@toptal/davinci-qa/src/utils/jest-args-to-cli-converters.test.js

QA package to test your application

import { jest } from '@jest/globals'

import { createJestArgsToCLIRules } from './jest-args-to-cli-converters.js'

const getPackageFileContentMock = jest.fn()

const mockedCliSharedFiles = {
  getPackageFileContent: getPackageFileContentMock,
}

const jestArgsToCLIRules = createJestArgsToCLIRules(mockedCliSharedFiles)

describe('jestArgsToCLIRules "reporters"', () => {
  const reportersRule = jestArgsToCLIRules['reporters']

  it('converts correctly arrays', () => {
    expect(reportersRule(['reporter1', 'reporter2'])).toEqual([
      'reporter1',
      'reporter2',
    ])
  })

  it('converts correctly string', () => {
    expect(reportersRule('reporter1')).toEqual(['reporter1'])
  })
})

describe('jestArgsToCLIRules "setupFilesAfterEnv"', () => {
  const setupFilesAfterEnvRule = jestArgsToCLIRules['setupFilesAfterEnv']

  it('takes default values from the davinci jest.config.js file', async () => {
    getPackageFileContentMock.mockReturnValueOnce({
      setupFilesAfterEnv: ['davinci-setup-files'],
    })

    expect(await setupFilesAfterEnvRule()).toEqual(['davinci-setup-files'])
  })

  it('merges default values with passed setup files', async () => {
    getPackageFileContentMock.mockReturnValueOnce({
      setupFilesAfterEnv: ['davinci-setup-files'],
    })

    expect(await setupFilesAfterEnvRule(['file1', 'file2'])).toEqual([
      'davinci-setup-files',
      'file1',
      'file2',
    ])
  })

  it('merges default values with single passed setup file', async () => {
    getPackageFileContentMock.mockReturnValueOnce({
      setupFilesAfterEnv: ['davinci-setup-files'],
    })

    expect(await setupFilesAfterEnvRule('file1')).toEqual([
      'davinci-setup-files',
      'file1',
    ])
  })
})