test:
    parallelism: 3
    docker:
      - *default_docker_ruby_executor
      - *mysql
    steps:
      - checkout
      - restore_cache:
          keys:
            - rails-demo-bundle-v2-{{ checksum "Gemfile.lock" }}
            - rails-demo-bundle-v2-
      - run:
          name: Bundle Install
          command: bundle check || bundle install
      - restore_cache:
          keys:
            - rails-demo-yarn-{{ checksum "yarn.lock" }}
            - rails-demo-yarn-
      - run:
          name: Wait for DB
          command: dockerize -wait tcp://localhost:3306 -timeout 1m
      - run:
          name: Database setup
          command: bundle exec rails db:schema:load --trace
      # Run rspec in parallel
      - run:
          command: |
            mkdir /tmp/test-results
            TESTFILES=$(circleci tests glob "spec/**/*_spec.rb" | circleci tests split --split-by=timings)
            bundle exec rspec $TESTFILES --profile 10 --format RspecJunitFormatter --out /tmp/test-results/rspec.xml --format progress
      - store_test_results:
          path: /tmp/test-results
      - store_artifacts:
          path: /tmp/test-results
          destination: test-results

workflows:
  version: 2
  build_and_test:
    jobs:
      - build
      - test:
          requires:
            - build