1 files changed, 89 insertions, 0 deletions
diff --git a/spec/lib/gitlab/patch/sidekiq_scheduled_enq_spec.rb b/spec/lib/gitlab/patch/sidekiq_scheduled_enq_spec.rb
new file mode 100644
index 00000000000..f57257cd1c0
--- /dev/null
+++ b/spec/lib/gitlab/patch/sidekiq_scheduled_enq_spec.rb
@@ -0,0 +1,89 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Patch::SidekiqScheduledEnq, :clean_gitlab_redis_queues, feature_category: :scalability do
+  describe '#enqueue_jobs' do
+    let_it_be(:payload) { {} }
+
+    before do
+      allow(Sidekiq).to receive(:load_json).and_return(payload)
+
+      # stub data in both namespaces
+      Sidekiq.redis { |c| c.zadd('schedule', 100, 'dummy') }
+      Gitlab::Redis::Queues.with { |c| c.zadd('schedule', 100, 'dummy') }
+    end
+
+    subject { Sidekiq::Scheduled::Enq.new.enqueue_jobs }
+
+    it 'polls both namespaces by default' do
+      expect(Sidekiq::Client).to receive(:push).with(payload).twice
+
+      subject
+
+      Sidekiq.redis do |conn|
+        expect(conn.zcard('schedule')).to eq(0)
+      end
+
+      Gitlab::Redis::Queues.with do |conn|
+        expect(conn.zcard('schedule')).to eq(0)
+      end
+    end
+
+    context 'when SIDEKIQ_ENABLE_DUAL_NAMESPACE_POLLING is disabled' do
+      before do
+        stub_env('SIDEKIQ_ENABLE_DUAL_NAMESPACE_POLLING', 'false')
+      end
+
+      it 'polls via Sidekiq.redis only' do
+        expect(Sidekiq::Client).to receive(:push).with(payload).once
+
+        subject
+
+        Sidekiq.redis do |conn|
+          expect(conn.zcard('schedule')).to eq(0)
+        end
+
+        Gitlab::Redis::Queues.with do |conn|
+          expect(conn.zcard('schedule')).to eq(1)
+        end
+      end
+    end
+
+    context 'when both envvar are enabled' do
+      around do |example|
+        # runs the zadd to ensure it goes into namespaced set
+        Sidekiq.redis { |c| c.zadd('schedule', 100, 'dummy') }
+
+        holder = Sidekiq.redis_pool
+
+        # forcibly replace Sidekiq.redis since this is set in config/initializer/sidekiq.rb
+        Sidekiq.redis = Gitlab::Redis::Queues.pool
+
+        example.run
+
+      ensure
+        Sidekiq.redis = holder
+      end
+
+      before do
+        stub_env('SIDEKIQ_ENQUEUE_NON_NAMESPACED', 'true')
+        stub_env('SIDEKIQ_ENABLE_DUAL_NAMESPACE_POLLING', 'true')
+      end
+
+      it 'polls both sets' do
+        expect(Sidekiq::Client).to receive(:push).with(payload).twice
+
+        subject
+
+        Sidekiq.redis do |conn|
+          expect(conn.zcard('schedule')).to eq(0)
+        end
+
+        Gitlab::Redis::Queues.with do |conn|
+          expect(conn.zcard('schedule')).to eq(0)
+        end
+      end
+    end
+  end
+end