654 lines
18 KiB
Go
654 lines
18 KiB
Go
package simapp
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import (
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"encoding/json"
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"math/rand"
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"os"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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abci "github.com/tendermint/tendermint/abci/types"
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dbm "github.com/tendermint/tendermint/libs/db"
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"github.com/tendermint/tendermint/libs/log"
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"github.com/cosmos/cosmos-sdk/baseapp"
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sdk "github.com/cosmos/cosmos-sdk/types"
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authsim "github.com/cosmos/cosmos-sdk/x/auth/simulation"
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"github.com/cosmos/cosmos-sdk/x/bank"
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distrsim "github.com/cosmos/cosmos-sdk/x/distribution/simulation"
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govsim "github.com/cosmos/cosmos-sdk/x/gov/simulation"
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paramsim "github.com/cosmos/cosmos-sdk/x/params/simulation"
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"github.com/cosmos/cosmos-sdk/x/simulation"
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slashingsim "github.com/cosmos/cosmos-sdk/x/slashing/simulation"
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"github.com/cosmos/cosmos-sdk/x/staking"
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stakingsim "github.com/cosmos/cosmos-sdk/x/staking/simulation"
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)
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func init() {
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flag.StringVar(&genesisFile, "SimulationGenesis", "", "custom simulation genesis file; cannot be used with params file")
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flag.StringVar(¶msFile, "SimulationParams", "", "custom simulation params file which overrides any random params; cannot be used with genesis")
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flag.Int64Var(&seed, "SimulationSeed", 42, "simulation random seed")
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flag.IntVar(&numBlocks, "SimulationNumBlocks", 500, "number of blocks")
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flag.IntVar(&blockSize, "SimulationBlockSize", 200, "operations per block")
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flag.BoolVar(&enabled, "SimulationEnabled", false, "enable the simulation")
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flag.BoolVar(&verbose, "SimulationVerbose", false, "verbose log output")
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flag.BoolVar(&lean, "SimulationLean", false, "lean simulation log output")
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flag.BoolVar(&commit, "SimulationCommit", false, "have the simulation commit")
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flag.IntVar(&period, "SimulationPeriod", 1, "run slow invariants only once every period assertions")
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flag.BoolVar(&onOperation, "SimulateEveryOperation", false, "run slow invariants every operation")
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flag.BoolVar(&allInvariants, "PrintAllInvariants", false, "print all invariants if a broken invariant is found")
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}
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// helper function for populating input for SimulateFromSeed
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func getSimulateFromSeedInput(tb testing.TB, w io.Writer, app *SimApp) (
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testing.TB, io.Writer, *baseapp.BaseApp, simulation.AppStateFn, int64,
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simulation.WeightedOperations, sdk.Invariants, int, int, bool, bool, bool, bool) {
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return tb, w, app.BaseApp, appStateFn, seed,
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testAndRunTxs(app), invariants(app), numBlocks, blockSize, commit, lean, onOperation, allInvariants
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}
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func appStateFn(
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r *rand.Rand, accs []simulation.Account, genesisTimestamp time.Time,
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) (appState json.RawMessage, simAccs []simulation.Account, chainID string) {
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cdc := MakeCodec()
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switch {
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case paramsFile != "" && genesisFile != "":
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panic("cannot provide both a genesis file and a params file")
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case genesisFile != "":
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appState, simAccs, chainID = AppStateFromGenesisFileFn(r, accs, genesisTimestamp)
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case paramsFile != "":
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appParams := make(simulation.AppParams)
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bz, err := ioutil.ReadFile(paramsFile)
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if err != nil {
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panic(err)
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}
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cdc.MustUnmarshalJSON(bz, &appParams)
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appState, simAccs, chainID = appStateRandomizedFn(r, accs, genesisTimestamp, appParams)
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default:
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appParams := make(simulation.AppParams)
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appState, simAccs, chainID = appStateRandomizedFn(r, accs, genesisTimestamp, appParams)
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}
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return appState, simAccs, chainID
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}
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// TODO refactor out random initialization code to the modules
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func appStateRandomizedFn(
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r *rand.Rand, accs []simulation.Account, genesisTimestamp time.Time, appParams simulation.AppParams,
