--- /dev/null
+<?php
+
+namespace Drupal\Tests\menu_link_content\Functional;
+
+use Drupal\Component\Utility\SafeMarkup;
+use Drupal\menu_link_content\Entity\MenuLinkContent;
+use Drupal\Tests\BrowserTestBase;
+use Drupal\system\Entity\Menu;
+
+/**
+ * Tests handling of menu links hierarchies.
+ *
+ * @group Menu
+ */
+class LinksTest extends BrowserTestBase {
+
+ /**
+ * Modules to enable.
+ *
+ * @var array
+ */
+ public static $modules = ['router_test', 'menu_link_content'];
+
+ /**
+ * The menu link plugin manager.
+ *
+ * @var \Drupal\Core\Menu\MenuLinkManagerInterface $menuLinkManager
+ */
+ protected $menuLinkManager;
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ parent::setUp();
+
+ $this->menuLinkManager = \Drupal::service('plugin.manager.menu.link');
+
+ Menu::create([
+ 'id' => 'menu_test',
+ 'label' => 'Test menu',
+ 'description' => 'Description text',
+ ])->save();
+ }
+
+ /**
+ * Create a simple hierarchy of links.
+ */
+ public function createLinkHierarchy($module = 'menu_test') {
+ // First remove all the menu links in the menu.
+ $this->menuLinkManager->deleteLinksInMenu('menu_test');
+
+ // Then create a simple link hierarchy:
+ // - parent
+ // - child-1
+ // - child-1-1
+ // - child-1-2
+ // - child-2
+ $base_options = [
+ 'title' => 'Menu link test',
+ 'provider' => $module,
+ 'menu_name' => 'menu_test',
+ ];
+
+ $parent = $base_options + [
+ 'link' => ['uri' => 'internal:/menu-test/hierarchy/parent'],
+ ];
+ $link = MenuLinkContent::create($parent);
+ $link->save();
+ $links['parent'] = $link->getPluginId();
+
+ $child_1 = $base_options + [
+ 'link' => ['uri' => 'internal:/menu-test/hierarchy/parent/child'],
+ 'parent' => $links['parent'],
+ ];
+ $link = MenuLinkContent::create($child_1);
+ $link->save();
+ $links['child-1'] = $link->getPluginId();
+
+ $child_1_1 = $base_options + [
+ 'link' => ['uri' => 'internal:/menu-test/hierarchy/parent/child2/child'],
+ 'parent' => $links['child-1'],
+ ];
+ $link = MenuLinkContent::create($child_1_1);
+ $link->save();
+ $links['child-1-1'] = $link->getPluginId();
+
+ $child_1_2 = $base_options + [
+ 'link' => ['uri' => 'internal:/menu-test/hierarchy/parent/child2/child'],
+ 'parent' => $links['child-1'],
+ ];
+ $link = MenuLinkContent::create($child_1_2);
+ $link->save();
+ $links['child-1-2'] = $link->getPluginId();
+
+ $child_2 = $base_options + [
+ 'link' => ['uri' => 'internal:/menu-test/hierarchy/parent/child'],
+ 'parent' => $links['parent'],
+ ];
+ $link = MenuLinkContent::create($child_2);
+ $link->save();
+ $links['child-2'] = $link->getPluginId();
+
+ return $links;
+ }
+
+ /**
+ * Assert that at set of links is properly parented.
+ */
+ public function assertMenuLinkParents($links, $expected_hierarchy) {
+ foreach ($expected_hierarchy as $id => $parent) {
+ /* @var \Drupal\Core\Menu\MenuLinkInterface $menu_link_plugin */
+ $menu_link_plugin = $this->menuLinkManager->createInstance($links[$id]);
+ $expected_parent = isset($links[$parent]) ? $links[$parent] : '';
+
+ $this->assertEqual($menu_link_plugin->getParent(), $expected_parent, SafeMarkup::format('Menu link %id has parent of %parent, expected %expected_parent.', ['%id' => $id, '%parent' => $menu_link_plugin->getParent(), '%expected_parent' => $expected_parent]));
+ }
+ }
+
+ /**
+ * Assert that a link entity's created timestamp is set.
+ */
+ public function testCreateLink() {
+ $options = [
+ 'menu_name' => 'menu_test',
+ 'bundle' => 'menu_link_content',
+ 'link' => [['uri' => 'internal:/']],
+ ];
+ $link = MenuLinkContent::create($options);
+ $link->save();
+ // Make sure the changed timestamp is set.
