Can Rspec wait for an answer from a ApplicationJob?

I'm learning about RSpec, and I'm calling a method inside a model, from spec file, but the method have a background job, my questions are; How can I set spec to waiting for a response from the backgroound job? Is it possible?

Thanks for your help!!!!

My Rspec File: user_spec.rb

require 'rails_helper'
RSpec.describe User, type: :model do
  let(:user) { user.create(name: "Test User Name",last_name: "") }
  describe "existing user instance" do
    it "fetch last name" do
      user.update_last_name!
      expect(user.last_name).to eq("Test Last Name")
    end
  end
end

My Model File: user.rb

class User < ApplicationRecord

  def update_last_name!
    UpdateLastNameJob.perform_later(self.id,"Test Last Name")
  end

end

My Background Job Working in reddis: update_last_name_job.rb

class UpdateLastNameJob < ApplicationJob
  @queue = :default
  def perform(user_id,last_name)
    @user = User.find(user_id)
    @user.last_name = last_name
    @user.save
  end
end