Problems with testing Laravel 5 app & Sessions!

Hello Laravel Community,

i really enjoy learning more about the Laravel Framework, but now i ran into something i can not figure out myself. I want to write a test for checking if a page of my WebApp returns the response code 200 (OK). To do this i need to set a cookie (Session-Cookie) with the information of the user. I had wrote some code, but it isn't working. If anybody has an idea it would be awesome to share the info with me.

class MainTest extends TestCase {
    public function testUsersWithLoginProfilPage()
    {
        $this->session(['userrole' => '1']);
        $this->session(['username' => 'marcel']);
        $this->session(['userclass' => 'on13']);
        $this->session(['vorname' => 'Marcel']);
        $this->session(['nachname' => 'Example']);
        $this->session(['email' => 'marcel@example.com']);
        $response = $this->call('GET', 'users');
        $this->assertResponseOk();
    }
}

Greetings form Germany,

Marcel