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Hard Audit: decrement total borrowed on liquidation (#823)

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* decrement total borrow on liquidation

* copy kevin's decrement changes

* check error in liquidation

* extend decrement borrowed changes

* mimic negative check on the supplied coins side

* update liquidation test
This commit is contained in:
Denali Marsh 2021-02-12 21:07:32 +01:00 committed by GitHub
parent 7e39c1d0a8
commit a5b72363d0
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 144 additions and 110 deletions
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12
x/hard/keeper/borrow.go
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@ -240,9 +240,15 @@ func (k Keeper) DecrementBorrowedCoins(ctx sdk.Context, coins sdk.Coins) error {
return sdkerrors.Wrapf(types.ErrBorrowedCoinsNotFound, "cannot repay coins if no coins are currently borrowed") return sdkerrors.Wrapf(types.ErrBorrowedCoinsNotFound, "cannot repay coins if no coins are currently borrowed")
} }
updatedBorrowedCoins, isAnyNegative := borrowedCoins.SafeSub(coins) updatedBorrowedCoins := sdk.NewCoins()
if isAnyNegative { for _, coin := range coins {
return types.ErrNegativeBorrowedCoins // If amount is greater than total borrowed amount due to rounding, set total borrowed amount to 0
// by skipping the coin such that it's not included in the updatedBorrowedCoins object
if coin.Amount.GTE(borrowedCoins.AmountOf(coin.Denom)) {
continue
}
updatedBorrowCoin := sdk.NewCoin(coin.Denom, borrowedCoins.AmountOf(coin.Denom).Sub(coin.Amount))
updatedBorrowedCoins = updatedBorrowedCoins.Add(updatedBorrowCoin)
} }
k.SetBorrowedCoins(ctx, updatedBorrowedCoins) k.SetBorrowedCoins(ctx, updatedBorrowedCoins)

12
x/hard/keeper/deposit.go
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@ -145,9 +145,15 @@ func (k Keeper) DecrementSuppliedCoins(ctx sdk.Context, coins sdk.Coins) error {
return sdkerrors.Wrapf(types.ErrSuppliedCoinsNotFound, "cannot withdraw if no coins are deposited") return sdkerrors.Wrapf(types.ErrSuppliedCoinsNotFound, "cannot withdraw if no coins are deposited")
} }
updatedSuppliedCoins, isAnyNegative := suppliedCoins.SafeSub(coins) updatedSuppliedCoins := sdk.NewCoins()
if isAnyNegative { for _, coin := range coins {
return types.ErrNegativeSuppliedCoins // If amount is greater than total supplied amount due to rounding, set total supplied amount to 0
// by skipping the coin such that it's not included in the updatedSuppliedCoins object
if coin.Amount.GTE(suppliedCoins.AmountOf(coin.Denom)) {
continue
}
updatedSupplyCoin := sdk.NewCoin(coin.Denom, suppliedCoins.AmountOf(coin.Denom).Sub(coin.Amount))
updatedSuppliedCoins = updatedSuppliedCoins.Add(updatedSupplyCoin)
} }
k.SetSuppliedCoins(ctx, updatedSuppliedCoins) k.SetSuppliedCoins(ctx, updatedSuppliedCoins)

