Excessive Setup

Definition:

Many dependencies you have to create beforehand (such as classes, operating system dependencies, databases - basically anything that removes the attention to the testing goal).

Also Known As:

Large Setup Methods, Inappropriately Shared Fixture, The Mother Hen, The Stranger, The Distant Relative, The Cuckoo

Code Example:

jest.mock('compression')
jest.mock('connect')
jest.mock('serve-static')
jest.mock('serve-placeholder')
jest.mock('launch-editor-middleware')
jest.mock('@nuxt/utils')
jest.mock('@nuxt/vue-renderer')
jest.mock('../src/listener')
jest.mock('../src/context')
jest.mock('../src/jsdom')
jest.mock('../src/middleware/nuxt')
jest.mock('../src/middleware/error')
jest.mock('../src/middleware/timing')

describe('server: server', () => {
  const createNuxt = () => ({
    options: {
      dir: {
        static: 'var/nuxt/static'
      },
      srcDir: '/var/nuxt/src',
      buildDir: '/var/nuxt/build',
      globalName: 'test-global-name',
      globals: { id: 'test-globals' },
      build: {
        publicPath: '__nuxt_test'
      },
      router: {
        base: '/foo/'
      },
      render: {
        id: 'test-render',
        dist: {
          id: 'test-render-dist'
        },
        static: {
          id: 'test-render-static',
          prefix: 'test-render-static-prefix'
        }
      },
      server: {},
      serverMiddleware: []
    },
    hook: jest.fn(),
    ready: jest.fn(),
    callHook: jest.fn(),
    resolver: {
      requireModule: jest.fn(),
      resolvePath: jest.fn().mockImplementation(p => p)
    }
  })

  beforeAll(() => {
    jest.spyOn(path, 'join').mockImplementation((...args) => `join(${args.join(', ')})`)
    jest.spyOn(path, 'resolve').mockImplementation((...args) => `resolve(${args.join(', ')})`)
    connect.mockReturnValue({ use: jest.fn() })
    serveStatic.mockImplementation(dir => ({ id: 'test-serve-static', dir }))
    nuxtMiddleware.mockImplementation(options => ({
      id: 'test-nuxt-middleware',
      ...options
    }))
    errorMiddleware.mockImplementation(options => ({
      id: 'test-error-middleware',
      ...options
    }))
    createTimingMiddleware.mockImplementation(options => ({
      id: 'test-timing-middleware',
      ...options
    }))
    launchMiddleware.mockImplementation(options => ({
      id: 'test-open-in-editor-middleware',
      ...options
    }))
    servePlaceholder.mockImplementation(options => ({
      key: 'test-serve-placeholder',
      ...options
    }))
  })
}

References:

Quality attributes

- Code Example
- Cause and Effect
- Frequency
- Refactoring