Issue #2149107 by longwave, xjm, Berdir: "View" area handler in Views gives fatal error.

core/modules/views/lib/Drupal/views/Plugin/views/area/View.php

@@ -107,7 +107,7 @@ public function render($empty = FALSE) {
     if (!empty($this->options['view_to_insert'])) {
       list($view_name, $display_id) = explode(':', $this->options['view_to_insert']);
 
-      $view = $this->viewStorage->load($view_name);
+      $view = $this->viewStorage->load($view_name)->getExecutable();
 
       if (empty($view) || !$view->access($display_id)) {
         return array();

core/modules/views/lib/Drupal/views/Tests/Handler/AreaViewTest.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\views\Tests\Handler\AreaViewTest.
+ */
+
+namespace Drupal\views\Tests\Handler;
+
+use Drupal\views\Tests\ViewUnitTestBase;
+use Drupal\views\Views;
+
+/**
+ * Tests the view area handler.
+ *
+ * @see \Drupal\views\Plugin\views\area\View
+ */
+class AreaViewTest extends ViewUnitTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = array('user');
+
+  /**
+   * Views used by this test.
+   *
+   * @var array
+   */
+  public static $testViews = array('test_area_view', 'test_simple_argument');
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getInfo() {
+    return array(
+      'name' => 'Area: View',
+      'description' => 'Tests the view area handler.',
+      'group' => 'Views Handlers',
+    );
+  }
+
+  /**
+   * Tests the view area handler.
+   */
+  public function testViewArea() {
+    $view = Views::getView('test_area_view');
+
+    $this->executeView($view);
+    $output = $view->render();
+    $output = drupal_render($output);
+    $this->assertTrue(strpos($output, 'view-test-simple-argument') !== FALSE, 'The test view is correctly embedded.');
+    $view->destroy();
+
+    $view->setArguments(array(27));
+    $this->executeView($view);
+    $output = $view->render();
+    $output = drupal_render($output);
+    $this->assertTrue(strpos($output, 'John') === FALSE, 'The test view is correctly embedded with inherited arguments.');
+    $this->assertTrue(strpos($output, 'George') !== FALSE, 'The test view is correctly embedded with inherited arguments.');
+    $view->destroy();
+  }
+
+}

core/modules/views/tests/modules/views_test_config/test_views/views.view.test_area_view.yml

+base_table: views_test_data
+core: '8'
+description: ''
+status: '1'
+display:
+  default:
+    display_options:
+      defaults:
+        fields: '0'
+        pager: '0'
+        pager_options: '0'
+        sorts: '0'
+      fields:
+        id:
+          field: id
+          id: id
+          relationship: none
+          table: views_test_data
+          plugin_id: numeric
+          provider: views_test_data
+      pager:
+        options:
+          offset: '0'
+        type: none
+      pager_options: {  }
+      sorts:
+        id:
+          field: id
+          id: id
+          order: ASC
+          relationship: none
+          table: views_test_data
+          plugin_id: numeric
+          provider: views_test_data
+      header:
+        view:
+          field: view
+          id: view
+          table: views
+          view_to_insert: test_simple_argument:default
+          inherit_arguments: 1
+          plugin_id: view
+          provider: views
+    display_plugin: default
+    display_title: Master
+    id: default
+    position: '0'
+label: ''
+id: test_area_view
+tag: ''