fix: fix x/tokenfactory genesis import denoms reset x/bank existing denom metadata

CHANGELOG.md

@@ -40,6 +40,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### State Breaking
+
+* [#5532](https://github.com/osmosis-labs/osmosis/pull/5532) fix: Fix x/tokenfactory genesis import denoms reset x/bank existing denom metadata
+
 ## v16.0.0
 Osmosis Labs is excited to announce the release of v16.0.0, a major upgrade that includes a number of new features and improvements like introduction of new modules, updates existing APIs, and dependency updates. This upgrade aims to enhance capital efficiency by introducing SuperCharged Liquidity, introduce custom liquidity pools backed by CosmWasm smart contracts, and improve overall functionality.
 

x/tokenfactory/keeper/createdenom.go

@@ -28,15 +28,18 @@ func (k Keeper) CreateDenom(ctx sdk.Context, creatorAddr string, subdenom string
 // Runs CreateDenom logic after the charge and all denom validation has been handled.
 // Made into a second function for genesis initialization.
 func (k Keeper) createDenomAfterValidation(ctx sdk.Context, creatorAddr string, denom string) (err error) {
-	denomMetaData := banktypes.Metadata{
-		DenomUnits: []*banktypes.DenomUnit{{
-			Denom:    denom,
-			Exponent: 0,
-		}},
-		Base: denom,
-	}
+	_, exists := k.bankKeeper.GetDenomMetaData(ctx, denom)
+	if !exists {
+		denomMetaData := banktypes.Metadata{
+			DenomUnits: []*banktypes.DenomUnit{{
+				Denom:    denom,
+				Exponent: 0,
+			}},
+			Base: denom,
+		}
 
-	k.bankKeeper.SetDenomMetaData(ctx, denomMetaData)
+		k.bankKeeper.SetDenomMetaData(ctx, denomMetaData)
+	}
 
 	authorityMetadata := types.DenomAuthorityMetadata{
 		Admin: creatorAddr,

x/tokenfactory/keeper/createdenom_test.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
+	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
 
 	"github.com/osmosis-labs/osmosis/v16/app/apptesting"
 	"github.com/osmosis-labs/osmosis/v16/x/tokenfactory/types"
@@ -164,6 +165,17 @@ func (s *KeeperTestSuite) TestCreateDenom() {
 
 				s.Require().NoError(err)
 				s.Require().Equal(s.TestAccs[0].String(), queryRes.AuthorityMetadata.Admin)
+
+				// Make sure that the denom metadata is initialized correctly
+				metadata, found := bankKeeper.GetDenomMetaData(s.Ctx, res.GetNewTokenDenom())
+				s.Require().True(found)
+				s.Require().Equal(banktypes.Metadata{
+					DenomUnits: []*banktypes.DenomUnit{{
+						Denom:    res.GetNewTokenDenom(),
+						Exponent: 0,
+					}},
+					Base: res.GetNewTokenDenom(),
+				}, metadata)
 			} else {
 				s.Require().Error(err)
 				// Ensure we don't charge if we expect an error

x/tokenfactory/keeper/genesis_test.go

@@ -38,7 +38,7 @@ func (s *KeeperTestSuite) TestGenesis() {
 	for i, denom := range genesisState.FactoryDenoms {
 		// hacky, sets bank metadata to exist if i != 0, to cover both cases.
 		if i != 0 {
-			app.BankKeeper.SetDenomMetaData(s.Ctx, banktypes.Metadata{Base: denom.GetDenom()})
+			app.BankKeeper.SetDenomMetaData(s.Ctx, banktypes.Metadata{Base: denom.GetDenom(), Display: "test"})
 		}
 	}
 
@@ -56,4 +56,15 @@ func (s *KeeperTestSuite) TestGenesis() {
 	exportedGenesis := app.TokenFactoryKeeper.ExportGenesis(s.Ctx)
 	s.Require().NotNil(exportedGenesis)
 	s.Require().Equal(genesisState, *exportedGenesis)
+
+	app.BankKeeper.SetParams(s.Ctx, banktypes.DefaultParams())
+	app.BankKeeper.InitGenesis(s.Ctx, app.BankKeeper.ExportGenesis(s.Ctx))
+	for i, denom := range genesisState.FactoryDenoms {
+		// hacky, check whether bank metadata is not replaced if i != 0, to cover both cases.
+		if i != 0 {
+			metadata, found := app.BankKeeper.GetDenomMetaData(s.Ctx, denom.GetDenom())
+			s.Require().True(found)
+			s.Require().Equal(metadata, banktypes.Metadata{Base: denom.GetDenom(), Display: "test"})
+		}
+	}
 }