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-rw-r--r--test/functional/ui/screen.lua3
1 files changed, 2 insertions, 1 deletions
diff --git a/test/functional/ui/screen.lua b/test/functional/ui/screen.lua
index df0fce4199..3b39794465 100644
--- a/test/functional/ui/screen.lua
+++ b/test/functional/ui/screen.lua
@@ -500,7 +500,8 @@ function Screen:_wait(check, flags)
local did_miminal_timeout = false
local function notification_cb(method, args)
- assert(method == 'redraw')
+ assert(method == 'redraw', string.format(
+ 'notification_cb: unexpected method (%s, args=%s)', method, inspect(args)))
did_flush = self:_redraw(args)
if not did_flush then
return