Satisfy static and integration tests.

Author: hostep

app/code/Magento/Bundle/Model/Product/CopyConstructor/Bundle.php

@@ -8,6 +8,9 @@
 use Magento\Catalog\Model\Product;
 use Magento\Catalog\Model\Product\Type;
 
+/**
+ * Provides duplicating bundle options and selections
+ */
 class Bundle implements \Magento\Catalog\Model\Product\CopyConstructorInterface
 {
     /**

dev/tests/integration/testsuite/Magento/Bundle/Controller/Adminhtml/ProductTest.php

@@ -10,6 +10,7 @@
 use Magento\Catalog\Api\ProductRepositoryInterface;
 use Magento\Catalog\Model\Product;
 use Magento\Catalog\Model\Product\Type;
+use Magento\Framework\App\Request\Http as HttpRequest;
 use Magento\Framework\Data\Form\FormKey;
 use Magento\Framework\Message\MessageInterface;
 use Magento\TestFramework\Helper\Bootstrap;
@@ -30,6 +31,7 @@ class ProductTest extends AbstractBackendController
     public function testDuplicateProduct()
     {
         $params = $this->getRequestParamsForDuplicate();
+        $this->getRequest()->setMethod(HttpRequest::METHOD_POST);
         $this->getRequest()->setParams(['type' => Type::TYPE_BUNDLE]);
         $this->getRequest()->setPostValue($params);
         $this->dispatch('backend/catalog/product/save');
@@ -49,6 +51,7 @@ public function testDuplicateProduct()
      * Get necessary request post params for creating and duplicating bundle product.
      *
      * @return array
+     * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
      */
     private function getRequestParamsForDuplicate()
     {