package app import ( "encoding/json" "fmt" "math/rand" "os" "testing" "github.com/stretchr/testify/require" abci "github.com/tendermint/tendermint/abci/types" "github.com/tendermint/tendermint/libs/log" dbm "github.com/tendermint/tm-db" "github.com/cosmos/cosmos-sdk/baseapp" "github.com/cosmos/cosmos-sdk/simapp" "github.com/cosmos/cosmos-sdk/simapp/helpers" "github.com/cosmos/cosmos-sdk/store" sdk "github.com/cosmos/cosmos-sdk/types" "github.com/cosmos/cosmos-sdk/x/auth" distr "github.com/cosmos/cosmos-sdk/x/distribution" "github.com/cosmos/cosmos-sdk/x/gov" "github.com/cosmos/cosmos-sdk/x/mint" "github.com/cosmos/cosmos-sdk/x/params" "github.com/cosmos/cosmos-sdk/x/simulation" "github.com/cosmos/cosmos-sdk/x/slashing" "github.com/cosmos/cosmos-sdk/x/staking" "github.com/cosmos/cosmos-sdk/x/supply" ) func init() { simapp.GetSimulatorFlags() } type storeKeysPrefixes struct { A sdk.StoreKey B sdk.StoreKey Prefixes [][]byte } // fauxMerkleModeOpt returns a BaseApp option to use a dbStoreAdapter instead of // an IAVLStore for faster simulation speed. func fauxMerkleModeOpt(bapp *baseapp.BaseApp) { bapp.SetFauxMerkleMode() } // interBlockCacheOpt returns a BaseApp option function that sets the persistent // inter-block write-through cache. func interBlockCacheOpt() func(*baseapp.BaseApp) { return baseapp.SetInterBlockCache(store.NewCommitKVStoreCacheManager()) } func TestFullAppSimulation(t *testing.T) { config, db, dir, logger, skip, err := simapp.SetupSimulation("leveldb-app-sim", "Simulation") if skip { t.Skip("skipping application simulation") } require.NoError(t, err, "simulation setup failed") defer func() { db.Close() require.NoError(t, os.RemoveAll(dir)) }() app := NewEthermintApp(logger, db, nil, true, simapp.FlagPeriodValue, fauxMerkleModeOpt) require.Equal(t, appName, app.Name()) // run randomized simulation _, simParams, simErr := simulation.SimulateFromSeed( t, os.Stdout, app.BaseApp, simapp.AppStateFn(app.Codec(), app.SimulationManager()), simapp.SimulationOperations(app, app.Codec(), config), app.ModuleAccountAddrs(), config, ) // export state and simParams before the simulation error is checked err = simapp.CheckExportSimulation(app, config, simParams) require.NoError(t, err) require.NoError(t, simErr) if config.Commit { simapp.PrintStats(db) } } func TestAppImportExport(t *testing.T) { config, db, dir, logger, skip, err := simapp.SetupSimulation("leveldb-app-sim", "Simulation") if skip { t.Skip("skipping application import/export simulation") } require.NoError(t, err, "simulation setup failed") defer func() { db.Close() require.NoError(t, os.RemoveAll(dir)) }() app := NewEthermintApp(logger, db, nil, true, simapp.FlagPeriodValue, fauxMerkleModeOpt) require.Equal(t, appName, app.Name()) // Run randomized simulation _, simParams, simErr := simulation.SimulateFromSeed( t, os.Stdout, app.BaseApp, simapp.AppStateFn(app.Codec(), app.SimulationManager()), simapp.SimulationOperations(app, app.Codec(), config), app.ModuleAccountAddrs(), config, ) // export state and simParams before the simulation error is checked err = simapp.CheckExportSimulation(app, config, simParams) require.NoError(t, err) require.NoError(t, simErr) if config.Commit { simapp.PrintStats(db) } fmt.Printf("exporting genesis...\n") appState, _, err := app.ExportAppStateAndValidators(false, []string{}) require.NoError(t, err) fmt.Printf("importing genesis...\n") // nolint: dogsled _, newDB, newDir, _, _, err := simapp.SetupSimulation("leveldb-app-sim-2", "Simulation-2") require.NoError(t, err, "simulation setup failed") defer func() { newDB.Close() require.NoError(t, os.RemoveAll(newDir)) }() newApp := NewEthermintApp(log.NewNopLogger(), newDB, nil, true, simapp.FlagPeriodValue, fauxMerkleModeOpt) require.Equal(t, appName, newApp.Name()) var genesisState map[string]json.RawMessage err = app.Codec().UnmarshalJSON(appState, &genesisState) require.NoError(t, err) ctxA := app.NewContext(true, abci.Header{Height: app.LastBlockHeight()}) ctxB := newApp.NewContext(true, abci.Header{Height: app.LastBlockHeight()}) newApp.mm.InitGenesis(ctxB, app.Codec(), genesisState) fmt.Printf("comparing stores...