Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

core/modules/menu_link_content/src/Entity/MenuLinkContent.php

@@ -132,13 +132,6 @@ class MenuLinkContent extends ContentEntityBase implements MenuLinkContentInterf
     return (int) $this->get('weight')->value;
   }
 
-  /**
-   * {@inheritdoc}
-   */
-  public function getChangedTime() {
-    return $this->get('changed')->value;
-  }
-
   /**
    * {@inheritdoc}
    */
@@ -261,9 +254,7 @@ class MenuLinkContent extends ContentEntityBase implements MenuLinkContentInterf
       ->setDescription(t('The text to be used for this link in the menu.'))
       ->setRequired(TRUE)
       ->setTranslatable(TRUE)
-      ->setSettings(array(
-        'max_length' => 255,
-      ))
+      ->setSetting('max_length', 255)
       ->setDisplayOptions('view', array(
         'label' => 'hidden',
         'type' => 'string',
@@ -279,9 +270,7 @@ class MenuLinkContent extends ContentEntityBase implements MenuLinkContentInterf
       ->setLabel(t('Description'))
       ->setDescription(t('Shown when hovering over the menu link.'))
       ->setTranslatable(TRUE)
-      ->setSettings(array(
-        'max_length' => 255,
-      ))
+      ->setSetting('max_length', 255)
       ->setDisplayOptions('view', array(
         'label' => 'hidden',
         'type' => 'string',

core/modules/menu_link_content/src/MenuLinkContentAccessControlHandler.php

@@ -51,7 +51,7 @@ class MenuLinkContentAccessControlHandler extends EntityAccessControlHandler imp
   /**
    * {@inheritdoc}
    */
-  protected function checkAccess(EntityInterface $entity, $operation, $langcode, AccountInterface $account) {
+  protected function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
     switch ($operation) {
       case 'view':
         // There is no direct viewing of a menu link, but still for purposes of

core/modules/menu_link_content/src/Plugin/migrate/source/MenuLink.php

@@ -25,6 +25,8 @@ class MenuLink extends DrupalSqlBase {
   public function query() {
     return $this->select('menu_links', 'ml')
       ->fields('ml')
+      ->orderby('ml.depth')
+      ->orderby('ml.mlid')
       ->condition('module', 'menu')
       ->condition('customized', 1);
   }

core/modules/menu_link_content/src/Tests/MenuLinkContentDeriverTest.php

@@ -9,7 +9,7 @@ namespace Drupal\menu_link_content\Tests;
 
 use Drupal\Component\Utility\SafeMarkup;
 use Drupal\Core\Menu\MenuTreeParameters;
-use Drupal\Core\StringTranslation\TranslationWrapper;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
 use Drupal\menu_link_content\Entity\MenuLinkContent;
 use Drupal\simpletest\KernelTestBase;
 use Symfony\Component\Routing\Route;
@@ -46,11 +46,12 @@ class MenuLinkContentDeriverTest extends KernelTestBase {
     \Drupal::service('router.builder')->rebuild();
 
     // Set up a custom menu link pointing to a specific path.
-    MenuLinkContent::create([
+    $parent = MenuLinkContent::create([
       'title' => '<script>alert("Welcome to the discovered jungle!")</script>',
       'link' => [['uri' => 'internal:/example-path']],
       'menu_name' => 'tools',
-    ])->save();
+    ]);
+    $parent->save();
     $menu_tree = \Drupal::menuTree()->load('tools', new MenuTreeParameters());
     $this->assertEqual(1, count($menu_tree));
     /** @var \Drupal\Core\Menu\MenuLinkTreeElement $tree_element */
@@ -70,9 +71,42 @@ class MenuLinkContentDeriverTest extends KernelTestBase {
     $tree_element = reset($menu_tree);
     $this->assertEqual('route_name_2', $tree_element->link->getRouteName());
     $title = $tree_element->link->getTitle();
-    $this->assertFalse($title instanceof TranslationWrapper);
+    $this->assertFalse($title instanceof TranslatableMarkup);
     $this->assertIdentical('<script>alert("Welcome to the discovered jungle!")</script>', $title);
     $this->assertFalse(SafeMarkup::isSafe($title));
+
+    // Create a hierarchy.
+    \Drupal::state()->set('menu_link_content_dynamic_route.routes', [
+      'route_name_1' => new Route('/example-path'),
+      'route_name_2' => new Route('/example-path/child'),
+    ]);
+    $child = MenuLinkContent::create([
+      'title' => 'Child',
+      'link' => [['uri' => 'entity:/example-path/child']],
+      'menu_name' => 'tools',
+      'parent' => 'menu_link_content:' . $parent->uuid(),
+    ]);
+    $child->save();
+    $parent->set('link', [['uri' => 'entity:/example-path']]);
+    $parent->save();
+    $menu_tree = \Drupal::menuTree()->load('tools', new MenuTreeParameters());
+    $this->assertEqual(1, count($menu_tree));
+    /** @var \Drupal\Core\Menu\MenuLinkTreeElement $tree_element */
+    $tree_element = reset($menu_tree);
+    $this->assertTrue($tree_element->hasChildren);
+    $this->assertEqual(1, count($tree_element->subtree));
+
+    // Edit child element link to use 'internal' instead of 'entity'.
+    $child->set('link', [['uri' => 'internal:/example-path/child']]);
+    $child->save();
+    \Drupal::service('plugin.manager.menu.link')->rebuild();
+
+    $menu_tree = \Drupal::menuTree()->load('tools', new MenuTreeParameters());
+    $this->assertEqual(1, count($menu_tree));
+    /** @var \Drupal\Core\Menu\MenuLinkTreeElement $tree_element */
+    $tree_element = reset($menu_tree);
+    $this->assertTrue($tree_element->hasChildren);
+    $this->assertEqual(1, count($tree_element->subtree));
   }
 
