Don't cover a few error cases and odd ball things

src/documents/management/commands/document_consumer.py

@@ -550,10 +550,10 @@ class Command(BaseCommand):
                 elif is_testing:
                     # In testing, use short timeout to check stop flag
                     timeout_ms = testing_timeout_ms
-                else:
+                else:  # pragma: nocover
                     # No pending files, wait indefinitely
                     timeout_ms = 0
 
-            except KeyboardInterrupt:
+            except KeyboardInterrupt:  # pragma: nocover
                 logger.info("Received interrupt, stopping consumer")
                 self.stop_flag.set()