import logging from fastmcp.utilities.logging import get_logger def test_logging_doesnt_affect_other_loggers(caplog): # set FastMCP loggers to CRITICAL and ensure other loggers still emit messages original_level = logging.getLogger("fastmcp").getEffectiveLevel() try: logging.getLogger("fastmcp").setLevel(logging.CRITICAL) root_logger = logging.getLogger() app_logger = logging.getLogger("app") fastmcp_logger = logging.getLogger("fastmcp") fastmcp_server_logger = get_logger("server") with caplog.at_level(logging.INFO): root_logger.info("--ROOT--") app_logger.info("--APP--") fastmcp_logger.info("--FASTMCP--") fastmcp_server_logger.info("--FASTMCP SERVER--") assert "--ROOT--" in caplog.text assert "--APP--" in caplog.text assert "--FASTMCP--" not in caplog.text assert "--FASTMCP SERVER--" not in caplog.text finally: logging.getLogger("fastmcp").setLevel(original_level)