fix: simulations don't generate EVM transactions

app/app.go

@@ -536,7 +536,7 @@ func NewEthermintApp(
 	// NOTE: this is not required apps that don't use the simulator for fuzz testing
 	// transactions
 	app.sm = module.NewSimulationManager(
-		auth.NewAppModule(appCodec, app.AccountKeeper, authsims.RandomGenesisAccounts),
+		auth.NewAppModule(appCodec, app.AccountKeeper, RandomGenesisAccounts),
 		bank.NewAppModule(appCodec, app.BankKeeper, app.AccountKeeper),
 		capability.NewAppModule(appCodec, *app.CapabilityKeeper),
 		gov.NewAppModule(appCodec, app.GovKeeper, app.AccountKeeper, app.BankKeeper),

app/simulation_test.go

@@ -15,7 +15,6 @@ import (
 	"github.com/cosmos/cosmos-sdk/simapp/params"
 	"github.com/cosmos/cosmos-sdk/store"
 	sdk "github.com/cosmos/cosmos-sdk/types"
-	simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
 	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
 	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
 	capabilitytypes "github.com/cosmos/cosmos-sdk/x/capability/types"
@@ -72,6 +71,8 @@ func TestFullAppSimulation(t *testing.T) {
 	}
 	require.NoError(t, err, "simulation setup failed")
 
+	config.ChainID = SimAppChainID
+
 	defer func() {
 		db.Close()
 		require.NoError(t, os.RemoveAll(dir))
@@ -86,7 +87,7 @@ func TestFullAppSimulation(t *testing.T) {
 		os.Stdout,
 		app.BaseApp,
 		simapp.AppStateFn(app.AppCodec(), app.SimulationManager()),
-		simtypes.RandomAccounts, // Replace with own random account function if using keys other than secp256k1
+		RandomAccounts, // Replace with own random account function if using keys other than secp256k1
 		simapp.SimulationOperations(app, app.AppCodec(), config),
 		app.ModuleAccountAddrs(),
 		config,
@@ -110,6 +111,8 @@ func TestAppImportExport(t *testing.T) {
 	}
 	require.NoError(t, err, "simulation setup failed")
 
+	config.ChainID = SimAppChainID
+
 	defer func() {
 		db.Close()
 		require.NoError(t, os.RemoveAll(dir))
@@ -124,7 +127,7 @@ func TestAppImportExport(t *testing.T) {
 		os.Stdout,
 		app.BaseApp,
 		simapp.AppStateFn(app.AppCodec(), app.SimulationManager()),
-		simtypes.RandomAccounts, // Replace with own random account function if using keys other than secp256k1
+		RandomAccounts, // Replace with own random account function if using keys other than secp256k1
 		simapp.SimulationOperations(app, app.AppCodec(), config),
 		app.ModuleAccountAddrs(),
 		config,
@@ -210,6 +213,8 @@ func TestAppSimulationAfterImport(t *testing.T) {
 	}
 	require.NoError(t, err, "simulation setup failed")
 
+	config.ChainID = SimAppChainID
+
 	defer func() {
 		db.Close()
 		require.NoError(t, os.RemoveAll(dir))
@@ -224,7 +229,7 @@ func TestAppSimulationAfterImport(t *testing.T) {
 		os.Stdout,
 		app.BaseApp,
 		simapp.AppStateFn(app.AppCodec(), app.SimulationManager()),
-		simtypes.RandomAccounts, // Replace with own random account function if using keys other than secp256k1
+		RandomAccounts, // Replace with own random account function if using keys other than secp256k1
 		simapp.SimulationOperations(app, app.AppCodec(), config),
 		app.ModuleAccountAddrs(),
 		config,
@@ -272,7 +277,7 @@ func TestAppSimulationAfterImport(t *testing.T) {
 		os.Stdout,
 		newApp.BaseApp,
 		simapp.AppStateFn(app.AppCodec(), app.SimulationManager()),
-		simtypes.RandomAccounts, // Replace with own random account function if using keys other than secp256k1
+		RandomAccounts, // Replace with own random account function if using keys other than secp256k1
 		simapp.SimulationOperations(newApp, newApp.AppCodec(), config),
 		app.ModuleAccountAddrs(),
 		config,
@@ -323,7 +328,7 @@ func TestAppStateDeterminism(t *testing.T) {
 				os.Stdout,
 				app.BaseApp,
 				simapp.AppStateFn(app.AppCodec(), app.SimulationManager()),
-				simtypes.RandomAccounts, // Replace with own random account function if using keys other than secp256k1
+				RandomAccounts, // Replace with own random account function if using keys other than secp256k1
 				simapp.SimulationOperations(app, app.AppCodec(), config),
 				app.ModuleAccountAddrs(),
 				config,

app/test_helpers.go

@@ -2,16 +2,28 @@ package app
 
 import (
 	"encoding/json"
+	"math/rand"
 	"time"
 
