1 files changed, 40 insertions, 0 deletions
diff --git a/spec/migrations/steal_fill_store_upload_spec.rb b/spec/migrations/steal_fill_store_upload_spec.rb
new file mode 100644
index 00000000000..ed809baf2b5
--- /dev/null
+++ b/spec/migrations/steal_fill_store_upload_spec.rb
@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+require Rails.root.join('db', 'post_migrate', '20181105201455_steal_fill_store_upload.rb')
+
+describe StealFillStoreUpload, :migration do
+  let(:uploads) { table(:uploads) }
+
+  describe '#up' do
+    it 'steals the FillStoreUpload background migration' do
+      expect(Gitlab::BackgroundMigration).to receive(:steal).with('FillStoreUpload').and_call_original
+
+      migrate!
+    end
+
+    it 'does not run migration if not needed' do
+      uploads.create(size: 100.kilobytes,
+                     uploader: 'AvatarUploader',
+                     path: 'uploads/-/system/avatar.jpg',
+                     store: 1)
+
+      expect_any_instance_of(Gitlab::BackgroundMigration::FillStoreUpload).not_to receive(:perform)
+
+      migrate!
+    end
+
+    it 'ensures all rows are migrated' do
+      uploads.create(size: 100.kilobytes,
+                     uploader: 'AvatarUploader',
+                     path: 'uploads/-/system/avatar.jpg',
+                     store: nil)
+
+      expect_any_instance_of(Gitlab::BackgroundMigration::FillStoreUpload).to receive(:perform).and_call_original
+
+      expect do
+        migrate!
+      end.to change { uploads.where(store: nil).count }.from(1).to(0)
+    end
+  end
+end