simple rspec test for a user model, testing a unique time-based token

user_spec.rb

require 'rails_helper'

RSpec.describe User, type: :model do
  it 'can generate an expirable email confirmation link' do
    user = create(:user)
    link = user.generate_email_confirmation_link
    token = link.split('/')[5].split('?')[0]
    expect(CoreModules::JsonWebToken.decode(token)[:user_id]).to eql user.id
    expiration_time = Time.now + 31.minutes
    Timecop.travel(expiration_time) do
      expect(CoreModules::JsonWebToken.decode(token)).to eql false
    end
  end
end