MAGETWO-88631: Pr sprint 10 delivery

- fix class name
- restore test error response
- restore debug messaging

Author: cpartica

app/code/Magento/CatalogGraphQl/etc/di.xml

@@ -37,7 +37,7 @@
     <type name="Magento\Framework\GraphQl\Query\Resolver\Argument\FieldEntityAttributesPool">
         <arguments>
             <argument name="attributesInstances" xsi:type="array">
-                <item name="products" xsi:type="object">Magento\CatalogGraphQl\Model\Resolver\Products\FilterArgument\ProductEntityAttributesforAst</item>
+                <item name="products" xsi:type="object">Magento\CatalogGraphQl\Model\Resolver\Products\FilterArgument\ProductEntityAttributesForAst</item>
             </argument>
         </arguments>
     </type>

dev/tests/api-functional/framework/Magento/TestFramework/TestCase/GraphQl/Client.php

@@ -102,7 +102,7 @@ private function processErrors($responseBodyArray)
                     }
                 }
 
-                throw new \Exception('GraphQL response contains errors: ' . json_encode($responseBodyArray));
+                throw new \Exception('GraphQL response contains errors: ' . $errorMessage);
             }
             throw new \Exception('GraphQL responded with an unknown error: ' . json_encode($responseBodyArray));
         }

lib/internal/Magento/Framework/GraphQl/Query/QueryProcessor.php

@@ -61,6 +61,9 @@ public function process(
             $contextValue,
             $variableValues,
             $operationName
-        )->toArray(\GraphQL\Error\Debug::INCLUDE_DEBUG_MESSAGE | \GraphQL\Error\Debug::INCLUDE_TRACE);
+        )->toArray(
+            $this->exceptionFormatter->shouldShowDetail() ?
+                \GraphQL\Error\Debug::INCLUDE_DEBUG_MESSAGE | \GraphQL\Error\Debug::INCLUDE_TRACE : false
+        );
     }
 }