0g-chain/x/evmutil/keeper/msg_server_test.go
2024-08-02 12:39:55 +08:00

731 lines
23 KiB
Go

package keeper_test
import (
"math/big"
"testing"
"github.com/stretchr/testify/suite"
sdkmath "cosmossdk.io/math"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/math"
"github.com/0glabs/0g-chain/app"
"github.com/0glabs/0g-chain/x/evmutil/keeper"
"github.com/0glabs/0g-chain/x/evmutil/testutil"
"github.com/0glabs/0g-chain/x/evmutil/types"
)
type MsgServerSuite struct {
testutil.Suite
msgServer types.MsgServer
}
func (suite *MsgServerSuite) SetupTest() {
suite.Suite.SetupTest()
suite.msgServer = keeper.NewMsgServerImpl(suite.App.GetEvmutilKeeper())
}
func TestMsgServerSuite(t *testing.T) {
suite.Run(t, new(MsgServerSuite))
}
func (suite *MsgServerSuite) TestConvertCoinToERC20() {
invoker, err := sdk.AccAddressFromBech32("0g123fxg0l602etulhhcdm0vt7l57qya5wjcrwhzz")
suite.Require().NoError(err)
err = suite.App.FundAccount(suite.Ctx, invoker, sdk.NewCoins(sdk.NewCoin("erc20/usdc", sdkmath.NewInt(10000))))
suite.Require().NoError(err)
contractAddr := suite.DeployERC20()
pair := types.NewConversionPair(
contractAddr,
"erc20/usdc",
)
// Module account should have starting balance
pairStartingBal := big.NewInt(10000)
err = suite.Keeper.MintERC20(
suite.Ctx,
pair.GetAddress(), // contractAddr
types.NewInternalEVMAddress(types.ModuleEVMAddress), //receiver
pairStartingBal,
)
suite.Require().NoError(err)
type errArgs struct {
expectPass bool
contains string
}
tests := []struct {
name string
msg types.MsgConvertCoinToERC20
errArgs errArgs
}{
{
"valid",
types.NewMsgConvertCoinToERC20(
invoker.String(),
"0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
sdk.NewCoin("erc20/usdc", sdkmath.NewInt(1234)),
),
errArgs{
expectPass: true,
},
},
{
"invalid - odd length hex address",
types.NewMsgConvertCoinToERC20(
invoker.String(),
"0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc",
sdk.NewCoin("erc20/usdc", sdkmath.NewInt(1234)),
),
errArgs{
expectPass: false,
contains: "invalid Receiver address: string is not a hex address",
},
},
// Amount coin is not validated by msg_server, but on msg itself
}
for _, tc := range tests {
suite.Run(tc.name, func() {
_, err := suite.msgServer.ConvertCoinToERC20(sdk.WrapSDKContext(suite.Ctx), &tc.msg)
if tc.errArgs.expectPass {
suite.Require().NoError(err)
bal := suite.GetERC20BalanceOf(
types.ERC20MintableBurnableContract.ABI,
pair.GetAddress(),
testutil.MustNewInternalEVMAddressFromString(tc.msg.Receiver),
)
suite.Require().Equal(tc.msg.Amount.Amount.BigInt(), bal, "balance should match converted amount")
// msg server event
suite.EventsContains(suite.GetEvents(),
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, tc.msg.Initiator),
))
// keeper event
suite.EventsContains(suite.GetEvents(),
sdk.NewEvent(
types.EventTypeConvertCoinToERC20,
sdk.NewAttribute(types.AttributeKeyInitiator, tc.msg.Initiator),
sdk.NewAttribute(types.AttributeKeyReceiver, tc.msg.Receiver),
sdk.NewAttribute(types.AttributeKeyERC20Address, pair.GetAddress().String()),
sdk.NewAttribute(types.AttributeKeyAmount, tc.msg.Amount.String()),
))
} else {
suite.Require().Error(err)
suite.Require().Contains(err.Error(), tc.errArgs.contains)
}
})
}
}
func (suite *MsgServerSuite) TestConvertERC20ToCoin() {
contractAddr := suite.DeployERC20()
pair := types.NewConversionPair(
contractAddr,
"erc20/usdc",
)
// give invoker account some erc20 usdc to begin with
invoker := testutil.MustNewInternalEVMAddressFromString("0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2")
pairStartingBal := big.NewInt(10_000_000)
err := suite.Keeper.MintERC20(
suite.Ctx,
pair.GetAddress(), // contractAddr
invoker, //receiver
pairStartingBal,
)
suite.Require().NoError(err)
invokerCosmosAddr, err := sdk.AccAddressFromHexUnsafe(invoker.String()[2:])
suite.Require().NoError(err)
// create user account, otherwise `CallEVMWithData` will fail due to failing to get user account when finding its sequence.