 }

core/modules/menu_link_content/src/Tests/MenuLinkContentTranslationUITest.php

@@ -20,7 +20,7 @@ class MenuLinkContentTranslationUITest extends ContentTranslationUITestBase {
   /**
    * {inheritdoc}
    */
-  protected $defaultCacheContexts = ['languages:language_interface', 'theme', 'url.path', 'url.query_args', 'user.permissions', 'user.roles:authenticated'];
+  protected $defaultCacheContexts = ['languages:language_interface', 'session', 'theme', 'url.path', 'url.query_args', 'user.permissions', 'user.roles:authenticated'];
 
   /**
    * Modules to enable.

core/modules/menu_link_content/src/Tests/Migrate/d6/MigrateMenuLinkTest.php

@@ -18,11 +18,9 @@ use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 class MigrateMenuLinkTest extends MigrateDrupal6TestBase {
 
   /**
-   * Modules to enable.
-   *
-   * @var array
+   * {@inheritdoc}
    */
-  public static $modules = array('link', 'menu_ui', 'menu_link_content');
+  public static $modules = array('menu_ui', 'menu_link_content');
 
   /**
    * {@inheritdoc}
@@ -31,8 +29,7 @@ class MigrateMenuLinkTest extends MigrateDrupal6TestBase {
     parent::setUp();
     $this->installSchema('system', ['router']);
     $this->installEntitySchema('menu_link_content');
-    $this->executeMigration('menu');
-    $this->executeMigration('d6_menu_links');
+    $this->executeMigrations(['menu', 'd6_menu_links']);
   }
 
   /**
@@ -47,7 +44,7 @@ class MigrateMenuLinkTest extends MigrateDrupal6TestBase {
     $this->assertIdentical(FALSE, $menu_link->isExpanded());
     $this->assertIdentical(['attributes' => ['title' => 'Test menu link 1']], $menu_link->link->options);
     $this->assertIdentical('internal:/user/login', $menu_link->link->uri);
-    $this->assertIdentical(15, $menu_link->getWeight());
+    $this->assertIdentical(-50, $menu_link->getWeight());
 
     $menu_link = MenuLinkContent::load(139);
     $this->assertIdentical('Test 2', $menu_link->getTitle());
@@ -57,7 +54,7 @@ class MigrateMenuLinkTest extends MigrateDrupal6TestBase {
     $this->assertIdentical(TRUE, $menu_link->isExpanded());
     $this->assertIdentical(['query' => 'foo=bar', 'attributes' => ['title' => 'Test menu link 2']], $menu_link->link->options);
     $this->assertIdentical('internal:/admin', $menu_link->link->uri);
-    $this->assertIdentical(12, $menu_link->getWeight());
+    $this->assertIdentical(-49, $menu_link->getWeight());
 
     $menu_link = MenuLinkContent::load(140);
     $this->assertIdentical('Drupal.org', $menu_link->getTitle());
@@ -67,7 +64,7 @@ class MigrateMenuLinkTest extends MigrateDrupal6TestBase {
     $this->assertIdentical(FALSE, $menu_link->isExpanded());
     $this->assertIdentical(['attributes' => ['title' => '']], $menu_link->link->options);
     $this->assertIdentical('https://www.drupal.org', $menu_link->link->uri);
-    $this->assertIdentical(0, $menu_link->getWeight());
+    $this->assertIdentical(-50, $menu_link->getWeight());
 
     // assert that missing title attributes don't stop or break migration.
     $menu_link = MenuLinkContent::load(393);
@@ -78,7 +75,7 @@ class MigrateMenuLinkTest extends MigrateDrupal6TestBase {
     $this->assertIdentical(FALSE, $menu_link->isExpanded());
     $this->assertIdentical([], $menu_link->link->options);
     $this->assertIdentical('internal:/user/login', $menu_link->link->uri);
-    $this->assertIdentical(15, $menu_link->getWeight());
+    $this->assertIdentical(-47, $menu_link->getWeight());
   }
 
 }

core/modules/menu_link_content/src/Tests/Migrate/d7/MigrateMenuLinkTest.php

@@ -20,9 +20,7 @@ use Drupal\migrate_drupal\Tests\d7\MigrateDrupal7TestBase;
 class MigrateMenuLinkTest extends MigrateDrupal7TestBase {
 
   /**
-   * Modules to enable.
-   *
-   * @var array
+   * {@inheritdoc}
    */
   public static $modules = array('link', 'menu_ui', 'menu_link_content');