from __future__ import annotations import json import logging from app.logging import JsonFormatter def test_json_formatter_emits_structured_fields() -> None: record = logging.LogRecord("test", logging.INFO, __file__, 1, "hello %s", ("world",), None) record.request_id = "request-1" payload = json.loads(JsonFormatter().format(record)) assert payload["message"] == "hello world" assert payload["request_id"] == "request-1" assert payload["level"] == "INFO"