err = suite.App.FundAccount(suite.Ctx, invokerCosmosAddr, sdk.NewCoins(sdk.NewCoin(pair.Denom, sdk.ZeroInt())))
suite.Require().NoError(err)
type errArgs struct {
expectPass bool
contains string
}
tests := []struct {
name string
msg types.MsgConvertERC20ToCoin
approvalAmount *big.Int
errArgs errArgs
}{
{
"valid",
types.NewMsgConvertERC20ToCoin(
invoker,
invokerCosmosAddr,
contractAddr,
sdkmath.NewInt(10_000),
),
math.MaxBig256,
errArgs{
expectPass: true,
},
},
{
"invalid - invalid hex address",
types.MsgConvertERC20ToCoin{
Initiator: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc",
Receiver: invokerCosmosAddr.String(),
ZgChainERC20Address: contractAddr.String(),
Amount: sdkmath.NewInt(10_000),
},
math.MaxBig256,
errArgs{
expectPass: false,
contains: "invalid initiator address: string is not a hex address",
},
},
{
"invalid - insufficient coins",
types.NewMsgConvertERC20ToCoin(
invoker,
invokerCosmosAddr,
contractAddr,
sdkmath.NewIntFromBigInt(pairStartingBal).Add(sdk.OneInt()),
),
math.MaxBig256,
errArgs{
expectPass: false,
contains: "transfer amount exceeds balance",
},
},
{
"invalid - contract address",
types.NewMsgConvertERC20ToCoin(
invoker,
invokerCosmosAddr,
testutil.MustNewInternalEVMAddressFromString("0x7Bbf300890857b8c241b219C6a489431669b3aFA"),
sdkmath.NewInt(10_000),
),
math.MaxBig256,
errArgs{
expectPass: false,
contains: "ERC20 token not enabled to convert to sdk.Coin",
},
},
}
for _, tc := range tests {
suite.Run(tc.name, func() {
_, err := suite.msgServer.ConvertERC20ToCoin(sdk.WrapSDKContext(suite.Ctx), &tc.msg)
if tc.errArgs.expectPass {
suite.Require().NoError(err)
// validate user balance after conversion
bal := suite.GetERC20BalanceOf(
types.ERC20MintableBurnableContract.ABI,
pair.GetAddress(),
testutil.MustNewInternalEVMAddressFromString(tc.msg.Initiator),
)
expectedBal := sdkmath.NewIntFromBigInt(pairStartingBal).Sub(tc.msg.Amount)
suite.Require().Equal(expectedBal.BigInt(), bal, "user erc20 balance is invalid")
// validate user coin balance
coinBal := suite.App.GetBankKeeper().GetBalance(suite.Ctx, invokerCosmosAddr, pair.Denom)
suite.Require().Equal(tc.msg.Amount, coinBal.Amount, "user coin balance is invalid")
// msg server event
suite.EventsContains(suite.GetEvents(),
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, tc.msg.Initiator),
))
// keeper event
suite.EventsContains(suite.GetEvents(),
sdk.NewEvent(
types.EventTypeConvertERC20ToCoin,
sdk.NewAttribute(types.AttributeKeyERC20Address, pair.GetAddress().String()),
sdk.NewAttribute(types.AttributeKeyInitiator, tc.msg.Initiator),
sdk.NewAttribute(types.AttributeKeyReceiver, tc.msg.Receiver),
sdk.NewAttribute(types.AttributeKeyAmount, sdk.NewCoin(pair.Denom, tc.msg.Amount).String()),
))
} else {
suite.Require().Error(err)
suite.Require().Contains(err.Error(), tc.errArgs.contains)
}
})
}
}
func (suite *MsgServerSuite) TestConvertCosmosCoinToERC20_InitialContractDeploy() {
allowedDenom := "ibc/27394FB092D2ECCD56123C74F36E4C1F926001CEADA9CA97EA622B25F41E5EB2"
initialFunding := int64(1e10)
fundedAccount := app.RandomAddress()
setup := func() {
suite.SetupTest()
// make the denom allowed for conversion
params := suite.Keeper.GetParams(suite.Ctx)
params.AllowedCosmosDenoms = types.NewAllowedCosmosCoinERC20Tokens(
types.NewAllowedCosmosCoinERC20Token(allowedDenom, "0gChain EVM Atom", "ATOM", 6),
)
suite.Keeper.SetParams(suite.Ctx, params)
// fund account
err := suite.App.FundAccount(suite.Ctx, fundedAccount, sdk.NewCoins(
sdk.NewInt64Coin(allowedDenom, initialFunding),
))
suite.NoError(err, "failed to initially fund account")
}
testCases := []struct {
name string
msg types.MsgConvertCosmosCoinToERC20
amountConverted sdkmath.Int
expectedErr string
}{
{
name: "valid - first conversion deploys contract, send to self",
msg: types.NewMsgConvertCosmosCoinToERC20(
fundedAccount.String(),
common.BytesToAddress(fundedAccount.Bytes()).Hex(), // it's me!
