public function testGetEmailToFriendUrl()
 {
     $product = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()->create('Magento\\Catalog\\Model\\Product');
     $product->setId(100);
     $category = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()->create('Magento\\Catalog\\Model\\Category');
     $category->setId(10);
     /** @var $objectManager \Magento\TestFramework\ObjectManager */
     $objectManager = \Magento\TestFramework\Helper\Bootstrap::getObjectManager();
     $objectManager->get('Magento\\Framework\\Registry')->register('current_category', $category);
     try {
         $this->assertStringEndsWith('sendfriend/product/send/id/100/cat_id/10/', $this->_helper->getEmailToFriendUrl($product));
         $objectManager->get('Magento\\Framework\\Registry')->unregister('current_category');
     } catch (\Exception $e) {
         $objectManager->get('Magento\\Framework\\Registry')->unregister('current_category');
         throw $e;
     }
 }