public function testInsert()
{
$list = new CommaListNode();
$list->insertItem($this->createNode('$c'), 0);
$items = $list->getItems();
$this->assertCount(1, $items);
$this->assertEquals('$c', $items[0]->getText());
$list->insertItem($this->createNode('$a'), 0);
$items = $list->getItems();
$this->assertCount(2, $items);
$this->assertEquals('$a', $items[0]->getText());
$this->assertEquals('$c', $items[1]->getText());
$list->insertItem($this->createNode('$b'), 1);
$items = $list->getItems();
$this->assertCount(3, $items);
$this->assertEquals('$a', $items[0]->getText());
$this->assertEquals('$b', $items[1]->getText());
$this->assertEquals('$c', $items[2]->getText());
}
