install(['olivero_test']); // Install Olivero and set it as the default theme. $theme_installer = \Drupal::service('theme_installer'); assert($theme_installer instanceof ThemeInstallerInterface); $theme_installer->install(['olivero'], TRUE); $system_theme_config = \Drupal::configFactory()->getEditable('system.theme'); $system_theme_config->set('default', 'olivero')->save(); // Create an article that will have no comments $article_no_comments = Node::create(['type' => 'article']); $article_no_comments->set('title', 'Article without comments'); // Enable comments $article_no_comments->set('comment', 2); $article_no_comments->save(); // Create an article that will have comments $article_with_comments = Node::create(['type' => 'article']); $article_with_comments->set('title', 'Article with comments'); // Enable comments $article_with_comments->set('comment', 2); $article_with_comments->save(); $values = [ // These values are for the entity that you're creating the comment for, not the comment itself. 'entity_type' => 'node', 'entity_id' => 2, 'field_name' => 'comment', 'uid' => 1, // These values are for the comment itself. 'comment_type' => 'comment', 'subject' => 'A comment', 'comment_body' => 'Body of comment', // Whether the comment is 'approved' or not. 'status' => 1, ]; // Create comment entities out of our field values $comment1 = Comment::create($values); $comment1->save(); $comment2 = Comment::create($values); $comment2->save(); } }