UpdateDeleteFileIfStaleTest.php

<?php

namespace Drupal\Tests\update\Kernel;

use Drupal\KernelTests\KernelTestBase;

/**
 * Tests the update_delete_file_if_stale() function.
 *
 * @group update
 */
class UpdateDeleteFileIfStaleTest extends KernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'system',
        'update',
    ];
    
    /**
     * Tests the deletion of stale files.
     */
    public function testUpdateDeleteFileIfStale() {
        $file_system = $this->container
            ->get('file_system');
        $file_name = $file_system->saveData($this->randomMachineName(), 'public://');
        $this->assertNotNull($file_name);
        // During testing the file change and the stale checking occurs in the same
        // request, so the beginning of request will be before the file changes and
        // REQUEST_TIME - $filectime is negative or zero. Set the maximum age to a
        // number even smaller than that.
        $this->config('system.file')
            ->set('temporary_maximum_age', -100000)
            ->save();
        $file_path = $file_system->realpath($file_name);
        update_delete_file_if_stale($file_path);
        $this->assertFileNotExists($file_path);
    }

}