package keeper_test
import (
"strings"
"time"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/tendermint/tendermint/crypto"
tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
"github.com/kava-labs/kava/app"
auctiontypes "github.com/kava-labs/kava/x/auction/types"
"github.com/kava-labs/kava/x/hard"
"github.com/kava-labs/kava/x/hard/types"
pricefeedtypes "github.com/kava-labs/kava/x/pricefeed/types"
)
func (suite *KeeperTestSuite) TestKeeperLiquidation() {
type args struct {
borrower sdk.AccAddress
keeper sdk.AccAddress
keeperRewardPercent sdk.Dec
initialModuleCoins sdk.Coins
initialBorrowerCoins sdk.Coins
initialKeeperCoins sdk.Coins
depositCoins []sdk.Coin
borrowCoins sdk.Coins
liquidateAfter time.Duration
expectedTotalSuppliedCoins sdk.Coins
expectedTotalBorrowedCoins sdk.Coins
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
expectedAuctions []auctiontypes.Auction // the auctions we should expect to find have been started
}
type errArgs struct {
expectPass bool
contains string
}
type liqTest struct {
name string
args args
errArgs errArgs
}
// Set up test constants
model := types.NewInterestRateModel(sdk.MustNewDecFromStr("0"), sdk.MustNewDecFromStr("0.1"), sdk.MustNewDecFromStr("0.8"), sdk.MustNewDecFromStr("0.5"))
reserveFactor := sdk.MustNewDecFromStr("0.05")
oneMonthDur := time.Second * 30 * 24 * 3600
borrower := sdk.AccAddress(crypto.AddressHash([]byte("testborrower")))
keeper := sdk.AccAddress(crypto.AddressHash([]byte("testkeeper")))
// Set up auction constants
layout := "2006-01-02T15:04:05.000Z"
endTimeStr := "9000-01-01T00:00:00.000Z"
endTime, _ := time.Parse(layout, endTimeStr)
lotReturns, _ := auctiontypes.NewWeightedAddresses([]sdk.AccAddress{borrower}, []sdk.Int{sdk.NewInt(100)})
testCases := []liqTest{
{
"valid: keeper liquidates borrow",
args{
borrower: borrower,
keeper: keeper,
keeperRewardPercent: sdk.MustNewDecFromStr("0.05"),
initialModuleCoins: 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))),
depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(10*KAVA_CF))),
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(8*KAVA_CF))),
liquidateAfter: oneMonthDur,
expectedTotalSuppliedCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 100004118)),
expectedTotalBorrowedCoins: nil,
expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100500020))),
expectedBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(98000001))), // initial - deposit + borrow + liquidation leftovers
expectedAuctions: []auctiontypes.Auction{
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 1,
Initiator: "hard",
Lot: sdk.NewInt64Coin("ukava", 9500390),
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("ukava", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("ukava", 8004766),
LotReturns: lotReturns,
},
},
},
errArgs{
expectPass: true,
contains: "",
},
},
{
"valid: 0% keeper rewards",
args{
borrower: borrower,
keeper: keeper,
keeperRewardPercent: sdk.MustNewDecFromStr("0.0"),
initialModuleCoins: 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))),
depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(10*KAVA_CF))),
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(8*KAVA_CF))),
liquidateAfter: oneMonthDur,
expectedTotalSuppliedCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 100_004_117)),
expectedTotalBorrowedCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 1)),
expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
expectedBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(98*KAVA_CF))), // initial - deposit + borrow + liquidation leftovers
expectedAuctions: []auctiontypes.Auction{
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 1,
Initiator: "hard",
Lot: sdk.NewInt64Coin("ukava", 10000411),
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("ukava", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("ukava", 8004765),
LotReturns: lotReturns,
},
},
},
errArgs{
expectPass: true,
contains: "",
},
},
{
"valid: 100% keeper reward",
args{
borrower: borrower,
keeper: keeper,
keeperRewardPercent: sdk.MustNewDecFromStr("1.0"),
initialModuleCoins: 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))),
depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(10*KAVA_CF))),
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(8*KAVA_CF))),
liquidateAfter: oneMonthDur,
expectedTotalSuppliedCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 100_004_117)),
expectedTotalBorrowedCoins: sdk.NewCoins(sdk.NewInt64Coin("ukava", 8_004_766)),
expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(110_000_411))),
expectedBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(98*KAVA_CF))), // initial - deposit + borrow + liquidation leftovers
expectedAuctions: nil,
},
errArgs{
expectPass: true,
contains: "",
},
},
{
"valid: single deposit, multiple borrows",
args{
borrower: borrower,
keeper: keeper,
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))),
initialBorrowerCoins: 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
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: oneMonthDur,
expectedTotalSuppliedCoins: sdk.NewCoins(
sdk.NewInt64Coin("ukava", 1000000710),
sdk.NewInt64Coin("usdc", 1000003120),
sdk.NewInt64Coin("bnb", 100000003123),
sdk.NewInt64Coin("btc", 100000000031),
),
expectedTotalBorrowedCoins: nil,
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
expectedAuctions: []auctiontypes.Auction{
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 1,
Initiator: "hard",
Lot: sdk.NewInt64Coin("ukava", 11874430),
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("bnb", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("bnb", 200003287),
LotReturns: lotReturns,
},
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 2,
Initiator: "hard",
Lot: sdk.NewInt64Coin("ukava", 11874254),
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("btc", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("btc", 20000032),
LotReturns: lotReturns,
},
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 3,
Initiator: "hard",
Lot: sdk.NewInt64Coin("ukava", 11875163),
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("ukava", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("ukava", 10000782),
LotReturns: lotReturns,
},
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 4,
Initiator: "hard",
Lot: sdk.NewInt64Coin("ukava", 11876185),
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("usdc", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("usdc", 20003284),
LotReturns: lotReturns,
},
},
},
errArgs{
expectPass: true,
contains: "",
},
},
{
"valid: multiple deposits, single borrow",
args{
borrower: borrower,
keeper: keeper,
keeperRewardPercent: sdk.MustNewDecFromStr("0.05"),
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))),
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
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(120*KAVA_CF))), // $240 borrowed
liquidateAfter: oneMonthDur,
expectedTotalSuppliedCoins: sdk.NewCoins(
sdk.NewInt64Coin("ukava", 1000101456),
),
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
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: []auctiontypes.Auction{
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 1,
Initiator: "hard",
Lot: sdk.NewInt64Coin("bnb", 950000000),
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("ukava", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("ukava", 40036023),
LotReturns: lotReturns,
},
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 2,
Initiator: "hard",
Lot: sdk.NewInt64Coin("btc", 95000000),
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("ukava", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("ukava", 40036023),
LotReturns: lotReturns,
},
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 3,
Initiator: "hard",
Lot: sdk.NewInt64Coin("ukava", 47504818),
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("ukava", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("ukava", 40040087),
LotReturns: lotReturns,
},
},
},
errArgs{
expectPass: true,
contains: "",
},
},
{
"valid: multiple stablecoin deposits, multiple variable coin borrows",
// Auctions: total lot value = $285 ($300 of deposits - $15 keeper reward), total max bid value = $270
args{
borrower: borrower,
keeper: keeper,
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))),
