test: use countdown in test file
Fixes: #17169 (closed)
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
commit message follows commit guidelines
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Fixes: #17169 (closed)
make -j4 test
(UNIX), or vcbuild test
(Windows) passes