class NavigationMenuBlockTest

class NavigationMenuBlockTest extends KernelTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'system',
    'navigation',
    'menu_test',
    'menu_link_content',
    'field',
    'block',
    'user',
    'link',
    'layout_builder',
  ];
  
  /**
   * The navigation block under test.
   *
   * @var \Drupal\navigation\Plugin\Block\NavigationMenuBlock
   */
  protected $navigationBlock;
  
  /**
   * The menu for testing.
   *
   * @var \Drupal\system\MenuInterface
   */
  protected $menu;
  
  /**
   * The menu link tree service.
   *
   * @var \Drupal\Core\Menu\MenuLinkTree
   */
  protected $linkTree;
  
  /**
   * The menu link plugin manager service.
   *
   * @var \Drupal\Core\Menu\MenuLinkManagerInterface
   */
  protected $menuLinkManager;
  
  /**
   * The block manager service.
   *
   * @var \Drupal\Core\Block\BlockManager
   */
  protected $blockManager;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->installEntitySchema('user');
    $this->installEntitySchema('menu_link_content');
    $account = User::create([
      'name' => $this->randomMachineName(),
      'status' => 1,
    ]);
    $account->save();
    $this->container
      ->get('current_user')
      ->setAccount($account);
    $this->menuLinkManager = $this->container
      ->get('plugin.manager.menu.link');
    $this->linkTree = $this->container
      ->get('menu.link_tree');
    $this->blockManager = $this->container
      ->get('plugin.manager.block');
    $routes = new RouteCollection();
    $requirements = [
      '_access' => 'TRUE',
    ];
    $options = [
      '_access_checks' => [
        'access_check.default',
      ],
    ];
    $special_options = $options + [
      '_no_path' => TRUE,
    ];
    $routes->add('example2', new Route('/example2', [], $requirements, $options));
    $routes->add('example4', new Route('/example4', [], $requirements, $options));
    $routes->add('example9', new Route('/example9', [], $requirements, $options));
    $routes->add('example11', new Route('/example11', [], $requirements, $options));
    // Mock special routes defined in system.routing.yml.
    $routes->add('<nolink>', new Route('', [], $requirements, $special_options));
    $routes->add('<button>', new Route('', [], $requirements, $special_options));
    // Define our RouteProvider mock.
    $mock_route_provider = new MockRouteProvider($routes);
    $this->container
      ->set('router.route_provider', $mock_route_provider);
    // Define our UrlGenerator service that use the new RouteProvider.
    $url_generator_non_bubbling = new UrlGenerator($mock_route_provider, $this->container
      ->get('path_processor_manager'), $this->container
      ->get('route_processor_manager'), $this->container
      ->get('request_stack'), $this->container
      ->getParameter('filter_protocols'));
    $url_generator = new MetadataBubblingUrlGenerator($url_generator_non_bubbling, $this->container
      ->get('renderer'));
    $this->container
      ->set('url_generator', $url_generator);
    // Add a new custom menu.
    $menu_name = 'mock';
    $label = $this->randomMachineName(16);
    $this->menu = Menu::create([
      'id' => $menu_name,
      'label' => $label,
      'description' => 'Description text',
    ]);
    $this->menu
      ->save();
    // This creates a tree with the following structure:
    // - 1 (nolink)
    // - 2
    //   - 3 (nolink)
    //     - 4
    //       - 9
    // - 5 (button)
    //   - 7 (button)
    //     - 10 (nolink)
    // - 6
    // - 8 (nolink)
    //   - 11
    //     - 12 (button)
    // With link 6 being the only external link.
    // phpcs:disable
    $links = [
      1 => MenuLinkMock::create([
        'id' => 'test.example1',
        'route_name' => '<nolink>',
        'title' => 'title 1',
        'parent' => '',
        'weight' => 0,
      ]),
      2 => MenuLinkMock::create([
        'id' => 'test.example2',
        'route_name' => 'example2',
        'title' => 'title 2',
        'parent' => '',
        'route_parameters' => [
          'foo' => 'bar',
        ],
        'weight' => 1,
      ]),
      3 => MenuLinkMock::create([
        'id' => 'test.example3',
        'route_name' => '<nolink>',
        'title' => 'title 3',
        'parent' => 'test.example2',
        'weight' => 2,
      ]),
      4 => MenuLinkMock::create([
        'id' => 'test.example4',
        'route_name' => 'example4',
        'title' => 'title 4',
        'parent' => 'test.example3',
        'weight' => 3,
      ]),
      5 => MenuLinkMock::create([
        'id' => 'test.example5',
        'route_name' => '<button>',
        'title' => 'title 5',
        'parent' => '',
        'expanded' => TRUE,
        'weight' => 4,
      ]),
      6 => MenuLinkMock::create([
        'id' => 'test.example6',
        'route_name' => '',
        'url' => 'https://www.drupal.org/',
        'title' => 'title 6',
        'parent' => '',
        'weight' => 5,
        'options' => [
          'attributes' => [
            'target' => '_blank',
            'class' => [
              'external-link',
            ],
          ],
        ],
      ]),
      7 => MenuLinkMock::create([
        'id' => 'test.example7',
        'route_name' => '<button>',
        'title' => 'title 7',
        'parent' => 'test.example5',
        'weight' => 6,
      ]),
      8 => MenuLinkMock::create([
        'id' => 'test.example8',
        'route_name' => '<nolink>',
        'title' => 'title 8',
        'parent' => '',
        'weight' => 7,
      ]),
      9 => MenuLinkMock::create([
        'id' => 'test.example9',
        'route_name' => 'example9',
        'title' => 'title 9',
        'parent' => 'test.example4',
        'weight' => 7,
      ]),
      10 => MenuLinkMock::create([
        'id' => 'test.example10',
        'route_name' => '<nolink>',
        'title' => 'title 10',
        'parent' => 'test.example7',
        'weight' => 7,
      ]),
      11 => MenuLinkMock::create([
        'id' => 'test.example11',
        'route_name' => 'example11',
        'title' => 'title 11',
        'parent' => 'test.example8',
        'weight' => 7,
      ]),
      12 => MenuLinkMock::create([
        'id' => 'test.example12',
        'route_name' => '<button>',
        'title' => 'title 12',
        'parent' => 'test.example11',
        'weight' => 7,
      ]),
    ];
    // phpcs:enable
    foreach ($links as $instance) {
      $this->menuLinkManager
        ->addDefinition($instance->getPluginId(), $instance->getPluginDefinition());
    }
  }
  
