package keeper_test import ( "strings" "time" sdk "github.com/cosmos/cosmos-sdk/types" abci "github.com/tendermint/tendermint/abci/types" "github.com/tendermint/tendermint/crypto" tmtime "github.com/tendermint/tendermint/types/time" "github.com/kava-labs/kava/app" "github.com/kava-labs/kava/x/hard" "github.com/kava-labs/kava/x/hard/types" "github.com/kava-labs/kava/x/pricefeed" ) const ( USDX_CF = 1000000 KAVA_CF = 1000000 BTCB_CF = 100000000 BNB_CF = 100000000 BUSD_CF = 100000000 ) func (suite *KeeperTestSuite) TestBorrow() { type args struct { usdxBorrowLimit sdk.Dec priceKAVA sdk.Dec loanToValueKAVA sdk.Dec priceBTCB sdk.Dec loanToValueBTCB sdk.Dec priceBNB sdk.Dec loanToValueBNB sdk.Dec borrower sdk.AccAddress depositCoins []sdk.Coin previousBorrowCoins sdk.Coins borrowCoins sdk.Coins expectedAccountBalance sdk.Coins expectedModAccountBalance sdk.Coins } type errArgs struct { expectPass bool contains string } type borrowTest struct { name string args args errArgs errArgs } testCases := []borrowTest{ { "valid", args{ usdxBorrowLimit: sdk.MustNewDecFromStr("100000000000"), priceKAVA: sdk.MustNewDecFromStr("5.00"), loanToValueKAVA: sdk.MustNewDecFromStr("0.6"), priceBTCB: sdk.MustNewDecFromStr("0.00"), loanToValueBTCB: sdk.MustNewDecFromStr("0.01"), priceBNB: sdk.MustNewDecFromStr("0.00"), loanToValueBNB: sdk.MustNewDecFromStr("0.01"), borrower: sdk.AccAddress(crypto.AddressHash([]byte("test"))), depositCoins: []sdk.Coin{sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))}, previousBorrowCoins: sdk.NewCoins(), borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(20*KAVA_CF))), expectedAccountBalance: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(20*KAVA_CF)), sdk.NewCoin("btcb", sdk.NewInt(100*BTCB_CF)), sdk.NewCoin("bnb", sdk.NewInt(100*BNB_CF)), sdk.NewCoin("xyz", sdk.NewInt(1))), expectedModAccountBalance: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1080*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(200*USDX_CF)), sdk.NewCoin("busd", sdk.NewInt(100*BUSD_CF))), }, errArgs{ expectPass: true, contains: "", }, }, { "invalid: loan-to-value limited", args{ usdxBorrowLimit: sdk.MustNewDecFromStr("100000000000"), priceKAVA: sdk.MustNewDecFromStr("5.00"), loanToValueKAVA: sdk.MustNewDecFromStr("0.6"), priceBTCB: sdk.MustNewDecFromStr("0.00"), loanToValueBTCB: sdk.MustNewDecFromStr("0.01"), priceBNB: sdk.MustNewDecFromStr("0.00"), loanToValueBNB: sdk.MustNewDecFromStr("0.01"), borrower: sdk.AccAddress(crypto.AddressHash([]byte("test"))), depositCoins: []sdk.Coin{sdk.NewCoin("ukava", sdk.NewInt(20*KAVA_CF))}, // 20 KAVA x $5.00 price = $100 borrowCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(61*USDX_CF))), // 61 USDX x $1 price = $61 expectedAccountBalance: sdk.NewCoins(), expectedModAccountBalance: sdk.NewCoins(), }, errArgs{ expectPass: false, contains: "exceeds the allowable amount as determined by the collateralization ratio", }, }, { "valid: multiple deposits", args{ usdxBorrowLimit: sdk.MustNewDecFromStr("100000000000"), priceKAVA: sdk.MustNewDecFromStr("2.00"), loanToValueKAVA: sdk.MustNewDecFromStr("0.80"), priceBTCB: sdk.MustNewDecFromStr("10000.00"), loanToValueBTCB: sdk.MustNewDecFromStr("0.10"), priceBNB: