Fixed static tests for abstract attribute entity model

Author: andrewbess

app/code/Magento/Eav/Model/Entity/AbstractEntity.php

@@ -43,7 +43,7 @@ abstract class AbstractEntity extends AbstractResource implements EntityInterfac
     protected $attributeLoader;
 
     /**
-     * Connection name
+     * The connection name.
      *
      * @var string
      */
@@ -226,11 +226,13 @@ abstract class AbstractEntity extends AbstractResource implements EntityInterfac
      * @param Context $context
      * @param array $data
      * @param UniqueValidationInterface|null $uniqueValidator
+     * @param AttributeLoaderInterface|null $attributeLoader
      */
     public function __construct(
         Context $context,
         $data = [],
-        UniqueValidationInterface $uniqueValidator = null
+        ?UniqueValidationInterface $uniqueValidator = null,
+        ?AttributeLoaderInterface $attributeLoader = null
     ) {
         $this->_eavConfig = $context->getEavConfig();
         $this->_resource = $context->getResource();
@@ -240,8 +242,10 @@ public function __construct(
         $this->_universalFactory = $context->getUniversalFactory();
         $this->transactionManager = $context->getTransactionManager();
         $this->objectRelationProcessor = $context->getObjectRelationProcessor();
-        $this->uniqueValidator = $uniqueValidator ?:
-            ObjectManager::getInstance()->get(UniqueValidationInterface::class);
+        $this->uniqueValidator = $uniqueValidator
+            ?: ObjectManager::getInstance()->get(UniqueValidationInterface::class);
+        $this->attributeLoader = $attributeLoader
+            ?: ObjectManager::getInstance()->get(AttributeLoaderInterface::class);
         parent::__construct();
         $properties = get_object_vars($this);
         foreach ($data as $key => $value) {
@@ -547,7 +551,7 @@ public function isPartialSave($flag = null)
      */
     public function loadAllAttributes($object = null)
     {
-        return $this->getAttributeLoader()->loadAllAttributes($this, $object);
+        return $this->attributeLoader->loadAllAttributes($this, $object);
     }
 
     /**
@@ -1928,9 +1932,6 @@ protected function _isAttributeValueEmpty(AbstractAttribute $attribute, $value)
      */
     protected function getAttributeLoader()
     {
-        if ($this->attributeLoader === null) {
-            $this->attributeLoader= ObjectManager::getInstance()->get(AttributeLoaderInterface::class);
-        }
         return $this->attributeLoader;
     }