class FileTestBase

abstract class FileTestBase extends KernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'system',
    ];
    
    /**
     * A stream wrapper scheme to register for the test.
     *
     * @var string
     */
    protected $scheme;
    
    /**
     * A fully-qualified stream wrapper class name to register for the test.
     *
     * @var string
     */
    protected $classname;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        // \Drupal\KernelTests\KernelTestBase::bootKernel() sets a global override
        // for the default scheme because core relies on it in
        // file_default_scheme(). As we are creating the configuration here remove
        // the global override.
        unset($GLOBALS['config']['system.file']);
        \Drupal::configFactory()->getEditable('system.file')
            ->set('default_scheme', 'public')
            ->save();
    }
    
    /**
     * {@inheritdoc}
     */
    public function register(ContainerBuilder $container) {
        parent::register($container);
        $container->register('stream_wrapper.private', 'Drupal\\Core\\StreamWrapper\\PrivateStream')
            ->addTag('stream_wrapper', [
            'scheme' => 'private',
        ]);
        if (isset($this->scheme)) {
            $container->register('stream_wrapper.' . $this->scheme, $this->classname)
                ->addTag('stream_wrapper', [
                'scheme' => $this->scheme,
            ]);
        }
    }
    
    /**
     * {@inheritdoc}
     */
    protected function setUpFilesystem() {
        $public_file_directory = $this->siteDirectory . '/files';
        $private_file_directory = $this->siteDirectory . '/private';
        mkdir($this->siteDirectory, 0775);
        mkdir($this->siteDirectory . '/files', 0775);
        mkdir($this->siteDirectory . '/private', 0775);
        mkdir($this->siteDirectory . '/files/config/sync', 0775, TRUE);
        $this->setSetting('file_public_path', $public_file_directory);
        $this->setSetting('file_private_path', $private_file_directory);
        $this->setSetting('config_sync_directory', $this->siteDirectory . '/files/config/sync');
    }
    
    /**
     * Helper function to test the permissions of a file.
     *
     * @param $filepath
     *   String file path.
     * @param $expected_mode
     *   Octal integer like 0664 or 0777.
     * @param $message
     *   Optional message.
     */
    public function assertFilePermissions($filepath, $expected_mode, $message = NULL) {
        // Clear out PHP's file stat cache to be sure we see the current value.
        clearstatcache(TRUE, $filepath);
        // Mask out all but the last three octets.
        $actual_mode = fileperms($filepath) & 0777;
        // PHP on Windows has limited support for file permissions. Usually each of
        // "user", "group" and "other" use one octal digit (3 bits) to represent the
        // read/write/execute bits. On Windows, chmod() ignores the "group" and
        // "other" bits, and fileperms() returns the "user" bits in all three
        // positions. $expected_mode is updated to reflect this.
        if (str_starts_with(PHP_OS, 'WIN')) {
            // Reset the "group" and "other" bits.
            $expected_mode = $expected_mode & 0700;
            // Shift the "user" bits to the "group" and "other" positions also.
            $expected_mode = $expected_mode | $expected_mode >> 3 | $expected_mode >> 6;
        }
        if (!isset($message)) {
            $message = sprintf('Expected file permission to be %s, actually were %s.', decoct($actual_mode), decoct($expected_mode));
        }
        $this->assertEquals($expected_mode, $actual_mode, $message);
    }
    
    /**
     * Helper function to test the permissions of a directory.
     *
     * @param $directory
     *   String directory path.
     * @param $expected_mode
     *   Octal integer like 0664 or 0777.
     * @param $message
     *   Optional message.
     */
    public function assertDirectoryPermissions($directory, $expected_mode, $message = NULL) {
        // Clear out PHP's file stat cache to be sure we see the current value.
        clearstatcache(TRUE, $directory);
        // Mask out all but the last three octets.
        $actual_mode = fileperms($directory) & 0777;
        $expected_mode = $expected_mode & 0777;
        // PHP on Windows has limited support for file permissions. Usually each of
        // "user", "group" and "other" use one octal digit (3 bits) to represent the
        // read/write/execute bits. On Windows, chmod() ignores the "group" and
        // "other" bits, and fileperms() returns the "user" bits in all three
        // positions. $expected_mode is updated to reflect this.
        if (str_starts_with(PHP_OS, 'WIN')) {
            // Reset the "group" and "other" bits.
            $expected_mode = $expected_mode & 0700;
            // Shift the "user" bits to the "group" and "other" positions also.
            $expected_mode = $expected_mode | $expected_mode >> 3 | $expected_mode >> 6;
        }
        if (!isset($message)) {
            $message = sprintf('Expected directory permission to be %s, actually were %s.', decoct($expected_mode), decoct($actual_mode));
        }
        $this->assertEquals($expected_mode, $actual_mode, $message);
    }
    
    /**
     * Create a directory and assert it exists.
     *
     * @param string $path
     *   Optional string with a directory path. If none is provided, a random
     *   name in the site's files directory will be used.
     *
     * @return string
     *   The path to the directory.
     */
    public function createDirectory($path = NULL) {
        // A directory to operate on.
        if (!isset($path)) {
            $path = 'public://' . $this->randomMachineName();
        }
        $this->assertTrue(\Drupal::service('file_system')->mkdir($path));
        $this->assertDirectoryExists($path);
        return $path;
    }
    
    /**
     * Create a file and return the URI of it.
     *
     * @param $filepath
     *   Optional string specifying the file path. If none is provided then a
     *   randomly named file will be created in the site's files directory.
     * @param $contents
     *   Optional contents to save into the file. If a NULL value is provided an
     *   arbitrary string will be used.
     * @param $scheme
     *   Optional string indicating the stream scheme to use. Drupal core includes
     *   public, private, and temporary. The public wrapper is the default.
     *
     * @return string
     *   File URI.
     */
    public function createUri($filepath = NULL, $contents = NULL, $scheme = NULL) {
        if (!isset($filepath)) {
            // Prefix with non-latin characters to ensure that all file-related
            // tests work with international filenames.
            // cSpell:disable-next-line
            $filepath = 'Файл для тестирования ' . $this->randomMachineName();
        }
        if (!isset($scheme)) {
            $scheme = 'public';
        }
        $filepath = $scheme . '://' . $filepath;
        if (!isset($contents)) {
            $contents = "file_put_contents() doesn't seem to appreciate empty strings so let's put in some data.";
        }
        file_put_contents($filepath, $contents);
        $this->assertFileExists($filepath);
        return $filepath;
    }

}