public function testItemOrder()
{
$config = ['a', 'b'];
$itemsInReverseOrder = ['b' => $b = new Node(), 'a' => $a = new Node()];
$builder = new TreeBuilder();
$tree = $builder->build($config, $itemsInReverseOrder);
self::assertTrue($b === array_pop($tree));
}
/**
* Builds tree based on its nodes registry and hierarchy configuration
* if structure update required.
*/
public function build()
{
if ($this->updateRequired) {
$this->updateRequired = false;
foreach ($this->nodes as $node) {
if ($node->parent()) {
$node->unlock()->detach();
}
}
$this->root->addChildren($this->builder->build($this->hierarchy, $this->nodes->toArray()));
foreach ($this->nodes as $node) {
if ($node->parent() === $this->root || $this->nodes->contains($node->parent())) {
$node->lock();
}
}
}
}