0g-chain/app/sim_test.go

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package app
import (
"encoding/json"
"flag"
"fmt"
"io/ioutil"
"math/rand"
"os"
"testing"
"time"
"github.com/stretchr/testify/require"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/crypto/secp256k1"
dbm "github.com/tendermint/tendermint/libs/db"
"github.com/tendermint/tendermint/libs/log"
tmtypes "github.com/tendermint/tendermint/types"
"github.com/cosmos/cosmos-sdk/baseapp"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/auth"
authsim "github.com/cosmos/cosmos-sdk/x/auth/simulation"
"github.com/cosmos/cosmos-sdk/x/bank"
banksim "github.com/cosmos/cosmos-sdk/x/bank/simulation"
distr "github.com/cosmos/cosmos-sdk/x/distribution"
distrsim "github.com/cosmos/cosmos-sdk/x/distribution/simulation"
"github.com/cosmos/cosmos-sdk/x/gov"
govsim "github.com/cosmos/cosmos-sdk/x/gov/simulation"
"github.com/cosmos/cosmos-sdk/x/mint"
"github.com/cosmos/cosmos-sdk/x/simulation"
"github.com/cosmos/cosmos-sdk/x/slashing"
slashingsim "github.com/cosmos/cosmos-sdk/x/slashing/simulation"
"github.com/cosmos/cosmos-sdk/x/staking"
stakingsim "github.com/cosmos/cosmos-sdk/x/staking/simulation"
)
var (
genesisFile string
seed int64
numBlocks int
blockSize int
enabled bool
verbose bool
lean bool
commit bool
period int
)
func init() {
flag.StringVar(&genesisFile, "SimulationGenesis", "", "custom simulation genesis file")
flag.Int64Var(&seed, "SimulationSeed", 42, "simulation random seed")
flag.IntVar(&numBlocks, "SimulationNumBlocks", 500, "number of blocks")
flag.IntVar(&blockSize, "SimulationBlockSize", 200, "operations per block")
flag.BoolVar(&enabled, "SimulationEnabled", false, "enable the simulation")
flag.BoolVar(&verbose, "SimulationVerbose", false, "verbose log output")
flag.BoolVar(&lean, "SimulationLean", false, "lean simulation log output")
flag.BoolVar(&commit, "SimulationCommit", false, "have the simulation commit")
flag.IntVar(&period, "SimulationPeriod", 1, "run slow invariants only once every period assertions")
}
// helper function for populating input for SimulateFromSeed
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func getSimulateFromSeedInput(tb testing.TB, app *App) (
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testing.TB, *baseapp.BaseApp, simulation.AppStateFn, int64,
simulation.WeightedOperations, sdk.Invariants, int, int, bool, bool) {
return tb, app.BaseApp, appStateFn, seed,
testAndRunTxs(app), invariants(app), numBlocks, blockSize, commit, lean
}
func appStateFromGenesisFileFn(r *rand.Rand, accs []simulation.Account, genesisTimestamp time.Time) (json.RawMessage, []simulation.Account, string) {
var genesis tmtypes.GenesisDoc
cdc := MakeCodec()
bytes, err := ioutil.ReadFile(genesisFile)
if err != nil {
panic(err)
}
cdc.MustUnmarshalJSON(bytes, &genesis)
var appState GenesisState
cdc.MustUnmarshalJSON(genesis.AppState, &appState)
var newAccs []simulation.Account
for _, acc := range appState.Accounts {
// Pick a random private key, since we don't know the actual key
// This should be fine as it's only used for mock Tendermint validators
// and these keys are never actually used to sign by mock Tendermint.
