assert hash_dir("SYS:") == "112345oldhashvalue1234123"
mark SYS: dirty
copy_dir "PKG:android-files" SYS:
assert hash_dir("SYS:") == "667890newhashvalue6678909"
mark SYS: clean
done
assert hash_dir("SYS:", "blah") == "112345oldhashvalue1234123"
assert "true" == "false"
assert matches(hash_dir("SYS:"), "667890newhashvalue6678909", "999999newhashvalue6678909") != ""
assert hash_dir("SYS:") == "667890newhashvalue6678909" || hash_dir("SYS:") == "999999newhashvalue6678909"