sdk.MustNewDecFromStr("0.00"), loanToValueBNB: sdk.MustNewDecFromStr("0.01"), borrower: sdk.AccAddress(crypto.AddressHash([]byte("test"))), depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF)), sdk.NewCoin("btcb", sdk.NewInt(0.1*BTCB_CF))), borrowCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(180*USDX_CF))), expectedAccountBalance: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF)), sdk.NewCoin("btcb", sdk.NewInt(99.9*BTCB_CF)), sdk.NewCoin("usdx", sdk.NewInt(180*USDX_CF)), sdk.NewCoin("bnb", sdk.NewInt(100*BNB_CF)), sdk.NewCoin("xyz", sdk.NewInt(1))), expectedModAccountBalance: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1050*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(20*USDX_CF)), sdk.NewCoin("btcb", sdk.NewInt(0.1*BTCB_CF)), sdk.NewCoin("busd", sdk.NewInt(100*BUSD_CF))), }, errArgs{ expectPass: true, contains: "", }, }, { "invalid: multiple deposits", args{ usdxBorrowLimit: sdk.MustNewDecFromStr("100000000000"), priceKAVA: sdk.MustNewDecFromStr("2.00"), loanToValueKAVA: sdk.MustNewDecFromStr("0.80"), priceBTCB: sdk.MustNewDecFromStr("10000.00"), loanToValueBTCB: sdk.MustNewDecFromStr("0.10"), priceBNB: sdk.MustNewDecFromStr("0.00"), loanToValueBNB: sdk.MustNewDecFromStr("0.01"), borrower: sdk.AccAddress(crypto.AddressHash([]byte("test"))), depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF)), sdk.NewCoin("btcb", sdk.NewInt(0.1*BTCB_CF))), borrowCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(181*USDX_CF))), expectedAccountBalance: sdk.NewCoins(), expectedModAccountBalance: sdk.NewCoins(), }, errArgs{ expectPass: false, contains: "exceeds the allowable amount as determined by the collateralization ratio", }, }, { "valid: multiple previous borrows", args{ usdxBorrowLimit: sdk.MustNewDecFromStr("100000000000"), priceKAVA: sdk.MustNewDecFromStr("2.00"), loanToValueKAVA: sdk.MustNewDecFromStr("0.8"), priceBTCB: sdk.MustNewDecFromStr("0.00"), loanToValueBTCB: sdk.MustNewDecFromStr("0.01"), priceBNB: sdk.MustNewDecFromStr("5.00"), loanToValueBNB: sdk.MustNewDecFromStr("0.8"), borrower: sdk.AccAddress(crypto.AddressHash([]byte("test"))), depositCoins: sdk.NewCoins(sdk.NewCoin("bnb", sdk.NewInt(30*BNB_CF)), sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF))), // (50 KAVA x $2.00 price = $100) + (30 BNB x $5.00 price = $150) = $250 previousBorrowCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(99*USDX_CF)), sdk.NewCoin("busd", sdk.NewInt(100*BUSD_CF))), borrowCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(1*USDX_CF))), expectedAccountBalance: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF)), sdk.NewCoin("btcb", sdk.NewInt(100*BTCB_CF)), sdk.NewCoin("usdx", sdk.NewInt(100*USDX_CF)), sdk.NewCoin("busd", sdk.NewInt(100*BUSD_CF)), sdk.NewCoin("bnb", sdk.NewInt(70*BNB_CF)), sdk.NewCoin("xyz", sdk.NewInt(1))), expectedModAccountBalance: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1050*KAVA_CF)), sdk.NewCoin("bnb", sdk.NewInt(30*BUSD_CF)), sdk.NewCoin("usdx", sdk.NewInt(100*USDX_CF))), }, errArgs{ expectPass: true, contains: "", }, }, { "invalid: over loan-to-value with multiple previous borrows", args{ usdxBorrowLimit: sdk.MustNewDecFromStr("100000000000"), priceKAVA: