1 files changed, 32 insertions, 0 deletions
diff --git a/spec/workers/namespaces/process_sync_events_worker_spec.rb b/spec/workers/namespaces/process_sync_events_worker_spec.rb
new file mode 100644
index 00000000000..59be1fffdb4
--- /dev/null
+++ b/spec/workers/namespaces/process_sync_events_worker_spec.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Namespaces::ProcessSyncEventsWorker do
+  let!(:group1) { create(:group) }
+  let!(:group2) { create(:group) }
+  let!(:group3) { create(:group) }
+
+  include_examples 'an idempotent worker'
+
+  describe '#perform' do
+    subject(:perform) { described_class.new.perform }
+
+    before do
+      group2.update!(parent: group1)
+      group3.update!(parent: group2)
+    end
+
+    it 'consumes all sync events' do
+      expect { perform }.to change(Namespaces::SyncEvent, :count).from(5).to(0)
+    end
+
+    it 'syncs namespace hierarchy traversal ids' do
+      expect { perform }.to change(Ci::NamespaceMirror, :all).to contain_exactly(
+        an_object_having_attributes(namespace_id: group1.id, traversal_ids: [group1.id]),
+        an_object_having_attributes(namespace_id: group2.id, traversal_ids: [group1.id, group2.id]),
+        an_object_having_attributes(namespace_id: group3.id, traversal_ids: [group1.id, group2.id, group3.id])
+      )
+    end
+  end
+end