public function testInitByRequest()
{
$this->session->expects($this->once())->method('getSessionId')->will($this->returnValue('asdfhasdfjhkj2198sadf8sdf897'));
$this->visitor->initByRequest(null);
$this->assertEquals('asdfhasdfjhkj2198sadf8sdf897', $this->visitor->getSessionId());
$this->visitor->setData(['visitor_id' => 1]);
$this->visitor->initByRequest(null);
$this->assertNull($this->visitor->getSessionId());
}