privkeySeed := make([]byte, 15)
r.Read(privkeySeed)
privKey := secp256k1.GenPrivKeySecp256k1(privkeySeed)
newAccs = append(newAccs, simulation.Account{privKey, privKey.PubKey(), acc.Address})
}
return genesis.AppState, newAccs, genesis.ChainID
}
func appStateRandomizedFn(r *rand.Rand, accs []simulation.Account, genesisTimestamp time.Time) (json.RawMessage, []simulation.Account, string) {
var genesisAccounts []GenesisAccount
amount := int64(r.Intn(1e12))
numInitiallyBonded := int64(r.Intn(250))
numAccs := int64(len(accs))
if numInitiallyBonded > numAccs {
numInitiallyBonded = numAccs
}
fmt.Printf("Selected randomly generated parameters for simulated genesis:\n"+
"\t{amount of stake per account: %v, initially bonded validators: %v}\n",
amount, numInitiallyBonded)
// randomly generate some genesis accounts
for i, acc := range accs {
coins := sdk.Coins{sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(amount))}
bacc := auth.NewBaseAccountWithAddress(acc.Address)
bacc.SetCoins(coins)
var gacc GenesisAccount
// Only consider making a vesting account once the initial bonded validator
// set is exhausted due to needing to track DelegatedVesting.
if int64(i) > numInitiallyBonded && r.Intn(100) < 50 {
var (
vacc auth.VestingAccount
endTime int64
)
startTime := genesisTimestamp.Unix()
// Allow for some vesting accounts to vest very quickly while others very
// slowly.
if r.Intn(100) < 50 {
endTime = int64(simulation.RandIntBetween(r, int(startTime), int(startTime+(60*60*24*30))))
} else {
endTime = int64(simulation.RandIntBetween(r, int(startTime), int(startTime+(60*60*12))))
}
if startTime == endTime {
endTime += 1
}
if r.Intn(100) < 50 {
vacc = auth.NewContinuousVestingAccount(&bacc, startTime, endTime)
} else {
vacc = auth.NewDelayedVestingAccount(&bacc, endTime)
}
gacc = NewGenesisAccountI(vacc)
} else {
gacc = NewGenesisAccount(&bacc)
}
genesisAccounts = append(genesisAccounts, gacc)
}
authGenesis := auth.GenesisState{
Params: auth.Params{
MaxMemoCharacters: uint64(simulation.RandIntBetween(r, 100, 200)),
TxSigLimit: uint64(r.Intn(7) + 1),
TxSizeCostPerByte: uint64(simulation.RandIntBetween(r, 5, 15)),
SigVerifyCostED25519: uint64(simulation.RandIntBetween(r, 500, 1000)),
SigVerifyCostSecp256k1: uint64(simulation.RandIntBetween(r, 500, 1000)),
},
}
fmt.Printf("Selected randomly generated auth parameters:\n\t%+v\n", authGenesis)
bankGenesis := bank.NewGenesisState(r.Int63n(2) == 0)
fmt.Printf("Selected randomly generated bank parameters:\n\t%+v\n", bankGenesis)
// Random genesis states
vp := time.Duration(r.Intn(2*172800)) * time.Second
govGenesis := gov.GenesisState{
StartingProposalID: uint64(r.Intn(100)),
DepositParams: gov.DepositParams{
MinDeposit: sdk.Coins{sdk.NewInt64Coin(sdk.DefaultBondDenom, int64(r.Intn(1e3)))},
MaxDepositPeriod: vp,
},
VotingParams: gov.VotingParams{
VotingPeriod: vp,
},
TallyParams: gov.TallyParams{
Quorum: sdk.NewDecWithPrec(334, 3),
Threshold: sdk.NewDecWithPrec(5, 1),
Veto: sdk.NewDecWithPrec(334, 3),
},
}
fmt.Printf("Selected randomly generated governance parameters:\n\t%+v\n", govGenesis)
stakingGenesis := staking.GenesisState{
Pool: staking.InitialPool(),
Params: staking.Params{
UnbondingTime: time.Duration(simulation.RandIntBetween(r, 60, 60*60*24*3*2)) * time.Second,
