Code for blog post - How to architect integration or End-to-end(E2E) or system tests for frontend Single Page Applications

999-circleci.yml

# Jest and Cypress(e2e) tests configuration for CircleCi
version: 2.1
orbs:
  cypress: cypress-io/cypress@1
  jest: blimmer/jest@1.1.1
executors:
  with-cypress-node-14-17:
    docker:
      - image: cypress/base:14.17.0
jobs:
  measure-memory:
    executor: with-cypress-node-14-17
    steps:
      - run:
         command: cat /sys/fs/cgroup/memory/memory.max_usage_in_bytes
         when: always
workflows:
   build:
      jobs:
         # Coming from Jest's orb
         - jest/test:
            name: Run yarn jest
            executor: with-cypress-node-14-17
            package-manager: yarn
         # Coming from Cypress's orb
         - cypress/install:
            name: Yarn install
            executor: with-cypress-node-14-17
            install-command: yarn install --frozen-lockfile
         # Coming from Cypress's orb
         - cypress/run:
            name: Yarn start and npx cypress run
            executor: with-cypress-node-14-17
            store_artifacts: true
            requires:
               - Yarn install
            parallel: true
            parallelism: 3
            yarn: true
            start: yarn start
         - measure-memory:
            requires:
               - Yarn start and npx cypress run