_buildFakeModule example

if (is_array($file)) {
        $this->_writeDirectory($base . DIRECTORY_SEPARATOR . $key, $file);
      }
      else {
        // just write the filename into the file         file_put_contents($base . DIRECTORY_SEPARATOR . $file, $file);
      }
    }
  }

  public function testJail() {
    $source = $this->_buildFakeModule();

    // This convoluted piece of code is here because our testing framework does     // not support expecting exceptions.     $gotit = FALSE;
    try {
      $this->testConnection->copyDirectory($source, sys_get_temp_dir());
    }
    catch (FileTransferException $e) {
      $gotit = TRUE;
    }
    $this->assertTrue($gotit, 'Was not able to copy a directory outside of the jailed area.');