sdk.NewInt64Coin(allowedDenom, 5e7),
),
amountConverted: sdkmath.NewInt(5e7),
expectedErr: "",
},
{
name: "valid - first conversion deploys contract, send to other",
msg: types.NewMsgConvertCosmosCoinToERC20(
fundedAccount.String(),
testutil.RandomEvmAddress().Hex(), // someone else!
sdk.NewInt64Coin(allowedDenom, 9993317),
),
amountConverted: sdkmath.NewInt(9993317),
expectedErr: "",
},
{
name: "invalid - un-allowed denom",
msg: types.NewMsgConvertCosmosCoinToERC20(
app.RandomAddress().String(),
testutil.RandomEvmAddress().Hex(),
sdk.NewInt64Coin("not-allowed-denom", 1e4),
),
expectedErr: "sdk.Coin not enabled to convert to ERC20 token",
},
{
name: "invalid - bad initiator",
msg: types.NewMsgConvertCosmosCoinToERC20(
"invalid-0g-address",
testutil.RandomEvmAddress().Hex(),
sdk.NewInt64Coin(allowedDenom, 1e4),
),
expectedErr: "invalid initiator address",
},
{
name: "invalid - bad receiver",
msg: types.NewMsgConvertCosmosCoinToERC20(
app.RandomAddress().String(),
"invalid-0x-address",
sdk.NewInt64Coin(allowedDenom, 1e4),
),
expectedErr: "invalid receiver address",
},
{
name: "invalid - bad receiver",
msg: types.NewMsgConvertCosmosCoinToERC20(
app.RandomAddress().String(),
"invalid-0x-address",
sdk.NewInt64Coin(allowedDenom, 1e4),
),
expectedErr: "invalid receiver address",
},
{
name: "invalid - insufficient balance",
msg: types.NewMsgConvertCosmosCoinToERC20(
fundedAccount.String(),
testutil.RandomEvmAddress().Hex(),
sdk.NewInt64Coin(allowedDenom, initialFunding+1),
),
expectedErr: "insufficient funds",
},
// NOTE: a zero amount tx passes in this scope but will fail to pass ValidateBasic()
}
for _, tc := range testCases {
suite.Run(tc.name, func() {
// initial setup
setup()
moduleBalanceBefore := suite.ModuleBalance(allowedDenom)
// submit message
_, err := suite.msgServer.ConvertCosmosCoinToERC20(suite.Ctx, &tc.msg)
// verify error, if expected
if tc.expectedErr != "" {
suite.ErrorContains(err, tc.expectedErr)
// the contract wasn't previously deployed, so still shouldn't be
_, found := suite.Keeper.GetDeployedCosmosCoinContract(suite.Ctx, allowedDenom)
suite.False(found)
return
}
// verify success
suite.NoError(err)
initiator := sdk.MustAccAddressFromBech32(tc.msg.Initiator)
receiver := testutil.MustNewInternalEVMAddressFromString(tc.msg.Receiver)
// initiator no longer has sdk coins
cosmosBalanceAfter := suite.BankKeeper.GetBalance(suite.Ctx, initiator, allowedDenom)
suite.Equal(
sdkmath.NewInt(initialFunding).Sub(tc.amountConverted),
cosmosBalanceAfter.Amount,
"unexpected sdk.Coin balance of initiator",
)
// sdk coins are locked into module
moduleBalanceAfter := suite.ModuleBalance(allowedDenom)
suite.Equal(
moduleBalanceBefore.Add(tc.amountConverted),
moduleBalanceAfter,
"unexpected module balance",
)
// deployed contract address is registered in module store
contractAddress, found := suite.Keeper.GetDeployedCosmosCoinContract(suite.Ctx, allowedDenom)
suite.True(found, "expected deployed contract address to be registered, found none")
// receiver has been minted correct number of tokens
erc20Balance, err := suite.Keeper.QueryERC20BalanceOf(suite.Ctx, contractAddress, receiver)
suite.NoError(err)
suite.Equal(tc.amountConverted.BigInt(), erc20Balance, "unexpected erc20 balance for receiver")
// msg server event
suite.EventsContains(suite.GetEvents(),
sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, initiator.String()),
))
