Removed trailing whitespace in formatted_answer, with a test

src/paperqa/types.py

@@ -465,7 +465,7 @@ def populate_formatted_answers_and_bib_from_raw_answer(
         )
 
         if bib:
-            formatted_with_references += f"\n\nReferences\n\n{bib}\n"
+            formatted_with_references += f"\n\nReferences\n\n{bib}"
 
         self.answer = formatted_without_references
         self.formatted_answer = formatted_with_references

tests/test_paperqa.py

@@ -3008,6 +3008,9 @@ def test_pqa_context_id_parsing(raw_text: str, cleaned_text: str) -> None:
     )
     session.populate_formatted_answers_and_bib_from_raw_answer()
     assert session.answer == cleaned_text
+    assert (
+        session.formatted_answer == session.formatted_answer.strip()
+    ), "Expecting no leading/trailing whitespace"
 
 
 @pytest.mark.asyncio