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decrement/increment coin counters on auctions (#809)

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This commit is contained in:
Denali Marsh 2021-02-09 21:32:28 +01:00 committed by GitHub
parent 7d4235ca87
commit 7465c643b8
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 121 additions and 86 deletions
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8
x/hard/keeper/liquidation.go
View File

@ -187,6 +187,10 @@ func (k Keeper) StartAuctions(ctx sdk.Context, borrower sdk.AccAddress, borrows,
if err != nil {
return liquidatedCoins, err
}
// Decrement supplied coins and increment borrowed coins optimistically
k.DecrementSuppliedCoins(ctx, sdk.Coins{lot})
k.IncrementBorrowedCoins(ctx, sdk.Coins{bid})
// Add lot to liquidated coins
liquidatedCoins = liquidatedCoins.Add(lot)
@ -232,6 +236,10 @@ func (k Keeper) StartAuctions(ctx sdk.Context, borrower sdk.AccAddress, borrows,
if err != nil {
return liquidatedCoins, err
}
// Decrement supplied coins and increment borrowed coins optimistically
k.DecrementSuppliedCoins(ctx, sdk.Coins{lot})
k.IncrementBorrowedCoins(ctx, sdk.Coins{bid})
// Add lot to liquidated coins
liquidatedCoins = liquidatedCoins.Add(lot)

27
x/hard/keeper/liquidation_test.go
View File

@ -27,6 +27,8 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
depositCoins []sdk.Coin
borrowCoins sdk.Coins
liquidateAfter int64
expectedLiquidatedCoins sdk.Coins
expectedBidCoins sdk.Coins
auctionSize sdk.Int
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
@ -71,6 +73,8 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(10*KAVA_CF))),
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(8*KAVA_CF))),
liquidateAfter: oneMonthInSeconds,
expectedLiquidatedCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 9500390)),
expectedBidCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 8004766)),
auctionSize: sdk.NewInt(KAVA_CF * 1000),
expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100500020))),
expectedBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(98000001))), // initial - deposit + borrow + liquidation leftovers
@ -109,6 +113,8 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
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
liquidateAfter: oneMonthInSeconds,
expectedLiquidatedCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 47500032)),
expectedBidCoins: sdk.NewCoins(sdk.NewInt64Coin("bnb", 200003287), sdk.NewInt64Coin("btc", 20000032), sdk.NewInt64Coin("ukava", 10000782), sdk.NewInt64Coin("usdc", 20003284)),
auctionSize: sdk.NewInt(KAVA_CF * 1000),
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
@ -192,6 +198,8 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
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
liquidateAfter: oneMonthInSeconds,
expectedLiquidatedCoins: sdk.NewCoins(sdk.NewInt64Coin("bnb", 950000000), sdk.NewInt64Coin("btc", 95000000), sdk.NewInt64Coin("ukava", 47504818)),
expectedBidCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 120112133)),
auctionSize: sdk.NewInt(KAVA_CF * 1000),
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))),
@ -261,6 +269,8 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
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
liquidateAfter: oneMonthInSeconds,
expectedLiquidatedCoins: sdk.NewCoins(sdk.NewInt64Coin("usdc", 95000000), sdk.NewInt64Coin("usdt", 95000000), sdk.NewInt64Coin("usdx", 94999999)),
expectedBidCoins: sdk.NewCoins(sdk.NewInt64Coin("bnb", 1000082154), sdk.NewInt64Coin("btc", 100000821), sdk.NewInt64Coin("ukava", 35010052)),
auctionSize: sdk.NewInt(KAVA_CF * 1000),
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))),
@ -359,6 +369,8 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
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))),
liquidateAfter: oneMonthInSeconds,
expectedLiquidatedCoins: sdk.NewCoins(sdk.NewInt64Coin("dai", 332500000), sdk.NewInt64Coin("usdc", 189999999)),
expectedBidCoins: sdk.NewCoins(sdk.NewInt64Coin("usdx", 245487894), sdk.NewInt64Coin("usdt", 250507897)),
auctionSize: sdk.NewInt(KAVA_CF * 100000),
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))),
@ -427,6 +439,8 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
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
liquidateAfter: oneMonthInSeconds,
expectedLiquidatedCoins: sdk.Coins{},
expectedBidCoins: sdk.Coins{},
auctionSize: sdk.NewInt(KAVA_CF * 1000),
expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100.5*KAVA_CF))),
expectedBorrowerCoins: sdk.NewCoins(),
@ -616,6 +630,12 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
_, foundDepositBefore := suite.keeper.GetDeposit(liqCtx, tc.args.borrower)
suite.Require().True(foundDepositBefore)
// Fetch supplied and borrowed coins pre-liquidation
suppliedCoinsPre, foundSuppliedCoinsPre := suite.keeper.GetSuppliedCoins(liqCtx)
suite.Require().True(foundSuppliedCoinsPre)
borrowedCoinsPre, foundBorrowedCoinsPre := suite.keeper.GetBorrowedCoins(liqCtx)
suite.Require().True(foundBorrowedCoinsPre)
// Attempt to liquidate
err = suite.keeper.AttemptKeeperLiquidation(liqCtx, tc.args.keeper, tc.args.borrower)
if tc.errArgs.expectPass {
@ -640,6 +660,13 @@ func (suite *KeeperTestSuite) TestKeeperLiquidation() {
auctions := suite.auctionKeeper.GetAllAuctions(liqCtx)
suite.Require().True(len(auctions) > 0)
suite.Require().Equal(tc.args.expectedAuctions, auctions)
// Check that supplied and borrowed coins have been updated post-liquidation
suppliedCoinsPost, _ := suite.keeper.GetSuppliedCoins(liqCtx)
suite.Require().Equal(suppliedCoinsPre.Sub(tc.args.expectedLiquidatedCoins), suppliedCoinsPost)
borrowedCoinsPost, _ := suite.keeper.GetBorrowedCoins(liqCtx)
suite.Require().Equal(borrowedCoinsPre.Add(tc.args.expectedBidCoins...), borrowedCoinsPost)
} else {
suite.Require().Error(err)
suite.Require().True(strings.Contains(err.Error(), tc.errArgs.contains))