https://github.com/vyos/vyos-build/blob/rolling/scripts/check-qemu-install#L1368
i = c.expect(['\n +Invalid command:', '\n +Set failed',
'No such file or directory', r'\n\S+@\S+[$#]'], timeout=test_timeout)
...
if i == 2:
tmp = '(W)hy (T)he (F)ace? VyOS smoketest not found!'
log.error(tmp)
raise Exception(tmp)If a smoketest unit test outputs 'No such file or directory', the smoketest script will exit prematurely.