G'day gokhan,

Welcome to the monastery.

You've written both test_filelist_format() and test_format() as instance methods. If that's what they're supposed to be, you should invoke them like this:

$object->method(@args)
[download]

If they're supposed to be just normal subroutines, you'd call them like this:

function(@args)
[download]

and you should remove this line:

my $obj = shift;
[download]

You haven't shown sufficient code for me to advise which way around these should be: I see no use of $obj in either but you've omitted code from both so maybe $obj is used where you've shown "...". Regardless, that should be enough information for you to fix your current problem. I'd recommend you look in other parts of your code for similar issues.