function testNetwork2Int()
 {
     $str = "";
     $val = GSB_Updater::network2int($str);
     $this->assertEquals(0, $val);
     $str = "";
     $val = GSB_Updater::network2int($str);
     $this->assertEquals(1, $val);
     $str = "";
     $val = GSB_Updater::network2int($str);
     $this->assertEquals(16777216, $val);
     // now test failure case
     $str = "";
     try {
         $val = GSB_Updater::network2int($str);
         $this->assertTrue(FALSE);
     } catch (GSB_Exception $e) {
         $this->assertTrue(TRUE);
     }
 }