feat(evm): add simple validation for fun token fee in set params

CHANGELOG.md

@@ -108,7 +108,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [#2002](https://github.com/NibiruChain/nibiru/pull/2002) - feat(evm): Add the account query to the EVM command. Cover the CLI with tests.
 - [#2003](https://github.com/NibiruChain/nibiru/pull/2003) - fix(evm): fix FunToken conversions between Cosmos and EVM
 - [#2004](https://github.com/NibiruChain/nibiru/pull/2004) - refactor(evm)!: replace `HexAddr` with `EIP55Addr`
-- [#2006](https://github.com/NibiruChain/nibiru/pull/2006) - test(evm): e2e tests for eth_* endpoints
+- [#2006](https://github.com/NibiruChain/nibiru/pull/2006) - test(evm): e2e tests for eth\_\* endpoints
 - [#2008](https://github.com/NibiruChain/nibiru/pull/2008) - refactor(evm): clean up precompile setups
 - [#2013](https://github.com/NibiruChain/nibiru/pull/2013) - chore(evm): Set appropriate gas value for the required gas of the "IFunToken.sol" precompile.
 - [#2014](https://github.com/NibiruChain/nibiru/pull/2014) - feat(evm): Emit block bloom event in EndBlock hook.
@@ -124,19 +124,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [#2044](https://github.com/NibiruChain/nibiru/pull/2044) - feat(evm): evm tx indexer service implemented
 - [#2045](https://github.com/NibiruChain/nibiru/pull/2045) - test(evm): backend tests with test network and real txs
 - [#2053](https://github.com/NibiruChain/nibiru/pull/2053) - refactor(evm): converted untyped event to typed and cleaned up
-- [#2054](https://github.com/NibiruChain/nibiru/pull/2054) - feat(evm-precompile): Precompile for one-way EVM calls to invoke/execute Wasm contracts. 
+- [#2054](https://github.com/NibiruChain/nibiru/pull/2054) - feat(evm-precompile): Precompile for one-way EVM calls to invoke/execute Wasm contracts.
 - [#2060](https://github.com/NibiruChain/nibiru/pull/2060) - fix(evm-precompiles): add assertNumArgs validation
 - [#2056](https://github.com/NibiruChain/nibiru/pull/2056) - feat(evm): add oracle precompile
 - [#2065](https://github.com/NibiruChain/nibiru/pull/2065) - refactor(evm)!: Refactor out dead code from the evm.Params
 - [#2073](https://github.com/NibiruChain/nibiru/pull/2073) - fix(evm-keeper): better utilize ERC20 metadata during FunToken creation
 - [#2076](https://github.com/NibiruChain/nibiru/pull/2076) - fix(evm-gas-fees):
-Use effective gas price in RefundGas and make sure that units are properly
-reflected on all occurences of "base fee" in the codebase. This fixes [#2059](https://github.com/NibiruChain/nibiru/issues/2059)
-and the [related comments from @Unique-Divine and @berndartmueller](https://github.com/NibiruChain/nibiru/issues/2059#issuecomment-2408625724).
+  Use effective gas price in RefundGas and make sure that units are properly
+  reflected on all occurences of "base fee" in the codebase. This fixes [#2059](https://github.com/NibiruChain/nibiru/issues/2059)
+  and the [related comments from @Unique-Divine and @berndartmueller](https://github.com/NibiruChain/nibiru/issues/2059#issuecomment-2408625724).
 - [#2084](https://github.com/NibiruChain/nibiru/pull/2084) - feat(evm-forge): foundry support and template for Nibiru EVM develoment
 - [#2088](https://github.com/NibiruChain/nibiru/pull/2088) - refactor(evm): remove outdated comment and improper error message text
 - [#2089](https://github.com/NibiruChain/nibiru/pull/2089) - better handling of gas consumption within erc20 contract execution
-
+- [#2091](https://github.com/NibiruChain/nibiru/pull/2091) - feat(evm): add fun token creation fee validation
 
 #### Dapp modules: perp, spot, oracle, etc
 

app/evmante/evmante_validate_basic_test.go

@@ -36,6 +36,18 @@ func (s *TestSuite) TestEthValidateBasicDecorator() {
 			},
 			wantErr: "",
 		},
+		{
+			name: "sad: fail to set params",
+			txSetup: func(deps *evmtest.TestDeps) sdk.Tx {
+				return evmtest.HappyCreateContractTx(deps)
+			},
+			paramsSetup: func(deps *evmtest.TestDeps) evm.Params {
+				return evm.Params{
+					CreateFuntokenFee: sdk.NewInt(-1),
+				}
+			},
+			wantErr: "createFuntokenFee cannot be negative: -1",
+		},
 		{
 			name: "happy: ctx recheck should ignore validation",
 			ctxSetup: func(deps *evmtest.TestDeps) {
@@ -195,12 +207,16 @@ func (s *TestSuite) TestEthValidateBasicDecorator() {
 			if tc.ctxSetup != nil {
 				tc.ctxSetup(&deps)
 			}
+			var err error
 			if tc.paramsSetup != nil {
-				deps.EvmKeeper.SetParams(deps.Ctx, tc.paramsSetup(&deps))
+				err = deps.EvmKeeper.SetParams(deps.Ctx, tc.paramsSetup(&deps))
+			}
+
+			if err == nil {
+				_, err = anteDec.AnteHandle(
+					deps.Ctx, tx, false, evmtest.NextNoOpAnteHandler,
+				)
 			}
-			_, err := anteDec.AnteHandle(
-				deps.Ctx, tx, false, evmtest.NextNoOpAnteHandler,
-			)
 			if tc.wantErr != "" {
 				s.Require().ErrorContains(err, tc.wantErr)
 				return

x/evm/keeper/evm_state.go

@@ -2,6 +2,7 @@
 package keeper
 
 import (
+	"fmt"
 	"math/big"
 
 	"github.com/NibiruChain/collections"
@@ -116,8 +117,13 @@
 }
 
 // SetParams: Setter for the module parameters.
-func (k Keeper) SetParams(ctx sdk.Context, params evm.Params) {
+func (k Keeper) SetParams(ctx sdk.Context, params evm.Params) (err error) {
+	if params.CreateFuntokenFee.IsNegative() {
+		return fmt.Errorf("createFuntokenFee cannot be negative: %s", params.CreateFuntokenFee)
+	}
+
 	k.EvmState.ModuleParams.Set(ctx, params)
+	return
 }
 
 // SetState updates contract storage and deletes if the value is empty.

x/evm/keeper/msg_update_params.go

@@ -18,6 +18,9 @@
 		return nil, errors.Wrapf(govtypes.ErrInvalidSigner, "invalid authority, expected %s, got %s", k.authority.String(), req.Authority)
 	}
 	ctx := sdk.UnwrapSDKContext(goCtx)
-	k.SetParams(ctx, req.Params)
+	err = k.SetParams(ctx, req.Params)
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to set params")
+	}
 	return &evm.MsgUpdateParamsResponse{}, nil
 }