public function testParentIdAttributeAccessorAppendsNode() { $node = new Category(array('name' => 'lg', 'parent_id' => 5)); $node->save(); $this->assertEquals(5, $node->parent_id); $this->assertEquals(5, $node->getParentId()); $node->parent_id = null; $node->save(); $this->assertEquals(null, $node->parent_id); $this->assertTrue($node->isRoot()); }