From f8619ff632c03746bb1b8b92938356fd80a65770 Mon Sep 17 00:00:00 2001
From: mattverse <mattpark1028@gmail.com>
Date: Tue, 1 Aug 2023 16:07:11 +0900
Subject: [PATCH] Try changing to use child ctx

---
 x/tokenfactory/keeper/before_send.go      | 21 ++++++++++++++-------
 x/tokenfactory/keeper/before_send_test.go | 23 ++++++++++++++++-------
 2 files changed, 30 insertions(+), 14 deletions(-)

diff --git a/x/tokenfactory/keeper/before_send.go b/x/tokenfactory/keeper/before_send.go
index 21b0639a4f5..bfe4d36e8b2 100644
--- a/x/tokenfactory/keeper/before_send.go
+++ b/x/tokenfactory/keeper/before_send.go
@@ -131,16 +131,23 @@ func (k Keeper) callBeforeSendListener(ctx sdk.Context, from, to sdk.AccAddress,
 			if err != nil {
 				return err
 			}
+			em := sdk.NewEventManager()
 
 			// if its track before send, apply gas meter to prevent infinite loop
-			if !blockBeforeSend {
-				ctx = ctx.WithGasMeter(sdk.NewGasMeter(types.TrackBeforeSendGasLimit))
-			}
+			if blockBeforeSend {
+				_, err = k.contractKeeper.Sudo(ctx.WithEventManager(em), cwAddr, msgBz)
+				if err != nil {
+					return errorsmod.Wrapf(err, "failed to call before send hook for denom %s", coin.Denom)
+				}
+			} else {
+				childCtx := ctx.WithGasMeter(sdk.NewGasMeter(types.TrackBeforeSendGasLimit))
+				_, err = k.contractKeeper.Sudo(childCtx.WithEventManager(em), cwAddr, msgBz)
+				if err != nil {
+					return errorsmod.Wrapf(err, "failed to call before send hook for denom %s", coin.Denom)
+				}
 
-			em := sdk.NewEventManager()
-			_, err = k.contractKeeper.Sudo(ctx.WithEventManager(em), cwAddr, msgBz)
-			if err != nil {
-				return errorsmod.Wrapf(err, "failed to call before send hook for denom %s", coin.Denom)
+				// consume gas used for calling contract to the parent ctx
+				ctx.GasMeter().ConsumeGas(childCtx.GasMeter().GasConsumed(), "track before send gas")
 			}
 		}
 	}
diff --git a/x/tokenfactory/keeper/before_send_test.go b/x/tokenfactory/keeper/before_send_test.go
index cd43204280a..c4ff10756e9 100644
--- a/x/tokenfactory/keeper/before_send_test.go
+++ b/x/tokenfactory/keeper/before_send_test.go
@@ -130,29 +130,38 @@ func (s *KeeperTestSuite) TestBeforeSendHook() {
 func (s *KeeperTestSuite) TestInfiniteTrackBeforeSend() {
 	s.SkipIfWSL()
 
-	// load wasm file
-	wasmFile := "./testdata/infinite_track_beforesend.wasm"
-	wasmCode, err := os.ReadFile(wasmFile)
-	s.Require().NoError(err)
-
 	for _, tc := range []struct {
 		name            string
+		wasmFile        string
+		tokenToSend     sdk.Coins
 		useFactoryDenom bool
 		expectedError   bool
 	}{
 		{
 			name:            "sending tokenfactory denom from module to module with infinite contract should panic",
+			wasmFile:        "./testdata/infinite_track_beforesend.wasm",
 			useFactoryDenom: true,
 		},
 		{
 			name:            "sending non-tokenfactory denom from module to module with infinite contract should not panic",
+			wasmFile:        "./testdata/infinite_track_beforesend.wasm",
+			tokenToSend:     sdk.NewCoins(sdk.NewInt64Coin("foo", 1000000)),
 			useFactoryDenom: false,
 		},
+		{
+			name:            "Try using no 100 ",
+			wasmFile:        "./testdata/no100.wasm",
+			useFactoryDenom: true,
+		},
 	} {
 		s.Run(fmt.Sprintf("Case %s", tc.name), func() {
 			// setup test
 			s.SetupTest()
 
+			// load wasm file
+			wasmCode, err := os.ReadFile(tc.wasmFile)
+			s.Require().NoError(err)
+
 			// instantiate wasm code
 			codeID, _, err := s.contractKeeper.Create(s.Ctx, s.TestAccs[0], wasmCode, nil)
 			s.Require().NoError(err, "test: %v", tc.name)
@@ -166,9 +175,9 @@ func (s *KeeperTestSuite) TestInfiniteTrackBeforeSend() {
 
 			var tokenToSend sdk.Coins
 			if tc.useFactoryDenom {
-				tokenToSend = sdk.NewCoins(sdk.NewInt64Coin(factoryDenom, 1000000))
+				tokenToSend = sdk.NewCoins(sdk.NewInt64Coin(factoryDenom, 100))
 			} else {
-				tokenToSend = sdk.NewCoins(sdk.NewInt64Coin("foo", 1000000))
+				tokenToSend = tc.tokenToSend
 			}
 
 			// send the mint module tokenToSend