1 files changed, 9 insertions, 0 deletions

diff --git a/spec/lib/banzai/filter/table_of_contents_filter_spec.rb b/spec/lib/banzai/filter/table_of_contents_filter_spec.rb
index 0cfef4ff5bf..7213cd58ea7 100644
--- a/spec/lib/banzai/filter/table_of_contents_filter_spec.rb
+++ b/spec/lib/banzai/filter/table_of_contents_filter_spec.rb
@@ -139,5 +139,14 @@ describe Banzai::Filter::TableOfContentsFilter do
         expect(items[5].ancestors).to include(items[4])
       end
     end
+
+    context 'header text contains escaped content' do
+      let(:content) { '<img src="x" onerror="alert(42)">' }
+      let(:results) { result(header(1, content)) }
+
+      it 'outputs escaped content' do
+        expect(doc.inner_html).to include(content)
+      end
+    end
   end
 end