MaxValidators: uint16(r.Intn(250) + 1),
BondDenom: sdk.DefaultBondDenom,
},
}
fmt.Printf("Selected randomly generated staking parameters:\n\t%+v\n", stakingGenesis)
slashingGenesis := slashing.GenesisState{
Params: slashing.Params{
MaxEvidenceAge: stakingGenesis.Params.UnbondingTime,
SignedBlocksWindow: int64(simulation.RandIntBetween(r, 10, 1000)),
MinSignedPerWindow: sdk.NewDecWithPrec(int64(r.Intn(10)), 1),
DowntimeJailDuration: time.Duration(simulation.RandIntBetween(r, 60, 60*60*24)) * time.Second,
SlashFractionDoubleSign: sdk.NewDec(1).Quo(sdk.NewDec(int64(r.Intn(50) + 1))),
SlashFractionDowntime: sdk.NewDec(1).Quo(sdk.NewDec(int64(r.Intn(200) + 1))),
},
}
fmt.Printf("Selected randomly generated slashing parameters:\n\t%+v\n", slashingGenesis)
mintGenesis := mint.GenesisState{
Minter: mint.InitialMinter(
sdk.NewDecWithPrec(int64(r.Intn(99)), 2)),
Params: mint.NewParams(
sdk.DefaultBondDenom,
sdk.NewDecWithPrec(int64(r.Intn(99)), 2),
sdk.NewDecWithPrec(20, 2),
sdk.NewDecWithPrec(7, 2),
sdk.NewDecWithPrec(67, 2),
uint64(60*60*8766/5)),
}
fmt.Printf("Selected randomly generated minting parameters:\n\t%+v\n", mintGenesis)
var validators []staking.Validator
var delegations []staking.Delegation
valAddrs := make([]sdk.ValAddress, numInitiallyBonded)
for i := 0; i < int(numInitiallyBonded); i++ {
valAddr := sdk.ValAddress(accs[i].Address)
valAddrs[i] = valAddr
validator := staking.NewValidator(valAddr, accs[i].PubKey, staking.Description{})
validator.Tokens = sdk.NewInt(amount)
validator.DelegatorShares = sdk.NewDec(amount)
delegation := staking.Delegation{accs[i].Address, valAddr, sdk.NewDec(amount)}
validators = append(validators, validator)
delegations = append(delegations, delegation)
}
stakingGenesis.Pool.NotBondedTokens = sdk.NewInt((amount * numAccs) + (numInitiallyBonded * amount))
stakingGenesis.Validators = validators
stakingGenesis.Delegations = delegations
distrGenesis := distr.GenesisState{
FeePool: distr.InitialFeePool(),
CommunityTax: sdk.NewDecWithPrec(1, 2).Add(sdk.NewDecWithPrec(int64(r.Intn(30)), 2)),
BaseProposerReward: sdk.NewDecWithPrec(1, 2).Add(sdk.NewDecWithPrec(int64(r.Intn(30)), 2)),
BonusProposerReward: sdk.NewDecWithPrec(1, 2).Add(sdk.NewDecWithPrec(int64(r.Intn(30)), 2)),
}
fmt.Printf("Selected randomly generated distribution parameters:\n\t%+v\n", distrGenesis)
genesis := GenesisState{
Accounts: genesisAccounts,
AuthData: authGenesis,
BankData: bankGenesis,
StakingData: stakingGenesis,
MintData: mintGenesis,
DistrData: distrGenesis,
SlashingData: slashingGenesis,
GovData: govGenesis,
}
// Marshal genesis
appState, err := MakeCodec().MarshalJSON(genesis)
if err != nil {
panic(err)
}
return appState, accs, "simulation"
}
func appStateFn(r *rand.Rand, accs []simulation.Account, genesisTimestamp time.Time) (json.RawMessage, []simulation.Account, string) {
if genesisFile != "" {
return appStateFromGenesisFileFn(r, accs, genesisTimestamp)
}
return appStateRandomizedFn(r, accs, genesisTimestamp)
}
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func testAndRunTxs(app *App) []simulation.WeightedOperation {
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return []simulation.WeightedOperation{
