medium95%
Stale xfail markers in langchain-core tests cause XPASS and mask future regressions
Two unit tests in langchain-core (test_convert_to_openai_function_nested_v2 and test_sync_in_sync_lambdas) are decorated with @pytest.mark.xfail even though the underlying issues have been fixed. Running pytest reports XPASS (unexpectedly passing) for both tests. The stale markers should be removed to ensure test suite reflects current expected behavior and future regressions are not silently swallowed as XFAIL.