public function testMessageIDAccessors()
{
$this->iniSet('sendmail_from', '');
$mail = new \r8\Mail($this->getTestTransport());
$this->assertFalse($mail->messageIDExists());
$this->assertNull($mail->getMessageID());
$this->assertSame($mail, $mail->setMessageID("*****@*****.**"));
$this->assertTrue($mail->messageIDExists());
$this->assertSame("*****@*****.**", $mail->getMessageID());
$this->assertSame($mail, $mail->clearMessageID());
$this->assertFalse($mail->messageIDExists());
$this->assertNull($mail->getMessageID());
$this->assertSame($mail, $mail->setMessageID("Invalid\nChars" . chr(1) . " In Here"));
$this->assertTrue($mail->messageIDExists());
$this->assertSame("Invalid Chars In Here", $mail->getMessageID());
$this->assertSame($mail, $mail->setMessageID(" "));
$this->assertFalse($mail->messageIDExists());
$this->assertNull($mail->getMessageID());
}
