ObjectRenderer doesn't crash when no objects to cache with Rails.cache.read_multi

1 files changed, 11 insertions, 0 deletions

diff --git a/spec/lib/banzai/object_renderer_spec.rb b/spec/lib/banzai/object_renderer_spec.rb
index cf6cdd33ebb..bcdb95250ca 100644
--- a/spec/lib/banzai/object_renderer_spec.rb
+++ b/spec/lib/banzai/object_renderer_spec.rb
@@ -109,6 +109,17 @@ describe Banzai::ObjectRenderer do
       expect(docs[1]).to be_an_instance_of(Nokogiri::HTML::DocumentFragment)
       expect(docs[1].to_html).to eq('<p>bye</p>')
     end
+
+    it 'returns when no objects to render' do
+      objects = []
+      renderer = described_class.new(project, user, pipeline: :note)
+
+      expect(Banzai).to receive(:cache_collection_render).
+        with([]).
+        and_call_original
+
+      expect(renderer.render_attributes(objects, :note)).to eq([])
+    end
   end
 
   describe '#base_context' do