24
x/hard/keeper/liquidation.go
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@ -180,9 +180,15 @@ func (k Keeper) StartAuctions(ctx sdk.Context, borrower sdk.AccAddress, borrows,
if err != nil { if err != nil {
return liquidatedCoins, err return liquidatedCoins, err
} }
// Decrement supplied coins and increment borrowed coins optimistically // Decrement supplied coins and decrement borrowed coins optimistically
k.DecrementSuppliedCoins(ctx, sdk.Coins{lot}) err = k.DecrementSuppliedCoins(ctx, sdk.Coins{lot})
k.IncrementBorrowedCoins(ctx, sdk.Coins{bid}) if err != nil {
return liquidatedCoins, err
}
err = k.DecrementBorrowedCoins(ctx, sdk.Coins{bid})
if err != nil {
return liquidatedCoins, err
}
// Add lot to liquidated coins // Add lot to liquidated coins
liquidatedCoins = liquidatedCoins.Add(lot) liquidatedCoins = liquidatedCoins.Add(lot)
@ -225,9 +231,15 @@ func (k Keeper) StartAuctions(ctx sdk.Context, borrower sdk.AccAddress, borrows,
if err != nil { if err != nil {
return liquidatedCoins, err return liquidatedCoins, err
} }
// Decrement supplied coins and increment borrowed coins optimistically // Decrement supplied coins and decrement borrowed coins optimistically
k.DecrementSuppliedCoins(ctx, sdk.Coins{lot}) err = k.DecrementSuppliedCoins(ctx, sdk.Coins{lot})
k.IncrementBorrowedCoins(ctx, sdk.Coins{bid}) if err != nil {
return liquidatedCoins, err
}
err = k.DecrementBorrowedCoins(ctx, sdk.Coins{bid})
if err != nil {
return liquidatedCoins, err
}
// Add lot to liquidated coins // Add lot to liquidated coins
liquidatedCoins = liquidatedCoins.Add(lot) liquidatedCoins = liquidatedCoins.Add(lot)

