package testutil import ( "encoding/hex" "encoding/json" "errors" "fmt" "math/big" "reflect" "time" "github.com/cosmos/cosmos-sdk/baseapp" sdk "github.com/cosmos/cosmos-sdk/types" authkeeper "github.com/cosmos/cosmos-sdk/x/auth/keeper" authtypes "github.com/cosmos/cosmos-sdk/x/auth/types" bankkeeper "github.com/cosmos/cosmos-sdk/x/bank/keeper" stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types" "github.com/ethereum/go-ethereum/accounts/abi" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/hexutil" ethtypes "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/crypto" "github.com/stretchr/testify/suite" abci "github.com/tendermint/tendermint/abci/types" "github.com/tendermint/tendermint/crypto/tmhash" tmproto "github.com/tendermint/tendermint/proto/tendermint/types" tmversion "github.com/tendermint/tendermint/proto/tendermint/version" tmtime "github.com/tendermint/tendermint/types/time" "github.com/tendermint/tendermint/version" "github.com/tharsis/ethermint/crypto/ethsecp256k1" "github.com/tharsis/ethermint/server/config" etherminttests "github.com/tharsis/ethermint/tests" etherminttypes "github.com/tharsis/ethermint/types" evmtypes "github.com/tharsis/ethermint/x/evm/types" feemarkettypes "github.com/tharsis/ethermint/x/feemarket/types" "github.com/kava-labs/kava/app" "github.com/kava-labs/kava/x/evmutil/keeper" "github.com/kava-labs/kava/x/evmutil/types" ) type Suite struct { suite.Suite App app.TestApp Ctx sdk.Context Address common.Address BankKeeper bankkeeper.Keeper AccountKeeper authkeeper.AccountKeeper Keeper keeper.Keeper EvmBankKeeper keeper.EvmBankKeeper Addrs []sdk.AccAddress EvmModuleAddr sdk.AccAddress QueryClient types.QueryClient QueryClientEvm evmtypes.QueryClient Key1 *ethsecp256k1.PrivKey Key1Addr types.InternalEVMAddress Key2 *ethsecp256k1.PrivKey } func (suite *Suite) SetupTest() { tApp := app.NewTestApp() suite.Ctx = tApp.NewContext(true, tmproto.Header{Height: 1, Time: tmtime.Now()}) suite.App = tApp suite.BankKeeper = tApp.GetBankKeeper() suite.AccountKeeper = tApp.GetAccountKeeper() suite.Keeper = tApp.GetEvmutilKeeper() suite.EvmBankKeeper = keeper.NewEvmBankKeeper(tApp.GetEvmutilKeeper(), suite.BankKeeper, suite.AccountKeeper) suite.EvmModuleAddr = suite.AccountKeeper.GetModuleAddress(evmtypes.ModuleName) // test evm user keys that have no minting permissions key1, err := ethsecp256k1.GenerateKey() suite.Require().NoError(err) suite.Key1 = key1 suite.Key1Addr = types.NewInternalEVMAddress(common.BytesToAddress(suite.Key1.PubKey().Address())) suite.Key2, err = ethsecp256k1.GenerateKey() suite.Require().NoError(err) _, addrs := app.GeneratePrivKeyAddressPairs(4) suite.Addrs = addrs evmGenesis := evmtypes.DefaultGenesisState() evmGenesis.Params.EvmDenom = "akava" feemarketGenesis := feemarkettypes.DefaultGenesisState() feemarketGenesis.Params.EnableHeight = 1 feemarketGenesis.Params.NoBaseFee = false cdc := suite.App.AppCodec() coins := sdk.NewCoins(sdk.NewInt64Coin("ukava", 1000_000_000_000_000_000)) authGS := app.NewFundedGenStateWithSameCoins(cdc, coins, []sdk.AccAddress{ sdk.AccAddress(suite.Key1.PubKey().Address()), sdk.AccAddress(suite.Key2.PubKey().Address()), }) gs := app.GenesisState{ evmtypes.ModuleName: cdc.MustMarshalJSON(evmGenesis), feemarkettypes.ModuleName: cdc.MustMarshalJSON(feemarketGenesis), } suite.App.InitializeFromGenesisStates(authGS, gs) // consensus key - needed to set up evm module consPriv, err := ethsecp256k1.GenerateKey() suite.Require().NoError(err) consAddress := sdk.ConsAddress(consPriv.PubKey().Address()) // InitializeFromGenesisStates commits first block so we start at 2 here suite.Ctx = suite.App.NewContext(false, tmproto.Header{ Height: suite.App.LastBlockHeight() + 1, ChainID: "kavatest_1-1", Time: time.Now().UTC(), ProposerAddress: consAddress.Bytes(), Version: tmversion.Consensus{ Block: version.BlockProtocol, }, LastBlockId: tmproto.BlockID{ Hash: tmhash.Sum([]byte("block_id")), PartSetHeader: tmproto.PartSetHeader{ Total: 11, Hash: tmhash.Sum([]byte("partset_header")), }, }, AppHash: tmhash.Sum([]byte("app")), DataHash: tmhash.Sum([]byte("data")), EvidenceHash: tmhash.Sum([]byte("evidence")), ValidatorsHash: