Initialise app simulation tests

app/app.go

@@ -13,6 +13,7 @@ import (
 
 	"github.com/cosmos/cosmos-sdk/std"
 	"github.com/cosmos/cosmos-sdk/x/auth"
+	authsims "github.com/cosmos/cosmos-sdk/x/auth/simulation"
 	"github.com/cosmos/cosmos-sdk/x/bank"
 	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
 	"github.com/cosmos/cosmos-sdk/x/consensus"
@@ -366,6 +367,13 @@ func NewHeimdallApp(
 
 	testdata.RegisterQueryServer(app.GRPCQueryRouter(), testdata.QueryImpl{})
 
+	overrideModules := map[string]module.AppModuleSimulation{
+		authtypes.ModuleName: auth.NewAppModule(app.appCodec, app.AccountKeeper, authsims.RandomGenesisAccounts, nil),
+	}
+	app.simulationManager = module.NewSimulationManagerFromAppModules(app.mm.Modules, overrideModules)
+
+	app.simulationManager.RegisterStoreDecoders()
+
 	// initialize stores
 	app.MountKVStores(keys)
 	app.MountTransientStores(tkeys)

app/sim_bench_test.go

@@ -0,0 +1,93 @@
+package app
+
+import (
+	"os"
+	"testing"
+
+	flag "github.com/spf13/pflag"
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+
+	"github.com/cosmos/cosmos-sdk/baseapp"
+	"github.com/cosmos/cosmos-sdk/client/flags"
+	"github.com/cosmos/cosmos-sdk/server"
+	simtestutil "github.com/cosmos/cosmos-sdk/testutil/sims"
+	simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
+	"github.com/cosmos/cosmos-sdk/x/simulation"
+	simcli "github.com/cosmos/cosmos-sdk/x/simulation/client/cli"
+)
+
+var FlagEnableBenchStreamingValue bool
+
+// Get flags every time the simulator is run
+func init() {
+	flag.BoolVar(&FlagEnableBenchStreamingValue, "EnableStreaming", false, "Enable streaming service")
+}
+
+// TODO HV2: test this once https://github.com/0xPolygon/cosmos-sdk/pull/3 is merged
+// see https://github.com/0xPolygon/heimdall-v2/pull/10#discussion_r1482779246
+
+// Profile with:
+// /usr/local/go/bin/go test -benchmem -run=^$ github.com/0xPolygon/heimdall-v2/app -bench ^BenchmarkFullAppSimulation$ -Commit=true -cpuprofile cpu.out
+func BenchmarkFullAppSimulation(b *testing.B) {
+	b.ReportAllocs()
+
+	config := simcli.NewConfigFromFlags()
+	config.ChainID = HeimdallAppChainID
+
+	db, dir, logger, skip, err := simtestutil.SetupSimulation(config, "goleveldb-app-heimdall", "Simulation", simcli.FlagVerboseValue, simcli.FlagEnabledValue)
+	if err != nil {
+		b.Fatalf("simulation setup failed: %s", err.Error())
+	}
+
+	if skip {
+		b.Skip("skipping benchmark application simulation")
+	}
+
+	defer func() {
+		require.NoError(b, db.Close())
+		require.NoError(b, os.RemoveAll(dir))
+	}()
+
+	appOptions := viper.New()
+	if FlagEnableStreamingValue {
+		m := make(map[string]interface{})
+		m["streaming.abci.keys"] = []string{"*"}
+		m["streaming.abci.plugin"] = "abci_v1" //nolint:goconst
+		m["streaming.abci.stop-node-on-err"] = true
+		for key, value := range m {
+			appOptions.SetDefault(key, value)
+		}
+	}
+	appOptions.SetDefault(flags.FlagHome, DefaultNodeHome)
+	appOptions.SetDefault(server.FlagInvCheckPeriod, simcli.FlagPeriodValue)
+
+	app := NewHeimdallApp(logger, db, nil, true, appOptions, interBlockCacheOpt(), baseapp.SetChainID(HeimdallAppChainID))
+
+	// run randomized simulation
+
+	_, simParams, simErr := simulation.SimulateFromSeed(
+		b,
+		os.Stdout,
+		app.BaseApp,
+		simtestutil.AppStateFn(app.AppCodec(), app.SimulationManager(), app.DefaultGenesis()),
+		simtypes.RandomAccounts, // Replace with own random account function if using keys other than secp256k1
+		simtestutil.SimulationOperations(app, app.AppCodec(), config),
+		app.BlockedModuleAccountAddrs(app.ModuleAccountAddrs()),
+		config,
+		app.AppCodec(),
+	)
+
+	// export state and simParams before the simulation error is checked
+	if err = simtestutil.CheckExportSimulation(app, config, simParams); err != nil {
+		b.Fatal(err)
+	}
+
+	if simErr != nil {
+		b.Fatal(simErr)
+	}
+
+	if config.Commit {
+		simtestutil.PrintStats(db)
+	}
+}