  /**
   * Tests calculation of a system navigation menu block's config dependencies.
   */
  public function testSystemMenuBlockConfigDependencies() : void {
    $block = Block::create([
      'plugin' => 'navigation_menu:' . $this->menu
        ->id(),
      'region' => 'content',
      'id' => 'machine_name',
      'theme' => 'stark',
    ]);
    $dependencies = $block->calculateDependencies()
      ->getDependencies();
    $expected = [
      'config' => [
        'system.menu.' . $this->menu
          ->id(),
      ],
      'module' => [
        'navigation',
        'system',
      ],
      'theme' => [
        'stark',
      ],
    ];
    $this->assertSame($expected, $dependencies);
  }
  
  /**
   * Tests the config start level and depth.
   */
  public function testConfigLevelDepth() : void {
    // Helper function to generate a configured navigation block instance.
    $place_block = function ($level, $depth) {
      return $this->blockManager
        ->createInstance('navigation_menu:' . $this->menu
        ->id(), [
        'region' => 'content',
        'id' => 'machine_name',
        'level' => $level,
        'depth' => $depth,
      ]);
    };
    // All the different navigation block instances we're going to test.
    $blocks = [
      'level_1_only' => $place_block(1, 0),
      'level_2_only' => $place_block(2, 0),
      'level_3_only' => $place_block(3, 0),
      'level_1_and_beyond' => $place_block(1, NavigationMenuBlock::NAVIGATION_MAX_DEPTH - 1),
      'level_2_and_beyond' => $place_block(2, NavigationMenuBlock::NAVIGATION_MAX_DEPTH - 1),
      'level_3_and_beyond' => $place_block(3, NavigationMenuBlock::NAVIGATION_MAX_DEPTH - 1),
    ];
    // Expectations are independent of the active trail.
    $expectations = [];
    $expectations['level_1_only'] = [
      'test.example1' => [],
      'test.example2' => [],
      'test.example5' => [],
      'test.example6' => [],
      'test.example8' => [],
    ];
    $expectations['level_2_only'] = [
      'test.example3' => [],
      'test.example7' => [],
      'test.example11' => [],
    ];
    $expectations['level_3_only'] = [
      'test.example4' => [],
      'test.example10' => [],
      'test.example12' => [],
    ];
    $expectations['level_1_and_beyond'] = [
      'test.example1' => [],
      'test.example2' => [
        'test.example3' => [
          'test.example4' => [],
        ],
      ],
      'test.example5' => [
        'test.example7' => [
          'test.example10' => [],
        ],
      ],
      'test.example6' => [],
      'test.example8' => [
        'test.example11' => [
          'test.example12' => [],
        ],
      ],
    ];
    $expectations['level_2_and_beyond'] = [
      'test.example3' => [
        'test.example4' => [
          'test.example9' => [],
        ],
      ],
      'test.example7' => [
        'test.example10' => [],
      ],
      'test.example11' => [
        'test.example12' => [],
      ],
    ];
    $expectations['level_3_and_beyond'] = [
      'test.example4' => [
        'test.example9' => [],
      ],
      'test.example10' => [],
      'test.example12' => [],
    ];
    // Scenario 1: test all navigation block instances when there's no active
    // trail.
    foreach ($blocks as $id => $block) {
      $block_build = $block->build();
      $items = $block_build['#items'] ?? [];
      $this->assertSame($expectations[$id], $this->convertBuiltMenuToIdTree($items), "Menu block {$id} with no active trail renders the expected tree.");
    }
    // Scenario 2: test all navigation block instances when there's an active
    // trail.
    $route = $this->container
      ->get('router.route_provider')
      ->getRouteByName('example3');
    $request = new Request();
    $request->attributes
      ->set(RouteObjectInterface::ROUTE_NAME, 'example3');
    $request->attributes
      ->set(RouteObjectInterface::ROUTE_OBJECT, $route);
    $request->setSession(new Session(new MockArraySessionStorage()));
    $this->container
      ->get('request_stack')
      ->push($request);
    // \Drupal\Core\Menu\MenuActiveTrail uses the cache collector pattern, which
    // includes static caching. Since this second scenario simulates a second
    // request, we must also simulate it for the MenuActiveTrail service, by
    // clearing the cache collector's static cache.
    \Drupal::service('menu.active_trail')->clear();
    foreach ($blocks as $id => $block) {
      $block_build = $block->build();
      $items = $block_build['#items'] ?? [];
      $this->assertSame($expectations[$id], $this->convertBuiltMenuToIdTree($items), "Menu navigation block {$id} with an active trail renders the expected tree.");
    }
  }
  
