<?php namespace Drupal\Tests; use Drupal\Component\Render\MarkupInterface; /** * Provides helper methods for assertions. */ trait AssertHelperTrait { /** * Casts MarkupInterface objects into strings. * * @param string|array $value * The value to act on. * * @return mixed * The input value, with MarkupInterface objects casted to string. */ protected static function castSafeStrings($value) { if ($value instanceof MarkupInterface) { $value = (string) $value; } if (is_array($value)) { array_walk_recursive($value, function (&$item) { if ($item instanceof MarkupInterface) { $item = (string) $item; } }); } return $value; } }