function MenuLinkTreeTest::testCreateLinksInMenu

Tests creating links with an expected tree structure.

File

core/tests/Drupal/KernelTests/Core/Menu/MenuLinkTreeTest.php, line 92

Class

MenuLinkTreeTest

Tests the menu link tree.

Namespace

Code

public function testCreateLinksInMenu() : void {
    // This creates a tree with the following structure:
    // - 1
    // - 2
    //   - 3
    //     - 4
    // - 5
    //   - 7
    // - 6
    // - 8
    // With link 6 being the only external link.
    $links = [
        1 => MenuLinkMock::create([
            'id' => 'test.example1',
            'route_name' => 'example1',
            'title' => 'foo',
            'parent' => '',
        ]),
        2 => MenuLinkMock::create([
            'id' => 'test.example2',
            'route_name' => 'example2',
            'title' => 'bar',
            'parent' => 'test.example1',
            'route_parameters' => [
                'foo' => 'bar',
            ],
        ]),
        3 => MenuLinkMock::create([
            'id' => 'test.example3',
            'route_name' => 'example3',
            'title' => 'baz',
            'parent' => 'test.example2',
            'route_parameters' => [
                'baz' => 'qux',
            ],
        ]),
        4 => MenuLinkMock::create([
            'id' => 'test.example4',
            'route_name' => 'example4',
            'title' => 'qux',
            'parent' => 'test.example3',
        ]),
        5 => MenuLinkMock::create([
            'id' => 'test.example5',
            'route_name' => 'example5',
            'title' => 'title5',
            'parent' => '',
        ]),
        6 => MenuLinkMock::create([
            'id' => 'test.example6',
            'route_name' => '',
            'url' => 'https://www.drupal.org/',
            'title' => 'barbar',
            'parent' => '',
        ]),
        7 => MenuLinkMock::create([
            'id' => 'test.example7',
            'route_name' => 'example7',
            'title' => 'title7',
            'parent' => '',
        ]),
        8 => MenuLinkMock::create([
            'id' => 'test.example8',
            'route_name' => 'example8',
            'title' => 'title8',
            'parent' => '',
        ]),
    ];
    foreach ($links as $instance) {
        $this->menuLinkManager
            ->addDefinition($instance->getPluginId(), $instance->getPluginDefinition());
    }
    $parameters = new MenuTreeParameters();
    $tree = $this->linkTree
        ->load('mock', $parameters);
    $count = function (array $tree) {
        $sum = function ($carry, MenuLinkTreeElement $item) {
            return $carry + $item->count();
        };
        return array_reduce($tree, $sum);
    };
    $this->assertEquals(8, $count($tree));
    $parameters = new MenuTreeParameters();
    $parameters->setRoot('test.example2');
    $tree = $this->linkTree
        ->load($instance->getMenuName(), $parameters);
    $top_link = reset($tree);
    $this->assertCount(1, $top_link->subtree);
    $child = reset($top_link->subtree);
    $this->assertEquals($links[3]->getPluginId(), $child->link
        ->getPluginId());
    $height = $this->linkTree
        ->getSubtreeHeight('test.example2');
    $this->assertEquals(3, $height);
}