MAGETWO-70395: Fixed pointless exception in logs every time a category with image is saved #9904

 - fixed unit tests and code style

Author: Oleksii Korshenko

app/code/Magento/Catalog/Model/Category/Attribute/Backend/Image.php

@@ -118,6 +118,17 @@ private function getImageUploader()
         return $this->imageUploader;
     }
 
+    /**
+     * Check if temporary file is available for new image upload.
+     *
+     * @param array $value
+     * @return bool
+     */
+    private function isTmpFileAvailable($value)
+    {
+        return is_array($value) && isset($value[0]['tmp_name']);
+    }
+
     /**
      * Save uploaded file and set its name to category
      *
@@ -128,17 +139,13 @@ public function afterSave($object)
     {
         $value = $object->getData($this->additionalData . $this->getAttribute()->getName());
 
-        if(isset($value[0]['tmp_name'])) {
-            // A file was just uploaded, so process it
-            if ($imageName = $this->getUploadedImageName($value)) {
-                try {
-                    $this->getImageUploader()->moveFileFromTmp($imageName);
-                } catch (\Exception $e) {
-                    $this->_logger->critical($e);
-                }
+        if ($this->isTmpFileAvailable($value) && $imageName = $this->getUploadedImageName($value)) {
+            try {
+                $this->getImageUploader()->moveFileFromTmp($imageName);
+            } catch (\Exception $e) {
+                $this->_logger->critical($e);
             }
         }
-
         return $this;
     }
 }

app/code/Magento/Catalog/Test/Unit/Model/Category/Attribute/Backend/ImageTest.php

@@ -240,7 +240,7 @@ public function testAfterSaveWithAdditionalData($value)
         $object = new \Magento\Framework\DataObject(
             [
                 'test_attribute' => $value,
-                '_additional_data_test_attribute' => [['name' => 'test1234.jpg']]
+                '_additional_data_test_attribute' => [['name' => 'test1234.jpg', 'tmp_name' => 'test-test-1234']]
             ]
         );
 
@@ -284,7 +284,7 @@ public function testAfterSaveWithExceptions()
 
         $object = new \Magento\Framework\DataObject(
             [
-                '_additional_data_test_attribute' => [['name' => 'test1234.jpg']]
+                '_additional_data_test_attribute' => [['name' => 'test1234.jpg', 'tmp_name' => 'test-test-1234']]
             ]
         );