neo-go/pkg/core/mempool/mem_pool_test.go

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package mempool
import (
"sort"
"testing"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/internal/random"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type FeerStub struct {
lowPriority bool
sysFee util.Fixed8
netFee util.Fixed8
perByteFee util.Fixed8
}
func (fs *FeerStub) BlockHeight() uint32 {
return 0
}
func (fs *FeerStub) NetworkFee(*transaction.Transaction) util.Fixed8 {
return fs.netFee
}
func (fs *FeerStub) IsLowPriority(util.Fixed8) bool {
return fs.lowPriority
}
func (fs *FeerStub) FeePerByte(*transaction.Transaction) util.Fixed8 {
return fs.perByteFee
}
func (fs *FeerStub) SystemFee(*transaction.Transaction) util.Fixed8 {
return fs.sysFee
}
func testMemPoolAddRemoveWithFeer(t *testing.T, fs Feer) {
mp := NewMemPool(10)
tx := newMinerTX(0)
_, _, ok := mp.TryGetValue(tx.Hash())
require.Equal(t, false, ok)
require.NoError(t, mp.Add(tx, fs))
// Re-adding should fail.
require.Error(t, mp.Add(tx, fs))
tx2, _, ok := mp.TryGetValue(tx.Hash())
require.Equal(t, true, ok)
require.Equal(t, tx, tx2)
mp.Remove(tx.Hash())
_, _, ok = mp.TryGetValue(tx.Hash())
require.Equal(t, false, ok)
// Make sure nothing left in the mempool after removal.
assert.Equal(t, 0, len(mp.verifiedMap))
assert.Equal(t, 0, len(mp.verifiedTxes))
}
func TestMemPoolAddRemove(t *testing.T) {
var fs = &FeerStub{lowPriority: false}
t.Run("low priority", func(t *testing.T) { testMemPoolAddRemoveWithFeer(t, fs) })
fs.lowPriority = true
t.Run("high priority", func(t *testing.T) { testMemPoolAddRemoveWithFeer(t, fs) })
}
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func TestMemPoolAddRemoveWithInputsAndClaims(t *testing.T) {
mp := NewMemPool(50)
hash1, err := util.Uint256DecodeStringBE("a83ba6ede918a501558d3170a124324aedc89909e64c4ff2c6f863094f980b25")
require.NoError(t, err)
hash2, err := util.Uint256DecodeStringBE("629397158f852e838077bb2715b13a2e29b0a51c2157e5466321b70ed7904ce9")
require.NoError(t, err)
mpLessInputs := func(i, j int) bool {
return mp.inputs[i].Cmp(mp.inputs[j]) < 0
}
mpLessClaims := func(i, j int) bool {
return mp.claims[i].Cmp(mp.claims[j]) < 0
}
txm1 := newMinerTX(1)
txc1, claim1 := newClaimTX()
for i := 0; i < 5; i++ {
txm1.Inputs = append(txm1.Inputs, transaction.Input{PrevHash: hash1, PrevIndex: uint16(100 - i)})
claim1.Claims = append(claim1.Claims, transaction.Input{PrevHash: hash1, PrevIndex: uint16(100 - i)})
}
require.NoError(t, mp.Add(txm1, &FeerStub{}))
require.NoError(t, mp.Add(txc1, &FeerStub{}))
// Look inside.