// keeper event
suite.EventsContains(suite.GetEvents(),
sdk.NewEvent(
types.EventTypeConvertCosmosCoinToERC20,
sdk.NewAttribute(types.AttributeKeyInitiator, initiator.String()),
sdk.NewAttribute(types.AttributeKeyReceiver, receiver.String()),
sdk.NewAttribute(types.AttributeKeyERC20Address, contractAddress.Hex()),
sdk.NewAttribute(types.AttributeKeyAmount, tc.msg.Amount.String()),
))
})
}
}
func (suite *MsgServerSuite) TestConvertCosmosCoinToERC20_AlreadyDeployedContract() {
allowedDenom := "ibc/27394FB092D2ECCD56123C74F36E4C1F926001CEADA9CA97EA622B25F41E5EB2"
initialFunding := int64(1e10)
fundedAccount := app.RandomAddress()
amount := sdkmath.NewInt(6e8)
receiver1 := types.BytesToInternalEVMAddress(app.RandomAddress().Bytes())
receiver2 := types.BytesToInternalEVMAddress(app.RandomAddress().Bytes())
suite.SetupTest()
// make the denom allowed for conversion
params := suite.Keeper.GetParams(suite.Ctx)
params.AllowedCosmosDenoms = types.NewAllowedCosmosCoinERC20Tokens(
types.NewAllowedCosmosCoinERC20Token(allowedDenom, "0gChain EVM Atom", "ATOM", 6),
)
suite.Keeper.SetParams(suite.Ctx, params)
// fund account
err := suite.App.FundAccount(suite.Ctx, fundedAccount, sdk.NewCoins(
sdk.NewInt64Coin(allowedDenom, initialFunding),
))
suite.NoError(err, "failed to initially fund account")
// verify contract is not deployed
_, found := suite.Keeper.GetDeployedCosmosCoinContract(suite.Ctx, allowedDenom)
suite.False(found)
// initial convert deploys contract
msg := types.NewMsgConvertCosmosCoinToERC20(
fundedAccount.String(),
receiver1.Hex(),
sdk.NewCoin(allowedDenom, amount),
)
_, err = suite.msgServer.ConvertCosmosCoinToERC20(suite.Ctx, &msg)
suite.NoError(err)
contractAddress, found := suite.Keeper.GetDeployedCosmosCoinContract(suite.Ctx, allowedDenom)
suite.True(found)
// second convert uses same contract
msg.Receiver = receiver2.Hex()
_, err = suite.msgServer.ConvertCosmosCoinToERC20(suite.Ctx, &msg)
suite.NoError(err)
after2ndUseAddress, found := suite.Keeper.GetDeployedCosmosCoinContract(suite.Ctx, allowedDenom)
suite.True(found)
suite.Equal(contractAddress, after2ndUseAddress, "contract address should remain the same")
// check balances
bal1, err := suite.Keeper.QueryERC20BalanceOf(suite.Ctx, contractAddress, receiver1)
suite.NoError(err)
suite.Equal(amount.BigInt(), bal1)
bal2, err := suite.Keeper.QueryERC20BalanceOf(suite.Ctx, contractAddress, receiver2)
suite.NoError(err)
suite.Equal(amount.BigInt(), bal2)
// check total supply
caller, key := testutil.RandomEvmAccount()
totalSupply, err := suite.QueryContract(
types.ERC20ZgChainWrappedCosmosCoinContract.ABI,
caller,
key,
contractAddress,
"totalSupply",
)
suite.NoError(err)
suite.Len(totalSupply, 1)
suite.Equal(amount.MulRaw(2).BigInt(), totalSupply[0].(*big.Int))
}
func (suite *MsgServerSuite) TestConvertCosmosCoinFromERC20() {
denom := "magic"
tokenInfo := types.NewAllowedCosmosCoinERC20Token(denom, "Cosmos Coin", "MAGIC", 6)
initialPosition := sdk.NewInt64Coin(denom, 1e10)
initiator := testutil.RandomInternalEVMAddress()
var contractAddress types.InternalEVMAddress
setup := func() {
suite.SetupTest()
// allow conversion to the denom
params := suite.Keeper.GetParams(suite.Ctx)
params.AllowedCosmosDenoms = append(params.AllowedCosmosDenoms, tokenInfo)
suite.Keeper.SetParams(suite.Ctx, params)
// setup initial position
addr := app.RandomAddress()
err := suite.App.FundAccount(suite.Ctx, addr, sdk.NewCoins(initialPosition))
