/**
* Assert that newsletter preview opened in new window and template content correct
*
* @param Browser $browser
* @param TemplatePreview $templatePreview
* @param Template $newsletter
* @return void
*/
public function processAssert(Browser $browser, TemplatePreview $templatePreview, Template $newsletter)
{
$browser->selectWindow();
$content = $templatePreview->getContent()->getPageContent();
$browser->closeWindow();
\PHPUnit_Framework_Assert::assertEquals($content, $newsletter->getText(), 'Template content not correct information.');
}