assert.Equal(t, len(txm1.Inputs), len(mp.inputs))
assert.True(t, sort.SliceIsSorted(mp.inputs, mpLessInputs))
assert.Equal(t, len(claim1.Claims), len(mp.claims))
assert.True(t, sort.SliceIsSorted(mp.claims, mpLessClaims))
txm2 := newMinerTX(1)
txc2, claim2 := newClaimTX()
for i := 0; i < 10; i++ {
txm2.Inputs = append(txm2.Inputs, transaction.Input{PrevHash: hash2, PrevIndex: uint16(i)})
claim2.Claims = append(claim2.Claims, transaction.Input{PrevHash: hash2, PrevIndex: uint16(i)})
}
require.NoError(t, mp.Add(txm2, &FeerStub{}))
require.NoError(t, mp.Add(txc2, &FeerStub{}))
assert.Equal(t, len(txm1.Inputs)+len(txm2.Inputs), len(mp.inputs))
assert.True(t, sort.SliceIsSorted(mp.inputs, mpLessInputs))
assert.Equal(t, len(claim1.Claims)+len(claim2.Claims), len(mp.claims))
assert.True(t, sort.SliceIsSorted(mp.claims, mpLessClaims))
mp.Remove(txm1.Hash())
mp.Remove(txc2.Hash())
assert.Equal(t, len(txm2.Inputs), len(mp.inputs))
assert.True(t, sort.SliceIsSorted(mp.inputs, mpLessInputs))
assert.Equal(t, len(claim1.Claims), len(mp.claims))
assert.True(t, sort.SliceIsSorted(mp.claims, mpLessClaims))
require.NoError(t, mp.Add(txm1, &FeerStub{}))
require.NoError(t, mp.Add(txc2, &FeerStub{}))
assert.Equal(t, len(txm1.Inputs)+len(txm2.Inputs), len(mp.inputs))
assert.True(t, sort.SliceIsSorted(mp.inputs, mpLessInputs))
assert.Equal(t, len(claim1.Claims)+len(claim2.Claims), len(mp.claims))
assert.True(t, sort.SliceIsSorted(mp.claims, mpLessClaims))
mp.RemoveStale(func(t *transaction.Transaction) bool {
if t.Hash() == txc1.Hash() || t.Hash() == txm2.Hash() {
return false
}
return true
})
assert.Equal(t, len(txm1.Inputs), len(mp.inputs))
assert.True(t, sort.SliceIsSorted(mp.inputs, mpLessInputs))
assert.Equal(t, len(claim2.Claims), len(mp.claims))
assert.True(t, sort.SliceIsSorted(mp.claims, mpLessClaims))
}
func TestMemPoolVerifyInputs(t *testing.T) {
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mp := NewMemPool(10)
tx := newMinerTX(1)
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inhash1 := random.Uint256()
tx.Inputs = append(tx.Inputs, transaction.Input{PrevHash: inhash1, PrevIndex: 0})
require.Equal(t, true, mp.Verify(tx))
require.NoError(t, mp.Add(tx, &FeerStub{}))
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tx2 := newMinerTX(2)
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inhash2 := random.Uint256()
tx2.Inputs = append(tx2.Inputs, transaction.Input{PrevHash: inhash2, PrevIndex: 0})
require.Equal(t, true, mp.Verify(tx2))
require.NoError(t, mp.Add(tx2, &FeerStub{}))
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tx3 := newMinerTX(3)
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// Different index number, but the same PrevHash as in tx1.
tx3.Inputs = append(tx3.Inputs, transaction.Input{PrevHash: inhash1, PrevIndex: 1})
require.Equal(t, true, mp.Verify(tx3))
// The same input as in tx2.
tx3.Inputs = append(tx3.Inputs, transaction.Input{PrevHash: inhash2, PrevIndex: 0})
require.Equal(t, false, mp.Verify(tx3))
require.Error(t, mp.Add(tx3, &FeerStub{}))
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}
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func TestMemPoolVerifyClaims(t *testing.T) {
mp := NewMemPool(50)
tx1, claim1 := newClaimTX()
hash1, err := util.Uint256DecodeStringBE("a83ba6ede918a501558d3170a124324aedc89909e64c4ff2c6f863094f980b25")
require.NoError(t, err)
hash2, err := util.Uint256DecodeStringBE("629397158f852e838077bb2715b13a2e29b0a51c2157e5466321b70ed7904ce9")
require.NoError(t, err)
for i := 0; i < 10; i++ {
claim1.Claims = append(claim1.Claims, transaction.Input{PrevHash: hash1, PrevIndex: uint16(i)})
claim1.Claims = append(claim1.Claims, transaction.Input{PrevHash: hash2, PrevIndex: uint16(i)})
}
require.Equal(t, true, mp.Verify(tx1))
require.NoError(t, mp.Add(tx1, &FeerStub{}))
tx2, claim2 := newClaimTX()
for i := 0; i < 10; i++ {
claim2.Claims = append(claim2.Claims, transaction.Input{PrevHash: hash2, PrevIndex: uint16(i + 10)})
}
require.Equal(t, true, mp.Verify(tx2))
require.NoError(t, mp.Add(tx2, &FeerStub{}))
tx3, claim3 := newClaimTX()
claim3.Claims = append(claim3.Claims, transaction.Input{PrevHash: hash1, PrevIndex: 0})
require.Equal(t, false, mp.Verify(tx3))
require.Error(t, mp.Add(tx3, &FeerStub{}))
}
func TestMemPoolVerifyIssue(t *testing.T) {
mp := NewMemPool(50)
tx1 := newIssueTX()
require.Equal(t, true, mp.Verify(tx1))
require.NoError(t, mp.Add(tx1, &FeerStub{}))
tx2 := newIssueTX()
require.Equal(t, false, mp.Verify(tx2))
require.Error(t, mp.Add(tx2, &FeerStub{}))
}
func newIssueTX() *transaction.Transaction {
return &transaction.Transaction{
Type: transaction.IssueType,
Data: &transaction.IssueTX{},
Outputs: []transaction.Output{
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{
AssetID: random.Uint256(),
Amount: util.Fixed8FromInt64(42),
ScriptHash: random.Uint160(),
},
},
}
}
func newMinerTX(i uint32) *transaction.Transaction {
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return &transaction.Transaction{
Type: transaction.MinerType,
Data: &transaction.MinerTX{Nonce: i},
}
}
func newClaimTX() (*transaction.Transaction, *transaction.ClaimTX) {
cl := &transaction.ClaimTX{}
return &transaction.Transaction{
Type: transaction.ClaimType,
Data: cl,
}, cl
}
func TestOverCapacity(t *testing.T) {
var fs = &FeerStub{lowPriority: true}
const mempoolSize = 10
mp := NewMemPool(mempoolSize)
for i := 0; i < mempoolSize; i++ {
tx := newMinerTX(uint32(i))
require.NoError(t, mp.Add(tx, fs))
}
txcnt := uint32(mempoolSize)
require.Equal(t, mempoolSize, mp.Count())
require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
// Claim TX has more priority than ordinary lowprio, so it should easily
// fit into the pool.
