public function setUp()
{
$tempZipsBaseDir = sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'package-zipper';
if (false == is_dir($tempZipsBaseDir)) {
mkdir($tempZipsBaseDir, 0777);
}
$tempZipsDir = $tempZipsBaseDir . DIRECTORY_SEPARATOR . uniqid();
mkdir($tempZipsDir, 0777);
$this->packageZipper = new PackageZipper($tempZipsDir);
}