From cdddb334c53da91105059801fe232b90206dd42f Mon Sep 17 00:00:00 2001
From: beer-1 <147697694+beer-1@users.noreply.github.com>
Date: Mon, 6 Nov 2023 12:23:24 +0900
Subject: [PATCH] reverse dex price calculation

---
 x/move/ante/fee_test.go        | 5 +++--
 x/move/types/connector.go      | 4 ++--
 x/move/types/connector_test.go | 5 +++--
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/x/move/ante/fee_test.go b/x/move/ante/fee_test.go
index e503b1e6..59d8d858 100644
--- a/x/move/ante/fee_test.go
+++ b/x/move/ante/fee_test.go
@@ -105,7 +105,8 @@ func (suite *AnteTestSuite) TestEnsureMempoolFees() {
 	suite.Require().NoError(err)
 
 	// Set high gas price so standard test fee fails
-	basePrice := sdk.NewDecCoinFromDec(baseDenom, sdk.NewDec(200).Quo(sdk.NewDec(100000)))
+	// gas price = 0.004
+	basePrice := sdk.NewDecCoinFromDec(baseDenom, sdk.NewDecWithPrec(4, 3))
 	highGasPrice := []sdk.DecCoin{basePrice}
 	suite.ctx = suite.ctx.WithMinGasPrices(highGasPrice)
 
@@ -142,7 +143,7 @@ func (suite *AnteTestSuite) TestEnsureMempoolFees() {
 		pools:           dexPools,
 		weights:         dexWeights,
 		baseDenom:       baseDenom,
-		baseMinGasPrice: sdk.NewDec(200).Quo(sdk.NewDec(100000)),
+		baseMinGasPrice: sdk.NewDecWithPrec(4, 3),
 	})
 
 	_, _, err = fc.CheckTxFeeWithMinGasPrices(suite.ctx, tx)
diff --git a/x/move/types/connector.go b/x/move/types/connector.go
index 2ef74016..91d8c377 100644
--- a/x/move/types/connector.go
+++ b/x/move/types/connector.go
@@ -409,8 +409,8 @@ func GetPoolSpotPrice(
 	balanceBase, balanceQuote math.Int,
 	weightBase, weightQuote sdk.Dec,
 ) sdk.Dec {
-	numerator := weightBase.MulInt(balanceQuote)
-	denominator := weightQuote.MulInt(balanceBase)
+	numerator := weightQuote.MulInt(balanceBase)
+	denominator := weightBase.MulInt(balanceQuote)
 
 	return numerator.Quo(denominator)
 }
diff --git a/x/move/types/connector_test.go b/x/move/types/connector_test.go
index 8951e523..9ea0a739 100644
--- a/x/move/types/connector_test.go
+++ b/x/move/types/connector_test.go
@@ -4,6 +4,7 @@ import (
 	"strings"
 	"testing"
 
+	"cosmossdk.io/math"
 	"github.com/stretchr/testify/require"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -30,12 +31,12 @@ func Test_GetDexWeight(t *testing.T) {
 func Test_GetPoolSpotPrice(t *testing.T) {
 	price := types.GetPoolSpotPrice(
 		sdk.NewInt(1_000_000),
-		sdk.NewInt(4_000_000),
+		sdk.NewInt(8_000_000),
 		sdk.NewDecWithPrec(2, 1),
 		sdk.NewDecWithPrec(8, 1),
 	)
 
-	require.Equal(t, sdk.OneDec(), price)
+	require.Equal(t, math.LegacyNewDecWithPrec(5, 1), price)
 }
 
 func Test_DeserializeUint128(t *testing.T) {