suite.NoError(err)
err = suite.Keeper.ConvertCosmosCoinToERC20(suite.Ctx, addr, initiator, initialPosition)
suite.NoError(err)
contractAddress, _ = suite.Keeper.GetDeployedCosmosCoinContract(suite.Ctx, denom)
}
testCases := []struct {
name string
msg types.MsgConvertCosmosCoinFromERC20
amountConverted sdkmath.Int
expectedErr string
}{
{
name: "valid - full convert",
msg: types.NewMsgConvertCosmosCoinFromERC20(
initiator.Hex(),
app.RandomAddress().String(),
initialPosition,
),
amountConverted: initialPosition.Amount,
expectedErr: "",
},
{
name: "valid - partial convert",
msg: types.NewMsgConvertCosmosCoinFromERC20(
initiator.Hex(),
app.RandomAddress().String(),
sdk.NewInt64Coin(denom, 123456),
),
amountConverted: sdkmath.NewInt(123456),
expectedErr: "",
},
{
name: "invalid - bad initiator",
msg: types.NewMsgConvertCosmosCoinFromERC20(
"invalid-address",
app.RandomAddress().String(),
sdk.NewInt64Coin(denom, 123456),
),
amountConverted: sdkmath.ZeroInt(),
expectedErr: "invalid initiator address",
},
{
name: "invalid - bad receiver",
msg: types.NewMsgConvertCosmosCoinFromERC20(
testutil.RandomEvmAddress().Hex(),
"invalid-address",
sdk.NewInt64Coin(denom, 123456),
),
amountConverted: sdkmath.ZeroInt(),
expectedErr: "invalid receiver address",
},
{
name: "invalid - unsupported asset",
msg: types.NewMsgConvertCosmosCoinFromERC20(
initiator.Hex(),
app.RandomAddress().String(),
sdk.NewInt64Coin("not-supported", 123456),
),
amountConverted: sdkmath.ZeroInt(),
expectedErr: "no erc20 contract found",
},
{
name: "invalid - insufficient funds",
msg: types.NewMsgConvertCosmosCoinFromERC20(
initiator.Hex(),
app.RandomAddress().String(),
initialPosition.AddAmount(sdkmath.OneInt()),
),
amountConverted: sdkmath.ZeroInt(),
expectedErr: "failed to convert to cosmos coins: insufficient funds",
},
}
for _, tc := range testCases {
suite.Run(tc.name, func() {
setup()
_, err := suite.msgServer.ConvertCosmosCoinFromERC20(suite.Ctx, &tc.msg)
if tc.expectedErr != "" {
suite.ErrorContains(err, tc.expectedErr)
// expect no change in erc20 balance
balance, err := suite.Keeper.QueryERC20BalanceOf(suite.Ctx, contractAddress, initiator)
suite.NoError(err)
suite.BigIntsEqual(initialPosition.Amount.BigInt(), balance, "expected no change in initiator's erc20 balance")
// expect no change in module balance
suite.Equal(initialPosition.Amount, suite.ModuleBalance(denom), "expected no change in module balance")
return
}
suite.NoError(err)
receiver := sdk.MustAccAddressFromBech32(tc.msg.Receiver)
// expect receiver to have the sdk coins
sdkBalance := suite.BankKeeper.GetBalance(suite.Ctx, receiver, denom)
suite.Equal(tc.amountConverted, sdkBalance.Amount)
newEvmBalance := initialPosition.SubAmount(tc.amountConverted)
// expect initiator to have the balance deducted
evmBalance, err := suite.Keeper.QueryERC20BalanceOf(suite.Ctx, contractAddress, initiator)
suite.NoError(err)
suite.BigIntsEqual(newEvmBalance.Amount.BigInt(), evmBalance, "unexpected initiator final erc20 balance")
// expect tokens to be deducted from module account
suite.True(newEvmBalance.Amount.Equal(suite.ModuleBalance(denom)), "unexpected module balance")
// expect erc20 total supply to reflect new value
caller, key := testutil.RandomEvmAccount()
totalSupply, err := suite.QueryContract(
types.ERC20ZgChainWrappedCosmosCoinContract.ABI,
caller,
key,
contractAddress,
"totalSupply",
)
suite.NoError(err)
