public function testFindChildren()
{
$node = new Node();
$node->appendChild(new A())->appendChild((new B())->appendChild(new B()))->appendChild(new B())->appendChild(new D())->appendChild((new B())->appendChild((new B())->appendChild(new B())))->appendChild(new C())->appendChild(new D())->appendChild(new C())->appendChild(new D())->appendChild(new C())->appendChild(new D());
$aChildren = $node->findChildrenArray(function (LeafInterface $leaf) {
return $leaf->isInstanceOf(A::class);
});
$bDeepChildren = $node->findChildrenArray(function (LeafInterface $leaf) {
return $leaf->isInstanceOf(B::class);
});
$bFirstChildren = $node->findChildrenArray(function (LeafInterface $leaf) {
return $leaf->isInstanceOf(B::class);
}, 0);
$bSecondChildren = $node->findChildrenArray(function (LeafInterface $leaf) {
return $leaf->isInstanceOf(B::class);
}, 1);
$cChildren = $node->findChildrenArray(function (LeafInterface $leaf) {
return $leaf->isInstanceOf(C::class);
});
$dChildren = $node->findChildrenArray(function (LeafInterface $leaf) {
return $leaf->isInstanceOf(D::class);
});
$this->assertCount(1, $aChildren, 'A children');
$this->assertCount(6, $bDeepChildren, 'B deep children');
$this->assertCount(3, $bFirstChildren, 'B first level');
$this->assertCount(5, $bSecondChildren, 'B 2 levels');
$this->assertCount(3, $cChildren, 'C children');
$this->assertCount(4, $dChildren, 'D children');
}
/**
* @param string $name
* @param array|null $attributes
* @param NodeInterface|null $parent
* @param array|null $children
*/
public function __construct($name, array $attributes = null, NodeInterface $parent = null, array $children = null)
{
parent::__construct($parent, $children);
$this->name = $name;
$this->attributes = $attributes ?: [];
}