neo-go/pkg/consensus/payload_test.go

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package consensus
import (
"encoding/hex"
gio "io"
"math/rand"
"testing"
"time"
"github.com/CityOfZion/neo-go/pkg/core/transaction"
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"github.com/CityOfZion/neo-go/pkg/crypto/keys"
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"github.com/CityOfZion/neo-go/pkg/io"
"github.com/CityOfZion/neo-go/pkg/util"
"github.com/CityOfZion/neo-go/pkg/vm/opcode"
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"github.com/nspcc-dev/dbft/payload"
"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
)
var messageTypes = []messageType{
changeViewType,
prepareRequestType,
prepareResponseType,
commitType,
recoveryRequestType,
recoveryMessageType,
}
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func TestConsensusPayload_Setters(t *testing.T) {
var p Payload
p.SetVersion(1)
assert.EqualValues(t, 1, p.Version())
p.SetPrevHash(util.Uint256{1, 2, 3})
assert.Equal(t, util.Uint256{1, 2, 3}, p.PrevHash())
p.SetValidatorIndex(4)
assert.EqualValues(t, 4, p.ValidatorIndex())
p.SetHeight(11)
assert.EqualValues(t, 11, p.Height())
p.SetViewNumber(2)
assert.EqualValues(t, 2, p.ViewNumber())
p.SetType(payload.PrepareRequestType)
assert.Equal(t, payload.PrepareRequestType, p.Type())
pl := randomMessage(t, prepareRequestType)
p.SetPayload(pl)
require.Equal(t, pl, p.Payload())
require.Equal(t, pl, p.GetPrepareRequest())
pl = randomMessage(t, prepareResponseType)
p.SetPayload(pl)
require.Equal(t, pl, p.GetPrepareResponse())
pl = randomMessage(t, commitType)
p.SetPayload(pl)
require.Equal(t, pl, p.GetCommit())
pl = randomMessage(t, changeViewType)
p.SetPayload(pl)
require.Equal(t, pl, p.GetChangeView())
pl = randomMessage(t, recoveryRequestType)
p.SetPayload(pl)
require.Equal(t, pl, p.GetRecoveryRequest())
pl = randomMessage(t, recoveryMessageType)
p.SetPayload(pl)
require.Equal(t, pl, p.GetRecoveryMessage())
}
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func TestConsensusPayload_Hash(t *testing.T) {
dataHex := "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"
data, err := hex.DecodeString(dataHex)
require.NoError(t, err)
r := io.NewBinReaderFromBuf(data)
var p Payload
p.DecodeBinary(r)
require.NoError(t, err)
require.Equal(t, p.Hash().String(), "45859759c8491597804f1922773947e0d37bf54484af82f80cd642f7b063aa56")
}
func TestConsensusPayload_Serializable(t *testing.T) {
for _, mt := range messageTypes {
p := randomPayload(t, mt)
testSerializable(t, p, new(Payload))
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data := p.MarshalUnsigned()
pu := new(Payload)
require.NoError(t, pu.UnmarshalUnsigned(data))
p.Witness = transaction.Witness{}
require.Equal(t, p, pu)
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}
}
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func TestConsensusPayload_DecodeBinaryInvalid(t *testing.T) {
// PrepareResponse ConsensusPayload consists of:
// 46-byte common prefix
// 1-byte varint length of the payload (34),
// - 1-byte view number
// - 1-byte message type (PrepareResponse)
// - 32-byte preparation hash
// 1-byte delimiter (1)
// 2-byte for empty invocation and verification scripts
const (
lenIndex = 46
typeIndex = 47
delimeterIndex = 81
)
buf := make([]byte, 46+1+34+1+2)
expected := &Payload{
message: message{
Type: prepareResponseType,
payload: &prepareResponse{},
},
Witness: transaction.Witness{
InvocationScript: []byte{},
VerificationScript: []byte{},
},
}
// valid payload
buf[delimeterIndex] = 1
buf[lenIndex] = 34
buf[typeIndex] = byte(prepareResponseType)
r := io.NewBinReaderFromBuf(buf)
p := new(Payload)
p.DecodeBinary(r)
require.NoError(t, r.Err)
require.Equal(t, expected, p)
// invalid type
buf[typeIndex] = 0xFF
r = io.NewBinReaderFromBuf(buf)
new(Payload).DecodeBinary(r)
require.Error(t, r.Err)
// invalid format
buf[delimeterIndex] = 0
buf[typeIndex] = byte(prepareResponseType)
r = io.NewBinReaderFromBuf(buf)
new(Payload).DecodeBinary(r)
require.Error(t, r.Err)
// invalid message length
buf[delimeterIndex] = 1
buf[lenIndex] = 0xFF
buf[typeIndex] = byte(prepareResponseType)
r = io.NewBinReaderFromBuf(buf)
new(Payload).DecodeBinary(r)
require.Error(t, r.Err)
}
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func TestCommit_Serializable(t *testing.T) {
c := randomMessage(t, commitType)
testSerializable(t, c, new(commit))
}
func TestPrepareResponse_Serializable(t *testing.T) {
resp := randomMessage(t, prepareResponseType)
testSerializable(t, resp, new(prepareResponse))
}
func TestPrepareRequest_Serializable(t *testing.T) {
req := randomMessage(t, prepareRequestType)
testSerializable(t, req, new(prepareRequest))
}
func TestRecoveryRequest_Serializable(t *testing.T) {
req := randomMessage(t, recoveryRequestType)
testSerializable(t, req, new(recoveryRequest))
}
func TestRecoveryMessage_Serializable(t *testing.T) {
msg := randomMessage(t, recoveryMessageType)
testSerializable(t, msg, new(recoveryMessage))
}
func randomPayload(t *testing.T, mt messageType) *Payload {
p := &Payload{
message: message{
Type: mt,
ViewNumber: byte(rand.Uint32()),
payload: randomMessage(t, mt),
},
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version: 1,
validatorIndex: 13,
height: rand.Uint32(),
timestamp: rand.Uint32(),
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Witness: transaction.Witness{
InvocationScript: fillRandom(t, make([]byte, 3)),
VerificationScript: []byte{byte(opcode.PUSH0)},
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},
