public function testPush()
{
$listener = Mockery::mock(ListenerInterface::CLASS);
$listener->shouldReceive('onCollectionChanged')->with(CollectionChangedEvent::CLASS)->once();
$items = $this->createRandomItems();
$list = new ArrayList($items);
$list->addListener($listener);
$prev_count = $list->getSize();
$new_item = TestObject::createRandomInstance();
$list->push($new_item);
$this->assertEquals($prev_count + 1, $list->getSize());
$this->assertEquals($new_item, $list->getLast());
}
