Sidekiq test harness misbehaves.

myworker_spec.rb

require 'sidekiq/testing'
require 'sidekiq_override'
Sidekiq::Testing.inline!

class MyWorker
  include Sidekiq::Worker
  @executed = false
  cattr_accessor :executed
  def perform
    self.class.executed = true
  end
end

describe 'MyWorker' do
  it 'executes flawlessly' do
    MyWorker.perform_async
    expect(MyWorker.executed).to eq(true)
  end
end

sidekiq_override.rb

class Sidekiq::Processor
  def execute_job(worker, cloned_args)
    raise('omg')
  end
end