/** * @covers \NewFrontiers\Framework\Output\Mailer::sendMail */ public function testSendMailFailNonExisting() { $mailer = new Mailer(); Configuration::getInstance()->readConfig(); $successfulMail = $mailer->sendMail(self::$notWorkingMailAdress, "test", "testnachricht"); $this->assertTrue($successfulMail == false || $successfulMail != 0); }