/**
* @return void
*/
public function testSendMailContainsMetadata()
{
$mailTransfer = new MailTransfer();
$mailTransfer->setMetadata(['Key1' => 'Value1']);
$this->mandrillMock->messages->expects($this->once())->method('sendTemplate')->with($this->anything(), $this->anything(), $this->arrayContainsKeyEqualTo('metadata', ['Key1' => 'Value1']), $this->anything(), $this->anything(), $this->anything());
$this->mailSender->sendMail($mailTransfer);
}
