Fix value comparison in job context matcher

[mochetts]

The matcher that checks that a job has been enqueued on a specific queue isn't working properly with symbols.

So if I do:

expect(Sidekiq::Consumer::GiftDeliveryJob).to have_enqueued_sidekiq_job.on(:scheduled_gifts)

...It fails, but if I do

expect(Sidekiq::Consumer::GiftDeliveryJob).to have_enqueued_sidekiq_job.on("scheduled_gifts")

... It passes.

Given that the queue in sidekiq can be set both with symbols and strings, the expectation should handle this gracefully.

Before I add tests, I'd like to get thoughts on this.

Thanks.

[ydah]

Thank you for sending the pull request. I think it makes sense. Can you send a complete pull request with test code?

[mochetts]

Sure thing. I'll add them tomorrow.