test: add an extra assert into litest_wait_for_event_of_type

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/test/litest.c b/test/litest.c
index 9fc1235..fc3e8b5 100644
--- a/test/litest.c
+++ b/test/litest.c
@@ -2353,7 +2353,8 @@ litest_wait_for_event_of_type(struct libinput *li, ...)
 		struct libinput_event *event;
 
 		while ((type = libinput_next_event_type(li)) == LIBINPUT_EVENT_NONE) {
-			poll(&fds, 1, -1);
+			int rc = poll(&fds, 1, -1);
+			litest_assert_int_gt(rc, -1);
 			libinput_dispatch(li);
 		}