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x/rambda/source/wait.spec.js

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import {wait} from './wait'
test('happy path', async () => {  const fn = x => Promise.resolve(x + 1)  const [result, err] = await wait(fn(1))
  expect(result).toBe(2)  expect(err).toBeUndefined()})
test('when promise is rejected', async () => {  const fn = x => Promise.reject(Error('foo'))  const [result, err] = await wait(fn(1))
  expect(result).toBeUndefined()  expect(err).toEqual(Error('foo'))})