}
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fillRandom(t, p.prevHash[:])
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if mt == changeViewType {
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p.payload.(*changeView).newViewNumber = p.ViewNumber() + 1
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}
return p
}
func randomMessage(t *testing.T, mt messageType) io.Serializable {
switch mt {
case changeViewType:
return &changeView{
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timestamp: rand.Uint32(),
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}
case prepareRequestType:
return randomPrepareRequest(t)
case prepareResponseType:
resp := &prepareResponse{}
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fillRandom(t, resp.preparationHash[:])
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return resp
case commitType:
var c commit
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fillRandom(t, c.signature[:])
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return &c
case recoveryRequestType:
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return &recoveryRequest{timestamp: rand.Uint32()}
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case recoveryMessageType:
return randomRecoveryMessage(t)
default:
require.Fail(t, "invalid type")
return nil
}
}
func randomPrepareRequest(t *testing.T) *prepareRequest {
const txCount = 3
req := &prepareRequest{
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timestamp: rand.Uint32(),
nonce: rand.Uint64(),
transactionHashes: make([]util.Uint256, txCount),
minerTx: *newMinerTx(rand.Uint32()),
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}
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req.transactionHashes[0] = req.minerTx.Hash()
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for i := 1; i < txCount; i++ {
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fillRandom(t, req.transactionHashes[i][:])
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}
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fillRandom(t, req.nextConsensus[:])
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return req
}
func randomRecoveryMessage(t *testing.T) *recoveryMessage {
result := randomMessage(t, prepareRequestType)
require.IsType(t, (*prepareRequest)(nil), result)
prepReq := result.(*prepareRequest)
return &recoveryMessage{
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preparationPayloads: []*preparationCompact{
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{
ValidatorIndex: 1,
InvocationScript: fillRandom(t, make([]byte, 10)),
},
},
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commitPayloads: []*commitCompact{
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{
ViewNumber: 0,
ValidatorIndex: 1,
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Signature: [64]byte{1, 2, 3},
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InvocationScript: fillRandom(t, make([]byte, 20)),
},
{
ViewNumber: 0,
ValidatorIndex: 2,
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Signature: [64]byte{11, 3, 4, 98},
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InvocationScript: fillRandom(t, make([]byte, 10)),
},
},
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changeViewPayloads: []*changeViewCompact{
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{
Timestamp: rand.Uint32(),
ValidatorIndex: 3,
OriginalViewNumber: 3,
InvocationScript: fillRandom(t, make([]byte, 4)),
},
},
prepareRequest: &message{
Type: prepareRequestType,
payload: prepReq,
},
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}
}
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func TestPayload_Sign(t *testing.T) {
key, err := keys.NewPrivateKey()
require.NoError(t, err)
priv := &privateKey{key}
p := randomPayload(t, prepareRequestType)
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require.False(t, p.Verify(util.Uint160{}))
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require.NoError(t, p.Sign(priv))
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require.True(t, p.Verify(p.Witness.ScriptHash()))
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}
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func TestMessageType_String(t *testing.T) {
require.Equal(t, "ChangeView", changeViewType.String())
require.Equal(t, "PrepareRequest", prepareRequestType.String())
require.Equal(t, "PrepareResponse", prepareResponseType.String())
require.Equal(t, "Commit", commitType.String())
require.Equal(t, "RecoveryMessage", recoveryMessageType.String())
require.Equal(t, "RecoveryRequest", recoveryRequestType.String())
require.Equal(t, "UNKNOWN(0xff)", messageType(0xff).String())
}
func testSerializable(t *testing.T, expected, actual io.Serializable) {
w := io.NewBufBinWriter()
expected.EncodeBinary(w.BinWriter)
r := io.NewBinReaderFromBuf(w.Bytes())
actual.DecodeBinary(r)
require.Equal(t, expected, actual)
}
func fillRandom(t *testing.T, buf []byte) []byte {
r := rand.New(rand.NewSource(time.Now().Unix()))
_, err := gio.ReadFull(r, buf)
require.NoError(t, err)
return buf
}
func newMinerTx(nonce uint32) *transaction.Transaction {
return &transaction.Transaction{
Type: transaction.MinerType,
Version: 0,
Data: &transaction.MinerTX{
Nonce: rand.Uint32(),
},
Attributes: []transaction.Attribute{},
Inputs: []transaction.Input{},
Outputs: []transaction.Output{},
Scripts: []transaction.Witness{},
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Trimmed: false,
}
}