Issue #2057207 by dawehner, olli: Fixed Unable to select the 'Default' view...

Issue #2057207 by dawehner, olli: Fixed Unable to select the 'Default' view mode in views entity row plugin.

core/modules/views/lib/Drupal/views/Plugin/views/row/EntityRow.php

@@ -95,7 +95,7 @@ public static function create(ContainerInterface $container, array $configuratio
   protected function defineOptions() {
     $options = parent::defineOptions();
 
-    $options['view_mode'] = array('default' => '');
+    $options['view_mode'] = array('default' => 'default');
 
     return $options;
   }
@@ -119,7 +119,7 @@ public function buildOptionsForm(&$form, &$form_state) {
    * Return the main options, which are shown in the summary title.
    */
   protected function buildViewModeOptions() {
-    $options = array();
+    $options = array('default' => t('Default'));
     $view_modes = entity_get_view_modes($this->entityType);
     foreach ($view_modes as $mode => $settings) {
       $options[$mode] = $settings['label'];

core/modules/views/lib/Drupal/views/Tests/Plugin/RowEntityTest.php

@@ -53,6 +53,7 @@ protected function setUp() {
 
     $this->installSchema('system', array('menu_router'));
     $this->installSchema('taxonomy', array('taxonomy_term_data', 'taxonomy_term_hierarchy'));
+    $this->installConfig(array('taxonomy'));
   }
 
   /**
@@ -69,6 +70,15 @@ public function testEntityRow() {
     $this->content = drupal_render($this->content);
 
     $this->assertText($term->label(), 'The rendered entity appears as row in the view.');
+
+    // Tests the available view mode options.
+    $form = array();
+    $form_state = array();
+    $form_state['view'] = $view->storage;
+    $view->rowPlugin->buildOptionsForm($form, $form_state);
+
+    $this->assertTrue(isset($form['view_mode']['#options']['full']), 'Ensure that the full view mode is available');
+    $this->assertTrue(isset($form['view_mode']['#options']['default']), 'Ensure that the default view mode is available');
   }
 
   /**