mirror of
https://github.com/nspcc-dev/neo-go.git
synced 2024-11-26 19:42:23 +00:00
471 lines
17 KiB
Go
471 lines
17 KiB
Go
package mempool
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import (
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"errors"
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"math/big"
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"sort"
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"testing"
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"time"
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"github.com/nspcc-dev/neo-go/pkg/config/netmode"
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"github.com/nspcc-dev/neo-go/pkg/core/transaction"
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"github.com/nspcc-dev/neo-go/pkg/internal/random"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
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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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feePerByte int64
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p2pSigExt bool
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blockHeight uint32
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}
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var balance = big.NewInt(10000000)
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func (fs *FeerStub) FeePerByte() int64 {
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return fs.feePerByte
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}
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func (fs *FeerStub) BlockHeight() uint32 {
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return fs.blockHeight
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}
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func (fs *FeerStub) GetUtilityTokenBalance(uint160 util.Uint160) *big.Int {
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return balance
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}
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func (fs *FeerStub) P2PSigExtensionsEnabled() bool {
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return fs.p2pSigExt
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}
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func testMemPoolAddRemoveWithFeer(t *testing.T, fs Feer) {
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mp := New(10)
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tx := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx.Nonce = 0
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tx.Signers = []transaction.Signer{{Account: util.Uint160{1, 2, 3}}}
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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(), fs)
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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 TestMemPoolRemoveStale(t *testing.T) {
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mp := New(5)
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txs := make([]*transaction.Transaction, 5)
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for i := range txs {
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txs[i] = transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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txs[i].Nonce = uint32(i)
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txs[i].Signers = []transaction.Signer{{Account: util.Uint160{1, 2, 3}}}
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require.NoError(t, mp.Add(txs[i], &FeerStub{blockHeight: uint32(i)}))
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}
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staleTxs := make(chan *transaction.Transaction, 5)
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f := func(tx *transaction.Transaction) {
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staleTxs <- tx
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}
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mp.SetResendThreshold(5, f)
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isValid := func(tx *transaction.Transaction) bool {
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return tx.Nonce%2 == 0
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}
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mp.RemoveStale(isValid, &FeerStub{blockHeight: 5}) // 0 + 5
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require.Eventually(t, func() bool { return len(staleTxs) == 1 }, time.Second, time.Millisecond*100)
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require.Equal(t, txs[0], <-staleTxs)
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mp.RemoveStale(isValid, &FeerStub{blockHeight: 7}) // 2 + 5
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require.Eventually(t, func() bool { return len(staleTxs) == 1 }, time.Second, time.Millisecond*100)
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require.Equal(t, txs[2], <-staleTxs)
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mp.RemoveStale(isValid, &FeerStub{blockHeight: 10}) // 0 + 2 * 5
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require.Eventually(t, func() bool { return len(staleTxs) == 1 }, time.Second, time.Millisecond*100)
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require.Equal(t, txs[0], <-staleTxs)
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mp.RemoveStale(isValid, &FeerStub{blockHeight: 15}) // 0 + 3 * 5
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// tx[2] should appear, so it is also checked that tx[0] wasn't sent on height 15.
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mp.RemoveStale(isValid, &FeerStub{blockHeight: 22}) // 2 + 4 * 5
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require.Eventually(t, func() bool { return len(staleTxs) == 1 }, time.Second, time.Millisecond*100)
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require.Equal(t, txs[2], <-staleTxs)
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// panic if something is sent after this.
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close(staleTxs)
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require.Len(t, staleTxs, 0)
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}
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func TestMemPoolAddRemove(t *testing.T) {
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var fs = &FeerStub{}
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testMemPoolAddRemoveWithFeer(t, fs)
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}
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func TestOverCapacity(t *testing.T) {
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var fs = &FeerStub{}
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const mempoolSize = 10
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mp := New(mempoolSize)
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for i := 0; i < mempoolSize; i++ {
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tx := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx.Nonce = uint32(i)
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tx.Signers = []transaction.Signer{{Account: util.Uint160{1, 2, 3}}}
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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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bigScript := make([]byte, 64)
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bigScript[0] = byte(opcode.PUSH1)
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bigScript[1] = byte(opcode.RET)
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// Fees are also prioritized.
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for i := 0; i < mempoolSize; i++ {
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tx := transaction.New(netmode.UnitTestNet, bigScript, 0)
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tx.NetworkFee = 10000
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tx.Nonce = txcnt
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tx.Signers = []transaction.Signer{{Account: util.Uint160{1, 2, 3}}}
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txcnt++
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// size is ~90, networkFee is 10000 => feePerByte is 119
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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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tx := transaction.New(netmode.UnitTestNet, bigScript, 0)
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tx.NetworkFee = 100
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tx.Nonce = txcnt
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tx.Signers = []transaction.Signer{{Account: util.Uint160{1, 2, 3}}}
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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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// Low net fee, but higher per-byte fee is still a better combination.
