0g-chain/x/evmutil/keeper/erc20_test.go
Robert Pirtle 6585ac24b0
feat(evmutil): track deployed contracts in state (#1598)
* feat(evmutil): track deployed contracts in state

* docs(evmutil): update state spec

* update changelog
2023-05-24 16:23:33 -07:00

212 lines
6.3 KiB
Go

package keeper_test
import (
"math/big"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/stretchr/testify/suite"
"github.com/kava-labs/kava/app"
"github.com/kava-labs/kava/x/evmutil/testutil"
"github.com/kava-labs/kava/x/evmutil/types"
)
type ERC20TestSuite struct {
testutil.Suite
contractAddr types.InternalEVMAddress
}
func TestERC20TestSuite(t *testing.T) {
suite.Run(t, new(ERC20TestSuite))
}
func (suite *ERC20TestSuite) SetupTest() {
suite.Suite.SetupTest()
suite.contractAddr = suite.DeployERC20()
}
func (suite *ERC20TestSuite) TestERC20QueryBalanceOf_Empty() {
bal, err := suite.Keeper.QueryERC20BalanceOf(
suite.Ctx,
suite.contractAddr,
suite.Key1Addr,
)
suite.Require().NoError(err)
suite.Require().True(bal.Cmp(big.NewInt(0)) == 0, "balance should be 0")
}
func (suite *ERC20TestSuite) TestERC20QueryBalanceOf_NonEmpty() {
// Mint some tokens for the address
err := suite.Keeper.MintERC20(
suite.Ctx,
suite.contractAddr,
suite.Key1Addr,
big.NewInt(10),
)
suite.Require().NoError(err)
bal, err := suite.Keeper.QueryERC20BalanceOf(
suite.Ctx,
suite.contractAddr,
suite.Key1Addr,
)
suite.Require().NoError(err)
suite.Require().Equal(big.NewInt(10), bal, "balance should be 10")
}
func (suite *ERC20TestSuite) TestERC20Mint() {
contractAddr := suite.DeployERC20()
// We can't test mint by module account like the Unauthorized test as we
// cannot sign as the module account. Instead, we test the keeper method for
// minting.
receiver := common.BytesToAddress(suite.Key2.PubKey().Address())
amount := big.NewInt(1234)
err := suite.App.GetEvmutilKeeper().MintERC20(suite.Ctx, contractAddr, types.NewInternalEVMAddress(receiver), amount)
suite.Require().NoError(err)
// Query ERC20.balanceOf()
addr := common.BytesToAddress(suite.Key1.PubKey().Address())
res, err := suite.QueryContract(
types.ERC20MintableBurnableContract.ABI,
addr,
suite.Key1,
contractAddr,
"balanceOf",
receiver,
)
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")
suite.Require().Equal(big.NewInt(1234), balance)
}
func (suite *ERC20TestSuite) TestDeployKavaWrappedCosmosCoinERC20Contract() {
suite.Run("fails to deploy invalid contract", func() {
// empty other fields means this token is invalid.
invalidToken := types.AllowedCosmosCoinERC20Token{CosmosDenom: "nope"}
_, err := suite.Keeper.DeployKavaWrappedCosmosCoinERC20Contract(suite.Ctx, invalidToken)
suite.ErrorContains(err, "token's name cannot be empty")
})
suite.Run("deploys contract with expected metadata & permissions", func() {
caller, privKey := testutil.RandomEvmAccount()
token := types.NewAllowedCosmosCoinERC20Token("hard", "EVM HARD", "HARD", 6)
addr, err := suite.Keeper.DeployKavaWrappedCosmosCoinERC20Contract(suite.Ctx, token)
suite.NoError(err)
suite.NotNil(addr)
callContract := func(method string, args ...interface{}) ([]interface{}, error) {
return suite.QueryContract(
types.ERC20KavaWrappedCosmosCoinContract.ABI,
caller,
privKey,
addr,
method,
args...,
)
}
// owner must be the evmutil module account
data, err := callContract("owner")
suite.NoError(err)
suite.Len(data, 1)
suite.Equal(types.ModuleEVMAddress, data[0].(common.Address))
// get name
data, err = callContract("name")
suite.NoError(err)
suite.Len(data, 1)
suite.Equal(token.Name, data[0].(string))
// get symbol
data, err = callContract("symbol")
suite.NoError(err)
suite.Len(data, 1)
suite.Equal(token.Symbol, data[0].(string))
// get decimals
data, err = callContract("decimals")
suite.NoError(err)
suite.Len(data, 1)
suite.Equal(token.Decimals, uint32(data[0].(uint8)))
// should not be able to call mint
_, err = callContract("mint", caller, big.NewInt(1))
suite.ErrorContains(err, "Ownable: caller is not the owner")
// should not be able to call burn
_, err = callContract("burn", caller, big.NewInt(1))
suite.ErrorContains(err, "Ownable: caller is not the owner")
})
}
func (suite *ERC20TestSuite) TestGetOrDeployCosmosCoinERC20Contract() {
suite.Run("finds existing contract address", func() {
suite.SetupTest()
denom := "magic"
addr := types.BytesToInternalEVMAddress(app.RandomAddress().Bytes())
// pretend like we've registered a contract in a previous life
err := suite.Keeper.SetDeployedCosmosCoinContract(suite.Ctx, denom, addr)
suite.NoError(err)
// expect it to find the registered address
tokenInfo := types.AllowedCosmosCoinERC20Token{CosmosDenom: denom}
contractAddress, err := suite.Keeper.GetOrDeployCosmosCoinERC20Contract(suite.Ctx, tokenInfo)
suite.NoError(err)
suite.Equal(addr, contractAddress)
// expect it to still be registered
contractAddress, found := suite.Keeper.GetDeployedCosmosCoinContract(suite.Ctx, denom)
suite.True(found)
suite.Equal(addr, contractAddress)
})
suite.Run("deploys & registers contract when one does not exist", func() {
suite.SetupTest()
denom := "magic"
tokenInfo := types.NewAllowedCosmosCoinERC20Token(denom, "Magic Coin", "MAGIC", 6)
// expect it to not be registered
_, found := suite.Keeper.GetDeployedCosmosCoinContract(suite.Ctx, denom)
suite.False(found)
// deploy the contract
contractAddress, err := suite.Keeper.GetOrDeployCosmosCoinERC20Contract(suite.Ctx, tokenInfo)
suite.NoError(err)
// expect it to be registered now
registeredAddress, found := suite.Keeper.GetDeployedCosmosCoinContract(suite.Ctx, denom)
suite.True(found)
suite.False(registeredAddress.IsNil())
suite.Equal(contractAddress, registeredAddress)
})
// this can only happen if governance passes a bad allowed token
suite.Run("fails when token can't be deployed", func() {
suite.SetupTest()
denom := "nope"
// empty other fields means this token is invalid.
invalidToken := types.AllowedCosmosCoinERC20Token{CosmosDenom: denom}
// expect it to not be registered
_, found := suite.Keeper.GetDeployedCosmosCoinContract(suite.Ctx, denom)
suite.False(found)
// attempt to deploy the contract
contractAddress, err := suite.Keeper.GetOrDeployCosmosCoinERC20Contract(suite.Ctx, invalidToken)
suite.ErrorContains(err, "failed to deploy erc20")
suite.True(contractAddress.IsNil())
// still expect it to not be registered
_, found = suite.Keeper.GetDeployedCosmosCoinContract(suite.Ctx, denom)
suite.False(found)
})
}