Re^2: Recursively traverse two data structures and test for match

[dragonchild]

That's not a slam on anything that uses overloaded values. There's just a problem with how overloading is done. I wrote about it here. There's just no correct way to compare overloaded values from different classes.

[diotalevi]

You didn't understand. If you wished to compare that two structures were identical as if overloading didn't exist, you're out of luck. Test::More's is_deeply doesn't do anything to disable the overloading and to thus act on the data structure transparently.

[jdporter]

Nor should it. If a class defines the concept of equality for itself, any external equality-testing framework should respect that.

(btw - those interested should refer to FAQ How do I test the deep equality of two hash tables?)

[diotalevi]

Sometimes it should, especially when testing the overloaded objects. It is the lack of any is_deeply test which is able to see through overloading that lead me to do something hokey and do cmp_eq( Data::Dump::Streamer::Dump($a), 'eq', Data::Dump::Streamer::Dump($b) ) tests instead.

If an overloaded object wanted to pretend to be normal, it can use an utterly normal test and it'll get called as usual. Its the stuff like Test::More which should be able to have x-ray eyes to see through overloading.