Ewww. Why not just: 
tested_sub();
ok(some side effect, "expected side effect");
my $scalar_response = tested_sub();
is($scalar_response, $expected, "gives proper scalar value");
my @list_response = tested_sub();
is_deeply(\@list_response,\@expected_response, "gives proper list valu
+e");

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Don't be trying to freak Perl out. I'd never expect the right response from giving it the wrong context. That's just asking for hurt.

-- Randal L. Schwartz, Perl hacker

In reply to Re: What I want to do with that by merlyn
in thread Overwrite built-in wantarray() by Tobiwan

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