packet.ttl = 100;
        packet.rDataLength = 0; // Will be set by writeRDataWireFormat

        // TestNameServicePacket.writeRDataWireFormat returns 0
        int written = packet.writeResourceRecordWireFormat(dst, 0);
        assertEquals(12, written); // 2 (pointer) + 2 (type) + 2 (class) + 4 (ttl) + 2 (rDataLength) + 0 (rData)

        assertEquals((byte) 0xC0, dst[0]); // Pointer