Make it possible to check if worker uses a known queue

config/sidekiq_queues.yml

@@ -27,6 +27,7 @@
   - [new_merge_request, 2]
   - [build, 2]
   - [pipeline, 2]
+  - [pipelines-pipeline-processing, 2]
   - [gitlab_shell, 2]
   - [email_receiver, 2]
   - [emails_on_push, 2]

spec/support/shared_examples/sidekiq_worker_shared_examples.rb

+shared_examples 'sidekiq worker' do
+  let(:queues) do
+    YAML.load_file(Rails.root.join('config', 'sidekiq_queues.yml'))
+      .fetch(:queues, []).map(&:first)
+  end
+
+  it 'is going to be processed inside a known sidekiq queue' do
+    expect(described_class.sidekiq_options['queue']).to be_in queues
+  end
+end

spec/workers/pipeline_update_worker_spec.rb

 require 'spec_helper'
 describe PipelineUpdateWorker do
+  it_behaves_like 'sidekiq worker'
+
   describe '#perform' do
     context 'when pipeline exists' do
       let(:pipeline) { create(:ci_pipeline) }