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) (json.RawMessage, []simulation.Account, string) {
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cdc := MakeCodec()
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genesisState := NewDefaultGenesisState()
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var (
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amount int64
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numInitiallyBonded int64
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)
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appParams.GetOrGenerate(cdc, StakePerAccount, &amount, r,
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func(r *rand.Rand) { amount = int64(r.Intn(1e12)) })
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appParams.GetOrGenerate(cdc, InitiallyBondedValidators, &amount, r,
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func(r *rand.Rand) { numInitiallyBonded = int64(r.Intn(250)) })
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numAccs := int64(len(accs))
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if numInitiallyBonded > numAccs {
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numInitiallyBonded = numAccs
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}
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fmt.Printf(
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`Selected randomly generated parameters for simulated genesis:
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{
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stake_per_account: "%v",
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initially_bonded_validators: "%v"
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}
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`, amount, numInitiallyBonded,
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)
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GenGenesisAccounts(cdc, r, accs, genesisTimestamp, amount, numInitiallyBonded, genesisState)
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GenAuthGenesisState(cdc, r, appParams, genesisState)
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GenBankGenesisState(cdc, r, appParams, genesisState)
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GenSupplyGenesisState(cdc, amount, numInitiallyBonded, int64(len(accs)), genesisState)
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GenGovGenesisState(cdc, r, appParams, genesisState)
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GenMintGenesisState(cdc, r, appParams, genesisState)
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GenDistrGenesisState(cdc, r, appParams, genesisState)
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stakingGen := GenStakingGenesisState(cdc, r, accs, amount, numAccs, numInitiallyBonded, appParams, genesisState)
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GenSlashingGenesisState(cdc, r, stakingGen, appParams, genesisState)
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appState, err := MakeCodec().MarshalJSON(genesisState)
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if err != nil {
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panic(err)
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}
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return appState, accs, "simulation"
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}
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func testAndRunTxs(app *SimApp) []simulation.WeightedOperation {
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cdc := MakeCodec()
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ap := make(simulation.AppParams)
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if paramsFile != "" {
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bz, err := ioutil.ReadFile(paramsFile)
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if err != nil {
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panic(err)
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}
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cdc.MustUnmarshalJSON(bz, &ap)
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}
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return []simulation.WeightedOperation{
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightDeductFee, &v, nil,
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func(_ *rand.Rand) {
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v = 5
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})
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return v
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}(nil),
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authsim.SimulateDeductFee(app.accountKeeper, app.supplyKeeper),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightMsgSend, &v, nil,
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func(_ *rand.Rand) {
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v = 100
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})
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return v
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}(nil),
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bank.SimulateMsgSend(app.accountKeeper, app.bankKeeper),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightSingleInputMsgMultiSend, &v, nil,
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func(_ *rand.Rand) {
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v = 10
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})
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return v
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}(nil),
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bank.SimulateSingleInputMsgMultiSend(app.accountKeeper, app.bankKeeper),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightMsgSetWithdrawAddress, &v, nil,
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func(_ *rand.Rand) {
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v = 50
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})
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return v
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}(nil),
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distrsim.SimulateMsgSetWithdrawAddress(app.accountKeeper, app.distrKeeper),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightMsgWithdrawDelegationReward, &v, nil,
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func(_ *rand.Rand) {
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v = 50
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})
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return v
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}(nil),
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distrsim.SimulateMsgWithdrawDelegatorReward(app.accountKeeper, app.distrKeeper),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightMsgWithdrawValidatorCommission, &v, nil,