{5, authsim.SimulateDeductFee(app.accountKeeper, app.feeCollectionKeeper)},
{100, banksim.SimulateMsgSend(app.accountKeeper, app.bankKeeper)},
{10, banksim.SimulateSingleInputMsgMultiSend(app.accountKeeper, app.bankKeeper)},
{50, distrsim.SimulateMsgSetWithdrawAddress(app.accountKeeper, app.distrKeeper)},
{50, distrsim.SimulateMsgWithdrawDelegatorReward(app.accountKeeper, app.distrKeeper)},
{50, distrsim.SimulateMsgWithdrawValidatorCommission(app.accountKeeper, app.distrKeeper)},
{5, govsim.SimulateSubmittingVotingAndSlashingForProposal(app.govKeeper)},
{100, govsim.SimulateMsgDeposit(app.govKeeper)},
{100, stakingsim.SimulateMsgCreateValidator(app.accountKeeper, app.stakingKeeper)},
{5, stakingsim.SimulateMsgEditValidator(app.stakingKeeper)},
{100, stakingsim.SimulateMsgDelegate(app.accountKeeper, app.stakingKeeper)},
{100, stakingsim.SimulateMsgUndelegate(app.accountKeeper, app.stakingKeeper)},
{100, stakingsim.SimulateMsgBeginRedelegate(app.accountKeeper, app.stakingKeeper)},
{100, slashingsim.SimulateMsgUnjail(app.slashingKeeper)},
}
}
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func invariants(app *App) []sdk.Invariant {
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return []sdk.Invariant{
simulation.PeriodicInvariant(bank.NonnegativeBalanceInvariant(app.accountKeeper), period, 0),
simulation.PeriodicInvariant(distr.AllInvariants(app.distrKeeper, app.stakingKeeper), period, 0),
simulation.PeriodicInvariant(staking.AllInvariants(app.stakingKeeper, app.feeCollectionKeeper,
app.distrKeeper, app.accountKeeper), period, 0),
}
}
// Pass this in as an option to use a dbStoreAdapter instead of an IAVLStore for simulation speed.
func fauxMerkleModeOpt(bapp *baseapp.BaseApp) {
bapp.SetFauxMerkleMode()
}
// Profile with:
// /usr/local/go/bin/go test -benchmem -run=^$ github.com/cosmos/cosmos-sdk/cmd/gaia/app -bench ^BenchmarkFullGaiaSimulation$ -SimulationCommit=true -cpuprofile cpu.out
func BenchmarkFullGaiaSimulation(b *testing.B) {
// Setup Gaia application
logger := log.NewNopLogger()
var db dbm.DB
dir, _ := ioutil.TempDir("", "goleveldb-gaia-sim")
db, _ = sdk.NewLevelDB("Simulation", dir)
defer func() {
db.Close()
os.RemoveAll(dir)
}()
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app := NewApp(logger, db, nil, true, 0)
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// Run randomized simulation
// TODO parameterize numbers, save for a later PR
_, err := simulation.SimulateFromSeed(getSimulateFromSeedInput(b, app))
if err != nil {
fmt.Println(err)
b.Fail()
}
if commit {
fmt.Println("GoLevelDB Stats")
fmt.Println(db.Stats()["leveldb.stats"])
fmt.Println("GoLevelDB cached block size", db.Stats()["leveldb.cachedblock"])
}
}
func TestFullGaiaSimulation(t *testing.T) {
if !enabled {
t.Skip("Skipping Gaia simulation")
}
// Setup Gaia application
var logger log.Logger
if verbose {
logger = log.TestingLogger()
} else {
logger = log.NewNopLogger()
}
var db dbm.DB
dir, _ := ioutil.TempDir("", "goleveldb-gaia-sim")
db, _ = sdk.NewLevelDB("Simulation", dir)
defer func() {
db.Close()
os.RemoveAll(dir)
}()
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app := NewApp(logger, db, nil, true, 0, fauxMerkleModeOpt)
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require.Equal(t, "kava", app.Name())
