LegacyCommonTest.php

<?php

namespace Drupal\KernelTests\Core\Common;

use Drupal\KernelTests\KernelTestBase;

/**
 * Tests deprecated legacy functions in common.inc.
 *
 * @group Common
 * @group legacy
 */
class LegacyCommonTest extends KernelTestBase {
    
    /**
     * Tests deprecation of the format_size() function.
     */
    public function testFormatSizeDeprecation() : void {
        $this->expectDeprecation('format_size() is deprecated in drupal:10.2.0 and is removed from drupal:11.0.0. Use \\Drupal\\Core\\StringTranslation\\ByteSizeMarkup::create($size, $langcode) instead. See https://www.drupal.org/node/2999981');
        $size = format_size(4053371676);
        $this->assertEquals('3.77 GB', $size);
        $this->assertEquals('@size GB', $size->getUntranslatedString());
    }

}