CacheTest::setUp PHP Method

    public function setUp()
    {
        date_default_timezone_set('UTC');
        if (!file_exists('unit-tests/cache/')) {
            mkdir("unit-tests/cache/", 0766);
        }
        $iterator = new DirectoryIterator('unit-tests/cache/');
        foreach ($iterator as $item) {
            if (!$item->isDir()) {
                unlink($item->getPathname());
            }
        }
    }