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// Run randomized simulation
_, err := simulation.SimulateFromSeed(getSimulateFromSeedInput(t, app))
if commit {
// for memdb:
// fmt.Println("Database Size", db.Stats()["database.size"])
fmt.Println("GoLevelDB Stats")
fmt.Println(db.Stats()["leveldb.stats"])
fmt.Println("GoLevelDB cached block size", db.Stats()["leveldb.cachedblock"])
}
require.Nil(t, err)
}
func TestGaiaImportExport(t *testing.T) {
if !enabled {
t.Skip("Skipping Gaia import/export simulation")
}
// Setup Gaia application
var logger log.Logger
if verbose {
logger = log.TestingLogger()
} else {
logger = log.NewNopLogger()
}
var db dbm.DB
dir, _ := ioutil.TempDir("", "goleveldb-gaia-sim")
db, _ = sdk.NewLevelDB("Simulation", dir)
defer func() {
db.Close()
os.RemoveAll(dir)
}()
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app := NewApp(logger, db, nil, true, 0, fauxMerkleModeOpt)
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require.Equal(t, "kava", app.Name())
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// Run randomized simulation
_, err := simulation.SimulateFromSeed(getSimulateFromSeedInput(t, app))
if commit {
// for memdb:
// fmt.Println("Database Size", db.Stats()["database.size"])
fmt.Println("GoLevelDB Stats")
fmt.Println(db.Stats()["leveldb.stats"])
fmt.Println("GoLevelDB cached block size", db.Stats()["leveldb.cachedblock"])
}
require.Nil(t, err)
fmt.Printf("Exporting genesis...\n")
appState, _, err := app.ExportAppStateAndValidators(false, []string{})
require.NoError(t, err)
fmt.Printf("Importing genesis...\n")
newDir, _ := ioutil.TempDir("", "goleveldb-gaia-sim-2")
newDB, _ := sdk.NewLevelDB("Simulation-2", dir)
defer func() {
newDB.Close()
os.RemoveAll(newDir)
}()
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newApp := NewApp(log.NewNopLogger(), newDB, nil, true, 0, fauxMerkleModeOpt)
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require.Equal(t, "kava", newApp.Name())
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var genesisState GenesisState
err = app.cdc.UnmarshalJSON(appState, &genesisState)
if err != nil {
panic(err)
}
ctxB := newApp.NewContext(true, abci.Header{})
newApp.initFromGenesisState(ctxB, genesisState)
fmt.Printf("Comparing stores...\n")
ctxA := app.NewContext(true, abci.Header{})
type StoreKeysPrefixes struct {
A sdk.StoreKey
B sdk.StoreKey
Prefixes [][]byte
}
storeKeysPrefixes := []StoreKeysPrefixes{
{app.keyMain, newApp.keyMain, [][]byte{}},
{app.keyAccount, newApp.keyAccount, [][]byte{}},
{app.keyStaking, newApp.keyStaking, [][]byte{staking.UnbondingQueueKey,
staking.RedelegationQueueKey, staking.ValidatorQueueKey}}, // ordering may change but it doesn't matter
{app.keySlashing, newApp.keySlashing, [][]byte{}},
{app.keyMint, newApp.keyMint, [][]byte{}},
{app.keyDistr, newApp.keyDistr, [][]byte{}},
{app.keyFeeCollection, newApp.keyFeeCollection, [][]byte{}},
{app.keyParams, newApp.keyParams, [][]byte{}},
{app.keyGov, newApp.keyGov, [][]byte{}},
}
for _, storeKeysPrefix := range storeKeysPrefixes {
storeKeyA := storeKeysPrefix.A
storeKeyB := storeKeysPrefix.B
prefixes := storeKeysPrefix.Prefixes
storeA := ctxA.KVStore(storeKeyA)
storeB := ctxB.KVStore(storeKeyB)
