symfony/symfony — comment on commit d02f17268ecd2aed4730d4eb557733d5e038ed2e
File: tests/Symfony/Tests/Component/Form/Extension/Core/EventListener/MergeCollectionListenerCustomArrayObjectTest.php line 24
By stof:

well, why not simply putting ``array()`` as default value instead of ``null`` ? it would solve all this discussion.

And btw, this is only a test double :)