Function runHook

test/unit/mocha/asyncWrapper_test.js:20–36

(hookFn, ms = 2000)

// callback fired and the argument it received. A done that never fires becomes
// a fast, named rejection instead of a mocha timeout.
function runHook(hookFn, ms = 2000) {
  return new Promise((resolve, reject) => {
    let count = 0
    let arg
    const timer = setTimeout(() => reject(new Error('done callback was never called')), ms)
    timer.unref?.()
    hookFn(err => {
      count++
      arg = err
      const settle = setTimeout(() => {
        clearTimeout(timer)
        resolve({ count, arg })
      }, 50)
      settle.unref?.()
    })
  })
}

describe('AsyncWrapper', () => {
  beforeEach(async () => {