1 files changed, 44 insertions, 0 deletions
diff --git a/spec/workers/background_migration_worker_spec.rb b/spec/workers/background_migration_worker_spec.rb
new file mode 100644
index 00000000000..4f6e3474634
--- /dev/null
+++ b/spec/workers/background_migration_worker_spec.rb
@@ -0,0 +1,44 @@
+require 'spec_helper'
+
+describe BackgroundMigrationWorker, :sidekiq do
+  describe '.perform' do
+    it 'performs a background migration' do
+      expect(Gitlab::BackgroundMigration)
+        .to receive(:perform)
+        .with('Foo', [10, 20])
+
+      described_class.new.perform('Foo', [10, 20])
+    end
+  end
+
+  describe '.perform_bulk' do
+    it 'enqueues background migrations in bulk' do
+      Sidekiq::Testing.fake! do
+        described_class.perform_bulk([['Foo', [1]], ['Foo', [2]]])
+
+        expect(described_class.jobs.count).to eq 2
+        expect(described_class.jobs).to all(include('enqueued_at'))
+      end
+    end
+  end
+
+  describe '.perform_bulk_in' do
+    context 'when delay is valid' do
+      it 'correctly schedules background migrations' do
+        Sidekiq::Testing.fake! do
+          described_class.perform_bulk_in(1.minute, [['Foo', [1]], ['Foo', [2]]])
+
+          expect(described_class.jobs.count).to eq 2
+          expect(described_class.jobs).to all(include('at'))
+        end
+      end
+    end
+
+    context 'when delay is invalid' do
+      it 'raises an ArgumentError exception' do
+        expect { described_class.perform_bulk_in(-60, [['Foo']]) }
+          .to raise_error(ArgumentError)
+      end
+    end
+  end
+end