public static function setUpBeforeClass()
{
$factory = new WP_UnitTest_Factory();
self::$user = $factory->user->create();
self::$posts = $factory->post->create_many(25, array('post_author' => self::$user));
self::commit_transaction();
}
public static function wpSetUpBeforeClass($factory)
{
self::$user_id = $factory->user->create();
self::$posts = $factory->post->create_many(5, array('post_author' => self::$user_id));
}