ApaiIO\Operations\CartClear::getCartId PHP 메소드

    public function getCartId()
    {
        return $this->getSingleOperationParameter('CartId');
    }

 public function testGetCartId()
 {
     $cart = new CartClear();
     $this->assertEquals(null, $cart->getCartId());
     $cart->setCartId('789');
     $this->assertEquals('789', $cart->getCartId());
 }