Among those two calls of &$test they are almost equivalent, and first one will trap any errors, so you can later check $@ variable to see if subroutine died. Like "try" in C++.

OTOH my personal preference is to call anonymous sub as

$test->();
$test->('arg1',$arg2);
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Courage, the Cowardly Dog.
PS. Something fishy is going on there, or my name is Vadim Konovalov. And it's not.