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tx = transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx.Nonce = txcnt
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tx.NetworkFee = 7000
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tx.Signers = []transaction.Signer{{Account: util.Uint160{1, 2, 3}}}
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txcnt++
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// size is ~51 (small script), networkFee is 7000 (<10000)
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// => feePerByte is 137 (>119)
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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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for i := 0; i < mempoolSize; i++ {
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tx := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx.NetworkFee = 8000
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tx.Nonce = txcnt
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tx.Signers = []transaction.Signer{{Account: util.Uint160{1, 2, 3}}}
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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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tx = transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx.Nonce = txcnt
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tx.NetworkFee = 7000
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tx.Signers = []transaction.Signer{{Account: util.Uint160{1, 2, 3}}}
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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{}
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const mempoolSize = 10
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mp := New(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 := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx.Nonce = uint32(i)
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tx.Signers = []transaction.Signer{{Account: util.Uint160{1, 2, 3}}}
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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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require.ElementsMatch(t, txes, verTxes)
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for _, tx := range txes {
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mp.Remove(tx.Hash(), fs)
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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{}
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const mempoolSize = 10
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mp := New(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 := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx.Nonce = uint32(i)
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tx.Signers = []transaction.Signer{{Account: util.Uint160{1, 2, 3}}}
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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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}, &FeerStub{})
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require.Equal(t, mempoolSize/2, mp.Count())
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verTxes := mp.GetVerifiedTransactions()
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for _, txf := range verTxes {
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require.NotContains(t, txes1, txf)
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require.Contains(t, txes2, txf)
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}
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}
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func TestMemPoolFees(t *testing.T) {
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mp := New(10)
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sender0 := util.Uint160{1, 2, 3}
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tx0 := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx0.NetworkFee = balance.Int64() + 1
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tx0.Signers = []transaction.Signer{{Account: sender0}}
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// insufficient funds to add transaction, and balance shouldn't be stored
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require.Equal(t, false, mp.Verify(tx0, &FeerStub{}))
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require.Error(t, mp.Add(tx0, &FeerStub{}))
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require.Equal(t, 0, len(mp.fees))
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balancePart := new(big.Int).Div(balance, big.NewInt(4))
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// no problems with adding another transaction with lower fee
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tx1 := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx1.NetworkFee = balancePart.Int64()
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tx1.Signers = []transaction.Signer{{Account: sender0}}
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require.NoError(t, mp.Add(tx1, &FeerStub{}))
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require.Equal(t, 1, len(mp.fees))
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require.Equal(t, utilityBalanceAndFees{
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balance: balance,
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feeSum: big.NewInt(tx1.NetworkFee),
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}, mp.fees[sender0])
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// balance shouldn't change after adding one more transaction
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tx2 := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx2.NetworkFee = new(big.Int).Sub(balance, balancePart).Int64()
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tx2.Signers = []transaction.Signer{{Account: sender0}}
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require.NoError(t, mp.Add(tx2, &FeerStub{}))
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require.Equal(t, 2, len(mp.verifiedTxes))
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require.Equal(t, 1, len(mp.fees))
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require.Equal(t, utilityBalanceAndFees{
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balance: balance,
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feeSum: balance,
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}, mp.fees[sender0])
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// can't add more transactions as we don't have enough GAS
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tx3 := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx3.NetworkFee = 1
