1 files changed, 14 insertions, 1 deletions
diff --git a/spec/lib/banzai/filter/merge_request_reference_filter_spec.rb b/spec/lib/banzai/filter/merge_request_reference_filter_spec.rb
index 275010c1a2c..40232f6e426 100644
--- a/spec/lib/banzai/filter/merge_request_reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/merge_request_reference_filter_spec.rb
@@ -17,6 +17,19 @@ describe Banzai::Filter::MergeRequestReferenceFilter, lib: true do
     end
   end
 
+  describe 'performance' do
+    let(:another_merge) { create(:merge_request, source_project: project, source_branch: 'fix') }
+
+    it 'does not have a N+1 query problem' do
+      single_reference = "Merge request #{merge.to_reference}"
+      multiple_references = "Merge requests #{merge.to_reference} and #{another_merge.to_reference}"
+
+      control_count = ActiveRecord::QueryRecorder.new { reference_filter(single_reference).to_html }.count
+
+      expect { reference_filter(multiple_references).to_html }.not_to exceed_query_limit(control_count)
+    end
+  end
+
   context 'internal reference' do
     let(:reference) { merge.to_reference }
 
@@ -188,7 +201,7 @@ describe Banzai::Filter::MergeRequestReferenceFilter, lib: true do
 
   context 'cross-project URL reference' do
     let(:namespace) { create(:namespace, name: 'cross-reference') }
-    let(:project2)  { create(:project, :public, namespace: namespace) }
+    let(:project2)  { create(:empty_project, :public, namespace: namespace) }
     let(:merge)     { create(:merge_request, source_project: project2, target_project: project2) }
     let(:reference) { urls.namespace_project_merge_request_url(project2.namespace, project2, merge) + '/diffs#note_123' }