tests/gateway/test_relay_capability_surface.py::test_abstract_methods_are_the_known_set
tests/gateway/test_relay_capability_surface.py::test_message_len_fn_defaults_to_len
tests/gateway/test_relay_capability_surface.py::test_supports_draft_streaming_defaults_false
tests/gateway/test_relay_capability_surface.py::test_stream_consumer_reads_max_message_length_by_attribute