0g-chain/tests/e2e/testutil/init_evm.go

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package testutil
import (
"context"
"fmt"
"math/big"
"github.com/ethereum/go-ethereum/common"
ethtypes "github.com/ethereum/go-ethereum/core/types"
"github.com/kava-labs/kava/tests/e2e/contracts/greeter"
"github.com/kava-labs/kava/tests/util"
"github.com/kava-labs/kava/x/earn/types"
evmutiltypes "github.com/kava-labs/kava/x/evmutil/types"
)
// InitKavaEvmData is run after the chain is running, but before the tests are run.
// It is used to initialize some EVM state, such as deploying contracts.
func (suite *E2eTestSuite) InitKavaEvmData() {
whale := suite.Kava.GetAccount(FundedAccountName)
// ensure funded account has nonzero erc20 balance
balance := suite.Kava.GetErc20Balance(suite.DeployedErc20.Address, whale.EvmAddress)
if balance.Cmp(big.NewInt(0)) != 1 {
panic(fmt.Sprintf("expected funded account (%s) to have erc20 balance", whale.EvmAddress.Hex()))
}
// expect the erc20 to be enabled for conversion to sdk.Coin
params, err := suite.Kava.Evmutil.Params(context.Background(), &evmutiltypes.QueryParamsRequest{})
if err != nil {
panic(fmt.Sprintf("failed to fetch evmutil params during init: %s", err))
}
found := false
erc20Addr := suite.DeployedErc20.Address.Hex()
for _, p := range params.Params.EnabledConversionPairs {
if common.BytesToAddress(p.KavaERC20Address).Hex() == erc20Addr {
found = true
suite.DeployedErc20.CosmosDenom = p.Denom
}
}
if !found {
panic(fmt.Sprintf("erc20 %s must be enabled for conversion to cosmos coin", erc20Addr))
}
// expect the erc20's cosmos denom to be a supported earn vault
_, err = suite.Kava.Earn.Vault(
context.Background(),
types.NewQueryVaultRequest(suite.DeployedErc20.CosmosDenom),
)
if err != nil {
panic(fmt.Sprintf("failed to find earn vault with denom %s: %s", suite.DeployedErc20.CosmosDenom, err))
}
// deploy an example contract
greeterAddr, _, _, err := greeter.DeployGreeter(
whale.evmSigner.Auth,
whale.evmSigner.EvmClient,
"what's up!",
)
suite.NoError(err, "failed to deploy a contract to the EVM")
suite.Kava.ContractAddrs["greeter"] = greeterAddr
}
// FundKavaErc20Balance sends the pre-deployed ERC20 token to the `toAddress`.
func (suite *E2eTestSuite) FundKavaErc20Balance(toAddress common.Address, amount *big.Int) EvmTxResponse {
// funded account should have erc20 balance
whale := suite.Kava.GetAccount(FundedAccountName)
data := util.BuildErc20TransferCallData(toAddress, amount)
nonce, err := suite.Kava.EvmClient.PendingNonceAt(context.Background(), whale.EvmAddress)
suite.NoError(err)
req := util.EvmTxRequest{
Tx: ethtypes.NewTransaction(nonce, suite.DeployedErc20.Address, big.NewInt(0), 1e5, big.NewInt(1e10), data),
Data: fmt.Sprintf("fund %s with ERC20 balance (%s)", toAddress.Hex(), amount.String()),
}
return whale.SignAndBroadcastEvmTx(req)
}