class FileDeleteTest

class FileDeleteTest extends FileTestBase {
    
    /**
     * Delete a normal file.
     */
    public function testNormal() {
        // Create a file for testing
        $uri = $this->createUri();
        // Delete a regular file
        $this->assertTrue(\Drupal::service('file_system')->delete($uri), 'Deleted worked.');
        $this->assertFileDoesNotExist($uri);
    }
    
    /**
     * Try deleting a missing file.
     */
    public function testMissing() {
        // Try to delete a non-existing file
        $this->assertTrue(\Drupal::service('file_system')->delete('public://' . $this->randomMachineName()), 'Returns true when deleting a non-existent file.');
    }
    
    /**
     * Try deleting a directory.
     */
    public function testDirectory() {
        // A directory to operate on.
        $directory = $this->createDirectory();
        // Try to delete a directory.
        try {
            \Drupal::service('file_system')->delete($directory);
            $this->fail('Expected NotRegularFileException');
        } catch (NotRegularFileException $e) {
            // Ignore.
        }
        $this->assertDirectoryExists($directory);
    }

}