1 files changed, 43 insertions, 0 deletions
diff --git a/spec/migrations/backfill_project_namespaces_for_group_spec.rb b/spec/migrations/backfill_project_namespaces_for_group_spec.rb
new file mode 100644
index 00000000000..0d34d19d42a
--- /dev/null
+++ b/spec/migrations/backfill_project_namespaces_for_group_spec.rb
@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+require_migration!
+
+RSpec.describe BackfillProjectNamespacesForGroup do
+  let_it_be(:migration) { described_class::MIGRATION }
+
+  let(:projects) { table(:projects) }
+  let(:namespaces) { table(:namespaces) }
+  let(:parent_group1) { namespaces.create!(name: 'parent_group1', path: 'parent_group1', visibility_level: 20, type: 'Group') }
+  let!(:parent_group1_project) { projects.create!(name: 'parent_group1_project', path: 'parent_group1_project', namespace_id: parent_group1.id, visibility_level: 20) }
+
+  before do
+    allow(Gitlab).to receive(:com?).and_return(true)
+  end
+
+  describe '#up' do
+    before do
+      stub_const("BackfillProjectNamespacesForGroup::GROUP_ID", parent_group1.id)
+    end
+
+    it 'schedules background jobs for each batch of namespaces' do
+      migrate!
+
+      expect(migration).to have_scheduled_batched_migration(
+        table_name: :projects,
+        column_name: :id,
+        job_arguments: [described_class::GROUP_ID, 'up'],
+        interval: described_class::DELAY_INTERVAL
+      )
+    end
+  end
+
+  describe '#down' do
+    it 'deletes all batched migration records' do
+      migrate!
+      schema_migrate_down!
+
+      expect(migration).not_to have_scheduled_batched_migration
+    end
+  end
+end