0g-chain/tests/e2e/e2e_min_fees_test.go
2024-08-03 15:04:46 +08:00

79 lines
2.3 KiB
Go

package e2e_test
import (
"context"
"math/big"
"os"
"path/filepath"
"strings"
"github.com/pelletier/go-toml/v2"
sdk "github.com/cosmos/cosmos-sdk/types"
ethtypes "github.com/ethereum/go-ethereum/core/types"
"github.com/0glabs/0g-chain/app"
"github.com/0glabs/0g-chain/chaincfg"
"github.com/0glabs/0g-chain/tests/util"
)
func (suite *IntegrationTestSuite) TestEthGasPriceReturnsMinFee() {
suite.SkipIfKvtoolDisabled()
// read expected min fee from app.toml
minGasPrices, err := getMinFeeFromAppToml(util.ZgChainHomePath())
suite.NoError(err)
// evm uses neuron, get neuron min fee
evmMinGas := minGasPrices.AmountOf(chaincfg.BaseDenom).TruncateInt().BigInt()
// returns eth_gasPrice, units in a0gi
gasPrice, err := suite.ZgChain.EvmClient.SuggestGasPrice(context.Background())
suite.NoError(err)
suite.Equal(evmMinGas, gasPrice)
}
func (suite *IntegrationTestSuite) TestEvmRespectsMinFee() {
suite.SkipIfKvtoolDisabled()
// setup sender & receiver
sender := suite.ZgChain.NewFundedAccount("evm-min-fee-test-sender", sdk.NewCoins(a0gi(big.NewInt(1e3))))
randoReceiver := util.SdkToEvmAddress(app.RandomAddress())
// get min gas price for evm (from app.toml)
minFees, err := getMinFeeFromAppToml(util.ZgChainHomePath())
suite.NoError(err)
minGasPrice := minFees.AmountOf(chaincfg.BaseDenom).TruncateInt()
// attempt tx with less than min gas price (min fee - 1)
tooLowGasPrice := minGasPrice.Sub(sdk.OneInt()).BigInt()
req := util.EvmTxRequest{
Tx: ethtypes.NewTransaction(0, randoReceiver, big.NewInt(5e2), 1e5, tooLowGasPrice, nil),
Data: "this tx should fail because it's gas price is too low",
}
res := sender.SignAndBroadcastEvmTx(req)
// expect the tx to fail!
suite.ErrorAs(res.Err, &util.ErrEvmFailedToBroadcast{})
suite.ErrorContains(res.Err, "insufficient fee")
}
func getMinFeeFromAppToml(zgChainHome string) (sdk.DecCoins, error) {
// read the expected min gas price from app.toml
parsed := struct {
MinGasPrices string `toml:"minimum-gas-prices"`
}{}
appToml, err := os.ReadFile(filepath.Join(zgChainHome, "config", "app.toml"))
if err != nil {
return nil, err
}
err = toml.Unmarshal(appToml, &parsed)
if err != nil {
return nil, err
}
// convert to dec coins
return sdk.ParseDecCoins(strings.ReplaceAll(parsed.MinGasPrices, ";", ","))
}