kvA, kvB, count, equal := sdk.DiffKVStores(storeA, storeB, prefixes)
fmt.Printf("Compared %d key/value pairs between %s and %s\n", count, storeKeyA, storeKeyB)
require.True(t, equal,
"unequal stores: %s / %s:\nstore A %X => %X\nstore B %X => %X",
storeKeyA, storeKeyB, kvA.Key, kvA.Value, kvB.Key, kvB.Value,
)
}
}
func TestGaiaSimulationAfterImport(t *testing.T) {
if !enabled {
t.Skip("Skipping Gaia simulation after import")
}
// Setup Gaia application
var logger log.Logger
if verbose {
logger = log.TestingLogger()
} else {
logger = log.NewNopLogger()
}
dir, _ := ioutil.TempDir("", "goleveldb-gaia-sim")
db, _ := sdk.NewLevelDB("Simulation", dir)
defer func() {
db.Close()
os.RemoveAll(dir)
}()
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app := NewApp(logger, db, nil, true, 0, fauxMerkleModeOpt)
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require.Equal(t, "kava", app.Name())
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// Run randomized simulation
stopEarly, err := simulation.SimulateFromSeed(getSimulateFromSeedInput(t, app))
if commit {
// for memdb:
// fmt.Println("Database Size", db.Stats()["database.size"])
fmt.Println("GoLevelDB Stats")
fmt.Println(db.Stats()["leveldb.stats"])
fmt.Println("GoLevelDB cached block size", db.Stats()["leveldb.cachedblock"])
}
require.Nil(t, err)
if stopEarly {
// we can't export or import a zero-validator genesis
fmt.Printf("We can't export or import a zero-validator genesis, exiting test...\n")
return
}
fmt.Printf("Exporting genesis...\n")
appState, _, err := app.ExportAppStateAndValidators(true, []string{})
if err != nil {
panic(err)
}
fmt.Printf("Importing genesis...\n")
newDir, _ := ioutil.TempDir("", "goleveldb-gaia-sim-2")
newDB, _ := sdk.NewLevelDB("Simulation-2", dir)
defer func() {
newDB.Close()
os.RemoveAll(newDir)
}()
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newApp := NewApp(log.NewNopLogger(), newDB, nil, true, 0, fauxMerkleModeOpt)
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require.Equal(t, "kava", newApp.Name())
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newApp.InitChain(abci.RequestInitChain{
AppStateBytes: appState,
})
// Run randomized simulation on imported app
_, err = simulation.SimulateFromSeed(getSimulateFromSeedInput(t, newApp))
require.Nil(t, err)
}
// TODO: Make another test for the fuzzer itself, which just has noOp txs
// and doesn't depend on gaia
func TestAppStateDeterminism(t *testing.T) {
if !enabled {
t.Skip("Skipping Gaia simulation")
}
numSeeds := 3
numTimesToRunPerSeed := 5
appHashList := make([]json.RawMessage, numTimesToRunPerSeed)
for i := 0; i < numSeeds; i++ {
seed := rand.Int63()
for j := 0; j < numTimesToRunPerSeed; j++ {
logger := log.NewNopLogger()
db := dbm.NewMemDB()
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app := NewApp(logger, db, nil, true, 0)
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// Run randomized simulation
simulation.SimulateFromSeed(
t, app.BaseApp, appStateFn, seed,
testAndRunTxs(app),
[]sdk.Invariant{},
50,
100,
true,
false,
)
appHash := app.LastCommitID().Hash
appHashList[j] = appHash
}
for k := 1; k < numTimesToRunPerSeed; k++ {
require.Equal(t, appHashList[0], appHashList[k], "appHash list: %v", appHashList)
}
}
}