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func(_ *rand.Rand) {
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v = 50
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})
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return v
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}(nil),
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distrsim.SimulateMsgWithdrawValidatorCommission(app.accountKeeper, app.distrKeeper),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightSubmitVotingSlashingTextProposal, &v, nil,
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func(_ *rand.Rand) {
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v = 5
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})
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return v
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}(nil),
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govsim.SimulateSubmittingVotingAndSlashingForProposal(app.govKeeper, govsim.SimulateTextProposalContent),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightSubmitVotingSlashingCommunitySpendProposal, &v, nil,
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func(_ *rand.Rand) {
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v = 5
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})
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return v
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}(nil),
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govsim.SimulateSubmittingVotingAndSlashingForProposal(app.govKeeper, distrsim.SimulateCommunityPoolSpendProposalContent(app.distrKeeper)),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightSubmitVotingSlashingParamChangeProposal, &v, nil,
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func(_ *rand.Rand) {
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v = 5
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})
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return v
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}(nil),
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govsim.SimulateSubmittingVotingAndSlashingForProposal(app.govKeeper, paramsim.SimulateParamChangeProposalContent),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightMsgDeposit, &v, nil,
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func(_ *rand.Rand) {
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v = 100
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})
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return v
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}(nil),
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govsim.SimulateMsgDeposit(app.govKeeper),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightMsgCreateValidator, &v, nil,
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func(_ *rand.Rand) {
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v = 100
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})
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return v
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}(nil),
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stakingsim.SimulateMsgCreateValidator(app.accountKeeper, app.stakingKeeper),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightMsgEditValidator, &v, nil,
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func(_ *rand.Rand) {
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v = 5
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})
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return v
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}(nil),
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stakingsim.SimulateMsgEditValidator(app.stakingKeeper),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightMsgDelegate, &v, nil,
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func(_ *rand.Rand) {
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v = 100
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})
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return v
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}(nil),
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stakingsim.SimulateMsgDelegate(app.accountKeeper, app.stakingKeeper),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightMsgUndelegate, &v, nil,
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func(_ *rand.Rand) {
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v = 100
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})
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return v
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}(nil),
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stakingsim.SimulateMsgUndelegate(app.accountKeeper, app.stakingKeeper),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightMsgBeginRedelegate, &v, nil,
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func(_ *rand.Rand) {
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v = 100
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})
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return v
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}(nil),
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stakingsim.SimulateMsgBeginRedelegate(app.accountKeeper, app.stakingKeeper),
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},
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{
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func(_ *rand.Rand) int {
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var v int
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ap.GetOrGenerate(cdc, OpWeightMsgUnjail, &v, nil,
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func(_ *rand.Rand) {
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v = 100
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})
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return v
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}(nil),
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slashingsim.SimulateMsgUnjail(app.slashingKeeper),
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},
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}
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}
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func invariants(app *SimApp) []sdk.Invariant {
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// TODO: fix PeriodicInvariants, it doesn't seem to call individual invariants for a period of 1
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// Ref: https://github.com/cosmos/cosmos-sdk/issues/4631
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if period == 1 {
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return app.crisisKeeper.Invariants()
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}
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return simulation.PeriodicInvariants(app.crisisKeeper.Invariants(), period, 0)
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}
