Fixing a session issue with testing

class IndexControllerTest extends Zend_Test_PHPUnit_ControllerTestCase
{

    protected function setUp()
    {
        Zend_Session::$_unitTestEnabled = 1;
    }

    protected function tearDown()
    {
        Zend_Session::namespaceUnset('fooSession');
        Zend_Session::expireSessionCookie();
    }
}