Add a new `fetch_remote_activity` helper

little_boxes/activitypub.py

@@ -1056,6 +1056,10 @@ class Note(BaseActivity):
         )
 
 
+def fetch_remote_activity(iri: str, expected: Optional[ActivityType]) -> BaseActivity:
+    return parse_activity(get_backend().fetch_iri(iri), expected=expected)
+
+
 class Box(object):
     def __init__(self, actor: Person) -> None:
         self.actor = actor

little_boxes/errors.py

@@ -26,13 +26,13 @@ class Error(Exception):
         rv["message"] = self.message
         return rv
 
-    def __repr__(self) -> str:
+    def __repr__(self) -> str:  # pragma: no cover
         return (
             f"{self.__class__.__qualname__}({self.message!r}, "
             f"payload={self.payload!r}, status_code={self.status_code})"
         )
 
-    def __str__(self) -> str:
+    def __str__(self) -> str:  # pragma: no cover
         return self.__repr__()