neoneo-go/pkg/core/mempool/mem_pool_test.go
2020-06-05 19:20:16 +03:00

260 lines
7.9 KiB
Go

package mempool
import (
"sort"
"testing"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type FeerStub struct {
lowPriority bool
feePerByte util.Fixed8
}
func (fs *FeerStub) IsLowPriority(util.Fixed8) bool {
return fs.lowPriority
}
func (fs *FeerStub) FeePerByte() util.Fixed8 {
return fs.feePerByte
}
func (fs *FeerStub) GetUtilityTokenBalance(uint160 util.Uint160) util.Fixed8 {
return util.Fixed8FromInt64(10000)
}
func testMemPoolAddRemoveWithFeer(t *testing.T, fs Feer) {
mp := NewMemPool(10)
tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx.Nonce = 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) })
}
func TestOverCapacity(t *testing.T) {
var fs = &FeerStub{lowPriority: true}
const mempoolSize = 10
mp := NewMemPool(mempoolSize)
for i := 0; i < mempoolSize; i++ {
tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx.Nonce = 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)))
// Fees are also prioritized.
for i := 0; i < mempoolSize; i++ {
tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx.Attributes = append(tx.Attributes, transaction.Attribute{
Usage: transaction.Hash1,
Data: util.Uint256{1, 2, 3, 4}.BytesBE(),
})
tx.NetworkFee = util.Fixed8FromFloat(0.0001)
tx.Nonce = txcnt
txcnt++
// size is 84, networkFee is 0.0001 => feePerByte is 0.00000119
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.
tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx.Attributes = append(tx.Attributes, transaction.Attribute{
Usage: transaction.Hash1,
Data: util.Uint256{1, 2, 3, 4}.BytesBE(),
})
tx.NetworkFee = util.Fixed8FromFloat(0.000001)
tx.Nonce = 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)))
// Low net fee, but higher per-byte fee is still a better combination.
tx = transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx.Nonce = txcnt
tx.NetworkFee = util.Fixed8FromFloat(0.00007)
txcnt++
// size is 51 (no attributes), networkFee is 0.00007 (<0.0001)
// => feePerByte is 0.00000137 (>0.00000119)
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 := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx.Nonce = 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 = transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx.Nonce = 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 := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx.Nonce = 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 := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx.Nonce = 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
}, &FeerStub{})
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)
}
}
func TestMemPoolFees(t *testing.T) {
mp := NewMemPool(10)
sender0 := util.Uint160{1, 2, 3}
tx0 := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx0.NetworkFee = util.Fixed8FromInt64(11000)
tx0.Sender = sender0
// insufficient funds to add transaction, but balance should be stored
require.Equal(t, false, mp.Verify(tx0, &FeerStub{}))
require.Error(t, mp.Add(tx0, &FeerStub{}))
require.Equal(t, 1, len(mp.fees))
require.Equal(t, utilityBalanceAndFees{
balance: util.Fixed8FromInt64(10000),
feeSum: 0,
}, mp.fees[sender0])
// no problems with adding another transaction with lower fee
tx1 := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx1.NetworkFee = util.Fixed8FromInt64(7000)
tx1.Sender = sender0
require.NoError(t, mp.Add(tx1, &FeerStub{}))
require.Equal(t, 1, len(mp.fees))
require.Equal(t, utilityBalanceAndFees{
balance: util.Fixed8FromInt64(10000),
feeSum: util.Fixed8FromInt64(7000),
}, mp.fees[sender0])
// balance shouldn't change after adding one more transaction
tx2 := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx2.NetworkFee = util.Fixed8FromFloat(3000)
tx2.Sender = sender0
require.NoError(t, mp.Add(tx2, &FeerStub{}))
require.Equal(t, 2, len(mp.verifiedTxes))
require.Equal(t, 1, len(mp.fees))
require.Equal(t, utilityBalanceAndFees{
balance: util.Fixed8FromInt64(10000),
feeSum: util.Fixed8FromInt64(10000),
}, mp.fees[sender0])
// can't add more transactions as we don't have enough GAS
tx3 := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
tx3.NetworkFee = util.Fixed8FromFloat(0.5)
tx3.Sender = sender0
require.Equal(t, false, mp.Verify(tx3, &FeerStub{}))
require.Error(t, mp.Add(tx3, &FeerStub{}))
require.Equal(t, 1, len(mp.fees))
require.Equal(t, utilityBalanceAndFees{
balance: util.Fixed8FromInt64(10000),
feeSum: util.Fixed8FromInt64(10000),
}, mp.fees[sender0])
// check whether sender's fee updates correctly
mp.RemoveStale(func(t *transaction.Transaction) bool {
if t == tx2 {
return true
}
return false
}, &FeerStub{})
require.Equal(t, 1, len(mp.fees))
require.Equal(t, utilityBalanceAndFees{
balance: util.Fixed8FromInt64(10000),
feeSum: util.Fixed8FromFloat(3000),
}, mp.fees[sender0])
// there should be nothing left
mp.RemoveStale(func(t *transaction.Transaction) bool {
if t == tx3 {
return true
}
return false
}, &FeerStub{})
require.Equal(t, 0, len(mp.fees))
}