atf_expect_timeout(3) on FreeBSD
The text e59a5917d673, as FreeBSD 14.3-RELEASE, FreeBSD 14.2-RELEASE, FreeBSD 14.1-RELEASE, FreeBSD 14.0-RELEASE, FreeBSD 13.5-RELEASE, FreeBSD 13.4-RELEASE shipped it.
POSIX shell API to write ATF-based test programs