/**
* Asserts that success message equals to expected message.
*
* @param UserIndex $userIndex
* @return void
*/
public function processAssert(UserIndex $userIndex)
{
$successMessage = $userIndex->getMessagesBlock()->getSuccessMessage();
\PHPUnit_Framework_Assert::assertEquals(self::SUCCESS_MESSAGE, $successMessage, 'Wrong success message is displayed.' . "\nExpected: " . self::SUCCESS_MESSAGE . "\nActual: " . $successMessage);
}