0g-chain/x/harvest/keeper/borrow_test.go
Denali Marsh cfb1905ad3
Harvest: borrows capped by utilization (#714)
* wrap error borrow exceeds mod acc balance

* address revisions
2020-11-11 16:05:17 +01:00

356 lines
18 KiB
Go

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/harvest/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 {
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{
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{
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: "total deposited value is insufficient for borrow request",
},
},
{
"valid: multiple deposits",
args{
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.Coin{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{
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.Coin{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: "total deposited value is insufficient for borrow request",
},
},
{
"valid: multiple previous borrows",
args{
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.Coin{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{
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.Coin{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: "requested borrow 1000000usdx is greater than maximum valid borrow",
},
},
{
"invalid: no price for asset",
args{
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("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{
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.Coin{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:",
},
},
}
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)))})
// Harvest module genesis state
harvestGS := types.NewGenesisState(types.NewParams(
true,
types.DistributionSchedules{
types.NewDistributionSchedule(true, "usdx", time.Date(2020, 10, 8, 14, 0, 0, 0, time.UTC), time.Date(2020, 11, 22, 14, 0, 0, 0, time.UTC), sdk.NewCoin("hard", sdk.NewInt(5000)), time.Date(2021, 11, 22, 14, 0, 0, 0, time.UTC), types.Multipliers{types.NewMultiplier(types.Small, 0, sdk.MustNewDecFromStr("0.33")), types.NewMultiplier(types.Medium, 6, sdk.MustNewDecFromStr("0.5")), types.NewMultiplier(types.Medium, 24, sdk.OneDec())}),
types.NewDistributionSchedule(true, "ukava", time.Date(2020, 10, 8, 14, 0, 0, 0, time.UTC), time.Date(2020, 11, 22, 14, 0, 0, 0, time.UTC), sdk.NewCoin("hard", sdk.NewInt(5000)), time.Date(2021, 11, 22, 14, 0, 0, 0, time.UTC), types.Multipliers{types.NewMultiplier(types.Small, 0, sdk.MustNewDecFromStr("0.33")), types.NewMultiplier(types.Medium, 6, sdk.MustNewDecFromStr("0.5")), types.NewMultiplier(types.Medium, 24, sdk.OneDec())}),
types.NewDistributionSchedule(true, "btcb", time.Date(2020, 10, 8, 14, 0, 0, 0, time.UTC), time.Date(2020, 11, 22, 14, 0, 0, 0, time.UTC), sdk.NewCoin("hard", sdk.NewInt(5000)), time.Date(2021, 11, 22, 14, 0, 0, 0, time.UTC), types.Multipliers{types.NewMultiplier(types.Small, 0, sdk.MustNewDecFromStr("0.33")), types.NewMultiplier(types.Medium, 6, sdk.MustNewDecFromStr("0.5")), types.NewMultiplier(types.Medium, 24, sdk.OneDec())}),
types.NewDistributionSchedule(true, "busd", time.Date(2020, 10, 8, 14, 0, 0, 0, time.UTC), time.Date(2020, 11, 22, 14, 0, 0, 0, time.UTC), sdk.NewCoin("hard", sdk.NewInt(5000)), time.Date(2021, 11, 22, 14, 0, 0, 0, time.UTC), types.Multipliers{types.NewMultiplier(types.Small, 0, sdk.MustNewDecFromStr("0.33")), types.NewMultiplier(types.Medium, 6, sdk.MustNewDecFromStr("0.5")), types.NewMultiplier(types.Medium, 24, sdk.OneDec())}),
