Branding: raise custom error when constructing remote objects

The default KeyError message from dict lookup is just the missing key.
In order to give more context in the log message, we raise our own.

1 files changed, 3 insertions, 0 deletions

diff --git a/bot/exts/backend/branding/_repository.py b/bot/exts/backend/branding/_repository.py
index 715361c5d..91a95ae3a 100644
--- a/bot/exts/backend/branding/_repository.py
+++ b/bot/exts/backend/branding/_repository.py
@@ -43,6 +43,9 @@ class RemoteObject:
 
     def __init__(self, dictionary: t.Dict[str, t.Any]) -> None:
         """Initialize by grabbing annotated attributes from `dictionary`."""
+        missing_keys = self.__annotations__.keys() - dictionary.keys()
+        if missing_keys:
+            raise KeyError(f"Fetched object lacks expected keys: {missing_keys}")
         for annotation in self.__annotations__:
             setattr(self, annotation, dictionary[annotation])