tmhash.Sum([]byte("validators")), NextValidatorsHash: tmhash.Sum([]byte("next_validators")), ConsensusHash: tmhash.Sum([]byte("consensus")), LastResultsHash: tmhash.Sum([]byte("last_result")), }) // We need to set the validator as calling the EVM looks up the validator address // https://github.com/tharsis/ethermint/blob/f21592ebfe74da7590eb42ed926dae970b2a9a3f/x/evm/keeper/state_transition.go#L487 // evmkeeper.EVMConfig() will return error "failed to load evm config" if not set acc := ðerminttypes.EthAccount{ BaseAccount: authtypes.NewBaseAccount(sdk.AccAddress(suite.Address.Bytes()), nil, 0, 0), CodeHash: common.BytesToHash(crypto.Keccak256(nil)).String(), } suite.AccountKeeper.SetAccount(suite.Ctx, acc) valAddr := sdk.ValAddress(suite.Address.Bytes()) validator, err := stakingtypes.NewValidator(valAddr, consPriv.PubKey(), stakingtypes.Description{}) suite.Require().NoError(err) err = suite.App.GetStakingKeeper().SetValidatorByConsAddr(suite.Ctx, validator) suite.Require().NoError(err) suite.App.GetStakingKeeper().SetValidator(suite.Ctx, validator) // add conversion pair for first module deployed contract to evmutil params suite.Keeper.SetParams(suite.Ctx, types.NewParams( types.NewConversionPairs( types.NewConversionPair( // First contract this module deploys MustNewInternalEVMAddressFromString("0x15932E26f5BD4923d46a2b205191C4b5d5f43FE3"), "erc20/usdc", ), ), )) queryHelper := baseapp.NewQueryServerTestHelper(suite.Ctx, suite.App.InterfaceRegistry()) evmtypes.RegisterQueryServer(queryHelper, suite.App.GetEvmKeeper()) suite.QueryClientEvm = evmtypes.NewQueryClient(queryHelper) types.RegisterQueryServer(queryHelper, keeper.NewQueryServerImpl(suite.App.GetEvmutilKeeper())) suite.QueryClient = types.NewQueryClient(queryHelper) // We need to commit so that the ethermint feemarket beginblock runs to set the minfee // feeMarketKeeper.GetBaseFee() will return nil otherwise suite.Commit() } func (suite *Suite) Commit() { _ = suite.App.Commit() header := suite.Ctx.BlockHeader() header.Height += 1 suite.App.BeginBlock(abci.RequestBeginBlock{ Header: header, }) // update ctx suite.Ctx = suite.App.NewContext(false, header) } func (suite *Suite) FundAccountWithKava(addr sdk.AccAddress, coins sdk.Coins) { ukava := coins.AmountOf("ukava") if ukava.IsPositive() { err := suite.App.FundAccount(suite.Ctx, addr, sdk.NewCoins(sdk.NewCoin("ukava", ukava))) suite.Require().NoError(err) } akava := coins.AmountOf("akava") if akava.IsPositive() { err := suite.Keeper.SetBalance(suite.Ctx, addr, akava) suite.Require().NoError(err) } } func (suite *Suite) FundModuleAccountWithKava(moduleName string, coins sdk.Coins) { ukava := coins.AmountOf("ukava") if ukava.IsPositive() { err := suite.App.FundModuleAccount(suite.Ctx, moduleName, sdk.NewCoins(sdk.NewCoin("ukava", ukava))) suite.Require().NoError(err) } akava := coins.AmountOf("akava") if akava.IsPositive() { addr := suite.AccountKeeper.GetModuleAddress(moduleName) err := suite.Keeper.SetBalance(suite.Ctx, addr, akava) suite.Require().NoError(err) } } func (suite *Suite) DeployERC20() types.InternalEVMAddress { // make sure module account is created // qq: any better ways to do this? suite.App.FundModuleAccount( suite.Ctx, types.ModuleName, sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(0))), ) contractAddr, err := suite.Keeper.DeployTestMintableERC20Contract(suite.Ctx, "USDC", "USDC", uint8(18)) suite.Require().NoError(err) suite.Require().Greater(len(contractAddr.Address), 0) return contractAddr } func (suite *Suite) GetERC20BalanceOf( contractAbi abi.ABI, contractAddr types.InternalEVMAddress, accountAddr types.InternalEVMAddress, ) *big.Int { // Query ERC20.balanceOf() addr := common.BytesToAddress(suite.Key1.PubKey().Address()) res, err := suite.QueryContract( types.ERC20MintableBurnableContract.ABI, addr, suite.Key1, contractAddr, "balanceOf", accountAddr.Address, ) suite.Require().NoError(err) suite.Require().Len(res, 1) balance, ok := res[0].