Testing for NULL return values in test scripts

[Walter Goulet]

Hi,

I was wondering if there is a way to use the ok() function in Test.pm
to check for a null return value. It looks like the 3 arg form of ok()
I'm using only tests the first 2 args to see if they're equal.

I'm considering this approach:

$val = some_func(); # returns NULL on failure

if($val != 0 && $val ne "0")
{
   $isnull = 0;
}
else
{
   $isnull = 1;
}

ok($isnull,0,"NULL returned");

Thanks,
Walter