add con for mcp to graylog

tests/test_graylog_mcp.py

@@ -0,0 +1,37 @@
+import json
+import unittest
+from unittest.mock import patch
+
+from fgai.graylog_mcp import GraylogMcpClient
+
+
+class _Response:
+    def __init__(self, body: dict[str, object], session: str = "session-1") -> None:
+        self.body = body
+        self.headers = {"Mcp-Session-Id": session}
+
+    def read(self) -> bytes:
+        return json.dumps(self.body).encode("utf-8")
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *_args):
+        return False
+
+
+class GraylogMcpTests(unittest.TestCase):
+    def test_probe_initializes_and_lists_tools(self):
+        responses = iter([
+            _Response({"result": {"serverInfo": {"version": "7.1.6"}}}),
+            _Response({}),
+            _Response({"result": {"tools": [{"name": "search_messages"}, {"name": "aggregate_messages"}]}}),
+        ])
+        with patch("fgai.graylog_mcp.request.urlopen", side_effect=responses):
+            status = GraylogMcpClient("http://graylog/api/mcp", "raw-token").probe()
+        self.assertEqual(status["status"], "connected")
+        self.assertIn("search_messages", status["tools"])
+
+
+if __name__ == "__main__":
+    unittest.main()