types.NewDistributionSchedule(true, "bnb", time.Date(2020, 10, 8, 14, 0, 0, 0, time.UTC), time.Date(2020, 11, 22, 14, 0, 0, 0, time.UTC), sdk.NewCoin("hard", sdk.NewInt(5000)), time.Date(2021, 11, 22, 14, 0, 0, 0, time.UTC), types.Multipliers{types.NewMultiplier(types.Small, 0, sdk.MustNewDecFromStr("0.33")), types.NewMultiplier(types.Medium, 6, sdk.MustNewDecFromStr("0.5")), types.NewMultiplier(types.Medium, 24, sdk.OneDec())}),
types.NewDistributionSchedule(true, "xyz", time.Date(2020, 10, 8, 14, 0, 0, 0, time.UTC), time.Date(2020, 11, 22, 14, 0, 0, 0, time.UTC), sdk.NewCoin("hard", sdk.NewInt(5000)), time.Date(2021, 11, 22, 14, 0, 0, 0, time.UTC), types.Multipliers{types.NewMultiplier(types.Small, 0, sdk.MustNewDecFromStr("0.33")), types.NewMultiplier(types.Medium, 6, sdk.MustNewDecFromStr("0.5")), types.NewMultiplier(types.Medium, 24, sdk.OneDec())}),
},
types.DelegatorDistributionSchedules{types.NewDelegatorDistributionSchedule(
types.NewDistributionSchedule(true, "usdx", time.Date(2020, 10, 8, 14, 0, 0, 0, time.UTC), time.Date(2025, 10, 8, 14, 0, 0, 0, time.UTC), sdk.NewCoin("hard", sdk.NewInt(500)), time.Date(2026, 10, 8, 14, 0, 0, 0, time.UTC), types.Multipliers{types.NewMultiplier(types.Small, 0, sdk.MustNewDecFromStr("0.33")), types.NewMultiplier(types.Medium, 6, sdk.MustNewDecFromStr("0.5")), types.NewMultiplier(types.Medium, 24, sdk.OneDec())}),
time.Hour*24,
),
},
types.MoneyMarkets{
types.NewMoneyMarket("usdx", sdk.NewInt(100000000*USDX_CF), sdk.MustNewDecFromStr("1"), "usdx:usd", sdk.NewInt(USDX_CF)),
types.NewMoneyMarket("busd", sdk.NewInt(100000000*BUSD_CF), sdk.MustNewDecFromStr("1"), "busd:usd", sdk.NewInt(BUSD_CF)),
types.NewMoneyMarket("ukava", sdk.NewInt(100000000*KAVA_CF), tc.args.loanToValueKAVA, "kava:usd", sdk.NewInt(KAVA_CF)),
types.NewMoneyMarket("btcb", sdk.NewInt(100000000*BTCB_CF), tc.args.loanToValueBTCB, "btcb:usd", sdk.NewInt(BTCB_CF)),
types.NewMoneyMarket("bnb", sdk.NewInt(100000000*BNB_CF), tc.args.loanToValueBNB, "bnb:usd", sdk.NewInt(BNB_CF)),
types.NewMoneyMarket("xyz", sdk.NewInt(1), tc.args.loanToValueBNB, "xyz:usd", sdk.NewInt(1)),
},
), types.DefaultPreviousBlockTime, types.DefaultDistributionTimes)
// 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(harvestGS)})
// Mint coins to Harvest module account
supplyKeeper := tApp.GetSupplyKeeper()
harvestMaccCoins := 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, harvestMaccCoins)
keeper := tApp.GetHarvestKeeper()
suite.app = tApp
suite.ctx = ctx
suite.keeper = keeper
var err error
// Deposit coins to harvest
depositedCoins := sdk.NewCoins()
for _, depositCoin := range tc.args.depositCoins {
err = suite.keeper.Deposit(suite.ctx, tc.args.borrower, depositCoin, types.LP)
suite.Require().NoError(err)
depositedCoins.Add(depositCoin)
}
// Execute user's previous borrows
err = suite.keeper.Borrow(suite.ctx, tc.args.borrower, tc.args.previousBorrowCoins)
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.Sub(depositedCoins), acc.GetCoins())
// Check module account balance
mAcc := suite.getModuleAccount(types.ModuleAccountName)
suite.Require().Equal(tc.args.expectedModAccountBalance.Add(depositedCoins...), 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))
}
})
}
}