+ $this->assertEqual($link->getChangedTime(), REQUEST_TIME, 'Creating a menu link sets the "changed" timestamp.');
+ $options = [
+ 'title' => 'Test Link',
+ ];
+ $link->link->options = $options;
+ $link->changed->value = 0;
+ $link->save();
+ // Make sure the changed timestamp is updated.
+ $this->assertEqual($link->getChangedTime(), REQUEST_TIME, 'Changing a menu link sets "changed" timestamp.');
+ }
+
+ /**
+ * Test automatic reparenting of menu links.
+ */
+ public function testMenuLinkReparenting($module = 'menu_test') {
+ // Check the initial hierarchy.
+ $links = $this->createLinkHierarchy($module);
+
+ $expected_hierarchy = [
+ 'parent' => '',
+ 'child-1' => 'parent',
+ 'child-1-1' => 'child-1',
+ 'child-1-2' => 'child-1',
+ 'child-2' => 'parent',
+ ];
+ $this->assertMenuLinkParents($links, $expected_hierarchy);
+
+ // Start over, and move child-1 under child-2, and check that all the
+ // children of child-1 have been moved too.
+ $links = $this->createLinkHierarchy($module);
+ /* @var \Drupal\Core\Menu\MenuLinkInterface $menu_link_plugin */
+ $this->menuLinkManager->updateDefinition($links['child-1'], ['parent' => $links['child-2']]);
+ // Verify that the entity was updated too.
+ $menu_link_plugin = $this->menuLinkManager->createInstance($links['child-1']);
+ $entity = \Drupal::entityManager()->loadEntityByUuid('menu_link_content', $menu_link_plugin->getDerivativeId());
+ $this->assertEqual($entity->getParentId(), $links['child-2']);
+
+ $expected_hierarchy = [
+ 'parent' => '',
+ 'child-1' => 'child-2',
+ 'child-1-1' => 'child-1',
+ 'child-1-2' => 'child-1',
+ 'child-2' => 'parent',
+ ];
+ $this->assertMenuLinkParents($links, $expected_hierarchy);
+
+ // Start over, and delete child-1, and check that the children of child-1
+ // have been reassigned to the parent.
+ $links = $this->createLinkHierarchy($module);
+ $this->menuLinkManager->removeDefinition($links['child-1']);
+
+ $expected_hierarchy = [
+ 'parent' => FALSE,
+ 'child-1-1' => 'parent',
+ 'child-1-2' => 'parent',
+ 'child-2' => 'parent',
+ ];
+ $this->assertMenuLinkParents($links, $expected_hierarchy);
+
+ // Try changing the parent at the entity level.
+ $definition = $this->menuLinkManager->getDefinition($links['child-1-2']);
+ $entity = MenuLinkContent::load($definition['metadata']['entity_id']);
+ $entity->parent->value = '';
+ $entity->save();
+
+ $expected_hierarchy = [
+ 'parent' => '',
+ 'child-1-1' => 'parent',
+ 'child-1-2' => '',
+ 'child-2' => 'parent',
+ ];
+ $this->assertMenuLinkParents($links, $expected_hierarchy);
+
+ // @todo Figure out what makes sense to test in terms of automatic
+ // re-parenting. https://www.drupal.org/node/2309531
+ }
+
+ /**
+ * Tests uninstalling a module providing default links.
+ */
+ public function testModuleUninstalledMenuLinks() {
+ \Drupal::service('module_installer')->install(['menu_test']);
+ \Drupal::service('router.builder')->rebuild();
+ \Drupal::service('plugin.manager.menu.link')->rebuild();
+ $menu_links = $this->menuLinkManager->loadLinksByRoute('menu_test.menu_test');
+ $this->assertEqual(count($menu_links), 1);
+ $menu_link = reset($menu_links);
+ $this->assertEqual($menu_link->getPluginId(), 'menu_test');
+
+ // Uninstall the module and ensure the menu link got removed.
+ \Drupal::service('module_installer')->uninstall(['menu_test']);
+ \Drupal::service('plugin.manager.menu.link')->rebuild();
+ $menu_links = $this->menuLinkManager->loadLinksByRoute('menu_test.menu_test');
+ $this->assertEqual(count($menu_links), 0);
+ }
+
+}