public function testEquals()
{
$list = new HashableObjectStorage();
$this->assertTrue($list->equals($list), 'Empty list should be equal to itself');
$newList = clone $list;
$this->assertTrue($list->equals($newList), 'Empty list should be equal to a clone of itself');
$newList->attach(new HashableObject(1));
$this->assertFalse($list->equals($newList), 'Empty list should not be equal to a list with an element');
$list->attach(new HashableObject(1));
$this->assertTrue($list->equals($newList), 'Two lists with the same element should be equal');
}
/**
* @see SplObjectStorage::attach
*
* @param Reference $reference
* @param mixed $data Unused in the ReferenceList class.
*/
public function attach($reference, $data = null)
{
if (!$reference->isEmpty()) {
parent::attach($reference, $data);
}
}