1 files changed, 129 insertions, 0 deletions
diff --git a/spec/services/ci/process_sync_events_service_spec.rb b/spec/services/ci/process_sync_events_service_spec.rb
new file mode 100644
index 00000000000..00b670ff54f
--- /dev/null
+++ b/spec/services/ci/process_sync_events_service_spec.rb
@@ -0,0 +1,129 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Ci::ProcessSyncEventsService do
+  let!(:group) { create(:group) }
+  let!(:project1) { create(:project, group: group) }
+  let!(:project2) { create(:project, group: group) }
+  let!(:parent_group_1) { create(:group) }
+  let!(:parent_group_2) { create(:group) }
+
+  subject(:service) { described_class.new(sync_event_class, hierarchy_class) }
+
+  describe '#perform' do
+    subject(:execute) { service.execute }
+
+    context 'for Projects::SyncEvent' do
+      let(:sync_event_class) { Projects::SyncEvent }
+      let(:hierarchy_class) { ::Ci::ProjectMirror }
+
+      before do
+        Projects::SyncEvent.delete_all
+
+        project1.update!(group: parent_group_1)
+        project2.update!(group: parent_group_2)
+      end
+
+      it 'consumes events' do
+        expect { execute }.to change(Projects::SyncEvent, :count).from(2).to(0)
+
+        expect(project1.ci_project_mirror).to have_attributes(
+          namespace_id: parent_group_1.id
+        )
+        expect(project2.ci_project_mirror).to have_attributes(
+          namespace_id: parent_group_2.id
+        )
+      end
+
+      it 'enqueues Projects::ProcessSyncEventsWorker if any left' do
+        stub_const("#{described_class}::BATCH_SIZE", 1)
+
+        expect(Projects::ProcessSyncEventsWorker).to receive(:perform_async)
+
+        execute
+      end
+
+      it 'does not enqueue Projects::ProcessSyncEventsWorker if no left' do
+        stub_const("#{described_class}::BATCH_SIZE", 2)
+
+        expect(Projects::ProcessSyncEventsWorker).not_to receive(:perform_async)
+
+        execute
+      end
+
+      context 'when there is no event' do
+        before do
+          Projects::SyncEvent.delete_all
+        end
+
+        it 'does nothing' do
+          expect { execute }.not_to change(Projects::SyncEvent, :count)
+        end
+      end
+
+      context 'when the FF ci_namespace_project_mirrors is disabled' do
+        before do
+          stub_feature_flags(ci_namespace_project_mirrors: false)
+        end
+
+        it 'does nothing' do
+          expect { execute }.not_to change(Projects::SyncEvent, :count)
+        end
+      end
+    end
+
+    context 'for Namespaces::SyncEvent' do
+      let(:sync_event_class) { Namespaces::SyncEvent }
+      let(:hierarchy_class) { ::Ci::NamespaceMirror }
+
+      before do
+        Namespaces::SyncEvent.delete_all
+
+        group.update!(parent: parent_group_2)
+        parent_group_2.update!(parent: parent_group_1)
+      end
+
+      shared_examples 'event consuming' do
+        it 'consumes events' do
+          expect { execute }.to change(Namespaces::SyncEvent, :count).from(2).to(0)
+
+          expect(group.ci_namespace_mirror).to have_attributes(
+            traversal_ids: [parent_group_1.id, parent_group_2.id, group.id]
+          )
+          expect(parent_group_2.ci_namespace_mirror).to have_attributes(
+            traversal_ids: [parent_group_1.id, parent_group_2.id]
+          )
+        end
+      end
+
+      context 'when the FFs sync_traversal_ids, use_traversal_ids and use_traversal_ids_for_ancestors are disabled' do
+        before do
+          stub_feature_flags(sync_traversal_ids: false,
+                             use_traversal_ids: false,
+                             use_traversal_ids_for_ancestors: false)
+        end
+
+        it_behaves_like 'event consuming'
+      end
+
+      it_behaves_like 'event consuming'
+
+      it 'enqueues Namespaces::ProcessSyncEventsWorker if any left' do
+        stub_const("#{described_class}::BATCH_SIZE", 1)
+
+        expect(Namespaces::ProcessSyncEventsWorker).to receive(:perform_async)
+
+        execute
+      end
+
+      it 'does not enqueue Namespaces::ProcessSyncEventsWorker if no left' do
+        stub_const("#{described_class}::BATCH_SIZE", 2)
+
+        expect(Namespaces::ProcessSyncEventsWorker).not_to receive(:perform_async)
+
+        execute
+      end
+    end
+  end
+end