In _wrap_message_stream_manager_enter, span.__enter__() is called at line 789, but there's no try/finally block to ensure the span is closed if an exception occurs before the iterator wrapper's finally block runs. If _set_common_input_data() or the iterator assignment at lines 791-809 throws, the span remains open indefinitely. Other similar functions like _sentry_patched_create_sync have a finally block to close the span on errors.

The new test_stream_messages test does not assert that SPANDATA.GEN_AI_SYSTEM is set to 'anthropic'. The existing test_streaming_create_message test (line 306) includes this assertion. Since _set_common_input_data is called by _wrap_message_stream_manager_enter and does set this attribute (in anthropic.py line 289), the assertion should be included for test completeness.

Also found at:

• tests/integrations/anthropic/test_anthropic.py:842-843
• tests/integrations/anthropic/test_anthropic.py:1788-1791

The new test_stream_messages test does not assert that SPANDATA.GEN_AI_RESPONSE_ID is set. The existing test_streaming_create_message test (line 325) includes this assertion. Since the same iterator wrapper (_wrap_synchronous_message_iterator) is used for both streaming paths and the response_id is captured in _collect_ai_data and set via _set_output_data, this assertion should be included for test coverage parity.

The comment on line 2919 says # input_tokens should be total: 19 + 2846 = test_stream_messages_input_tokens_include_cache_read_streaming but should say = 2865. This appears to be a copy-paste error where the new test function name was accidentally inserted into the comment. While this doesn't affect runtime behavior, it may confuse future maintainers.