nim-eth/tests/fuzzing/discoveryv5/fuzz_decode_message.nim

import
  testutils/fuzzing,
  ../../../eth/p2p/discoveryv5/messages_encoding

test:
  block testBlock:
    let decoded = decodeMessage(payload)

    if decoded.isOk():
      let message = decoded.get()
      var encoded: seq[byte]
      case message.kind
      of unused: break testBlock
      of ping: encoded = encodeMessage(message.ping, message.reqId)
      of pong: encoded = encodeMessage(message.pong, message.reqId)
      of findNode: encoded = encodeMessage(message.findNode, message.reqId)
      of nodes: encoded = encodeMessage(message.nodes, message.reqId)
      of talkReq: encoded = encodeMessage(message.talkReq, message.reqId)
      of talkResp: encoded = encodeMessage(message.talkResp, message.reqId)
      of regTopic, ticket, regConfirmation, topicQuery:
        break testBlock

      # This will hit assert because of issue:
      # https://github.com/status-im/nim-eth/issues/255
      # if encoded != payload:
      #   echo "payload: ", toHex(payload)
      #   echo "encoded: ", toHex(encoded)

      #   doAssert(false, "re-encoded result does not equal original payload")