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tx3.Signers = []transaction.Signer{{Account: sender0}}
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require.Equal(t, false, mp.Verify(tx3, &FeerStub{}))
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require.Error(t, mp.Add(tx3, &FeerStub{}))
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require.Equal(t, 1, len(mp.fees))
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require.Equal(t, utilityBalanceAndFees{
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balance: balance,
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feeSum: balance,
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}, mp.fees[sender0])
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// check whether sender's fee updates correctly
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mp.RemoveStale(func(t *transaction.Transaction) bool {
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if t == tx2 {
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return true
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}
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return false
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}, &FeerStub{})
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require.Equal(t, 1, len(mp.fees))
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require.Equal(t, utilityBalanceAndFees{
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balance: balance,
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feeSum: big.NewInt(tx2.NetworkFee),
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}, mp.fees[sender0])
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// there should be nothing left
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mp.RemoveStale(func(t *transaction.Transaction) bool {
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if t == tx3 {
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return true
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}
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return false
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}, &FeerStub{})
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require.Equal(t, 0, len(mp.fees))
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}
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func TestMempoolItemsOrder(t *testing.T) {
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sender0 := util.Uint160{1, 2, 3}
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tx1 := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx1.NetworkFee = new(big.Int).Div(balance, big.NewInt(8)).Int64()
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tx1.Signers = []transaction.Signer{{Account: sender0}}
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tx1.Attributes = []transaction.Attribute{{Type: transaction.HighPriority}}
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item1 := item{txn: tx1}
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tx2 := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx2.NetworkFee = new(big.Int).Div(balance, big.NewInt(16)).Int64()
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tx2.Signers = []transaction.Signer{{Account: sender0}}
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tx2.Attributes = []transaction.Attribute{{Type: transaction.HighPriority}}
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item2 := item{txn: tx2}
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tx3 := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx3.NetworkFee = new(big.Int).Div(balance, big.NewInt(2)).Int64()
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tx3.Signers = []transaction.Signer{{Account: sender0}}
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item3 := item{txn: tx3}
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tx4 := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx4.NetworkFee = new(big.Int).Div(balance, big.NewInt(4)).Int64()
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tx4.Signers = []transaction.Signer{{Account: sender0}}
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item4 := item{txn: tx4}
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require.True(t, item1.CompareTo(item2) > 0)
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require.True(t, item2.CompareTo(item1) < 0)
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require.True(t, item1.CompareTo(item3) > 0)
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require.True(t, item3.CompareTo(item1) < 0)
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require.True(t, item1.CompareTo(item4) > 0)
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require.True(t, item4.CompareTo(item1) < 0)
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require.True(t, item2.CompareTo(item3) > 0)
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require.True(t, item3.CompareTo(item2) < 0)
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require.True(t, item2.CompareTo(item4) > 0)
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require.True(t, item4.CompareTo(item2) < 0)
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require.True(t, item3.CompareTo(item4) > 0)
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require.True(t, item4.CompareTo(item3) < 0)
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}
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func TestMempoolAddRemoveConflicts(t *testing.T) {
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capacity := 6
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mp := New(capacity)
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var fs = &FeerStub{
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p2pSigExt: true,
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}
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getConflictsTx := func(netFee int64, hashes ...util.Uint256) *transaction.Transaction {
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tx := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
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tx.NetworkFee = netFee
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tx.Nonce = uint32(random.Int(0, 1e4))
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tx.Signers = []transaction.Signer{{Account: util.Uint160{1, 2, 3}}}
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tx.Attributes = make([]transaction.Attribute, len(hashes))
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for i, h := range hashes {
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tx.Attributes[i] = transaction.Attribute{
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Type: transaction.ConflictsT,
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Value: &transaction.Conflicts{