  /**
   * Tests the generated HTML markup.
   */
  public function testHtmlMarkup() {
    $block = $this->blockManager
      ->createInstance('navigation_menu:' . $this->menu
      ->id(), [
      'region' => 'content',
      'id' => 'machine_name',
      'level' => 1,
      'depth' => NavigationMenuBlock::NAVIGATION_MAX_DEPTH - 1,
    ]);
    $block_build = $block->build();
    $render = \Drupal::service('renderer')->renderRoot($block_build);
    $dom = new \DOMDocument();
    $dom->loadHTML((string) $render);
    $xpath = new \DOMXPath($dom);
    $items_query = [
      "//li[contains(@class,'toolbar-block__list-item')]/span/span[text()='title 1']",
      "//li[contains(@class,'toolbar-block__list-item')]/button/span[text()='title 2']",
      "//li[contains(@class,'toolbar-menu__item--level-1')]/button/span[text()='title 3']",
      "//li[contains(@class,'toolbar-menu__item--level-2')]/a[text()='title 4']",
      "//li[contains(@class,'toolbar-block__list-item')]/button/span[text()='title 5']",
      "//li[contains(@class,'toolbar-block__list-item')]/a/span[text()='title 6']",
      "//li[contains(@class,'toolbar-block__list-item')]/a[contains(@class, 'external-link')]",
      "//li[contains(@class,'toolbar-block__list-item')]/a[contains(@class, 'external-link')]",
      "//li[contains(@class,'toolbar-block__list-item')]/a[@target='_blank']",
      "//li[contains(@class,'toolbar-menu__item--level-1')]/button/span[text()='title 7']",
      "//li[contains(@class,'toolbar-block__list-item')]/button/span[text()='title 8']",
      "//li[contains(@class,'toolbar-menu__item--level-2')]/span[text()='title 10']",
      "//li[contains(@class,'toolbar-menu__item--level-1')]/button/span[text()='title 11']",
      "//li[contains(@class,'toolbar-menu__item--level-2')]/button[text()='title 12']",
    ];
    foreach ($items_query as $query) {
      $span = $xpath->query($query);
      $this->assertEquals(1, $span->length, $query);
    }
  }
  
  /**
   * Helper method to allow for easy menu link tree structure assertions.
   *
   * Converts the result of MenuLinkTree::build() in a "menu link ID tree".
   *
   * @param array $build
   *   The return value of MenuLinkTree::build()
   *
   * @return array
   *   The "menu link ID tree" representation of the given render array.
   */
  protected function convertBuiltMenuToIdTree(array $build) {
    $level = [];
    foreach (Element::children($build) as $id) {
      $level[$id] = [];
      if (isset($build[$id]['below'])) {
        $level[$id] = $this->convertBuiltMenuToIdTree($build[$id]['below']);
      }
    }
    return $level;
  }

}