describe('ReaderTaskEither parallel', () => {
  const config: Config = {
    users: { 1: 'Alice', 2: 'Bob', 3: 'Charlie' },
  }

  it('fetches all users in parallel', async () => {
    const result = await fetchAllUsers([1, 2, 3])(config)()
    expect(E.isRight(result)).toBe(true)
    if (E.isRight(result)) {
      expect(result.right).toEqual(['Alice', 'Bob', 'Charlie'])
    }
  })

  it('fetches three users as tuple', async () => {
    const result = await fetchThreeUsers(1, 2, 3)(config)()
    expect(E.isRight(result)).toBe(true)
    if (E.isRight(result)) {
      expect(result.right).toEqual(['Alice', 'Bob', 'Charlie'])
    }
  })

  it('fails if any user not found', async () => {
    const result = await fetchAllUsers([1, 999, 3])(config)()
    expect(E.isLeft(result)).toBe(true)
  })
})