public function testBindQuoteDestroy()
 {
     $quote = new \Magento\Framework\Object(['id' => '1']);
     $observer = new \Magento\Framework\Object(['event' => new \Magento\Framework\Object(['quote' => $quote])]);
     $this->visitor->bindQuoteDestroy($observer);
     $this->assertTrue($this->visitor->getDoQuoteDestroy());
 }