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// Pass this in as an option to use a dbStoreAdapter instead of an IAVLStore for simulation speed.
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func fauxMerkleModeOpt(bapp *baseapp.BaseApp) {
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bapp.SetFauxMerkleMode()
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}
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// Profile with:
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// /usr/local/go/bin/go test -benchmem -run=^$ github.com/cosmos/cosmos-sdk/simapp -bench ^BenchmarkFullAppSimulation$ -SimulationCommit=true -cpuprofile cpu.out
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func BenchmarkFullAppSimulation(b *testing.B) {
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logger := log.NewNopLogger()
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var db dbm.DB
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dir, _ := ioutil.TempDir("", "goleveldb-app-sim")
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db, _ = sdk.NewLevelDB("Simulation", dir)
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defer func() {
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db.Close()
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os.RemoveAll(dir)
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}()
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app := NewSimApp(logger, db, nil, true, 0)
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// Run randomized simulation
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// TODO parameterize numbers, save for a later PR
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_, err := simulation.SimulateFromSeed(getSimulateFromSeedInput(b, os.Stdout, app))
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if err != nil {
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fmt.Println(err)
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b.Fail()
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}
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if commit {
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fmt.Println("GoLevelDB Stats")
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fmt.Println(db.Stats()["leveldb.stats"])
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fmt.Println("GoLevelDB cached block size", db.Stats()["leveldb.cachedblock"])
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}
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}
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func TestFullAppSimulation(t *testing.T) {
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if !enabled {
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t.Skip("Skipping application simulation")
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}
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var logger log.Logger
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if verbose {
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logger = log.TestingLogger()
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} else {
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logger = log.NewNopLogger()
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}
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var db dbm.DB
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dir, _ := ioutil.TempDir("", "goleveldb-app-sim")
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db, _ = sdk.NewLevelDB("Simulation", dir)
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defer func() {
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db.Close()
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os.RemoveAll(dir)
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}()
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app := NewSimApp(logger, db, nil, true, 0, fauxMerkleModeOpt)
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require.Equal(t, "SimApp", app.Name())
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// Run randomized simulation
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_, err := simulation.SimulateFromSeed(getSimulateFromSeedInput(t, os.Stdout, app))
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if commit {
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// for memdb:
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// fmt.Println("Database Size", db.Stats()["database.size"])
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fmt.Println("GoLevelDB Stats")
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fmt.Println(db.Stats()["leveldb.stats"])
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fmt.Println("GoLevelDB cached block size", db.Stats()["leveldb.cachedblock"])
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}
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require.Nil(t, err)
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}
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func TestAppImportExport(t *testing.T) {
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if !enabled {
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t.Skip("Skipping application import/export simulation")
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}
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var logger log.Logger
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if verbose {
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logger = log.TestingLogger()
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} else {
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logger = log.NewNopLogger()
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}
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var db dbm.DB
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dir, _ := ioutil.TempDir("", "goleveldb-app-sim")
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db, _ = sdk.NewLevelDB("Simulation", dir)
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defer func() {
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db.Close()
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os.RemoveAll(dir)
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}()
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app := NewSimApp(logger, db, nil, true, 0, fauxMerkleModeOpt)
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require.Equal(t, "SimApp", app.Name())
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// Run randomized simulation
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_, err := simulation.SimulateFromSeed(getSimulateFromSeedInput(t, os.Stdout, app))
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if commit {
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// for memdb:
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// fmt.Println("Database Size", db.Stats()["database.size"])
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fmt.Println("GoLevelDB Stats")
