fix test

Author: ranst91

python-sdk/tests/test_encoder.py

@@ -5,7 +5,6 @@
 from ag_ui.encoder.encoder import EventEncoder, AGUI_MEDIA_TYPE
 from ag_ui.core.events import BaseEvent, EventType, TextMessageContentEvent, ToolCallStartEvent
 
-
 class TestEventEncoder(unittest.TestCase):
     """Test suite for EventEncoder class"""
 
@@ -29,7 +28,10 @@ def test_encode_method(self):
         encoded = encoder.encode(event)
 
         # The encode method calls encode_sse, so the result should be in SSE format
-        expected = f"data: {event.model_dump_json(by_alias=True, exclude_none=True)}\n\n"
+        event_dict = event.model_dump(by_alias=True, exclude_none=True)
+        json_ready = self.make_json_safe(event_dict)
+        json_string = json.dumps(json_ready)
+        expected = f"data: {json_string}\n\n"
         self.assertEqual(encoded, expected)
 
         # Verify that camelCase is used in the encoded output