\n") storeKeysPrefixes := []storeKeysPrefixes{ {app.keys[baseapp.MainStoreKey], newApp.keys[baseapp.MainStoreKey], [][]byte{}}, {app.keys[auth.StoreKey], newApp.keys[auth.StoreKey], [][]byte{}}, {app.keys[staking.StoreKey], newApp.keys[staking.StoreKey], [][]byte{ staking.UnbondingQueueKey, staking.RedelegationQueueKey, staking.ValidatorQueueKey, staking.HistoricalInfoKey, }}, // ordering may change but it doesn't matter {app.keys[slashing.StoreKey], newApp.keys[slashing.StoreKey], [][]byte{}}, {app.keys[mint.StoreKey], newApp.keys[mint.StoreKey], [][]byte{}}, {app.keys[distr.StoreKey], newApp.keys[distr.StoreKey], [][]byte{}}, {app.keys[supply.StoreKey], newApp.keys[supply.StoreKey], [][]byte{}}, {app.keys[params.StoreKey], newApp.keys[params.StoreKey], [][]byte{}}, {app.keys[gov.StoreKey], newApp.keys[gov.StoreKey], [][]byte{}}, } for _, skp := range storeKeysPrefixes { storeA := ctxA.KVStore(skp.A) storeB := ctxB.KVStore(skp.B) failedKVAs, failedKVBs := sdk.DiffKVStores(storeA, storeB, skp.Prefixes) require.Equal(t, len(failedKVAs), len(failedKVBs), "unequal sets of key-values to compare") fmt.Printf("compared %d key/value pairs between %s and %s\n", len(failedKVAs), skp.A, skp.B) require.Equal(t, len(failedKVAs), 0, simapp.GetSimulationLog(skp.A.Name(), app.SimulationManager().StoreDecoders, app.Codec(), failedKVAs, failedKVBs)) } } func TestAppSimulationAfterImport(t *testing.T) { config, db, dir, logger, skip, err := simapp.SetupSimulation("leveldb-app-sim", "Simulation") if skip { t.Skip("skipping application simulation after import") } require.NoError(t, err, "simulation setup failed") defer func() { db.Close() require.NoError(t, os.RemoveAll(dir)) }() app := NewEthermintApp(logger, db, nil, true, simapp.FlagPeriodValue, fauxMerkleModeOpt) require.Equal(t, appName, app.Name()) // Run randomized simulation stopEarly, simParams, simErr := simulation.SimulateFromSeed( t, os.Stdout, app.BaseApp, simapp.AppStateFn(app.Codec(), app.SimulationManager()), simapp.SimulationOperations(app, app.Codec(), config), app.ModuleAccountAddrs(), config, ) // export state and simParams before the simulation error is checked err = simapp.CheckExportSimulation(app, config, simParams) require.NoError(t, err) require.NoError(t, simErr) if config.Commit { simapp.PrintStats(db) } if stopEarly { fmt.Println("can't export or import a zero-validator genesis, exiting test...") return } fmt.Printf("exporting genesis...\n") appState, _, err := app.ExportAppStateAndValidators(true, []string{}) require.NoError(t, err) fmt.Printf("importing genesis...\n") // nolint: dosgsled _, newDB, newDir, _, _, err := simapp.SetupSimulation("leveldb-app-sim-2", "Simulation-2") require.NoError(t, err, "simulation setup failed") defer func() { newDB.Close() require.NoError(t, os.RemoveAll(newDir)) }() newApp := NewEthermintApp(log.NewNopLogger(), newDB, nil, true, simapp.FlagPeriodValue, fauxMerkleModeOpt) require.Equal(t, appName, newApp.Name()) newApp.InitChain(abci.RequestInitChain{ AppStateBytes: appState, }) _, _, err = simulation.SimulateFromSeed( t, os.Stdout, newApp.BaseApp, simapp.AppStateFn(app.Codec(), app.SimulationManager()), simapp.SimulationOperations(newApp, newApp.Codec(), config), newApp.ModuleAccountAddrs(), config, ) require.NoError(t, err) } func TestAppStateDeterminism(t *testing.T) { if !simapp.FlagEnabledValue { t.Skip("skipping application simulation") } config := simapp.NewConfigFromFlags() config.InitialBlockHeight = 1 config.ExportParamsPath = "" config.OnOperation = false config.AllInvariants = false config.ChainID = helpers.SimAppChainID numTimesToRunPerSeed := 2 appHashList := make([]json.RawMessage, numTimesToRunPerSeed) config.Seed = rand.Int63() for i := 0; i < numTimesToRunPerSeed; i++ { var logger log.Logger if simapp.FlagVerboseValue { logger = log.TestingLogger() } else { logger = log.NewNopLogger() } db := dbm.NewMemDB() app := NewEthermintApp(logger, db, nil, true, simapp.FlagPeriodValue, interBlockCacheOpt()) fmt.Printf( "running non-determinism simulation; seed %d: attempt: %d/%d\n", config.Seed, i+1, numTimesToRunPerSeed, ) _, _, err := simulation.SimulateFromSeed( t, os.Stdout, app.BaseApp, simapp.AppStateFn(app.Codec(), app.SimulationManager()), simapp.SimulationOperations(app, app.Codec(), config), app.ModuleAccountAddrs(), config, ) require.NoError(t, err) if config.Commit { simapp.PrintStats(db) } appHash := app.LastCommitID().Hash appHashList[i] = appHash if i != 0 { require.Equal( t, appHashList[0], appHashList[i], "non-determinism in seed %d: %d/%d, attempt: %d/%d\n", config.Seed, i+1, numTimesToRunPerSeed, ) } } }