LegacyForumTest.php

<?php

namespace Drupal\Tests\forum\Kernel;

use Drupal\KernelTests\KernelTestBase;

/**
 * Tests Legacy forum code.
 *
 * @group forum
 * @group legacy
 */
class LegacyForumTest extends KernelTestBase {
    protected static $modules = [
        'comment',
        'forum',
        'system',
        'taxonomy',
        'text',
        'user',
    ];
    
    /**
     * The taxonomy term storage.
     *
     * @var \Drupal\taxonomy\TermStorage
     */
    protected $termStorage;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        parent::setUp();
        $this->installEntitySchema('taxonomy_term');
        $this->installConfig('forum');
        $this->termStorage = \Drupal::entityTypeManager()->getStorage('taxonomy_term');
    }
    
    /**
     * Tests the getParents() method.
     *
     * @expectedDeprecation Drupal\forum\ForumManager::getParents() is deprecated in drupal:8.1.0 and is removed from drupal:9.0.0. Call loadAllParents() on taxonomy term storage directly. See https://www.drupal.org/node/3069599
     */
    public function testGetParents() {
        // Add a forum.
        $forum = $this->termStorage
            ->create([
            'name' => 'Forum',
            'vid' => 'forums',
            'forum_container' => 1,
        ]);
        $forum->save();
        // Add a container.
        $subforum = $this->termStorage
            ->create([
            'name' => 'Subforum',
            'vid' => 'forums',
            'forum_container' => 0,
            'parent' => $forum->id(),
        ]);
        $subforum->save();
        $legacy_parents = \Drupal::service('forum_manager')->getParents($subforum->id());
        $parents = $this->termStorage
            ->loadAllParents($subforum->id());
        $this->assertSame($parents, $legacy_parents);
    }

}