public function testGetStringId() { $_id = new MongoId(); $string_id = (string) $_id; $model = new TestSchema(); $model->_id = $_id; $model->object = $_id; $this->assertEquals($string_id, $model->getStringId()); $this->assertEquals($string_id, $model->getStringId('object')); $this->assertEquals($string_id, $model->stringId); $this->assertEquals('', $model->getStringId('undefined')); }