1 files changed, 117 insertions, 0 deletions
diff --git a/spec/services/clusters/cleanup/app_service_spec.rb b/spec/services/clusters/cleanup/app_service_spec.rb
new file mode 100644
index 00000000000..cc27f409086
--- /dev/null
+++ b/spec/services/clusters/cleanup/app_service_spec.rb
@@ -0,0 +1,117 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Clusters::Cleanup::AppService do
+  describe '#execute' do
+    let!(:cluster) { create(:cluster, :project, :cleanup_uninstalling_applications, provider_type: :gcp) }
+    let(:service) { described_class.new(cluster) }
+    let(:logger) { service.send(:logger) }
+    let(:log_meta) do
+      {
+        service: described_class.name,
+        cluster_id: cluster.id,
+        execution_count: 0
+      }
+    end
+
+    subject { service.execute }
+
+    shared_examples 'does not reschedule itself' do
+      it 'does not reschedule itself' do
+        expect(Clusters::Cleanup::AppWorker).not_to receive(:perform_in)
+      end
+    end
+
+    context 'when cluster has no applications available or transitioning applications' do
+      it_behaves_like 'does not reschedule itself'
+
+      it 'transitions cluster to cleanup_removing_project_namespaces' do
+        expect { subject }
+          .to change { cluster.reload.cleanup_status_name }
+          .from(:cleanup_uninstalling_applications)
+          .to(:cleanup_removing_project_namespaces)
+      end
+
+      it 'schedules Clusters::Cleanup::ProjectNamespaceWorker' do
+        expect(Clusters::Cleanup::ProjectNamespaceWorker).to receive(:perform_async).with(cluster.id)
+        subject
+      end
+
+      it 'logs all events' do
+        expect(logger).to receive(:info)
+          .with(log_meta.merge(event: :schedule_remove_project_namespaces))
+
+        subject
+      end
+    end
+
+    context 'when cluster has uninstallable applications' do
+      shared_examples 'reschedules itself' do
+        it 'reschedules itself' do
+          expect(Clusters::Cleanup::AppWorker)
+            .to receive(:perform_in)
+            .with(1.minute, cluster.id, 1)
+
+          subject
+        end
+      end
+
+      context 'has applications with dependencies' do
+        let!(:helm) { create(:clusters_applications_helm, :installed, cluster: cluster) }
+        let!(:ingress) { create(:clusters_applications_ingress, :installed, cluster: cluster) }
+        let!(:cert_manager) { create(:clusters_applications_cert_manager, :installed, cluster: cluster) }
+        let!(:jupyter) { create(:clusters_applications_jupyter, :installed, cluster: cluster) }
+
+        it_behaves_like 'reschedules itself'
+
+        it 'only uninstalls apps that are not dependencies for other installed apps' do
+          expect(Clusters::Applications::UninstallWorker)
+            .not_to receive(:perform_async).with(helm.name, helm.id)
+
+          expect(Clusters::Applications::UninstallWorker)
+            .not_to receive(:perform_async).with(ingress.name, ingress.id)
+
+          expect(Clusters::Applications::UninstallWorker)
+            .to receive(:perform_async).with(cert_manager.name, cert_manager.id)
+            .and_call_original
+
+          expect(Clusters::Applications::UninstallWorker)
+            .to receive(:perform_async).with(jupyter.name, jupyter.id)
+            .and_call_original
+
+          subject
+        end
+
+        it 'logs application uninstalls and next execution' do
+          expect(logger).to receive(:info)
+            .with(log_meta.merge(event: :uninstalling_app, application: kind_of(String))).exactly(2).times
+          expect(logger).to receive(:info)
+            .with(log_meta.merge(event: :scheduling_execution, next_execution: 1))
+
+          subject
+        end
+
+        context 'cluster is not cleanup_uninstalling_applications' do
+          let!(:cluster) { create(:cluster, :project, provider_type: :gcp) }
+
+          it_behaves_like 'does not reschedule itself'
+        end
+      end
+
+      context 'when applications are still uninstalling/scheduled/depending on others' do
+        let!(:helm) { create(:clusters_applications_helm, :installed, cluster: cluster) }
+        let!(:ingress) { create(:clusters_applications_ingress, :scheduled, cluster: cluster) }
+        let!(:runner) { create(:clusters_applications_runner, :uninstalling, cluster: cluster) }
+
+        it_behaves_like 'reschedules itself'
+
+        it 'does not call the uninstallation service' do
+          expect(Clusters::Applications::UninstallWorker).not_to receive(:new)
+
+          subject
+        end
+      end
+    end
+  end
+end