public function testGetters()
{
$message = new Message(1, 2, 3, 4, 'payload');
$this->assertEquals(1, $message->getType());
$this->assertEquals(2, $message->getCode());
$this->assertEquals(3, $message->getChecksum());
$this->assertEquals(4, $message->getHeader());
$this->assertEquals('payload', $message->getPayload());
$this->assertFalse($message->isChecksumValid());
}
