my $pattern = qr/$test/;
my $pattern1 = qr/$test1/;
# ...
        $new =~ s/$pattern/$pattern1/;
[download]

I think you have another problem here: The right-hand side of s/// (REPLACEMENT in s/PATTERN/REPLACEMENT/) is not a regular expression, but a string. See Regexp Quote Like Operators. Your use of qr// makes a regular expression from the second argument, then stringifies it. That will very likely give you an unexpected result:

>perl -e '$x="abc"; $p=qr/b/; $r=qr/X/; $x=~s/$p/$r/; print $x'
a(?^:X)c
>
[download]

Alexander