claim := &transaction.Transaction{
Type: transaction.ClaimType,
Data: &transaction.ClaimTX{},
}
require.NoError(t, mp.Add(claim, fs))
require.Equal(t, mempoolSize, mp.Count())
require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
// Fees are also prioritized.
fs.netFee = util.Fixed8FromFloat(0.0001)
for i := 0; i < mempoolSize-1; i++ {
tx := newMinerTX(txcnt)
txcnt++
require.NoError(t, mp.Add(tx, fs))
require.Equal(t, mempoolSize, mp.Count())
require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
}
// Less prioritized txes are not allowed anymore.
fs.netFee = util.Fixed8FromFloat(0.00001)
tx := newMinerTX(txcnt)
txcnt++
require.Error(t, mp.Add(tx, fs))
require.Equal(t, mempoolSize, mp.Count())
require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
// But claim tx should still be there.
require.True(t, mp.ContainsKey(claim.Hash()))
// Low net fee, but higher per-byte fee is still a better combination.
fs.perByteFee = util.Fixed8FromFloat(0.001)
tx = newMinerTX(txcnt)
txcnt++
require.NoError(t, mp.Add(tx, fs))
require.Equal(t, mempoolSize, mp.Count())
require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
// High priority always wins over low priority.
fs.lowPriority = false
for i := 0; i < mempoolSize; i++ {
tx := newMinerTX(txcnt)
txcnt++
require.NoError(t, mp.Add(tx, fs))
require.Equal(t, mempoolSize, mp.Count())
require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
}
// Good luck with low priority now.
fs.lowPriority = true
tx = newMinerTX(txcnt)
require.Error(t, mp.Add(tx, fs))
require.Equal(t, mempoolSize, mp.Count())
require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
}
func TestGetVerified(t *testing.T) {
var fs = &FeerStub{lowPriority: true}
const mempoolSize = 10
mp := NewMemPool(mempoolSize)
txes := make([]*transaction.Transaction, 0, mempoolSize)
for i := 0; i < mempoolSize; i++ {
tx := newMinerTX(uint32(i))
txes = append(txes, tx)
require.NoError(t, mp.Add(tx, fs))
}
require.Equal(t, mempoolSize, mp.Count())
verTxes := mp.GetVerifiedTransactions()
require.Equal(t, mempoolSize, len(verTxes))
for _, txf := range verTxes {
require.Contains(t, txes, txf.Tx)
}
for _, tx := range txes {
mp.Remove(tx.Hash())
}
verTxes = mp.GetVerifiedTransactions()
require.Equal(t, 0, len(verTxes))
}
func TestRemoveStale(t *testing.T) {
var fs = &FeerStub{lowPriority: true}
const mempoolSize = 10
mp := NewMemPool(mempoolSize)
txes1 := make([]*transaction.Transaction, 0, mempoolSize/2)
txes2 := make([]*transaction.Transaction, 0, mempoolSize/2)
for i := 0; i < mempoolSize; i++ {
tx := newMinerTX(uint32(i))
if i%2 == 0 {
txes1 = append(txes1, tx)
} else {
txes2 = append(txes2, tx)
}
require.NoError(t, mp.Add(tx, fs))
}
require.Equal(t, mempoolSize, mp.Count())
mp.RemoveStale(func(t *transaction.Transaction) bool {
for _, tx := range txes2 {
if tx == t {
return true
}
}
return false
})
require.Equal(t, mempoolSize/2, mp.Count())
verTxes := mp.GetVerifiedTransactions()
for _, txf := range verTxes {
require.NotContains(t, txes1, txf.Tx)
require.Contains(t, txes2, txf.Tx)
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}
}