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))),
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: oneMonthDur,
expectedTotalSuppliedCoins: sdk.NewCoins(
sdk.NewInt64Coin("bnb", 100000078047),
sdk.NewInt64Coin("btc", 100000000780),
sdk.NewInt64Coin("ukava", 1000009550),
sdk.NewInt64Coin("usdx", 1),
),
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
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: []auctiontypes.Auction{
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 1,
Initiator: "hard",
Lot: sdk.NewInt64Coin("usdc", 95000000), // $95.00
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("bnb", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("bnb", 900097134), // $90.00
LotReturns: lotReturns,
},
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 2,
Initiator: "hard",
Lot: sdk.NewInt64Coin("usdt", 10552835), // $10.55
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("bnb", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("bnb", 99985020), // $10.00
LotReturns: lotReturns,
},
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 3,
Initiator: "hard",
Lot: sdk.NewInt64Coin("usdt", 84447165), // $84.45
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("btc", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("btc", 80011211), // $80.01
LotReturns: lotReturns,
},
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 4,
Initiator: "hard",
Lot: sdk.NewInt64Coin("usdx", 21097866), // $21.10
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("btc", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("btc", 19989610), // $19.99
LotReturns: lotReturns,
},
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 5,
Initiator: "hard",
Lot: sdk.NewInt64Coin("usdx", 73902133), //$73.90
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("ukava", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("ukava", 35010052), // $70.02
LotReturns: lotReturns,
},
},
},
errArgs{
expectPass: true,
contains: "",
},
},
{
"valid: multiple stablecoin deposits, multiple stablecoin borrows",
args{
borrower: borrower,
keeper: keeper,
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))),
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))),
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: oneMonthDur,
expectedTotalSuppliedCoins: sdk.NewCoins(
sdk.NewInt64Coin("dai", 1000000000),
sdk.NewInt64Coin("usdc", 1000000001),
sdk.NewInt64Coin("usdt", 1000482503),
sdk.NewInt64Coin("usdx", 1000463500),
),
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))),
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: []auctiontypes.Auction{
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 1,
Initiator: "hard",
Lot: sdk.NewInt64Coin("dai", 263894126),
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("usdt", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("usdt", 250507897),
LotReturns: lotReturns,
},
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 2,
Initiator: "hard",
Lot: sdk.NewInt64Coin("dai", 68605874),
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("usdx", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("usdx", 65125788),
LotReturns: lotReturns,
},
&auctiontypes.CollateralAuction{
BaseAuction: auctiontypes.BaseAuction{
ID: 3,
Initiator: "hard",
Lot: sdk.NewInt64Coin("usdc", 189999999),
Bidder: sdk.AccAddress(nil),
Bid: sdk.NewInt64Coin("usdx", 0),
HasReceivedBids: false,
EndTime: endTime,
MaxEndTime: endTime,
},
CorrespondingDebt: sdk.NewInt64Coin("debt", 0),
MaxBid: sdk.NewInt64Coin("usdx", 180362106),
LotReturns: lotReturns,
},
},
},
errArgs{
expectPass: true,
contains: "",
},
},
{
"invalid: borrow not liquidatable",
args{
borrower: borrower,
keeper: keeper,
keeperRewardPercent: sdk.MustNewDecFromStr("0.05"),
initialModuleCoins: 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))),
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: oneMonthDur,
expectedTotalSuppliedCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(120001624))),
expectedTotalBorrowedCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(5001709))),
expectedKeeperCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100.5*KAVA_CF))),