(*big.Int) suite.Require().True(ok, "balanceOf should respond with *big.Int") return balance } func (suite *Suite) QueryContract( contractAbi abi.ABI, from common.Address, fromKey *ethsecp256k1.PrivKey, contract types.InternalEVMAddress, method string, args ...interface{}, ) ([]interface{}, error) { // Pack query args data, err := contractAbi.Pack(method, args...) suite.Require().NoError(err) // Send TX res, err := suite.SendTx(contract, from, fromKey, data) suite.Require().NoError(err) // Check for VM errors and unpack returned data switch res.VmError { case vm.ErrExecutionReverted.Error(): response, err := abi.UnpackRevert(res.Ret) suite.Require().NoError(err) return nil, errors.New(response) case "": // No error, continue default: panic(fmt.Sprintf("unhandled vm error response: %v", res.VmError)) } // Unpack response unpackedRes, err := contractAbi.Unpack(method, res.Ret) suite.Require().NoErrorf(err, "failed to unpack method %v response", method) return unpackedRes, nil } // SendTx submits a transaction to the block. func (suite *Suite) SendTx( contractAddr types.InternalEVMAddress, from common.Address, signerKey *ethsecp256k1.PrivKey, transferData []byte, ) (*evmtypes.MsgEthereumTxResponse, error) { ctx := sdk.WrapSDKContext(suite.Ctx) chainID := suite.App.GetEvmKeeper().ChainID() args, err := json.Marshal(&evmtypes.TransactionArgs{ To: &contractAddr.Address, From: &from, Data: (*hexutil.Bytes)(&transferData), }) if err != nil { return nil, err } gasRes, err := suite.QueryClientEvm.EstimateGas(ctx, &evmtypes.EthCallRequest{ Args: args, GasCap: config.DefaultGasCap, }) if err != nil { return nil, err } nonce := suite.App.GetEvmKeeper().GetNonce(suite.Ctx, suite.Address) baseFee := suite.App.GetFeeMarketKeeper().GetBaseFee(suite.Ctx) suite.Require().NotNil(baseFee, "base fee is nil") // Mint the max gas to the FeeCollector to ensure balance in case of refund suite.MintFeeCollector(sdk.NewCoins( sdk.NewCoin( "ukava", sdk.NewInt(baseFee.Int64()*int64(gasRes.Gas*2)), ))) ercTransferTx := evmtypes.NewTx( chainID, nonce, &contractAddr.Address, nil, // amount gasRes.Gas*2, // gasLimit, TODO: runs out of gas with just res.Gas, ex: estimated was 21572 but used 24814 nil, // gasPrice suite.App.GetFeeMarketKeeper().GetBaseFee(suite.Ctx), // gasFeeCap big.NewInt(1), // gasTipCap transferData, ðtypes.AccessList{}, // accesses ) ercTransferTx.From = hex.EncodeToString(signerKey.PubKey().Address()) err = ercTransferTx.Sign(ethtypes.LatestSignerForChainID(chainID), etherminttests.NewSigner(signerKey)) if err != nil { return nil, err } rsp, err := suite.App.GetEvmKeeper().EthereumTx(ctx, ercTransferTx) if err != nil { return nil, err } // Do not check vm error here since we want to check for errors later return rsp, nil } func (suite *Suite) MintFeeCollector(coins sdk.Coins) { err := suite.App.FundModuleAccount(suite.Ctx, authtypes.FeeCollectorName, coins) suite.Require().NoError(err) } // GetEvents returns emitted events on the sdk context func (suite *Suite) GetEvents() sdk.Events { return suite.Ctx.EventManager().Events() } // EventsContains asserts that the expected event is in the provided events func (suite *Suite) EventsContains(events sdk.Events, expectedEvent sdk.Event) { foundMatch := false for _, event := range events { if event.Type == expectedEvent.Type { if reflect.DeepEqual(attrsToMap(expectedEvent.Attributes), attrsToMap(event.Attributes)) { foundMatch = true } } } suite.Truef(foundMatch, "event of type %s not found or did not match", expectedEvent.Type) } // EventsDoNotContain asserts that the event is **not** is in the provided events func (suite *Suite) EventsDoNotContain(events sdk.Events, eventType string) { foundMatch := false for _, event := range events { if event.Type == eventType { foundMatch = true } } suite.Falsef(foundMatch, "event of type %s should not be found, but was found", eventType) } func attrsToMap(attrs []abci.EventAttribute) []sdk.Attribute { out := []sdk.Attribute{} for _, attr := range attrs { out = append(out, sdk.NewAttribute(string(attr.Key), string(attr.Value))) } return out } // MustNewInternalEVMAddressFromString returns a new InternalEVMAddress from a // hex string. This will panic if the input hex string is invalid. func MustNewInternalEVMAddressFromString(addrStr string) types.InternalEVMAddress { addr, err := types.NewInternalEVMAddressFromString(addrStr) if err != nil { panic(err) } return addr }