public function testCanRemoveChild()
{
$node = new Node(Tree::ROOT_NODE_ID);
$child = new Node('node', $node);
$node->addChild($child);
$node->removeChild($child);
$this->assertTrue(0 === $node->getChildren()->count());
}
/**
* Will throw an exception if the node is a root node
*
* @param Node $node
*
* @throws Exception\OperationNotAllowedException
*/
private function assertIsNotRoot(Node $node)
{
if (!$node->isRoot()) {
return;
}
throw new OperationNotAllowedException('Could not perform operation on root node.');
}
/**
* This class does not use the $index part of this method
*
* {@inheritdoc}
*/
public function add(Node $node, $index = null)
{
$this->nodes[$node->getId()] = $node;
return $this;
}
