public function testGetId()
 {
     $us = new UserSession($this->container);
     $this->assertEquals(0, $us->getId());
     $this->container['sessionStorage']->user = array('id' => 2);
     $this->assertEquals(2, $us->getId());
     $this->container['sessionStorage']->user = array('id' => '2');
     $this->assertEquals(2, $us->getId());
 }