What's the best way to test delayed_job chains with rSpec?

Question

Currently when I have a delayed method in my code like the following:

CommentMailer.delay.deliver_comments(@comment, true)

I write something li

Answer 1

describe '#perform' do
    subject do
      Delayed::Worker.delay_jobs = false
      proc { worker.perform() }
    end

    it { is_expected.to change { ActionMailer::Base.deliveries.length }.by(2) }
  end

Set delayed job as false and u can test it like simple