The `fake_record_sql_queries_streaming` mock in the `span_streaming=True` branch exits the inner `with record_sql_queries(...) as span: pass` block immediately, causing `StreamedSpan._end()` to fire and serialize the span to the batcher before timestamps are mocked and before `add_query_source` runs. The assertion `assert "code.line.number" not in data` will always pass regardless of the threshold logic, meaning a regression that always adds code source would go undetected.