public function testMigrate()
{
$session = new ElggSession(new Elgg_Http_MockSessionStorage());
$session->start();
$session->set('foo', 5);
$id = $session->getId();
$this->assertTrue($session->migrate());
$this->assertTrue($session->has('foo'));
$this->assertNotEquals($id, $session->getId());
$this->assertTrue($session->has('__elgg_session'));
}