/**
* Asserts whether email subject line contains a value
*
* @param string $subject Subject text to look for
* @param \Alex\MailCatcher\Message $emailMessage Message sent
* @param string $message What to say if it fails
* @param boolean $ignoreCase Whether to do case sensitive search
*/
public static function assertEmailSubjectContains($subject, \Alex\MailCatcher\Message $emailMessage, $message, $ignoreCase = false)
{
self::assertContains($subject, $emailMessage->getSubject(), $message, $ignoreCase);
}