`usleep` in tap tests is usually a bad pattern. Do we have a chance to test this using `wait_for_log` or similar?
I'm not sure we can use `wait_for_log` because it checks for only one logfile. But even if it's possible, I don't think it's a good idea to use different checks in the same file or to change tests for another feature. I used test case from above as an example for mine.