suite.BigIntsEqual(newEvmBalance.Amount.BigInt(), totalSupply[0].(*big.Int), "unexpected total supply")
})
}
}
// the test verifies the behavior for when a denom is removed from the params list
// after conversions have been made:
// - it should prevent more conversions from sdk -> evm for that denom
// - existing erc20s should be allowed to get converted back to a sdk.Coins
// - allowing the denom again should use existing contract
func (suite *MsgServerSuite) TestConvertCosmosCoinForRemovedDenom() {
denom := "magic"
tokenInfo := types.NewAllowedCosmosCoinERC20Token(denom, "MAGIC COIN", "MAGIC", 6)
account := app.RandomAddress()
evmAddr := types.BytesToInternalEVMAddress(account.Bytes())
coin := func(amt int64) sdk.Coin { return sdk.NewInt64Coin(denom, amt) }
// fund account
suite.NoError(suite.App.FundAccount(suite.Ctx, account, sdk.NewCoins(coin(1e10))))
// setup the token as allowed
params := suite.Keeper.GetParams(suite.Ctx)
params.AllowedCosmosDenoms = append(params.AllowedCosmosDenoms, tokenInfo)
suite.Keeper.SetParams(suite.Ctx, params)
// convert some coins while its allowed
msg := types.NewMsgConvertCosmosCoinToERC20(account.String(), evmAddr.Hex(), coin(5e9))
_, err := suite.msgServer.ConvertCosmosCoinToERC20(suite.Ctx, &msg)
suite.NoError(err)
// expect contract registered
contractAddress, isRegistered := suite.Keeper.GetDeployedCosmosCoinContract(suite.Ctx, denom)
suite.True(isRegistered)
suite.False(contractAddress.IsNil())
// unregister contract
params.AllowedCosmosDenoms = []types.AllowedCosmosCoinERC20Token{}
suite.Keeper.SetParams(suite.Ctx, params)
suite.Run("disallows sdk -> evm when removed", func() {
msg := types.NewMsgConvertCosmosCoinToERC20(account.String(), evmAddr.Hex(), coin(5e9))
_, err := suite.msgServer.ConvertCosmosCoinToERC20(suite.Ctx, &msg)
suite.ErrorContains(err, "sdk.Coin not enabled to convert to ERC20 token")
})
suite.Run("allows conversion of existing ERC20s", func() {
msg := types.NewMsgConvertCosmosCoinFromERC20(evmAddr.Hex(), account.String(), coin(5e9))
_, err := suite.msgServer.ConvertCosmosCoinFromERC20(suite.Ctx, &msg)
suite.NoError(err)
// should be fully withdrawn
erc20Bal, err := suite.Keeper.QueryERC20BalanceOf(suite.Ctx, contractAddress, evmAddr)
suite.NoError(err)
suite.BigIntsEqual(big.NewInt(0), erc20Bal, "cosmos coins were not converted back")
sdkBal := suite.BankKeeper.GetBalance(suite.Ctx, account, denom)
suite.Equal(coin(1e10), sdkBal)
})
suite.Run("contract stays registered", func() {
postDisableContractAddress, found := suite.Keeper.GetDeployedCosmosCoinContract(suite.Ctx, denom)
suite.True(found)
suite.Equal(contractAddress, postDisableContractAddress)
})
suite.Run("re-enable uses original contract", func() {
// re-enable contract
params.AllowedCosmosDenoms = append(params.AllowedCosmosDenoms, tokenInfo)
suite.Keeper.SetParams(suite.Ctx, params)
// attempt conversion
msg := types.NewMsgConvertCosmosCoinToERC20(account.String(), evmAddr.Hex(), coin(1e10))
_, err := suite.msgServer.ConvertCosmosCoinToERC20(suite.Ctx, &msg)
suite.NoError(err)
// should have balance on original ERC20 contract
erc20Bal, err := suite.Keeper.QueryERC20BalanceOf(suite.Ctx, contractAddress, evmAddr)
suite.NoError(err)
suite.BigIntsEqual(big.NewInt(1e10), erc20Bal, "cosmos coins were not converted")
sdkBal := suite.BankKeeper.GetBalance(suite.Ctx, account, denom)
suite.True(sdkBal.IsZero())
})
}