forked from TrueCloudLab/neoneo-go
217 lines
6.3 KiB
Go
217 lines
6.3 KiB
Go
package mempool
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import (
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"sort"
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"testing"
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"github.com/CityOfZion/neo-go/pkg/core/transaction"
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"github.com/CityOfZion/neo-go/pkg/internal/random"
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"github.com/CityOfZion/neo-go/pkg/util"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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type FeerStub struct {
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lowPriority bool
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sysFee util.Fixed8
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netFee util.Fixed8
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perByteFee util.Fixed8
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}
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func (fs *FeerStub) NetworkFee(*transaction.Transaction) util.Fixed8 {
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return fs.netFee
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}
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func (fs *FeerStub) IsLowPriority(*transaction.Transaction) bool {
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return fs.lowPriority
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}
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func (fs *FeerStub) FeePerByte(*transaction.Transaction) util.Fixed8 {
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return fs.perByteFee
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}
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func (fs *FeerStub) SystemFee(*transaction.Transaction) util.Fixed8 {
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return fs.sysFee
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}
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func testMemPoolAddRemoveWithFeer(t *testing.T, fs Feer) {
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mp := NewMemPool(10)
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tx := newMinerTX(0)
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_, ok := mp.TryGetValue(tx.Hash())
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require.Equal(t, false, ok)
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require.NoError(t, mp.Add(tx, fs))
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// Re-adding should fail.
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require.Error(t, mp.Add(tx, fs))
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tx2, ok := mp.TryGetValue(tx.Hash())
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require.Equal(t, true, ok)
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require.Equal(t, tx, tx2)
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mp.Remove(tx.Hash())
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_, ok = mp.TryGetValue(tx.Hash())
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require.Equal(t, false, ok)
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// Make sure nothing left in the mempool after removal.
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assert.Equal(t, 0, len(mp.verifiedMap))
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assert.Equal(t, 0, len(mp.verifiedTxes))
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}
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func TestMemPoolAddRemove(t *testing.T) {
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var fs = &FeerStub{lowPriority: false}
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t.Run("low priority", func(t *testing.T) { testMemPoolAddRemoveWithFeer(t, fs) })
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fs.lowPriority = true
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t.Run("high priority", func(t *testing.T) { testMemPoolAddRemoveWithFeer(t, fs) })
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}
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func TestMemPoolVerify(t *testing.T) {
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mp := NewMemPool(10)
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tx := newMinerTX(1)
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inhash1 := random.Uint256()
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tx.Inputs = append(tx.Inputs, transaction.Input{PrevHash: inhash1, PrevIndex: 0})
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require.Equal(t, true, mp.Verify(tx))
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require.NoError(t, mp.Add(tx, &FeerStub{}))
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tx2 := newMinerTX(2)
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inhash2 := random.Uint256()
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tx2.Inputs = append(tx2.Inputs, transaction.Input{PrevHash: inhash2, PrevIndex: 0})
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require.Equal(t, true, mp.Verify(tx2))
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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.
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tx3.Inputs = append(tx3.Inputs, transaction.Input{PrevHash: inhash1, PrevIndex: 1})
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require.Equal(t, true, mp.Verify(tx3))
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// The same input as in tx2.
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tx3.Inputs = append(tx3.Inputs, transaction.Input{PrevHash: inhash2, PrevIndex: 0})
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require.Equal(t, false, mp.Verify(tx3))
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require.Error(t, mp.Add(tx3, &FeerStub{}))
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}
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func newMinerTX(i uint32) *transaction.Transaction {
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return &transaction.Transaction{
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Type: transaction.MinerType,
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Data: &transaction.MinerTX{Nonce: i},
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}
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}
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func TestOverCapacity(t *testing.T) {
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var fs = &FeerStub{lowPriority: true}
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const mempoolSize = 10
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mp := NewMemPool(mempoolSize)
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for i := 0; i < mempoolSize; i++ {
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tx := newMinerTX(uint32(i))
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require.NoError(t, mp.Add(tx, fs))
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}
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txcnt := uint32(mempoolSize)
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require.Equal(t, mempoolSize, mp.Count())
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require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
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// Claim TX has more priority than ordinary lowprio, so it should easily
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// fit into the pool.
