test(evm): test for creating fun token from coin

CHANGELOG.md

@@ -77,6 +77,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [#1917](https://github.com/NibiruChain/nibiru/pull/1917) - test(e2e-evm): TypeScript support. Type generation from compiled contracts. Formatter for TS code.
 - [#1922](https://github.com/NibiruChain/nibiru/pull/1922) - feat(evm): tracer option is read from the config.
 - [#1936](https://github.com/NibiruChain/nibiru/pull/1936) - feat(evm): EVM fungible token protobufs and encoding tests
+- [#1946](https://github.com/NibiruChain/nibiru/pull/1946) - feat(evm): tx for creating fun token from coin
 
 #### Dapp modules: perp, spot, oracle, etc
 

proto/eth/evm/v1/events.proto

@@ -47,4 +47,5 @@ message EventBlockBloom {
 message EventCreateFunTokenFromCoin {
   string denom = 1;
   string contract_address = 2;
+  string creator = 3;
 }

proto/eth/evm/v1/tx.proto

@@ -181,12 +181,7 @@ message MsgUpdateParams {
 message MsgUpdateParamsResponse {}
 
 
-// MsgCreateFunTokenFromCoin: sdk.Msg that registers cosmos denom as an evm erc-20 contract.
-// A denom has the form "tf/[creatorAddr]/[subdenom]".
-//  - Denoms become unique x/bank tokens, so the creator-subdenom pair that
-//    defines a denom cannot be reused.
-//  - The resulting denom's admin is originally set to be the creator, but the
-//    admin can be changed later.
+// MsgCreateFunTokenFromCoin: sdk.Msg that registers cosmos denom as an evm erc-20 contract
 message MsgCreateFunTokenFromCoin {
   string sender = 1 [ (gogoproto.moretags) = "yaml:\"sender\"" ];
   // cosmos denom. Ex: ibc/abc123def

x/evm/keeper/msg_fun_token.go

@@ -29,6 +29,7 @@ func (k *Keeper) CreateFunTokenFromCoin(
 	}
 
 	_ = ctx.EventManager().EmitTypedEvent(&evm.EventCreateFunTokenFromCoin{
+		Creator:         msg.Sender,
 		Denom:           msg.Denom,
 		ContractAddress: newContractAddress.String(),
 	})

x/evm/keeper/msg_fun_token_test.go

@@ -0,0 +1,62 @@
+package keeper_test
+
+import (
+	testutilevents "github.com/NibiruChain/nibiru/x/common/testutil"
+	"github.com/NibiruChain/nibiru/x/evm"
+	"github.com/NibiruChain/nibiru/x/evm/evmtest"
+)
+
+func (s *KeeperSuite) TestMsgCreateFunTokenFromCoin() {
+	testCases := []struct {
+		name    string
+		denom   string
+		sender  string
+		wantErr string
+	}{
+		{
+			name:    "happy: proper coin name",
+			denom:   "tf/creator/usdt",
+			sender:  "nibi1zaavvzxez0elundtn32qnk9lkm8kmcsz44g7xl",
+			wantErr: "",
+		},
+		{
+			name:    "sad: empty coin name",
+			denom:   "",
+			sender:  "nibi1zaavvzxez0elundtn32qnk9lkm8kmcsz44g7xl",
+			wantErr: "invalid denom",
+		},
+		{
+			name:    "sad: invalid sender",
+			denom:   "tf/creator/usdt",
+			sender:  "12345",
+			wantErr: "invalid sender",
+		},
+	}
+
+	for _, tc := range testCases {
+		s.Run(tc.name, func() {
+			deps := evmtest.NewTestDeps()
+			resp, err := deps.Chain.EvmKeeper.CreateFunTokenFromCoin(
+				deps.GoCtx(), &evm.MsgCreateFunTokenFromCoin{
+					Denom:  tc.denom,
+					Sender: tc.sender,
+				},
+			)
+			if tc.wantErr != "" {
+				s.Require().ErrorContains(err, tc.wantErr)
+				return
+			}
+			s.Assert().NoError(err)
+			s.Require().NotNil(resp)
+			testutilevents.RequireContainsTypedEvent(
+				s.T(),
+				deps.Ctx,
+				&evm.EventCreateFunTokenFromCoin{
+					Creator:         tc.sender,
+					Denom:           tc.denom,
+					ContractAddress: resp.NewContractAddress,
+				},
+			)
+		})
+	}
+}

x/evm/msg.go

@@ -475,6 +475,10 @@ func BinSearch(
 }
 
 func (msg *MsgCreateFunTokenFromCoin) ValidateBasic() error {
+	_, err := sdk.AccAddressFromBech32(msg.Sender)
+	if err != nil {
+		return fmt.Errorf("invalid sender: %s", msg.Sender)
+	}
 	if err := sdk.ValidateDenom(msg.Denom); err != nil {
 		return errValidateFunToken(err.Error())
 	}