sdk.MustNewDecFromStr("2.00"), loanToValueKAVA: sdk.MustNewDecFromStr("0.8"), priceBTCB: sdk.MustNewDecFromStr("0.00"), loanToValueBTCB: sdk.MustNewDecFromStr("0.01"), priceBNB: sdk.MustNewDecFromStr("5.00"), loanToValueBNB: sdk.MustNewDecFromStr("0.8"), borrower: sdk.AccAddress(crypto.AddressHash([]byte("test"))), depositCoins: sdk.NewCoins(sdk.NewCoin("bnb", sdk.NewInt(30*BNB_CF)), sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF))), // (50 KAVA x $2.00 price = $100) + (30 BNB x $5.00 price = $150) = $250 previousBorrowCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(100*USDX_CF)), sdk.NewCoin("busd", sdk.NewInt(100*BUSD_CF))), borrowCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(1*USDX_CF))), expectedAccountBalance: sdk.NewCoins(), expectedModAccountBalance: sdk.NewCoins(), }, errArgs{ expectPass: false, contains: "exceeds the allowable amount as determined by the collateralization ratio", }, }, { "invalid: no price for asset", args{ usdxBorrowLimit: sdk.MustNewDecFromStr("100000000000"), priceKAVA: sdk.MustNewDecFromStr("5.00"), loanToValueKAVA: sdk.MustNewDecFromStr("0.6"), priceBTCB: sdk.MustNewDecFromStr("0.00"), loanToValueBTCB: sdk.MustNewDecFromStr("0.01"), priceBNB: sdk.MustNewDecFromStr("0.00"), loanToValueBNB: sdk.MustNewDecFromStr("0.01"), borrower: sdk.AccAddress(crypto.AddressHash([]byte("test"))), depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))), previousBorrowCoins: sdk.NewCoins(), borrowCoins: sdk.NewCoins(sdk.NewCoin("xyz", sdk.NewInt(1))), expectedAccountBalance: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(20*KAVA_CF)), sdk.NewCoin("btcb", sdk.NewInt(100*BTCB_CF)), sdk.NewCoin("bnb", sdk.NewInt(100*BNB_CF)), sdk.NewCoin("xyz", sdk.NewInt(1))), expectedModAccountBalance: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1080*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(200*USDX_CF)), sdk.NewCoin("busd", sdk.NewInt(100*BUSD_CF))), }, errArgs{ expectPass: false, contains: "no price found for market", }, }, { "invalid: borrow exceed module account balance", args{ usdxBorrowLimit: sdk.MustNewDecFromStr("100000000000"), priceKAVA: sdk.MustNewDecFromStr("2.00"), loanToValueKAVA: sdk.MustNewDecFromStr("0.8"), priceBTCB: sdk.MustNewDecFromStr("0.00"), loanToValueBTCB: sdk.MustNewDecFromStr("0.01"), priceBNB: sdk.MustNewDecFromStr("0.00"), loanToValueBNB: sdk.MustNewDecFromStr("0.01"), borrower: sdk.AccAddress(crypto.AddressHash([]byte("test"))), depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))), previousBorrowCoins: sdk.NewCoins(), borrowCoins: sdk.NewCoins(sdk.NewCoin("busd", sdk.NewInt(101*BUSD_CF))), expectedAccountBalance: sdk.NewCoins(), expectedModAccountBalance: sdk.NewCoins(), }, errArgs{ expectPass: false, contains: "exceeds module account balance:", }, }, { "invalid: over global asset borrow limit", args{ usdxBorrowLimit: sdk.MustNewDecFromStr("20000000"), priceKAVA: sdk.MustNewDecFromStr("2.00"), loanToValueKAVA: sdk.MustNewDecFromStr("0.8"), priceBTCB: sdk.MustNewDecFromStr("0.00"), loanToValueBTCB: sdk.MustNewDecFromStr("0.01"), priceBNB: sdk.MustNewDecFromStr("0.00"), loanToValueBNB: sdk.MustNewDecFromStr("0.01"), borrower: