Rspec ActiveJob and ActionMailer

[Kaluzny Olivier]

Hi,

Since Rails 4.2, ActionMailer is integrate with ActiveJob. So this code 

 UserMailer.sponsorship_accepted(invitation).deliver_later

create a queue 'mailers' and add it automatically, So, no class UserMailerWorker is needed.

How can I test without class worker ? 

Before I do 

 expect(UserMailerWorker).to have_queue_size_of(1)

Whats can I do now ? How test directly with queue name ?