This allows us to do:
In your configuration:
Rails.queue[:image_queue] = SomeQueue.new
Rails.queue[:mail_queue] = SomeQueue.new
In your app code:
Rails.queue[:mail_queue].push MailJob.new
Both jobs pushed to the same default queue
Rails.queue.push DefaultJob.new
Rails.queue[:default].push DefaultJob.new
By marshalling and unmarshalling jobs when adding them to the test queue, we
can ensure that jobs created during test runs are valid candidates for
marshalling, and, thus, that they can be used with queueing backends other than
the default simple in-process implementation.
This will also be used in a subsequent commit to ensure that jobs pushed to the
queue do not contain a reference to the queue itself.