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claim := &transaction.Transaction{
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Type: transaction.ClaimType,
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Data: &transaction.ClaimTX{},
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}
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require.NoError(t, mp.Add(claim, fs))
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require.Equal(t, mempoolSize, mp.Count())
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require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
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// Fees are also prioritized.
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fs.netFee = util.Fixed8FromFloat(0.0001)
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for i := 0; i < mempoolSize-1; i++ {
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tx := newMinerTX(txcnt)
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txcnt++
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require.NoError(t, mp.Add(tx, fs))
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require.Equal(t, mempoolSize, mp.Count())
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require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
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}
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// Less prioritized txes are not allowed anymore.
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fs.netFee = util.Fixed8FromFloat(0.00001)
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tx := newMinerTX(txcnt)
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txcnt++
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require.Error(t, mp.Add(tx, fs))
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require.Equal(t, mempoolSize, mp.Count())
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require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
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// But claim tx should still be there.
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require.True(t, mp.ContainsKey(claim.Hash()))
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// Low net fee, but higher per-byte fee is still a better combination.
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fs.perByteFee = util.Fixed8FromFloat(0.001)
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tx = newMinerTX(txcnt)
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txcnt++
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require.NoError(t, mp.Add(tx, fs))
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require.Equal(t, mempoolSize, mp.Count())
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require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
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// High priority always wins over low priority.
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fs.lowPriority = false
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for i := 0; i < mempoolSize; i++ {
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tx := newMinerTX(txcnt)
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txcnt++
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require.NoError(t, mp.Add(tx, fs))
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require.Equal(t, mempoolSize, mp.Count())
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require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
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}
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// Good luck with low priority now.
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fs.lowPriority = true
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tx = newMinerTX(txcnt)
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require.Error(t, mp.Add(tx, fs))
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require.Equal(t, mempoolSize, mp.Count())
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require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
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}
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func TestGetVerified(t *testing.T) {
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var fs = &FeerStub{lowPriority: true}
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const mempoolSize = 10
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mp := NewMemPool(mempoolSize)
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txes := make([]*transaction.Transaction, 0, mempoolSize)
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for i := 0; i < mempoolSize; i++ {
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tx := newMinerTX(uint32(i))
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txes = append(txes, tx)
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require.NoError(t, mp.Add(tx, fs))
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}
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require.Equal(t, mempoolSize, mp.Count())
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verTxes := mp.GetVerifiedTransactions()
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require.Equal(t, mempoolSize, len(verTxes))
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for _, tx := range verTxes {
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require.Contains(t, txes, tx)
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}
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for _, tx := range txes {
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mp.Remove(tx.Hash())
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}
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verTxes = mp.GetVerifiedTransactions()
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require.Equal(t, 0, len(verTxes))
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}
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func TestRemoveStale(t *testing.T) {
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var fs = &FeerStub{lowPriority: true}
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const mempoolSize = 10
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mp := NewMemPool(mempoolSize)
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txes1 := make([]*transaction.Transaction, 0, mempoolSize/2)
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txes2 := make([]*transaction.Transaction, 0, mempoolSize/2)
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for i := 0; i < mempoolSize; i++ {
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tx := newMinerTX(uint32(i))
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if i%2 == 0 {
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txes1 = append(txes1, tx)
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} else {
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txes2 = append(txes2, tx)
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}
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require.NoError(t, mp.Add(tx, fs))
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}
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require.Equal(t, mempoolSize, mp.Count())
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mp.RemoveStale(func(t *transaction.Transaction) bool {
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for _, tx := range txes2 {
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if tx == t {
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return true
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}
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}
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return false
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})
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require.Equal(t, mempoolSize/2, mp.Count())
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verTxes := mp.GetVerifiedTransactions()
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for _, tx := range verTxes {
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require.NotContains(t, txes1, tx)
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require.Contains(t, txes2, tx)
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}
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}
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