expectedBorrowerCoins: sdk.NewCoins(),
expectedAuctions: []auctiontypes.Auction{},
},
errArgs{
expectPass: false,
contains: "borrow not liquidatable",
},
},
}
for _, tc := range testCases {
suite.Run(tc.name, func() {
// Initialize test app and set context
tApp := app.NewTestApp()
ctx := tApp.NewContext(true, tmproto.Header{Height: 1, Time: time.Date(1998, 1, 1, 0, 0, 0, 0, time.UTC)})
// account which will deposit "initial module account coins"
depositor := sdk.AccAddress(crypto.AddressHash([]byte("testdepositor")))
// Auth module genesis state
authGS := app.NewFundedGenStateWithCoins(
tApp.AppCodec(),
[]sdk.Coins{
tc.args.initialBorrowerCoins,
tc.args.initialKeeperCoins,
tc.args.initialModuleCoins,
},
[]sdk.AccAddress{
tc.args.borrower,
tc.args.keeper,
depositor,
},
)
// Hard module genesis state
hardGS := types.NewGenesisState(types.NewParams(
types.MoneyMarkets{
types.NewMoneyMarket("usdx",
types.NewBorrowLimit(false, sdk.NewDec(100000000*KAVA_CF), sdk.MustNewDecFromStr("0.9")), // Borrow Limit
"usdx:usd", // Market ID
sdk.NewInt(KAVA_CF), // Conversion Factor
model, // Interest Rate Model
reserveFactor, // Reserve Factor
tc.args.keeperRewardPercent), // Keeper Reward Percent
types.NewMoneyMarket("usdt",
types.NewBorrowLimit(false, sdk.NewDec(100000000*KAVA_CF), sdk.MustNewDecFromStr("0.9")), // Borrow Limit
"usdt:usd", // Market ID
sdk.NewInt(KAVA_CF), // Conversion Factor
model, // Interest Rate Model
reserveFactor, // Reserve Factor
tc.args.keeperRewardPercent), // Keeper Reward Percent
types.NewMoneyMarket("usdc",
types.NewBorrowLimit(false, sdk.NewDec(100000000*KAVA_CF), sdk.MustNewDecFromStr("0.9")), // Borrow Limit
"usdc:usd", // Market ID
sdk.NewInt(KAVA_CF), // Conversion Factor
model, // Interest Rate Model
reserveFactor, // Reserve Factor
tc.args.keeperRewardPercent), // Keeper Reward Percent
types.NewMoneyMarket("dai",
types.NewBorrowLimit(false, sdk.NewDec(100000000*KAVA_CF), sdk.MustNewDecFromStr("0.9")), // Borrow Limit
"dai:usd", // Market ID
sdk.NewInt(KAVA_CF), // Conversion Factor
model, // Interest Rate Model
reserveFactor, // Reserve Factor
tc.args.keeperRewardPercent), // Keeper Reward Percent
types.NewMoneyMarket("ukava",
types.NewBorrowLimit(false, sdk.NewDec(100000000*KAVA_CF), sdk.MustNewDecFromStr("0.8")), // Borrow Limit
"kava:usd", // Market ID
sdk.NewInt(KAVA_CF), // Conversion Factor
model, // Interest Rate Model
reserveFactor, // Reserve Factor
tc.args.keeperRewardPercent), // Keeper Reward Percent
types.NewMoneyMarket("bnb",
types.NewBorrowLimit(false, sdk.NewDec(100000000*BNB_CF), sdk.MustNewDecFromStr("0.8")), // Borrow Limit
"bnb:usd", // Market ID
sdk.NewInt(BNB_CF), // Conversion Factor
model, // Interest Rate Model
reserveFactor, // Reserve Factor
tc.args.keeperRewardPercent), // Keeper Reward Percent
types.NewMoneyMarket("btc",
types.NewBorrowLimit(false, sdk.NewDec(100000000*BTCB_CF), sdk.MustNewDecFromStr("0.8")), // Borrow Limit
"btc:usd", // Market ID
sdk.NewInt(BTCB_CF), // Conversion Factor
model, // Interest Rate Model
reserveFactor, // Reserve Factor
tc.args.keeperRewardPercent), // Keeper Reward Percent
},
sdk.NewDec(10),
), types.DefaultAccumulationTimes, types.DefaultDeposits, types.DefaultBorrows,
types.DefaultTotalSupplied, types.DefaultTotalBorrowed, types.DefaultTotalReserves,
)
// Pricefeed module genesis state
pricefeedGS := pricefeedtypes.GenesisState{
Params: pricefeedtypes.Params{
Markets: []pricefeedtypes.Market{
{MarketID: "usdx:usd", BaseAsset: "usdx", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true},
{MarketID: "usdt:usd", BaseAsset: "usdt", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true},
{MarketID: "usdc:usd", BaseAsset: "usdc", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true},
{MarketID: "dai:usd", BaseAsset: "dai", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true},
{MarketID: "kava:usd", BaseAsset: "kava", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true},
{MarketID: "bnb:usd", BaseAsset: "bnb", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true},
{MarketID: "btc:usd", BaseAsset: "btc", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true},
},
},
