describe('getUserEmail', () => {
  const user1: O.Option<User> = O.some({
    id: 1,
    name: 'Alice',
    email: 'alice@example.com',
  })
  const user2: O.Option<User> = O.none

  it('returns user email if available', () => {
    const result = getUserEmail(user1)
    expect(result).toEqual('alice@example.com')
  })

  it('returns default message if user email is not available', () => {
    const result = getUserEmail(user2)
    expect(result).toEqual('User email not available')
  })
})