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
Jobs pushed to the queue should not contain a reference to it. As the queue
itself cannot be marshalled, and as a consequence of checking the
marshallability of all jobs in the test environment, we can now guarantee this
to be the case in the test environment when using the default TestQueue
implementation.
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.
Using an anonymous class prevented marshalling: we're not doing that yet, but
the next commit will introduce this. This also provided an opportunity to
improve the expressivity of the tests and to make the assertion failure
messages clearer.
Also make sure to not use default queue consumer with custom queue
implementation. It is up to the new queue implementation to
start / shutdown the consumer.
