Initial commit of WIP code for consideration

Squash this commit and reword before merging..

1 files changed, 11 insertions, 0 deletions

diff --git a/spec/lib/banzai/filter/commit_reference_filter_spec.rb b/spec/lib/banzai/filter/commit_reference_filter_spec.rb
index 1bc0335cfc0..326703eea05 100644
--- a/spec/lib/banzai/filter/commit_reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/commit_reference_filter_spec.rb
@@ -105,6 +105,17 @@ describe Banzai::Filter::CommitReferenceFilter do
 
         expect(doc.css('a').first[:href]).to eq(url)
       end
+
+      context "a doc with many (29) strings that could be SHAs" do
+        let!(:oids) { noteable.commits.collect(&:id) }
+
+        it 'makes only a single request to Gitaly' do
+          expect(Gitlab::GitalyClient).to receive(:allow_n_plus_1_calls).exactly(0).times
+          expect(Gitlab::Git::Commit).to receive(:batch_by_oid).once.and_call_original
+
+          reference_filter("A big list of SHAs #{oids.join(", ")}", noteable: noteable)
+        end
+      end
     end
   end