195
x/hard/keeper/liquidation_test.go
View File

@ -18,20 +18,20 @@ import (
func (suite *KeeperTestSuite) TestKeeperLiquidation() { func (suite *KeeperTestSuite) TestKeeperLiquidation() {
type args struct { type args struct {
borrower sdk.AccAddress borrower sdk.AccAddress
keeper sdk.AccAddress keeper sdk.AccAddress
keeperRewardPercent sdk.Dec keeperRewardPercent sdk.Dec
initialModuleCoins sdk.Coins initialModuleCoins sdk.Coins
initialBorrowerCoins sdk.Coins initialBorrowerCoins sdk.Coins
initialKeeperCoins sdk.Coins initialKeeperCoins sdk.Coins
depositCoins []sdk.Coin depositCoins []sdk.Coin
borrowCoins sdk.Coins borrowCoins sdk.Coins
liquidateAfter int64 liquidateAfter int64
expectedLiquidatedCoins sdk.Coins expectedTotalSuppliedCoins sdk.Coins
expectedBidCoins sdk.Coins expectedTotalBorrowedCoins sdk.Coins
expectedKeeperCoins sdk.Coins // coins keeper address should have after successfully liquidating position expectedKeeperCoins sdk.Coins // coins keeper address should have after successfully liquidating position
expectedBorrowerCoins sdk.Coins // additional coins (if any) the borrower address should have after successfully liquidating position expectedBorrowerCoins sdk.Coins // additional coins (if any) the borrower address should have after successfully liquidating position
expectedAuctions auctypes.Auctions // the auctions we should expect to find have been started expectedAuctions auctypes.Auctions // the auctions we should expect to find have been started
} }
type errArgs struct { type errArgs struct {
@ -63,19 +63,19 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
{ {
"valid: keeper liquidates borrow", "valid: keeper liquidates borrow",
args{ args{
borrower: borrower, borrower: borrower,
keeper: keeper, keeper: keeper,
keeperRewardPercent: sdk.MustNewDecFromStr("0.05"), keeperRewardPercent: sdk.MustNewDecFromStr("0.05"),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))), initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))), initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
initialKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))), initialKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(10*KAVA_CF))), depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(10*KAVA_CF))),
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(8*KAVA_CF))), borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(8*KAVA_CF))),
liquidateAfter: oneMonthInSeconds, liquidateAfter: oneMonthInSeconds,
expectedLiquidatedCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 9500390)), expectedTotalSuppliedCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 504138)),
expectedBidCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 8004766)), expectedTotalBorrowedCoins: nil,
expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100500020))), expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100500020))),
expectedBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(98000001))), // initial - deposit + borrow + liquidation leftovers expectedBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(98000001))), // initial - deposit + borrow + liquidation leftovers
expectedAuctions: auctypes.Auctions{ expectedAuctions: auctypes.Auctions{
auctypes.CollateralAuction{ auctypes.CollateralAuction{
BaseAuction: auctypes.BaseAuction{ BaseAuction: auctypes.BaseAuction{
@ -102,19 +102,19 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
{ {
"valid: single deposit, multiple borrows", "valid: single deposit, multiple borrows",
args{ args{
borrower: borrower, borrower: borrower,
keeper: keeper, keeper: keeper,
keeperRewardPercent: sdk.MustNewDecFromStr("0.05"), keeperRewardPercent: sdk.MustNewDecFromStr("0.05"),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(1000*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(1000*BTCB_CF))), initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(1000*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(1000*BTCB_CF))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))), initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
initialKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))), initialKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF))), // $100 * 0.8 = $80 borrowable depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF))), // $100 * 0.8 = $80 borrowable
borrowCoins: sdk.NewCoins(sdk.NewCoin("usdc", sdk.NewInt(20*KAVA_CF)), sdk.NewCoin("ukava", sdk.NewInt(10*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(2*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(0.2*BTCB_CF))), // $20+$20+$20 = $80 borrowed borrowCoins: sdk.NewCoins(sdk.NewCoin("usdc", sdk.NewInt(20*KAVA_CF)), sdk.NewCoin("ukava", sdk.NewInt(10*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(2*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(0.2*BTCB_CF))), // $20+$20+$20 = $80 borrowed
liquidateAfter: oneMonthInSeconds, liquidateAfter: oneMonthInSeconds,
expectedLiquidatedCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 47500032)), expectedTotalSuppliedCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 2500711)),
