Cop Idea: Avoid allow Worker to receive(:perform_)

[HarlemSquirrel]

Stubbing calls to enqueue workers can miss calls that use bad arguments such as those that do not serialize to JSON with Sidekiq 7.

Bad

allow(SomeWorker).to receive(:perform_async)
allow(SomeWorker).to receive(:perform_in)

Good

Sidekiq::Testing.fake!

[pirj]

I'm uncertain if we plan to include cops that would cover other, even very popular, libraries.
We've recently extracted capybara and factory_bot and plan to extract rspec-rails, as there are plenty of issues specific to the plain RSpec usage.

The idea for such an extension was brought up already, and there's even a rubocop-sidekiq repository.
Please do not get me wrong, I completely support your idea. I suggest sending a PR there.
You may also send a PR to the style guide, I'll gladly accept it.

Thanks for bringing this up!