Upstream sync

spec/models/headshot_collection_spec.rb

@@ -97,6 +97,18 @@ describe HeadshotCollection do
         expect(hash.keys).not_to include(:collection_uid)
       end
     end
+
+    context "when there are no releasables" do
+      it "includes a blank hash value for the ids_to_images key" do
+        releases = []
+        collection = HeadshotCollection.new(nil, releases)
+
+        hash = collection.to_hash
+
+        expect(hash.keys).to include(:ids_to_images)
+        expect(hash[:ids_to_images]).to eq(Hash.new)
+      end
+    end
   end
 
   private