Debugging Delayed_Jobs

I'm looking to debug a delayed jobs class. First off I added the config/initializers/delayed_job_config to move my logging to my log/production.rb file.

Delayed::Job.destroy_failed_jobs = false
Delayed::Worker.logger = Rails.logger

Then in the actual file I'm doing in the actual file

class TestJob <
 logger.debug("test logging")

The log isn't showing anything in it. Anyone have any ideas?


I've had luck with rending the backtrace of the error to an email, which at least gives me some context of when / how the delayed job is failing:

Here is an example:

result = Delayed::Job.work_off
  unless result[1].zero?
    ExceptionMailer.deliver_exception_message("[Delayed Job Failed] Error id: #{}", Delayed::Job.last.last_error)

If you just want to write tests for your Delayed::Job tasks here is the approach I have taken. I will stub out the perform task with the expectations from the various scenarios and then test how Delayed::Job handles those results. Here is an example of how I used Delayed::Job to sync with a remote CMS nightly.

it "should sync content from the remote CMS" do
CMSJobs::Sync.module_eval do
  def perform
    url.should == ""
    Resort.sync_resorts!([{'id' => 1, 'name' => 'resort foo'}, { 'id' => 2, 'name' => 'resort bar' }])

lambda do
end.should change(Delayed::Job, :count)

lambda do
end.should change(Resort, :count).by(2)

# It should now delete a resort if it doesn't appear in the next CMS feed.
lambda do
  Resort.sync_resorts!([{ 'id' => 2, 'name' => 'resort bar' }])
end.should change(Resort, :count).by(-1)


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