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fmt.Println(db.Stats()["leveldb.stats"])
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fmt.Println("GoLevelDB cached block size", db.Stats()["leveldb.cachedblock"])
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}
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require.Nil(t, err)
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fmt.Printf("Exporting genesis...\n")
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appState, _, err := app.ExportAppStateAndValidators(false, []string{})
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require.NoError(t, err)
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fmt.Printf("Importing genesis...\n")
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newDir, _ := ioutil.TempDir("", "goleveldb-app-sim-2")
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newDB, _ := sdk.NewLevelDB("Simulation-2", dir)
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defer func() {
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newDB.Close()
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os.RemoveAll(newDir)
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}()
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newApp := NewSimApp(log.NewNopLogger(), newDB, nil, true, 0, fauxMerkleModeOpt)
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require.Equal(t, "SimApp", newApp.Name())
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var genesisState GenesisState
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err = app.cdc.UnmarshalJSON(appState, &genesisState)
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if err != nil {
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panic(err)
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}
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ctxB := newApp.NewContext(true, abci.Header{})
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newApp.mm.InitGenesis(ctxB, genesisState)
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fmt.Printf("Comparing stores...\n")
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ctxA := app.NewContext(true, abci.Header{})
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type StoreKeysPrefixes struct {
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A sdk.StoreKey
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B sdk.StoreKey
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Prefixes [][]byte
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}
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storeKeysPrefixes := []StoreKeysPrefixes{
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{app.keyMain, newApp.keyMain, [][]byte{}},
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{app.keyAccount, newApp.keyAccount, [][]byte{}},
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{app.keyStaking, newApp.keyStaking, [][]byte{staking.UnbondingQueueKey,
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staking.RedelegationQueueKey, staking.ValidatorQueueKey}}, // ordering may change but it doesn't matter
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{app.keySlashing, newApp.keySlashing, [][]byte{}},
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{app.keyMint, newApp.keyMint, [][]byte{}},
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{app.keyDistr, newApp.keyDistr, [][]byte{}},
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{app.keySupply, newApp.keySupply, [][]byte{}},
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{app.keyParams, newApp.keyParams, [][]byte{}},
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{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, GetSimulationLog(storeKeyA.Name(), app.cdc, newApp.cdc, kvA, kvB))
|
|
}
|
|
|
|
}
|
|
|
|
func TestAppSimulationAfterImport(t *testing.T) {
|
|
if !enabled {
|
|
t.Skip("Skipping application simulation after import")
|
|
}
|
|
|
|
var logger log.Logger
|
|
if verbose {
|
|
logger = log.TestingLogger()
|
|
} else {
|
|
logger = log.NewNopLogger()
|
|
}
|
|
|
|
dir, _ := ioutil.TempDir("", "goleveldb-app-sim")
|
|
db, _ := sdk.NewLevelDB("Simulation", dir)
|
|
|
|
defer func() {
|
|
db.Close()
|
|
os.RemoveAll(dir)
|
|
}()
|
|
|
|
app := NewSimApp(logger, db, nil, true, 0, fauxMerkleModeOpt)
|
|
require.Equal(t, "SimApp", app.Name())
|
|
|
|
// Run randomized simulation
|
|
stopEarly, err := simulation.SimulateFromSeed(getSimulateFromSeedInput(t, os.Stdout, 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-app-sim-2")
|
|
newDB, _ := sdk.NewLevelDB("Simulation-2", dir)
|
|
|
|
defer func() {
|
|
newDB.Close()
|
|
os.RemoveAll(newDir)
|
|
}()
|
|
|
|
newApp := NewSimApp(log.NewNopLogger(), newDB, nil, true, 0, fauxMerkleModeOpt)
|
|
require.Equal(t, "SimApp", newApp.Name())
|
|
newApp.InitChain(abci.RequestInitChain{
|
|
AppStateBytes: appState,
|
|
})
|
|
|
|
// Run randomized simulation on imported app
|
|
_, err = simulation.SimulateFromSeed(getSimulateFromSeedInput(t, os.Stdout, newApp))
|
|
require.Nil(t, err)
|
|
}
|
|
|
|
// TODO: Make another test for the fuzzer itself, which just has noOp txs
|
|
// and doesn't depend on the application.
|
|
func TestAppStateDeterminism(t *testing.T) {
|
|
if !enabled {
|
|
t.Skip("Skipping application 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()
|
|
app := NewSimApp(logger, db, nil, true, 0)
|
|
|
|
// Run randomized simulation
|
|
simulation.SimulateFromSeed(
|
|
t, os.Stdout, app.BaseApp, appStateFn, seed,
|
|
testAndRunTxs(app),
|
|
[]sdk.Invariant{},
|
|
50,
|
|
100,
|
|
true,
|
|
false,
|
|
false,
|
|
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)
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkInvariants(b *testing.B) {
|
|
logger := log.NewNopLogger()
|
|
dir, _ := ioutil.TempDir("", "goleveldb-app-invariant-bench")
|
|
db, _ := sdk.NewLevelDB("simulation", dir)
|
|
|
|
defer func() {
|
|
db.Close()
|
|
os.RemoveAll(dir)
|
|
}()
|
|
|
|
app := NewSimApp(logger, db, nil, true, 0)
|
|
|
|
// 2. Run parameterized simulation (w/o invariants)
|
|
_, err := simulation.SimulateFromSeed(
|
|
b, ioutil.Discard, app.BaseApp, appStateFn, seed, testAndRunTxs(app),
|
|
[]sdk.Invariant{}, numBlocks, blockSize, commit, lean, onOperation, false,
|
|
)
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
b.FailNow()
|
|
}
|
|
|
|
ctx := app.NewContext(true, abci.Header{Height: app.LastBlockHeight() + 1})
|
|
|
|
// 3. Benchmark each invariant separately
|
|
//
|
|
// NOTE: We use the crisis keeper as it has all the invariants registered with
|
|
// their respective metadata which makes it useful for testing/benchmarking.
|
|
for _, cr := range app.crisisKeeper.Routes() {
|
|
b.Run(fmt.Sprintf("%s/%s", cr.ModuleName, cr.Route), func(b *testing.B) {
|
|
if res, stop := cr.Invar(ctx); stop {
|
|
fmt.Printf("broken invariant at block %d of %d\n%s", ctx.BlockHeight()-1, numBlocks, res)
|
|
b.FailNow()
|
|
}
|
|
})
|
|
}
|
|
}
|