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package consensus
import (
"encoding/binary"
"testing"
"time"
abci "github.com/tendermint/abci/types"
"github.com/tendermint/tendermint/config/tendermint_test"
"github.com/tendermint/tendermint/types"
. "github.com/tendermint/tmlibs/common"
)
func init() {
config = tendermint_test.ResetConfig("consensus_mempool_test")
}
func TestTxConcurrentWithCommit(t *testing.T) {
state, privVals := randGenesisState(1, false, 10)
cs := newConsensusState(state, privVals[0], NewCounterApplication())
height, round := cs.Height, cs.Round
newBlockCh := subscribeToEvent(cs.evsw, "tester", types.EventStringNewBlock(), 1)
deliverTxsRange := func(start, end int) {
// Deliver some txs.
for i := start; i < end; i++ {
txBytes := make([]byte, 8)
binary.BigEndian.PutUint64(txBytes, uint64(i))
err := cs.mempool.CheckTx(txBytes, nil)
if err != nil {
panic(Fmt("Error after CheckTx: %v", err))
}
// time.Sleep(time.Microsecond * time.Duration(rand.Int63n(3000)))
}
}
NTxs := 10000
go deliverTxsRange(0, NTxs)
startTestRound(cs, height, round)
ticker := time.NewTicker(time.Second * 20)
for nTxs := 0; nTxs < NTxs; {
select {
case b := <-newBlockCh:
nTxs += b.(types.EventDataNewBlock).Block.Header.NumTxs
case <-ticker.C:
panic("Timed out waiting to commit blocks with transactions")
}
}
}
func TestRmBadTx(t *testing.T) {
state, privVals := randGenesisState(1, false, 10)
app := NewCounterApplication()
cs := newConsensusState(state, privVals[0], app)
// increment the counter by 1
txBytes := make([]byte, 8)
binary.BigEndian.PutUint64(txBytes, uint64(0))
app.DeliverTx(txBytes)
app.Commit()
ch := make(chan struct{})
cbCh := make(chan struct{})
go func() {
// Try to send the tx through the mempool.
// CheckTx should not err, but the app should return a bad abci code
// and the tx should get removed from the pool
err := cs.mempool.CheckTx(txBytes, func(r *abci.Response) {
if r.GetCheckTx().Code != abci.CodeType_BadNonce {
t.Fatalf("expected checktx to return bad nonce, got %v", r)
}
cbCh <- struct{}{}
})
if err != nil {
t.Fatal("Error after CheckTx: %v", err)
}
// check for the tx
for {
time.Sleep(time.Second)
txs := cs.mempool.Reap(1)
if len(txs) == 0 {
ch <- struct{}{}
return
}
}
}()
// Wait until the tx returns
ticker := time.After(time.Second * 5)
select {
case <-cbCh:
// success
case <-ticker:
t.Fatalf("Timed out waiting for tx to return")
}
// Wait until the tx is removed
ticker = time.After(time.Second * 5)
select {
case <-ch:
// success
case <-ticker:
t.Fatalf("Timed out waiting for tx to be removed")
}
}
// CounterApplication that maintains a mempool state and resets it upon commit
type CounterApplication struct {
abci.BaseApplication
txCount int
mempoolTxCount int
}
func NewCounterApplication() *CounterApplication {
return &CounterApplication{}
}
func (app *CounterApplication) Info() abci.ResponseInfo {
return abci.ResponseInfo{Data: Fmt("txs:%v", app.txCount)}
}
func (app *CounterApplication) DeliverTx(tx []byte) abci.Result {
return runTx(tx, &app.txCount)
}
func (app *CounterApplication) CheckTx(tx []byte) abci.Result {
return runTx(tx, &app.mempoolTxCount)
}
func runTx(tx []byte, countPtr *int) abci.Result {
count := *countPtr
tx8 := make([]byte, 8)
copy(tx8[len(tx8)-len(tx):], tx)
txValue := binary.BigEndian.Uint64(tx8)
if txValue != uint64(count) {
return abci.ErrBadNonce.AppendLog(Fmt("Invalid nonce. Expected %v, got %v", count, txValue))
}
*countPtr += 1
return abci.OK
}
func (app *CounterApplication) Commit() abci.Result {
app.mempoolTxCount = app.txCount
if app.txCount == 0 {
return abci.OK
} else {
hash := make([]byte, 8)
binary.BigEndian.PutUint64(hash, uint64(app.txCount))
return abci.NewResultOK(hash, "")
}
}