MAGETWO-93969: Declaring allowed HTTP methods for controllers

Author: Dmytro Voskoboinikov

dev/tests/integration/testsuite/Magento/Checkout/Controller/CartTest.php

@@ -371,6 +371,7 @@ public function testMessageAtAddToCartWithRedirect()
         ];
         \Magento\TestFramework\Helper\Bootstrap::getInstance()->loadArea('frontend');
         $this->getRequest()->setPostValue($postData);
+        $this->getRequest()->setMethod('POST');
 
         $this->dispatch('checkout/cart/add');
 
@@ -406,6 +407,7 @@ public function testMessageAtAddToCartWithoutRedirect()
         ];
         \Magento\TestFramework\Helper\Bootstrap::getInstance()->loadArea('frontend');
         $this->getRequest()->setPostValue($postData);
+        $this->getRequest()->setMethod('POST');
 
         $this->dispatch('checkout/cart/add');