expectedBidCoins: sdk.NewCoins(sdk.NewInt64Coin("bnb", 200003287), sdk.NewInt64Coin("btc", 20000032), sdk.NewInt64Coin("ukava", 10000782), sdk.NewInt64Coin("usdc", 20003284)), expectedTotalBorrowedCoins: nil,
expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(102500001))), expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(102500001))),
expectedBorrowerCoins: sdk.NewCoins(sdk.NewCoin("usdc", sdk.NewInt(20*KAVA_CF)), sdk.NewCoin("ukava", sdk.NewInt(60000002)), sdk.NewCoin("bnb", sdk.NewInt(2*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(0.2*BTCB_CF))), // initial - deposit + borrow + liquidation leftovers expectedBorrowerCoins: sdk.NewCoins(sdk.NewCoin("usdc", sdk.NewInt(20*KAVA_CF)), sdk.NewCoin("ukava", sdk.NewInt(60000002)), sdk.NewCoin("bnb", sdk.NewInt(2*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(0.2*BTCB_CF))), // initial - deposit + borrow + liquidation leftovers
expectedAuctions: auctypes.Auctions{ expectedAuctions: auctypes.Auctions{
auctypes.CollateralAuction{ auctypes.CollateralAuction{
BaseAuction: auctypes.BaseAuction{ BaseAuction: auctypes.BaseAuction{
@ -186,19 +186,19 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
{ {
"valid: multiple deposits, single borrow", "valid: multiple deposits, single borrow",
args{ args{
borrower: borrower, borrower: borrower,
keeper: keeper, keeper: keeper,
keeperRewardPercent: sdk.MustNewDecFromStr("0.05"), keeperRewardPercent: sdk.MustNewDecFromStr("0.05"),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1000*KAVA_CF))), initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1000*KAVA_CF))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(100*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(100*BTCB_CF))), initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(100*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(100*BTCB_CF))),
initialKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))), initialKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(10*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(1*BTCB_CF))), // $100 + $100 + $100 = $300 * 0.8 = $240 borrowable // $100 * 0.8 = $80 borrowable depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(10*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(1*BTCB_CF))), // $100 + $100 + $100 = $300 * 0.8 = $240 borrowable // $100 * 0.8 = $80 borrowable
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(120*KAVA_CF))), // $240 borrowed borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(120*KAVA_CF))), // $240 borrowed
liquidateAfter: oneMonthInSeconds, liquidateAfter: oneMonthInSeconds,
expectedLiquidatedCoins: sdk.NewCoins(sdk.NewInt64Coin("bnb", 950000000), sdk.NewInt64Coin("btc", 95000000), sdk.NewInt64Coin("ukava", 47504818)), expectedTotalSuppliedCoins: nil,
expectedBidCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 120112133)), expectedTotalBorrowedCoins: nil,
expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(102500253)), sdk.NewCoin("bnb", sdk.NewInt(0.5*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(0.05*BTCB_CF))), // 5% of each seized coin + initial balances expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(102500253)), sdk.NewCoin("bnb", sdk.NewInt(0.5*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(0.05*BTCB_CF))), // 5% of each seized coin + initial balances
expectedBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(170.000001*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(90*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(99*BTCB_CF))), expectedBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(170.000001*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(90*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(99*BTCB_CF))),
expectedAuctions: auctypes.Auctions{ expectedAuctions: auctypes.Auctions{
auctypes.CollateralAuction{ auctypes.CollateralAuction{
BaseAuction: auctypes.BaseAuction{ BaseAuction: auctypes.BaseAuction{
@ -256,19 +256,19 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
"valid: mutliple stablecoin deposits, multiple variable coin borrows", "valid: mutliple stablecoin deposits, multiple variable coin borrows",
// Auctions: total lot value = $285 ($300 of deposits - $15 keeper reward), total max bid value = $270 // Auctions: total lot value = $285 ($300 of deposits - $15 keeper reward), total max bid value = $270
args{ args{
borrower: borrower, borrower: borrower,
keeper: keeper, keeper: keeper,
keeperRewardPercent: sdk.MustNewDecFromStr("0.05"), keeperRewardPercent: sdk.MustNewDecFromStr("0.05"),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(1000*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(1000*BTCB_CF))), initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(1000*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(1000*BTCB_CF))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("usdt", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(100*KAVA_CF))), initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("usdt", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(100*KAVA_CF))),
initialKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))), initialKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("usdc", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("usdt", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(100*KAVA_CF))), // $100 + $100 + $100 = $300 * 0.9 = $270 borrowable depositCoins: sdk.NewCoins(sdk.NewCoin("usdc", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("usdt", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(100*KAVA_CF))), // $100 + $100 + $100 = $300 * 0.9 = $270 borrowable
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(35*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(10*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(1*BTCB_CF))), // $270 borrowed borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(35*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(10*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(1*BTCB_CF))), // $270 borrowed
liquidateAfter: oneMonthInSeconds, liquidateAfter: oneMonthInSeconds,
expectedLiquidatedCoins: sdk.NewCoins(sdk.NewInt64Coin("usdc", 95000000), sdk.NewInt64Coin("usdt", 95000000), sdk.NewInt64Coin("usdx", 94999999)), expectedTotalSuppliedCoins: nil,
expectedBidCoins: sdk.NewCoins(sdk.NewInt64Coin("bnb", 1000082154), sdk.NewInt64Coin("btc", 100000821), sdk.NewInt64Coin("ukava", 35010052)), expectedTotalBorrowedCoins: nil,
expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(5*KAVA_CF)), sdk.NewCoin("usdt", sdk.NewInt(5*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(5*KAVA_CF))), // 5% of each seized coin + initial balances expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(5*KAVA_CF)), sdk.NewCoin("usdt", sdk.NewInt(5*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(5*KAVA_CF))), // 5% of each seized coin + initial balances
expectedBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(135*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(10*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(1*BTCB_CF)), sdk.NewCoin("usdx", sdk.NewInt(0.000001*KAVA_CF))), expectedBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(135*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(10*BNB_CF)), sdk.NewCoin("btc", sdk.NewInt(1*BTCB_CF)), sdk.NewCoin("usdx", sdk.NewInt(0.000001*KAVA_CF))),
expectedAuctions: auctypes.Auctions{ expectedAuctions: auctypes.Auctions{
auctypes.CollateralAuction{ auctypes.CollateralAuction{
BaseAuction: auctypes.BaseAuction{ BaseAuction: auctypes.BaseAuction{
@ -355,19 +355,19 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
{ {
"valid: multiple stablecoin deposits, multiple stablecoin borrows", "valid: multiple stablecoin deposits, multiple stablecoin borrows",
args{ args{
borrower: borrower, borrower: borrower,
keeper: keeper, keeper: keeper,
keeperRewardPercent: sdk.MustNewDecFromStr("0.05"), keeperRewardPercent: sdk.MustNewDecFromStr("0.05"),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdt", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("dai", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(1000*KAVA_CF))), initialModuleCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdt", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("dai", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(1000*KAVA_CF))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdt", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("dai", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(1000*KAVA_CF))), initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdt", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("dai", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(1000*KAVA_CF))),
initialKeeperCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdt", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("dai", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(1000*KAVA_CF))), initialKeeperCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdt", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("dai", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(1000*KAVA_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("dai", sdk.NewInt(350*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(200*KAVA_CF))), depositCoins: sdk.NewCoins(sdk.NewCoin("dai", sdk.NewInt(350*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(200*KAVA_CF))),
borrowCoins: sdk.NewCoins(sdk.NewCoin("usdt", sdk.NewInt(250*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(245*KAVA_CF))), borrowCoins: sdk.NewCoins(sdk.NewCoin("usdt", sdk.NewInt(250*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(245*KAVA_CF))),
liquidateAfter: oneMonthInSeconds, liquidateAfter: oneMonthInSeconds,
expectedLiquidatedCoins: sdk.NewCoins(sdk.NewInt64Coin("dai", 332500000), sdk.NewInt64Coin("usdc", 189999999)), expectedTotalSuppliedCoins: nil,
expectedBidCoins: sdk.NewCoins(sdk.NewInt64Coin("usdx", 245487894), sdk.NewInt64Coin("usdt", 250507897)), expectedTotalBorrowedCoins: nil,
expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("dai", sdk.NewInt(1017.50*KAVA_CF)), sdk.NewCoin("usdt", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(1010*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(1000*KAVA_CF))), expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("dai", sdk.NewInt(1017.50*KAVA_CF)), sdk.NewCoin("usdt", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(1010*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(1000*KAVA_CF))),
expectedBorrowerCoins: sdk.NewCoins(sdk.NewCoin("dai", sdk.NewInt(650*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(800000001)), sdk.NewCoin("usdt", sdk.NewInt(1250*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(1245*KAVA_CF))), expectedBorrowerCoins: sdk.NewCoins(sdk.NewCoin("dai", sdk.NewInt(650*KAVA_CF)), sdk.NewCoin("usdc", sdk.NewInt(800000001)), sdk.NewCoin("usdt", sdk.NewInt(1250*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(1245*KAVA_CF))),
expectedAuctions: auctypes.Auctions{ expectedAuctions: auctypes.Auctions{
auctypes.CollateralAuction{ auctypes.CollateralAuction{
BaseAuction: auctypes.BaseAuction{ BaseAuction: auctypes.BaseAuction{
@ -424,20 +424,20 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
{ {
"invalid: borrow not liquidatable", "invalid: borrow not liquidatable",
args{ args{
borrower: borrower, borrower: borrower,
keeper: keeper, keeper: keeper,
keeperRewardPercent: sdk.MustNewDecFromStr("0.05"), keeperRewardPercent: sdk.MustNewDecFromStr("0.05"),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))), initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))), initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
initialKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))), initialKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(20*KAVA_CF))), // Deposit 20 KAVA depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(20*KAVA_CF))), // Deposit 20 KAVA
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(5*KAVA_CF))), // Borrow 5 KAVA borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(5*KAVA_CF))), // Borrow 5 KAVA
liquidateAfter: oneMonthInSeconds, liquidateAfter: oneMonthInSeconds,
expectedLiquidatedCoins: sdk.Coins{}, expectedTotalSuppliedCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(20001624))),
expectedBidCoins: sdk.Coins{}, expectedTotalBorrowedCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(5001709))),
expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100.5*KAVA_CF))), expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100.5*KAVA_CF))),
expectedBorrowerCoins: sdk.NewCoins(), expectedBorrowerCoins: sdk.NewCoins(),
expectedAuctions: auctypes.Auctions{}, expectedAuctions: auctypes.Auctions{},
}, },
errArgs{ errArgs{
expectPass: false, expectPass: false,
@ -650,10 +650,9 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
// Check that supplied and borrowed coins have been updated post-liquidation // Check that supplied and borrowed coins have been updated post-liquidation
suppliedCoinsPost, _ := suite.keeper.GetSuppliedCoins(liqCtx) suppliedCoinsPost, _ := suite.keeper.GetSuppliedCoins(liqCtx)
suite.Require().Equal(suppliedCoinsPre.Sub(tc.args.expectedLiquidatedCoins), suppliedCoinsPost) suite.Require().Equal(tc.args.expectedTotalSuppliedCoins, suppliedCoinsPost)
borrowedCoinsPost, _ := suite.keeper.GetBorrowedCoins(liqCtx) borrowedCoinsPost, _ := suite.keeper.GetBorrowedCoins(liqCtx)
suite.Require().Equal(tc.args.expectedTotalBorrowedCoins, borrowedCoinsPost)
suite.Require().Equal(borrowedCoinsPre.Add(tc.args.expectedBidCoins...), borrowedCoinsPost)
} else { } else {
suite.Require().Error(err) suite.Require().Error(err)
suite.Require().True(strings.Contains(err.Error(), tc.errArgs.contains)) suite.Require().True(strings.Contains(err.Error(), tc.errArgs.contains))
@ -668,6 +667,10 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
// Check that no auctions have been created // Check that no auctions have been created
auctions := suite.auctionKeeper.GetAllAuctions(liqCtx) auctions := suite.auctionKeeper.GetAllAuctions(liqCtx)
suite.Require().True(len(auctions) == 0) suite.Require().True(len(auctions) == 0)
// Check that supplied and borrowed coins have not been updated post-liquidation
suite.Require().Equal(tc.args.expectedTotalSuppliedCoins, suppliedCoinsPre)
suite.Require().Equal(tc.args.expectedTotalBorrowedCoins, borrowedCoinsPre)
} }
}) })
} }

5
x/hard/keeper/repay.go
View File

@ -58,7 +58,10 @@ func (k Keeper) Repay(ctx sdk.Context, sender, owner sdk.AccAddress, coins sdk.C
} }
// Update total borrowed amount // Update total borrowed amount
k.DecrementBorrowedCoins(ctx, payment) err = k.DecrementBorrowedCoins(ctx, payment)
if err != nil {
return err
}
// Call incentive hook // Call incentive hook
if !borrow.Amount.Empty() { if !borrow.Amount.Empty() {

6
x/hard/keeper/withdraw.go
View File

@ -64,8 +64,12 @@ func (k Keeper) Withdraw(ctx sdk.Context, depositor sdk.AccAddress, coins sdk.Co
} else { } else {
k.SetDeposit(ctx, deposit) k.SetDeposit(ctx, deposit)
} }
// Update total supplied amount // Update total supplied amount
k.DecrementSuppliedCoins(ctx, amount) err = k.DecrementSuppliedCoins(ctx, amount)
if err != nil {
return err
}
// Call incentive hook // Call incentive hook
k.AfterDepositModified(ctx, deposit) k.AfterDepositModified(ctx, deposit)