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Hash: h,
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},
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}
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}
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_, ok := mp.TryGetValue(tx.Hash())
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require.Equal(t, false, ok)
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return tx
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}
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// tx1 in mempool and does not conflicts with anyone
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smallNetFee := int64(3)
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tx1 := getConflictsTx(smallNetFee)
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require.NoError(t, mp.Add(tx1, fs))
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// tx2 conflicts with tx1 and has smaller netfee (Step 2, negative)
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tx2 := getConflictsTx(smallNetFee-1, tx1.Hash())
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require.True(t, errors.Is(mp.Add(tx2, fs), ErrConflictsAttribute))
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// tx3 conflicts with mempooled tx1 and has larger netfee => tx1 should be replaced by tx3 (Step 2, positive)
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tx3 := getConflictsTx(smallNetFee+1, tx1.Hash())
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require.NoError(t, mp.Add(tx3, fs))
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require.Equal(t, 1, mp.Count())
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require.Equal(t, 1, len(mp.conflicts))
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require.Equal(t, []util.Uint256{tx3.Hash()}, mp.conflicts[tx1.Hash()])
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// tx1 still does not conflicts with anyone, but tx3 is mempooled, conflicts with tx1
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// and has larger netfee => tx1 shouldn't be added again (Step 1, negative)
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require.True(t, errors.Is(mp.Add(tx1, fs), ErrConflictsAttribute))
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// tx2 can now safely be added because conflicting tx1 is not in mempool => we
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// cannot check that tx2 is signed by tx1.Sender
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require.NoError(t, mp.Add(tx2, fs))
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require.Equal(t, 1, len(mp.conflicts))
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require.Equal(t, []util.Uint256{tx3.Hash(), tx2.Hash()}, mp.conflicts[tx1.Hash()])
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// mempooled tx4 conflicts with tx5, but tx4 has smaller netfee => tx4 should be replaced by tx5 (Step 1, positive)
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tx5 := getConflictsTx(smallNetFee + 1)
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tx4 := getConflictsTx(smallNetFee, tx5.Hash())
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require.NoError(t, mp.Add(tx4, fs)) // unverified
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require.Equal(t, 2, len(mp.conflicts))
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require.Equal(t, []util.Uint256{tx4.Hash()}, mp.conflicts[tx5.Hash()])
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require.NoError(t, mp.Add(tx5, fs))
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// tx5 does not conflict with anyone
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require.Equal(t, 1, len(mp.conflicts))
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// multiple conflicts in attributes of single transaction
|
|
tx6 := getConflictsTx(smallNetFee)
|
|
tx7 := getConflictsTx(smallNetFee)
|
|
tx8 := getConflictsTx(smallNetFee)
|
|
// need small network fee later
|
|
tx9 := getConflictsTx(smallNetFee-2, tx6.Hash(), tx7.Hash(), tx8.Hash())
|
|
require.NoError(t, mp.Add(tx9, fs))
|
|
require.Equal(t, 4, len(mp.conflicts))
|
|
require.Equal(t, []util.Uint256{tx9.Hash()}, mp.conflicts[tx6.Hash()])
|
|
require.Equal(t, []util.Uint256{tx9.Hash()}, mp.conflicts[tx7.Hash()])
|
|
require.Equal(t, []util.Uint256{tx9.Hash()}, mp.conflicts[tx8.Hash()])
|
|
require.Equal(t, []util.Uint256{tx3.Hash(), tx2.Hash()}, mp.conflicts[tx1.Hash()])
|
|
|
|
// multiple conflicts in attributes of multiple transactions
|
|
tx10 := getConflictsTx(smallNetFee, tx6.Hash())
|
|
tx11 := getConflictsTx(smallNetFee, tx6.Hash())
|
|
require.NoError(t, mp.Add(tx10, fs)) // unverified, because tx6 is not in the pool
|
|
require.NoError(t, mp.Add(tx11, fs)) // unverified, because tx6 is not in the pool
|
|
require.Equal(t, 4, len(mp.conflicts))
|
|
require.Equal(t, []util.Uint256{tx9.Hash(), tx10.Hash(), tx11.Hash()}, mp.conflicts[tx6.Hash()])
|
|
require.Equal(t, []util.Uint256{tx9.Hash()}, mp.conflicts[tx7.Hash()])
|
|
require.Equal(t, []util.Uint256{tx9.Hash()}, mp.conflicts[tx8.Hash()])
|
|
require.Equal(t, []util.Uint256{tx3.Hash(), tx2.Hash()}, mp.conflicts[tx1.Hash()])
|
|
|
|
// reach capacity, remove less prioritised tx9 with its multiple conflicts
|
|
require.Equal(t, capacity, len(mp.verifiedTxes))
|
|
tx12 := getConflictsTx(smallNetFee + 2)
|
|
require.NoError(t, mp.Add(tx12, fs))
|
|
require.Equal(t, 2, len(mp.conflicts))
|
|
require.Equal(t, []util.Uint256{tx10.Hash(), tx11.Hash()}, mp.conflicts[tx6.Hash()])
|
|
require.Equal(t, []util.Uint256{tx3.Hash(), tx2.Hash()}, mp.conflicts[tx1.Hash()])
|
|
|
|
// manually remove tx11 with its single conflict
|
|
mp.Remove(tx11.Hash(), fs)
|
|
require.Equal(t, 2, len(mp.conflicts))
|
|
require.Equal(t, []util.Uint256{tx10.Hash()}, mp.conflicts[tx6.Hash()])
|
|
|
|
// manually remove last tx which conflicts with tx6 => mp.conflicts[tx6] should also be deleted
|
|
mp.Remove(tx10.Hash(), fs)
|
|
require.Equal(t, 1, len(mp.conflicts))
|
|
require.Equal(t, []util.Uint256{tx3.Hash(), tx2.Hash()}, mp.conflicts[tx1.Hash()])
|
|
|
|
// tx13 conflicts with tx2, but is not signed by tx2.Sender
|
|
tx13 := transaction.New(netmode.UnitTestNet, []byte{byte(opcode.PUSH1)}, 0)
|
|
tx13.NetworkFee = smallNetFee
|
|
tx13.Nonce = uint32(random.Int(0, 1e4))
|
|
tx13.Signers = []transaction.Signer{{Account: util.Uint160{3, 2, 1}}}
|
|
tx13.Attributes = []transaction.Attribute{{
|
|
Type: transaction.ConflictsT,
|
|
Value: &transaction.Conflicts{
|
|
Hash: tx2.Hash(),
|
|
},
|
|
}}
|
|
_, ok := mp.TryGetValue(tx13.Hash())
|
|
require.Equal(t, false, ok)
|
|
require.True(t, errors.Is(mp.Add(tx13, fs), ErrConflictsAttribute))
|
|
}
|