test(evm): unit tests for evm_ante

CHANGELOG.md

@@ -67,6 +67,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [#1895](https://github.com/NibiruChain/nibiru/pull/1895) - refactor(geth): Reference go-ethereum as a submodule for easier change tracking with upstream
 - [#1901](https://github.com/NibiruChain/nibiru/pull/1901) - test(evm): more e2e test contracts for edge cases
 - [#1909](https://github.com/NibiruChain/nibiru/pull/1909) - chore(evm): set is_london true by default and removed from config
+- [#1912](https://github.com/NibiruChain/nibiru/pull/1912) - test(evm): unit tests for evm_ante_sigverify
 
 #### Dapp modules: perp, spot, oracle, etc
 

app/evmante_sigverify.go

@@ -42,15 +42,20 @@ func (esvd EthSigVerificationDecorator) AnteHandle(
 	for _, msg := range tx.GetMsgs() {
 		msgEthTx, ok := msg.(*evm.MsgEthereumTx)
 		if !ok {
-			return ctx, errors.Wrapf(errortypes.ErrUnknownRequest, "invalid message type %T, expected %T", msg, (*evm.MsgEthereumTx)(nil))
+			return ctx, errors.Wrapf(
+				errortypes.ErrUnknownRequest,
+				"invalid message type %T, expected %T", msg, (*evm.MsgEthereumTx)(nil),
+			)
 		}
 
 		allowUnprotectedTxs := evmParams.GetAllowUnprotectedTxs()
 		ethTx := msgEthTx.AsTransaction()
 		if !allowUnprotectedTxs && !ethTx.Protected() {
 			return ctx, errors.Wrapf(
 				errortypes.ErrNotSupported,
-				"rejected unprotected Ethereum transaction. Please EIP155 sign your transaction to protect it against replay-attacks")
+				"rejected unprotected Ethereum transaction. "+
+					"Please EIP155 sign your transaction to protect it against replay-attacks",
+			)
 		}
 
 		sender, err := signer.Sender(ethTx)

app/evmante_sigverify_test.go

@@ -0,0 +1,88 @@
+package app_test
+
+import (
+	"math/big"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/x/auth/migrations/legacytx"
+
+	"github.com/NibiruChain/nibiru/app"
+	"github.com/NibiruChain/nibiru/x/evm/evmtest"
+	tf "github.com/NibiruChain/nibiru/x/tokenfactory/types"
+)
+
+var InvalidChainID = big.NewInt(987654321)
+var RandomAddress = evmtest.NewEthAccInfo().EthAddr.Hex()
+
+func (s *TestSuite) TestEthSigVerificationDecorator() {
+	testCases := []struct {
+		name    string
+		txSetup func(deps *evmtest.TestDeps) sdk.Tx
+		wantErr string
+	}{
+		{
+			name: "sad: unsigned tx",
+			txSetup: func(deps *evmtest.TestDeps) sdk.Tx {
+				tx := happyCreateContractTx(deps)
+				return tx
+			},
+			wantErr: "rejected unprotected Ethereum transaction",
+		},
+		{
+			name: "sad: non ethereum tx",
+			txSetup: func(deps *evmtest.TestDeps) sdk.Tx {
+				return legacytx.StdTx{
+					Msgs: []sdk.Msg{
+						&tf.MsgMint{},
+					},
+				}
+			},
+			wantErr: "invalid message",
+		},
+		{
+			name: "sad: ethereum tx invalid chain id",
+			txSetup: func(deps *evmtest.TestDeps) sdk.Tx {
+				tx := happyCreateContractTx(deps)
+				gethSigner := deps.Sender.GethSigner(InvalidChainID)
+				keyringSigner := deps.Sender.KeyringSigner
+				err := tx.Sign(gethSigner, keyringSigner)
+				s.Require().NoError(err)
+				return tx
+			},
+			wantErr: "invalid chain id for signer",
+		},
+		{
+			name: "happy: signed ethereum tx",
+			txSetup: func(deps *evmtest.TestDeps) sdk.Tx {
+				tx := happyCreateContractTx(deps)
+				gethSigner := deps.Sender.GethSigner(deps.Chain.EvmKeeper.EthChainID(deps.Ctx))
+				keyringSigner := deps.Sender.KeyringSigner
+				err := tx.Sign(gethSigner, keyringSigner)
+				s.Require().NoError(err)
+				return tx
+			},
+			wantErr: "",
+		},
+	}
+
+	for _, tc := range testCases {
+		s.Run(tc.name, func() {
+			deps := evmtest.NewTestDeps()
+			stateDB := deps.StateDB()
+			anteDec := app.NewEthSigVerificationDecorator(deps.Chain.AppKeepers)
+
+			tx := tc.txSetup(&deps)
+			s.Require().NoError(stateDB.Commit())
+
+			deps.Ctx = deps.Ctx.WithIsCheckTx(true)
+			_, err := anteDec.AnteHandle(
+				deps.Ctx, tx, false, NextNoOpAnteHandler,
+			)
+			if tc.wantErr != "" {
+				s.Require().ErrorContains(err, tc.wantErr)
+				return
+			}
+			s.Require().NoError(err)
+		})
+	}
+}