Issue #2248501 by mbovan, Berdir: ImageItem should not have description and display properties

core/modules/image/src/Plugin/Field/FieldType/ImageItem.php

@@ -145,6 +145,9 @@ public static function schema(FieldStorageDefinitionInterface $field_definition)
   public static function propertyDefinitions(FieldStorageDefinitionInterface $field_definition) {
     $properties = parent::propertyDefinitions($field_definition);
 
+    unset($properties['display']);
+    unset($properties['description']);
+
     $properties['alt'] = DataDefinition::create('string')
       ->setLabel(t('Alternative text'))
       ->setDescription(t("Alternative image text, for the image's 'alt' attribute."));

core/modules/image/src/Tests/ImageItemTest.php

@@ -115,6 +115,11 @@ public function testImageItem() {
     $entity = entity_create('entity_test', array('mame' => $this->randomMachineName()));
     $entity->save();
 
+    // Test image item properties.
+    $expected = array('target_id', 'entity', 'alt', 'title', 'width', 'height');
+    $properties = $entity->getFieldDefinition('image_test')->getFieldStorageDefinition()->getPropertyDefinitions();
+    $this->assertEqual(array_keys($properties), $expected);
+
     // Test the generateSampleValue() method.
     $entity = entity_create('entity_test');
     $entity->image_test->generateSampleItems();