sdk.AccAddress(crypto.AddressHash([]byte("test"))), depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF))), previousBorrowCoins: sdk.NewCoins(), borrowCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(25*USDX_CF))), expectedAccountBalance: sdk.NewCoins(), expectedModAccountBalance: sdk.NewCoins(), }, errArgs{ expectPass: false, contains: "fails global asset borrow limit validation", }, }, } for _, tc := range testCases { suite.Run(tc.name, func() { // Initialize test app and set context tApp := app.NewTestApp() ctx := tApp.NewContext(true, abci.Header{Height: 1, Time: tmtime.Now()}) // Auth module genesis state authGS := app.NewAuthGenState( []sdk.AccAddress{tc.args.borrower}, []sdk.Coins{sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF)), sdk.NewCoin("btcb", sdk.NewInt(100*BTCB_CF)), sdk.NewCoin("bnb", sdk.NewInt(100*BNB_CF)), sdk.NewCoin("xyz", sdk.NewInt(1)))}) // hard module genesis state hardGS := types.NewGenesisState(types.NewParams( true, types.MoneyMarkets{ types.NewMoneyMarket("usdx", types.NewBorrowLimit(true, tc.args.usdxBorrowLimit, sdk.MustNewDecFromStr("1")), "usdx:usd", sdk.NewInt(USDX_CF), sdk.NewInt(USDX_CF*1000), types.NewInterestRateModel(sdk.MustNewDecFromStr("0.05"), sdk.MustNewDecFromStr("2"), sdk.MustNewDecFromStr("0.8"), sdk.MustNewDecFromStr("10")), sdk.MustNewDecFromStr("0.05"), sdk.ZeroDec()), types.NewMoneyMarket("busd", types.NewBorrowLimit(false, sdk.NewDec(100000000*BUSD_CF), sdk.MustNewDecFromStr("1")), "busd:usd", sdk.NewInt(BUSD_CF), sdk.NewInt(BUSD_CF*1000), types.NewInterestRateModel(sdk.MustNewDecFromStr("0.05"), sdk.MustNewDecFromStr("2"), sdk.MustNewDecFromStr("0.8"), sdk.MustNewDecFromStr("10")), sdk.MustNewDecFromStr("0.05"), sdk.ZeroDec()), types.NewMoneyMarket("ukava", types.NewBorrowLimit(false, sdk.NewDec(100000000*KAVA_CF), tc.args.loanToValueKAVA), "kava:usd", sdk.NewInt(KAVA_CF), sdk.NewInt(KAVA_CF*1000), types.NewInterestRateModel(sdk.MustNewDecFromStr("0.05"), sdk.MustNewDecFromStr("2"), sdk.MustNewDecFromStr("0.8"), sdk.MustNewDecFromStr("10")), sdk.MustNewDecFromStr("0.05"), sdk.ZeroDec()), types.NewMoneyMarket("btcb", types.NewBorrowLimit(false, sdk.NewDec(100000000*BTCB_CF), tc.args.loanToValueBTCB), "btcb:usd", sdk.NewInt(BTCB_CF), sdk.NewInt(BTCB_CF*1000), types.NewInterestRateModel(sdk.MustNewDecFromStr("0.05"), sdk.MustNewDecFromStr("2"), sdk.MustNewDecFromStr("0.8"), sdk.MustNewDecFromStr("10")), sdk.MustNewDecFromStr("0.05"), sdk.ZeroDec()), types.NewMoneyMarket("bnb", types.NewBorrowLimit(false, sdk.NewDec(100000000*BNB_CF), tc.args.loanToValueBNB), "bnb:usd", sdk.NewInt(BNB_CF), sdk.NewInt(BNB_CF*1000), types.NewInterestRateModel(sdk.MustNewDecFromStr("0.05"), sdk.MustNewDecFromStr("2"), sdk.MustNewDecFromStr("0.8"), sdk.MustNewDecFromStr("10")), sdk.MustNewDecFromStr("0.05"), sdk.ZeroDec()), types.NewMoneyMarket("xyz", types.NewBorrowLimit(false, sdk.NewDec(1), tc.args.loanToValueBNB), "xyz:usd", sdk.NewInt(1), sdk.NewInt(1), types.NewInterestRateModel(sdk.MustNewDecFromStr("0.05"), sdk.MustNewDecFromStr("2"), sdk.MustNewDecFromStr("0.8"), sdk.MustNewDecFromStr("10")), sdk.MustNewDecFromStr("0.05"), sdk.ZeroDec()), }, 0, // LTV counter ), types.DefaultPreviousBlockTime) // Pricefeed module genesis state pricefeedGS := pricefeed.GenesisState{ Params: pricefeed.Params{ Markets: []pricefeed.Market{ {MarketID: "usdx:usd", BaseAsset: "usdx", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true}, {MarketID: "busd:usd", BaseAsset: "busd", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true}, {MarketID: "kava:usd", BaseAsset: "kava", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true}, {MarketID: "btcb:usd", BaseAsset: "btcb", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true}, {MarketID: "bnb:usd", BaseAsset: "bnb", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true}, {MarketID: "xyz:usd", BaseAsset: "xyz", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true}, }, }, PostedPrices: []pricefeed.PostedPrice{ { MarketID: "usdx:usd", OracleAddress: sdk.AccAddress{}, Price: sdk.MustNewDecFromStr("1.00"), Expiry: time.Now().Add(1 * time.Hour), }, { MarketID: "busd:usd", OracleAddress: sdk.AccAddress{}, Price: sdk.MustNewDecFromStr("1.00"), Expiry: time.Now().Add(1 * time.Hour), }, { MarketID: "kava:usd", OracleAddress: sdk.AccAddress{}, Price: tc.args.priceKAVA, Expiry: time.Now().Add(1 * time.Hour), }, { MarketID: "btcb:usd", OracleAddress: sdk.AccAddress{}, Price: tc.args.priceBTCB, Expiry: time.Now().Add(1 * time.Hour), }, { MarketID: "bnb:usd", OracleAddress: sdk.AccAddress{}, Price: tc.args.priceBNB, Expiry: time.Now().Add(1 * time.Hour), }, }, } // Initialize test application tApp.InitializeFromGenesisStates(authGS, app.GenesisState{pricefeed.ModuleName: pricefeed.ModuleCdc.MustMarshalJSON(pricefeedGS)}, app.GenesisState{types.ModuleName: types.ModuleCdc.MustMarshalJSON(hardGS)}) // Mint coins to hard module account supplyKeeper := tApp.GetSupplyKeeper() hardMaccCoins := sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(200*USDX_CF)), sdk.NewCoin("busd", sdk.NewInt(100*BUSD_CF))) supplyKeeper.MintCoins(ctx, types.ModuleAccountName, hardMaccCoins) keeper := tApp.GetHardKeeper() suite.app = tApp suite.ctx = ctx suite.keeper = keeper var err error // Run BeginBlocker once to transition MoneyMarkets hard.BeginBlocker(suite.ctx, suite.keeper) err = suite.keeper.Deposit(suite.ctx, tc.args.borrower, tc.args.depositCoins) suite.Require().NoError(err) // Execute user's previous borrows err = suite.keeper.Borrow(suite.ctx, tc.args.borrower, tc.args.previousBorrowCoins) if tc.args.previousBorrowCoins.IsZero() { suite.Require().True(strings.Contains(err.Error(), "cannot borrow zero coins")) } else { suite.Require().NoError(err) } // Now that our state is properly set up, execute the last borrow err = suite.keeper.Borrow(suite.ctx, tc.args.borrower, tc.args.borrowCoins) if tc.errArgs.expectPass { suite.Require().NoError(err) // Check borrower balance acc := suite.getAccount(tc.args.borrower) suite.Require().Equal(tc.args.expectedAccountBalance, acc.GetCoins()) // Check module account balance mAcc := suite.getModuleAccount(types.ModuleAccountName) suite.Require().Equal(tc.args.expectedModAccountBalance, mAcc.GetCoins()) // Check that borrow struct is in store _, f := suite.keeper.GetBorrow(suite.ctx, tc.args.borrower) suite.Require().True(f) } else { suite.Require().Error(err) suite.Require().True(strings.Contains(err.Error(), tc.errArgs.contains)) } }) } }