public function seeVisualChangesAndHideElement(WebGuy $I, $scenario)
 {
     $I->amOnPage("/VisualCeption/seeVisualChanges.php");
     $I->seeVisualChanges("hideTheIntro", "body", "#intro");
     $I->wait(1);
     // the test has to be called twice for comparison on the travis server
     $I->amOnPage("/VisualCeption/seeVisualChanges.php");
     $I->seeVisualChanges("hideTheIntro", "body", array("#intro"));
 }
 /**
  * Comparing a div, that change it's size
  */
 public function seeVisualChangesAfterSizeChanges(WebGuy $I, $scenario)
 {
     $I->amOnPage("/VisualCeption/notSameSize.php");
     $I->seeVisualChanges("getRedDiv", "div");
     $I->wait(1);
     // the test has to be called twice for comparison on the travis server
     $I->amOnPage("/VisualCeption/notSameSize.php");
     $I->seeVisualChanges("getRedDiv", "div");
 }
<?php

$I = new WebGuy($scenario);
$I->amOnPage("/VisualCeption/seeVisualChanges.php");
$I->seeVisualChanges("SimpleBlock", "#theblock");
// the test has to be called twice for comparison on the travis server
$I->wait(2);
$I->amOnPage("/VisualCeption/seeVisualChanges.php");
$I->seeVisualChanges("SimpleBlock", "#theblock");