1 files changed, 178 insertions, 0 deletions
diff --git a/spec/workers/container_registry/migration/enqueuer_worker_spec.rb b/spec/workers/container_registry/migration/enqueuer_worker_spec.rb
new file mode 100644
index 00000000000..12c14c35365
--- /dev/null
+++ b/spec/workers/container_registry/migration/enqueuer_worker_spec.rb
@@ -0,0 +1,178 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe ContainerRegistry::Migration::EnqueuerWorker, :aggregate_failures do
+  let_it_be_with_reload(:container_repository) { create(:container_repository, created_at: 2.days.ago) }
+
+  let(:worker) { described_class.new }
+
+  before do
+    stub_container_registry_config(enabled: true)
+    stub_application_setting(container_registry_import_created_before: 1.day.ago)
+    stub_container_registry_tags(repository: container_repository.path, tags: %w(tag1 tag2 tag3), with_manifest: true)
+  end
+
+  describe '#perform' do
+    subject { worker.perform }
+
+    shared_examples 'no action' do
+      it 'does not queue or change any repositories' do
+        subject
+
+        expect(container_repository.reload).to be_default
+      end
+    end
+
+    shared_examples 're-enqueuing based on capacity' do
+      context 'below capacity' do
+        before do
+          allow(ContainerRegistry::Migration).to receive(:capacity).and_return(9999)
+        end
+
+        it 're-enqueues the worker' do
+          expect(ContainerRegistry::Migration::EnqueuerWorker).to receive(:perform_async)
+
+          subject
+        end
+      end
+
+      context 'above capacity' do
+        before do
+          allow(ContainerRegistry::Migration).to receive(:capacity).and_return(-1)
+        end
+
+        it 'does not re-enqueue the worker' do
+          expect(ContainerRegistry::Migration::EnqueuerWorker).not_to receive(:perform_async)
+
+          subject
+        end
+      end
+    end
+
+    context 'with qualified repository' do
+      it 'starts the pre-import for the next qualified repository' do
+        method = worker.method(:next_repository)
+        allow(worker).to receive(:next_repository) do
+          next_qualified_repository = method.call
+          allow(next_qualified_repository).to receive(:migration_pre_import).and_return(:ok)
+          next_qualified_repository
+        end
+
+        expect(worker).to receive(:log_extra_metadata_on_done)
+          .with(:container_repository_id, container_repository.id)
+        expect(worker).to receive(:log_extra_metadata_on_done)
+          .with(:import_type, 'next')
+
+        subject
+
+        expect(container_repository.reload).to be_pre_importing
+      end
+
+      it_behaves_like 're-enqueuing based on capacity'
+    end
+
+    context 'migrations are disabled' do
+      before do
+        allow(ContainerRegistry::Migration).to receive(:enabled?).and_return(false)
+      end
+
+      it_behaves_like 'no action'
+    end
+
+    context 'above capacity' do
+      before do
+        create(:container_repository, :importing)
+        create(:container_repository, :importing)
+        allow(ContainerRegistry::Migration).to receive(:capacity).and_return(1)
+      end
+
+      it_behaves_like 'no action'
+
+      it 'does not re-enqueue the worker' do
+        expect(ContainerRegistry::Migration::EnqueuerWorker).not_to receive(:perform_async)
+
+        subject
+      end
+    end
+
+    context 'too soon before previous completed import step' do
+      before do
+        create(:container_repository, :import_done, migration_import_done_at: 1.minute.ago)
+        allow(ContainerRegistry::Migration).to receive(:enqueue_waiting_time).and_return(1.hour)
+      end
+
+      it_behaves_like 'no action'
+    end
+
+    context 'when an aborted import is available' do
+      let_it_be(:aborted_repository) { create(:container_repository, :import_aborted) }
+
+      it 'retries the import for the aborted repository' do
+        method = worker.method(:next_aborted_repository)
+        allow(worker).to receive(:next_aborted_repository) do
+          next_aborted_repository = method.call
+          allow(next_aborted_repository).to receive(:migration_import).and_return(:ok)
+          allow(next_aborted_repository.gitlab_api_client).to receive(:import_status).and_return('import_failed')
+          next_aborted_repository
+        end
+
+        expect(worker).to receive(:log_extra_metadata_on_done)
+          .with(:container_repository_id, aborted_repository.id)
+        expect(worker).to receive(:log_extra_metadata_on_done)
+          .with(:import_type, 'retry')
+
+        subject
+
+        expect(aborted_repository.reload).to be_importing
+        expect(container_repository.reload).to be_default
+      end
+
+      it_behaves_like 're-enqueuing based on capacity'
+    end
+
+    context 'when no repository qualifies' do
+      include_examples 'an idempotent worker' do
+        before do
+          allow(ContainerRepository).to receive(:ready_for_import).and_return(ContainerRepository.none)
+        end
+
+        it_behaves_like 'no action'
+      end
+    end
+
+    context 'over max tag count' do
+      before do
+        stub_application_setting(container_registry_import_max_tags_count: 2)
+      end
+
+      it 'skips the repository' do
+        subject
+
+        expect(container_repository.reload).to be_import_skipped
+        expect(container_repository.migration_skipped_reason).to eq('too_many_tags')
+        expect(container_repository.migration_skipped_at).not_to be_nil
+      end
+
+      it_behaves_like 're-enqueuing based on capacity'
+    end
+
+    context 'when an error occurs' do
+      before do
+        allow(ContainerRegistry::Migration).to receive(:max_tags_count).and_raise(StandardError)
+      end
+
+      it 'aborts the import' do
+        expect(Gitlab::ErrorTracking).to receive(:log_exception).with(
+          instance_of(StandardError),
+          next_repository_id: container_repository.id,
+          next_aborted_repository_id: nil
+        )
+
+        subject
+
+        expect(container_repository.reload).to be_import_aborted
+      end
+    end
+  end
+end