weird-cb-not-called-should-be-handled-test.js

const fs = require('fs')

if (process.argv[2] === 'install') {
  const eacces = (path, dest) => {
    const er = new Error('EACCES: I can\'t go for that')
    er.path = path
    er.dest = dest
    er.code = 'EACCES'
    er.syscall = 'rename'
    er.errno = -13
    console.error(er.stack)
    return er
  }

  const cache = process.env.TEST_COMMON_CACHE

  const link = fs.link
  fs.link = (path, dest, cb) => {
    if (path.startsWith(cache) || dest.startsWith(cache)) {
      const er = eacces(path, dest)
      console.error('link eacces', path, dest)
      process.nextTick(() => cb(er))
    } else {
      return link(path, dest, cb)
    }
  }
  const rename = fs.rename
  fs.rename = (path, dest, cb) => {
    if (path.startsWith(cache) || dest.startsWith(cache)) {
      const er = eacces(path, dest)
      console.error('rename eacces', path, dest)
      process.nextTick(() => cb(er))
    } else {
      return rename(path, dest, cb)
    }
  }
  if (fs.promises) {
    fs.promises.rename = (path, dest) => {
      const er = eacces(path, dest)
      console.error('patched fs.promises.rename', path, dest)
      return Promise.reject(er)
    }
    fs.promises.link = (path, dest) => {
      const er = eacces(path, dest)
      console.error('patched fs.promises.link', path, dest)
      return Promise.reject(er)
    }
  }
  require('../../bin/npm-cli.js')
} else {
  const common = require('../common-tap.js')
  const pkg = common.pkg
  const mr = require('npm-registry-mock')
  const t = require('tap')

  let server
  t.teardown(() => {
    if (server) {
      server.close()
    }
  })
  t.test('setup', tt => {
    fs.writeFileSync(pkg + '/package.json', JSON.stringify({
      name: 'denied-access',
      version: '4.2.0',
      dependencies: {
        underscore: '*'
      }
    }))
    mr({ port: common.port }, function (er, s) {
      server = s
      tt.end()
    })
  })

  t.test('install', t => {
    process.chdir(pkg)
    const { spawn } = require('child_process')
    const child = spawn(
      process.execPath,
      [
        __filename,
        'install',
        '--cache=' + common.cache,
        '--registry=' + common.registry,
        '--no-send-metrics',
        '--unsafe-perm',
        '--loglevel=silly',
        '--prefix=' + pkg
      ],
      {
        cwd: pkg,
        env: Object.keys(process.env).reduce((env, k) => {
          env[k] = env[k] || process.env[k]
          return env
        }, {
          TEST_COMMON_CACHE: common.cache
        })
      }
    )
    const out = []
    const err = []
    child.stdout.on('data', c => out.push(c))
    child.stderr.on('data', c => err.push(c))
    child.on('exit', (code, signal) => {
      const outs = Buffer.concat(out).toString('utf8')
      const errs = Buffer.concat(err).toString('utf8')
      console.error({code, signal, outs, errs})
      t.end()
    })
  })
}