+	"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
 	"github.com/cosmos/cosmos-sdk/simapp"
+	"github.com/cosmos/cosmos-sdk/types/module"
+	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
+
 	"github.com/tharsis/ethermint/encoding"
+	ethermint "github.com/tharsis/ethermint/types"
 
+	"github.com/cosmos/cosmos-sdk/crypto/keys/ed25519"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/crypto"
 	abci "github.com/tendermint/tendermint/abci/types"
 	"github.com/tendermint/tendermint/libs/log"
 	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
 	tmtypes "github.com/tendermint/tendermint/types"
 	dbm "github.com/tendermint/tm-db"
+	"github.com/tharsis/ethermint/crypto/ethsecp256k1"
 )
 
 // DefaultConsensusParams defines the default Tendermint consensus params used in
@@ -62,3 +74,40 @@ func Setup(isCheckTx bool, patchGenesis func(*EthermintApp, simapp.GenesisState)
 
 	return app
 }
+
+func RandomGenesisAccounts(simState *module.SimulationState) authtypes.GenesisAccounts {
+	emptyCodeHash := crypto.Keccak256(nil)
+	genesisAccs := make(authtypes.GenesisAccounts, len(simState.Accounts))
+	for i, acc := range simState.Accounts {
+		bacc := authtypes.NewBaseAccountWithAddress(acc.Address)
+
+		ethacc := &ethermint.EthAccount{
+			BaseAccount: bacc,
+			CodeHash:    common.BytesToHash(emptyCodeHash).String(),
+		}
+		genesisAccs[i] = ethacc
+	}
+
+	return genesisAccs
+}
+
+func RandomAccounts(r *rand.Rand, n int) []simtypes.Account {
+	accs := make([]simtypes.Account, n)
+
+	for i := 0; i < n; i++ {
+		// don't need that much entropy for simulation
+		privkeySeed := make([]byte, 15)
+		_ = r.Read(privkeySeed)
+
+		prv := secp256k1.GenPrivKeyFromSecret(privkeySeed)
+		ethPrv := &ethsecp256k1.PrivKey{}
+		ethPrv.UnmarshalAmino(prv.Bytes())
+		accs[i].PrivKey = ethPrv
+		accs[i].PubKey = accs[i].PrivKey.PubKey()
+		accs[i].Address = sdk.AccAddress(accs[i].PubKey.Address())
+
+		accs[i].ConsKey = ed25519.GenPrivKeyFromSecret(privkeySeed)
+	}
+
+	return accs
+}

x/evm/module.go

@@ -188,5 +188,7 @@ func (AppModule) GenerateGenesisState(simState *module.SimulationState) {
 
 // WeightedOperations returns the all the evm module operations with their respective weights.
 func (am AppModule) WeightedOperations(simState module.SimulationState) []simtypes.WeightedOperation {
-	return nil
+	return simulation.WeightedOperations(
+		simState.AppParams, simState.Cdc, am.ak, am.keeper,
+	)
 }

x/evm/simulation/genesis.go

@@ -4,16 +4,17 @@ import (
 	"encoding/json"
 	"fmt"
 
+	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/types/module"
 
 	"github.com/tharsis/ethermint/x/evm/types"
 )
 
 // RandomizedGenState generates a random GenesisState for nft
 func RandomizedGenState(simState *module.SimulationState) {
-	params := types.NewParams(types.DefaultEVMDenom, true, true, types.DefaultChainConfig())
+	params := types.NewParams(sdk.DefaultBondDenom, true, true, types.DefaultChainConfig())
 	if simState.Rand.Uint32()%2 == 0 {
-		params = types.NewParams(types.DefaultEVMDenom, true, true, types.DefaultChainConfig(), 1344, 1884, 2200, 2929, 3198, 3529)
+		params = types.NewParams(sdk.DefaultBondDenom, true, true, types.DefaultChainConfig(), 1344, 1884, 2200, 2929, 3198, 3529)
 	}
 	evmGenesis := types.NewGenesisState(params, []types.GenesisAccount{})