@main[]
$sDir[outputs/345]
$dDir[outputs/345.test]
$f[test.txt]

$s[test]
^s.save[$sDir/$f]
^file:move[$sDir/$f;$dDir/$f; $.keep-empty-dirs(true) ]

^file:delete[$sDir/404.txt; $.exception(false) ]
^file:delete[$dDir/$f; $.keep-empty-dirs(true) ]

1. ^if(-d $sDir){ok}
2. ^if(-d $dDir){ok}
3. ^if(-d "$dDir/$f"){}{ok}

^s.save[$sDir/$f]
^file:move[$sDir/$f;$dDir/$f]
^file:delete[$dDir/$f]

4. ^if(-d $sDir){}{ok}
5. ^if(-d $dDir){}{ok}

6. ^try-catch{ ^file:delete[name; $.no-such-option[] ] }
7. ^try-catch{ ^file:move[name;name; $.no-such-option[] ] }