FileCopyTest.php

<?php

namespace Drupal\KernelTests\Core\File;

use Drupal\Core\File\Exception\FileExistsException;
use Drupal\Core\File\Exception\FileNotExistsException;
use Drupal\Core\File\FileSystem;
use Drupal\Core\File\FileSystemInterface;
use Drupal\Core\Site\Settings;

/**
 * Tests the unmanaged file copy function.
 *
 * @group File
 */
class FileCopyTest extends FileTestBase {
    
    /**
     * Copy a normal file.
     */
    public function testNormal() {
        // Create a file for testing
        $uri = $this->createUri();
        // Copying to a new name.
        $desired_filepath = 'public://' . $this->randomMachineName();
        $new_filepath = \Drupal::service('file_system')->copy($uri, $desired_filepath, FileSystemInterface::EXISTS_ERROR);
        $this->assertNotFalse($new_filepath, 'Copy was successful.');
        $this->assertEquals($desired_filepath, $new_filepath, 'Returned expected filepath.');
        $this->assertFileExists($uri);
        $this->assertFileExists($new_filepath);
        $this->assertFilePermissions($new_filepath, Settings::get('file_chmod_file', FileSystem::CHMOD_FILE));
        // Copying with rename.
        $desired_filepath = 'public://' . $this->randomMachineName();
        $this->assertNotFalse(file_put_contents($desired_filepath, ' '), 'Created a file so a rename will have to happen.');
        $newer_filepath = \Drupal::service('file_system')->copy($uri, $desired_filepath, FileSystemInterface::EXISTS_RENAME);
        $this->assertNotFalse($newer_filepath, 'Copy was successful.');
        $this->assertNotEquals($desired_filepath, $newer_filepath, 'Returned expected filepath.');
        $this->assertFileExists($uri);
        $this->assertFileExists($newer_filepath);
        $this->assertFilePermissions($newer_filepath, Settings::get('file_chmod_file', FileSystem::CHMOD_FILE));
        // TODO: test copying to a directory (rather than full directory/file path)
        // TODO: test copying normal files using normal paths (rather than only streams)
    }
    
    /**
     * Copy a non-existent file.
     */
    public function testNonExistent() {
        // Copy non-existent file
        $desired_filepath = $this->randomMachineName();
        $this->assertFileDoesNotExist($desired_filepath);
        $this->expectException(FileNotExistsException::class);
        $new_filepath = \Drupal::service('file_system')->copy($desired_filepath, $this->randomMachineName());
        $this->assertFalse($new_filepath, 'Copying a missing file fails.');
    }
    
    /**
     * Copy a file onto itself.
     */
    public function testOverwriteSelf() {
        // Create a file for testing
        $uri = $this->createUri();
        // Copy the file onto itself with renaming works.
        
        /** @var \Drupal\Core\File\FileSystemInterface $file_system */
        $file_system = \Drupal::service('file_system');
        $new_filepath = $file_system->copy($uri, $uri, FileSystemInterface::EXISTS_RENAME);
        $this->assertNotFalse($new_filepath, 'Copying onto itself with renaming works.');
        $this->assertNotEquals($uri, $new_filepath, 'Copied file has a new name.');
        $this->assertFileExists($uri);
        $this->assertFileExists($new_filepath);
        $this->assertFilePermissions($new_filepath, Settings::get('file_chmod_file', FileSystem::CHMOD_FILE));
        // Copy the file onto itself without renaming fails.
        $this->expectException(FileExistsException::class);
        $new_filepath = $file_system->copy($uri, $uri, FileSystemInterface::EXISTS_ERROR);
        $this->assertFalse($new_filepath, 'Copying onto itself without renaming fails.');
        $this->assertFileExists($uri);
        // Copy the file into same directory without renaming fails.
        $new_filepath = $file_system->copy($uri, $file_system->dirname($uri), FileSystemInterface::EXISTS_ERROR);
        $this->assertFalse($new_filepath, 'Copying onto itself fails.');
        $this->assertFileExists($uri);
        // Copy the file into same directory with renaming works.
        $new_filepath = $file_system->copy($uri, $file_system->dirname($uri), FileSystemInterface::EXISTS_RENAME);
        $this->assertNotFalse($new_filepath, 'Copying into same directory works.');
        $this->assertNotEquals($uri, $new_filepath, 'Copied file has a new name.');
        $this->assertFileExists($uri);
        $this->assertFileExists($new_filepath);
        $this->assertFilePermissions($new_filepath, Settings::get('file_chmod_file', FileSystem::CHMOD_FILE));
    }

}