#32596: Category Update API resets available_sort_by to use config value.

Author: engcom-Foxtrot

dev/tests/api-functional/testsuite/Magento/GraphQl/Catalog/CategoriesQuery/CategoryTreeTest.php

@@ -105,7 +105,7 @@ public function testCategoriesTree()
             $baseCategory['children'][0]['children'][1]['description']
         );
         $this->assertEquals('default-category', $baseCategory['url_key']);
-        $this->assertEquals([], $baseCategory['children'][0]['available_sort_by']);
+        $this->assertEquals(null, $baseCategory['children'][0]['available_sort_by']);
         $this->assertEquals('name', $baseCategory['children'][0]['default_sort_by']);
         $this->assertCount(7, $baseCategory['children']);
         $this->assertCount(2, $baseCategory['children'][0]['children']);
@@ -164,7 +164,7 @@ public function testRootCategoryTree()
             $baseCategory['children'][0]['children'][1]['description']
         );
         $this->assertEquals('default-category', $baseCategory['url_key']);
-        $this->assertEquals([], $baseCategory['children'][0]['available_sort_by']);
+        $this->assertEquals(null, $baseCategory['children'][0]['available_sort_by']);
         $this->assertEquals('name', $baseCategory['children'][0]['default_sort_by']);
         $this->assertCount(7, $baseCategory['children']);
         $this->assertCount(2, $baseCategory['children'][0]['children']);

dev/tests/integration/testsuite/Magento/Catalog/Model/CategoryTest.php

@@ -273,7 +273,7 @@ public function testGetProductCount(): void
 
     public function testGetAvailableSortBy(): void
     {
-        $this->assertEquals([], $this->_model->getAvailableSortBy());
+        $this->assertEquals(null, $this->_model->getAvailableSortBy());
         $this->_model->setData('available_sort_by', 'test,and,test');
         $this->assertEquals(['test', 'and', 'test'], $this->_model->getAvailableSortBy());
     }