fix FcmErrorCode error type (#222)

Author: chemidy

CHANGELOG.md

@@ -1,6 +1,7 @@
 # Unreleased
 
--
+- [fixed] Fixing error handling in FCM. The SDK now checks the key
+  type.googleapis.com/google.firebase.fcm.v1.FcmError to set error code.
 
 # v2.13.0
 

firebase_admin/messaging.py

@@ -943,7 +943,7 @@ def _handle_fcm_error(self, error):
         error_dict = data.get('error', {})
         server_code = None
         for detail in error_dict.get('details', []):
-            if detail.get('@type') == 'type.googleapis.com/google.firebase.fcm.v1.FcmErrorCode':
+            if detail.get('@type') == 'type.googleapis.com/google.firebase.fcm.v1.FcmError':
                 server_code = detail.get('errorCode')
                 break
         if not server_code:

tests/test_messaging.py

@@ -1120,7 +1120,7 @@ def test_send_fcm_error_code(self, status):
                 'message': 'test error',
                 'details': [
                     {
-                        '@type': 'type.googleapis.com/google.firebase.fcm.v1.FcmErrorCode',
+                        '@type': 'type.googleapis.com/google.firebase.fcm.v1.FcmError',
                         'errorCode': 'UNREGISTERED',
                     },
                 ],