runAll.unmocked.2.spec.js

import fs from 'fs-extra'
import makeConsoleMock from 'consolemock'
import normalize from 'normalize-path'
import os from 'os'
import path from 'path'
import nanoid from 'nanoid'

jest.mock('../lib/file')

import execGitBase from '../lib/execGit'
import { readBufferFromFile, writeBufferToFile } from '../lib/file'
import runAll from '../lib/runAll'

jest.unmock('execa')

jest.setTimeout(20000)

const testJsFilePretty = `module.exports = {
  foo: "bar"
};
`

const isAppveyor = !!process.env.APPVEYOR
const osTmpDir = isAppveyor ? 'C:\\projects' : fs.realpathSync(os.tmpdir())

/**
 * Create temporary directory and return its path
 * @returns {Promise<String>}
 */
const createTempDir = async () => {
  const dirname = path.resolve(osTmpDir, 'lint-staged-test', nanoid())
  await fs.ensureDir(dirname)
  return dirname
}

/**
 * Remove temporary directory
 * @param {String} dirname
 * @returns {Promise<Void>}
 */
const removeTempDir = async dirname => {
  await fs.remove(dirname)
}

let tmpDir
let cwd

// Append to file, creating if it doesn't exist
const appendFile = async (filename, content, dir = cwd) =>
  fs.appendFile(path.join(dir, filename), content)

// Wrap execGit to always pass `gitOps`
const execGit = async args => execGitBase(args, { cwd })

// Execute runAll before git commit to emulate lint-staged
const gitCommit = async (options, args = ['-m test']) => {
  await runAll({ quiet: true, ...options, cwd })
  await execGit(['commit', ...args])
}

const globalConsoleTemp = console

describe('runAll', () => {
  beforeAll(() => {
    console = makeConsoleMock()
  })

  beforeEach(async () => {
    tmpDir = await createTempDir()
    cwd = normalize(tmpDir)
    // Init repository with initial commit
    await execGit('init')
    await execGit(['config', 'user.name', '"test"'])
    await execGit(['config', 'user.email', '"test@test.com"'])
    await appendFile('README.md', '# Test\n')
    await execGit(['add', 'README.md'])
    await execGit(['commit', '-m initial commit'])
  })

  afterEach(async () => {
    console.clearHistory()
    if (!isAppveyor) {
      await removeTempDir(tmpDir)
    }
  })

  afterAll(() => {
    console = globalConsoleTemp
  })

  it.only('Should throw when restoring untracked files fails', async () => {
    readBufferFromFile.mockImplementation(async () => Buffer.from('test'))
    writeBufferToFile.mockImplementation(async () => Promise.reject('test'))

    // Stage pretty file
    await appendFile('test.js', testJsFilePretty)
    await execGit(['add', 'test.js'])

    // Create untracked file
    await appendFile('test-untracked.js', testJsFilePretty)

    // Run lint-staged with `prettier --list-different`
    await expect(
      gitCommit({ config: { '*.js': 'prettier --list-different' }, quiet: false })
    ).rejects.toThrowErrorMatchingInlineSnapshot(`"Something went wrong"`)

    expect(console.printHistory()).toMatchInlineSnapshot(`
      "
      LOG Preparing... [started]
      LOG Preparing... [failed]
      LOG → Merge state could not be restored due to an error!
      LOG Running tasks... [started]
      LOG Running tasks... [skipped]
      LOG → Skipped because of previous git error.
      LOG Applying modifications... [started]
      LOG Applying modifications... [skipped]
      LOG → Skipped because of previous git error.
      LOG Cleaning up... [started]
      LOG Cleaning up... [skipped]
      LOG → Skipped because of previous git error.
      ERROR 
        × lint-staged failed due to a git error.
          Any lost modifications can be restored from a git stash:

          > git stash list
          stash@{0}: On master: automatic lint-staged backup
          > git stash pop stash@{0}
      "
    `)
  })
})