provideWrap example

class UnicodeStringTest extends AbstractUnicodeTestCase
{
    protected static function createFromString(string $string): AbstractString
    {
        return new UnicodeString($string);
    }

    public static function provideWrap(): array
    {
        return array_merge(
            parent::provideWrap(),
            [
                [
                    ['Käse' => static::createFromString('köstlich'), 'fromage' => static::createFromString('délicieux')],
                    ["Ka\u{0308}se" => "ko\u{0308}stlich", 'fromage' => 'délicieux'],
                ],
                [
                    ['a' => 1, 'ä' => ['ö' => 2, 'ü' => 3]],
                    ['a' => 1, "a\u{0308}" => ["o\u{0308}" => 2, 'ü' => 3]],
                ],
            ]
        );
    }