add agent subscription

tests/conftest.py

@@ -6,14 +6,15 @@
 @File    : conftest.py
 """
 
+import asyncio
+import logging
+import re
 from unittest.mock import Mock
 
 import pytest
 
 from metagpt.logs import logger
 from metagpt.provider.openai_api import OpenAIGPTAPI as GPTAPI
-import asyncio
-import re
 
 
 class Context:
@@ -68,3 +69,14 @@ def proxy():
 
     server = asyncio.get_event_loop().run_until_complete(asyncio.start_server(handle_client, "127.0.0.1", 0))
     return "http://{}:{}".format(*server.sockets[0].getsockname())
+
+
+# see https://github.com/Delgan/loguru/issues/59#issuecomment-466591978
+@pytest.fixture
+def loguru_caplog(caplog):
+    class PropogateHandler(logging.Handler):
+        def emit(self, record):
+            logging.getLogger(record.name).handle(record)
+
+    logger.add(PropogateHandler(), format="{message}")
+    yield caplog