Test case for Cascading Tree Saves from root to child

gistfile1.aw

function testTheTreeWithCascadesForRootandOneChild() {
            $meta = $this->em->getClassMetadata(self::CATEGORY);
        
            $root = new Category();
            $root->setTitle("Root");
            $this->assertTrue($root instanceof Node);
        
            $child = new Category();
            $child->setTitle("child");
            $child->setParent($root);
        
            $this->em->persist($child);
            $this->em->flush();
            $this->em->clear();
        
            $root = $this->em->getRepository(self::CATEGORY)->find(1);
            $left = $meta->getReflectionProperty('lft')->getValue($root);
            $right = $meta->getReflectionProperty('rgt')->getValue($root);
            $level = $meta->getReflectionProperty('level')->getValue($root);
    }