From 1ef326e2206a860837abbc0c0c7e99b15b10d538 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Fri, 5 Feb 2021 09:29:56 +0530
Subject: [PATCH] Better error message

---
 kitty_tests/graphics.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kitty_tests/graphics.py b/kitty_tests/graphics.py
index 0e1095342..014debc4d 100644
--- a/kitty_tests/graphics.py
+++ b/kitty_tests/graphics.py
@@ -111,6 +111,7 @@ def load_helpers(self):
         cid = kw.setdefault('i', 1)
         self.ae('OK', pl(payload, **kw))
         img = g.image_for_client_id(cid)
+        self.assertIsNotNone(img, f'No image with id {cid} found')
         self.ae(img['client_id'], cid)
         self.ae(img['data'], data)
         if 's' in kw: