1 files changed, 18 insertions, 0 deletions
diff --git a/spec/workers/create_note_diff_file_worker_spec.rb b/spec/workers/create_note_diff_file_worker_spec.rb
index 4c1df8ade06..6d1d6d93e44 100644
--- a/spec/workers/create_note_diff_file_worker_spec.rb
+++ b/spec/workers/create_note_diff_file_worker_spec.rb
@@ -14,5 +14,23 @@ RSpec.describe CreateNoteDiffFileWorker do
 
       described_class.new.perform(diff_note.id)
     end
+
+    context "when the supplied diff_note_id doesn't belong to an existing DiffNote" do
+      it "returns nil without raising an error" do
+        expect_any_instance_of(DiffNote).not_to receive(:create_diff_file)
+        .and_call_original
+
+        described_class.new.perform(non_existing_record_id)
+      end
+    end
+
+    context "when called with a missing diff_note id" do
+      it "returns nil without creating diff file" do
+        expect_any_instance_of(DiffNote).not_to receive(:create_diff_file)
+        .and_call_original
+
+        described_class.new.perform(nil)
+      end
+    end
   end
 end