use Some::Module;
use Test::More tests => 2;

{
my $some_function_called;
local *some_function = sub {
    $some_function_called++;
    return @canned_results;
};

my @res = other_function_that_calls_some_function();
is $some_function_called, 1, 'We asked for resource existence';
is_deeply \@res, ['expected', 'results'], 'We got good results';
}