PostedPrices: []pricefeedtypes.PostedPrice{
{
MarketID: "usdx:usd",
OracleAddress: sdk.AccAddress{},
Price: sdk.MustNewDecFromStr("1.00"),
Expiry: time.Now().Add(100 * time.Hour),
},
{
MarketID: "usdt:usd",
OracleAddress: sdk.AccAddress{},
Price: sdk.MustNewDecFromStr("1.00"),
Expiry: time.Now().Add(100 * time.Hour),
},
{
MarketID: "usdc:usd",
OracleAddress: sdk.AccAddress{},
Price: sdk.MustNewDecFromStr("1.00"),
Expiry: time.Now().Add(100 * time.Hour),
},
{
MarketID: "dai:usd",
OracleAddress: sdk.AccAddress{},
Price: sdk.MustNewDecFromStr("1.00"),
Expiry: time.Now().Add(100 * time.Hour),
},
{
MarketID: "kava:usd",
OracleAddress: sdk.AccAddress{},
Price: sdk.MustNewDecFromStr("2.00"),
Expiry: time.Now().Add(100 * time.Hour),
},
{
MarketID: "bnb:usd",
OracleAddress: sdk.AccAddress{},
Price: sdk.MustNewDecFromStr("10.00"),
Expiry: time.Now().Add(100 * time.Hour),
},
{
MarketID: "btc:usd",
OracleAddress: sdk.AccAddress{},
Price: sdk.MustNewDecFromStr("100.00"),
Expiry: time.Now().Add(100 * time.Hour),
},
},
}
// Initialize test application
tApp.InitializeFromGenesisStates(authGS,
app.GenesisState{pricefeedtypes.ModuleName: tApp.AppCodec().MustMarshalJSON(&pricefeedGS)},
app.GenesisState{types.ModuleName: tApp.AppCodec().MustMarshalJSON(&hardGS)})
keeper := tApp.GetHardKeeper()
suite.app = tApp
suite.ctx = ctx
suite.keeper = keeper
suite.auctionKeeper = tApp.GetAuctionKeeper()
var err error
// Run begin blocker to set up state
hard.BeginBlocker(suite.ctx, suite.keeper)
// Deposit initial module account coins
err = suite.keeper.Deposit(suite.ctx, depositor, tc.args.initialModuleCoins)
suite.Require().NoError(err)
// Deposit coins
err = suite.keeper.Deposit(suite.ctx, tc.args.borrower, tc.args.depositCoins)
suite.Require().NoError(err)
// Borrow coins
err = suite.keeper.Borrow(suite.ctx, tc.args.borrower, tc.args.borrowCoins)
suite.Require().NoError(err)
// Set up liquidation chain context and run begin blocker
runAtTime := suite.ctx.BlockTime().Add(tc.args.liquidateAfter)
liqCtx := suite.ctx.WithBlockTime(runAtTime)
hard.BeginBlocker(liqCtx, suite.keeper)
// Check borrow exists before liquidation
_, foundBorrowBefore := suite.keeper.GetBorrow(liqCtx, tc.args.borrower)
suite.Require().True(foundBorrowBefore)
// Check that the user's deposit exists before liquidation
_, 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 {
suite.Require().NoError(err)
// Check borrow does not exist after liquidation
_, foundBorrowAfter := suite.keeper.GetBorrow(liqCtx, tc.args.borrower)
suite.Require().False(foundBorrowAfter)
// Check deposits do not exist after liquidation
_, foundDepositAfter := suite.keeper.GetDeposit(liqCtx, tc.args.borrower)
suite.Require().False(foundDepositAfter)
// Check that the keeper's balance increased by reward % of all the borrowed coins
accKeeper := suite.getAccountAtCtx(tc.args.keeper, liqCtx)
suite.Require().Equal(tc.args.expectedKeeperCoins, suite.getAccountCoins(accKeeper))
// Check that borrower's balance contains the expected coins
accBorrower := suite.getAccountAtCtx(tc.args.borrower, liqCtx)
suite.Require().Equal(tc.args.expectedBorrowerCoins, suite.getAccountCoins(accBorrower))
// Check that the expected auctions have been created
auctions := suite.auctionKeeper.GetAllAuctions(liqCtx)
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(tc.args.expectedTotalSuppliedCoins, suppliedCoinsPost)
borrowedCoinsPost, _ := suite.keeper.GetBorrowedCoins(liqCtx)
suite.Require().True(tc.args.expectedTotalBorrowedCoins.IsEqual(borrowedCoinsPost))
} else {
suite.Require().Error(err)
suite.Require().True(strings.Contains(err.Error(), tc.errArgs.contains))
// Check that the user's borrow exists
_, foundBorrowAfter := suite.keeper.GetBorrow(liqCtx, tc.args.borrower)
suite.Require().True(foundBorrowAfter)
// Check that the user's deposits exist
_, foundDepositAfter := suite.keeper.GetDeposit(liqCtx, tc.args.borrower)
suite.Require().True(foundDepositAfter)
// Check that no auctions have been created
auctions := suite.auctionKeeper.GetAllAuctions(liqCtx)
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().True(tc.args.expectedTotalBorrowedCoins.IsEqual(borrowedCoinsPre))
}
})
}
}