class CommentDepthTest

class CommentDepthTest extends CommentViewsKernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'entity_test',
    ];
    
    /**
     * Views used by this test.
     *
     * @var array
     */
    public static $testViews = [
        'test_comment',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp($import_test_views = TRUE) : void {
        parent::setUp($import_test_views);
        $this->installEntitySchema('entity_test');
    }
    
    /**
     * Test the comment depth.
     */
    public function testCommentDepth() : void {
        $this->enableModules([
            'field',
        ]);
        $this->installConfig([
            'field',
        ]);
        // Create a comment field storage.
        $field_storage_comment = FieldStorageConfig::create([
            'field_name' => 'comment',
            'type' => 'comment',
            'entity_type' => 'entity_test',
        ]);
        $field_storage_comment->save();
        // Create a comment field which allows threading.
        $field_comment = FieldConfig::create([
            'field_name' => 'comment',
            'entity_type' => 'entity_test',
            'bundle' => 'entity_test',
            'settings' => [
                'default_mode' => CommentManagerInterface::COMMENT_MODE_THREADED,
            ],
        ]);
        $field_comment->save();
        // Create a test entity.
        $host = EntityTest::create([
            'name' => $this->randomString(),
        ]);
        $host->save();
        // Create the thread of comments.
        $comment1 = $this->commentStorage
            ->create([
            'uid' => $this->adminUser
                ->id(),
            'entity_type' => 'entity_test',
            'entity_id' => $host->id(),
            'comment_type' => 'entity_test',
            'field_name' => $field_storage_comment->getName(),
            'status' => 1,
        ]);
        $comment1->save();
        $comment2 = $this->commentStorage
            ->create([
            'uid' => $this->adminUser
                ->id(),
            'entity_type' => 'entity_test',
            'entity_id' => $host->id(),
            'comment_type' => 'entity_test',
            'field_name' => $field_storage_comment->getName(),
            'status' => 1,
            'pid' => $comment1->id(),
        ]);
        $comment2->save();
        $comment3 = $this->commentStorage
            ->create([
            'uid' => $this->adminUser
                ->id(),
            'entity_type' => 'entity_test',
            'entity_id' => $host->id(),
            'comment_type' => 'entity_test',
            'field_name' => $field_storage_comment->getName(),
            'status' => 1,
            'pid' => $comment2->id(),
        ]);
        $comment3->save();
        $view = Views::getView('test_comment');
        $view->setDisplay();
        $view->displayHandlers
            ->get('default')
            ->overrideOption('fields', [
            'thread' => [
                'table' => 'comment_field_data',
                'field' => 'thread',
                'id' => 'thread',
                'plugin_id' => 'comment_depth',
                'entity_type' => 'comment',
            ],
        ]);
        $view->save();
        $view->preview();
        // Check if the depth of the first comment is 0.
        $comment1_depth = $view->style_plugin
            ->getField(0, 'thread');
        $this->assertEquals(0, (string) $comment1_depth, "The depth of the first comment is 0.");
        // Check if the depth of the first comment is 1.
        $comment2_depth = $view->style_plugin
            ->getField(1, 'thread');
        $this->assertEquals(1, (string) $comment2_depth, "The depth of the second comment is 1.");
        // Check if the depth of the first comment is 2.
        $comment3_depth = $view->style_plugin
            ->getField(2, 'thread');
        $this->assertEquals(2, (string) $comment3_depth, "The depth of the third comment is 2.");
    }

}