public function testSetGet()
{
$message = new Message();
$this->assertEmpty($message->getCharset());
$subject = 'Test Subject';
$message->setSubject($subject);
$this->assertEquals($subject, $message->getSubject(), 'Unable to set subject!');
$from = '*****@*****.**';
$message->setFrom($from);
$this->assertContains($from, $message->getFrom(), 'Unable to set from!');
$replyTo = '*****@*****.**';
$message->setReplyTo($replyTo);
$this->assertContains($replyTo, $message->getReplyTo(), 'Unable to set replyTo!');
$to = '*****@*****.**';
$message->setTo($to);
$this->assertContains($to, $message->getTo(), 'Unable to set to!');
$cc = '*****@*****.**';
$message->setCc($cc);
$this->assertContains($cc, $message->getCc(), 'Unable to set cc!');
$bcc = '*****@*****.**';
$message->setBcc($bcc);
$this->assertContains($bcc, $message->getBcc(), 'Unable to set bcc!');
$text = 'Text email';
$message->setTextBody($text);
$html = '<a>Html email</a>';
$message->setHtmlBody($html);
$template = 'template-id';
$message->setTemplateId($template);
$this->assertEquals($template, $message->getTemplateId());
$campaign = 'campaign-id';
$message->setCampaign($campaign);
$this->assertEquals($campaign, $message->getCampaign());
$description = 'description';
$message->setDescription($description);
$this->assertEquals($description, $message->getDescription());
$metadata = ['key' => 'value', 'key1' => 'value1'];
$message->setMetadata($metadata);
$this->assertEquals($metadata, $message->getMetadata());
}