/**
  * Set up a test case.
  *
  * @see WP_UnitTestCase::setup()
  */
 function setUp()
 {
     parent::setUp();
     try {
         require_once 'includes/Yubico/U2F.php';
         $this->u2f = new u2flib_server\U2F("http://demo.example.com");
         $this->provider = Two_Factor_FIDO_U2F::get_instance();
     } catch (Exception $e) {
         $this->markTestSkipped('Could not create U2F provider!');
     }
 }