I have a tool for that, too. It's ~/bin/newtest:
#!/usr/bin/perl -w
use strict;
use File::Path;
use File::Basename;
my $progfile = basename( $0 );
die "$progfile <modname> <test filename>\n" unless @ARGV >= 2;
my ($modname, $filename) = @ARGV;
my $filepath = dirname( $filename );
mkpath( $filepath ) unless -e $filepath;
open my $out, '>', $filename or die "Can't open '$filename': $!";
print $out <<END_HERE;
#!/usr/bin/perl -w
BEGIN
{
chdir 't' if -d 't';
use lib '../lib', '../blib/lib';
}
use strict;
use Test::More 'no_plan'; # tests => 1;
my \$module = '$modname';
use_ok( \$module ) or exit;
END_HERE
For Some::Module, run newtest Some::Module t/testfile.t.