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1d36429fe3
0g-chain/x/hard/keeper/repay_test.go
drklee3 3375484f79
Update deprecated Cosmos methods (#1530) 
* Use cosmossdk.io/errors for deprecated error methods

* Update error registration with cosmossdk.io/errors

* Use cosmossdk.io/math for deprecated sdk.Int alias

* Fix modified proto file

* Update sdk.Int usage in swap hooks

* Update e2e test deprecated method usage
2023-04-05 16:21:59 -07:00

367 lines
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package keeper_test
import (
"time"
sdkmath "cosmossdk.io/math"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/tendermint/tendermint/crypto"
tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
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"
pricefeedtypes "github.com/kava-labs/kava/x/pricefeed/types"
)
func (suite *KeeperTestSuite) TestRepay() {
type args struct {
borrower sdk.AccAddress
repayer sdk.AccAddress
initialBorrowerCoins sdk.Coins
initialRepayerCoins sdk.Coins
initialModuleCoins sdk.Coins
depositCoins []sdk.Coin
borrowCoins sdk.Coins
repayCoins sdk.Coins
}
type errArgs struct {
expectPass bool
expectDelete bool
contains string
}
type borrowTest struct {
name string
args args
errArgs errArgs
}
model := types.NewInterestRateModel(sdk.MustNewDecFromStr("0.05"), sdk.MustNewDecFromStr("2"), sdk.MustNewDecFromStr("0.8"), sdk.MustNewDecFromStr("10"))
testCases := []borrowTest{
{
"valid: partial repay",
args{
borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
repayer: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
initialRepayerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdx", sdkmath.NewInt(1000*USDX_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(50*KAVA_CF))),
repayCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(10*KAVA_CF))),
},
errArgs{
expectPass: true,
expectDelete: false,
contains: "",
},
},
{
"valid: partial repay by non borrower",
args{
borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
repayer: sdk.AccAddress(crypto.AddressHash([]byte("repayer"))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
initialRepayerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdx", sdkmath.NewInt(1000*USDX_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(50*KAVA_CF))),
repayCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(10*KAVA_CF))),
},
errArgs{
expectPass: true,
expectDelete: false,
contains: "",
},
},
{
"valid: repay in full",
args{
borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
repayer: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
initialRepayerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdx", sdkmath.NewInt(1000*USDX_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(50*KAVA_CF))),
repayCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(50*KAVA_CF))),
},
errArgs{
expectPass: true,
expectDelete: true,
contains: "",
},
},
{
"valid: overpayment is adjusted",
args{
borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
repayer: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
initialRepayerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdx", sdkmath.NewInt(1000*USDX_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(80*KAVA_CF))), // Deposit less so user still has some KAVA
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(50*KAVA_CF))),
repayCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(60*KAVA_CF))), // Exceeds borrowed coins but not user's balance
},
errArgs{
expectPass: true,
expectDelete: true,
contains: "",
},
},
{
"invalid: attempt to repay non-supplied coin",
args{
borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
repayer: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
initialRepayerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdx", sdkmath.NewInt(1000*USDX_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(50*KAVA_CF))),
repayCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(10*KAVA_CF)), sdk.NewCoin("bnb", sdkmath.NewInt(10*KAVA_CF))),
},
errArgs{
expectPass: false,
expectDelete: false,
contains: "no coins of this type borrowed",
},
},
{
"invalid: insufficient balance for repay",
args{
borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
repayer: sdk.AccAddress(crypto.AddressHash([]byte("repayer"))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
initialRepayerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(49*KAVA_CF))),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdx", sdkmath.NewInt(1000*USDX_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(50*KAVA_CF))),
repayCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(50*KAVA_CF))), // Exceeds repayer's balance, but not borrow amount
},
errArgs{
expectPass: false,
expectDelete: false,
contains: "account can only repay up to 49000000ukava",
},
},
{
"invalid: repaying a single coin type results in borrow position below the minimum USD value",
args{
borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
repayer: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(100*USDX_CF))),
initialRepayerCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(100*USDX_CF))),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdx", sdkmath.NewInt(1000*USDX_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(100*USDX_CF))),
borrowCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(50*USDX_CF))),
repayCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(45*USDX_CF))),
},
errArgs{
expectPass: false,
expectDelete: false,
contains: "proposed borrow's USD value $5.000000000000000000 is below the minimum borrow limit",
},
},
{
"invalid: repaying multiple coin types results in borrow position below the minimum USD value",
args{
borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
repayer: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(100*USDX_CF))),
initialRepayerCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(100*USDX_CF)), sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdx", sdkmath.NewInt(1000*USDX_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(100*USDX_CF))),
borrowCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(50*USDX_CF)), sdk.NewCoin("ukava", sdkmath.NewInt(10*KAVA_CF))), // (50*$1)+(10*$2) = $70
repayCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(45*USDX_CF)), sdk.NewCoin("ukava", sdkmath.NewInt(8*KAVA_CF))), // (45*$1)+(8*$2) = $61
},
errArgs{
expectPass: false,
expectDelete: false,
contains: "proposed borrow's USD value $9.000000000000000000 is below the minimum borrow limit",
},
},
{
"invalid: overpaying multiple coin types results in borrow position below the minimum USD value",
args{
borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
repayer: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(100*USDX_CF))),
initialRepayerCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(100*USDX_CF)), sdk.NewCoin("ukava", sdkmath.NewInt(100*KAVA_CF))),
initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdkmath.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdx", sdkmath.NewInt(1000*USDX_CF))),
depositCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(100*USDX_CF))),
borrowCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(50*USDX_CF)), sdk.NewCoin("ukava", sdkmath.NewInt(10*KAVA_CF))), // (50*$1)+(10*$2) = $70
repayCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdkmath.NewInt(500*USDX_CF)), sdk.NewCoin("ukava", sdkmath.NewInt(8*KAVA_CF))), // (500*$1)+(8*$2) = $516, or capping to borrowed amount, (50*$1)+(8*$2) = $66
},
errArgs{
expectPass: false,
expectDelete: false,
contains: "proposed borrow's USD value $4.000000000000000000 is below the minimum borrow limit",
},
},
}
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: tmtime.Now()})
// Auth module genesis state
addrs, coinses := uniqueAddressCoins(
[]sdk.AccAddress{tc.args.borrower, tc.args.repayer},
[]sdk.Coins{tc.args.initialBorrowerCoins, tc.args.initialRepayerCoins},
)
authGS := app.NewFundedGenStateWithCoins(
tApp.AppCodec(),
coinses,
addrs,
)
// Hard module genesis state
hardGS := types.NewGenesisState(types.NewParams(
types.MoneyMarkets{
types.NewMoneyMarket("usdx",
types.NewBorrowLimit(false, sdk.NewDec(100000000*USDX_CF), sdk.MustNewDecFromStr("1")), // Borrow Limit
"usdx:usd", // Market ID
sdkmath.NewInt(USDX_CF), // Conversion Factor
model, // Interest Rate Model
sdk.MustNewDecFromStr("0.05"), // Reserve Factor
sdk.MustNewDecFromStr("0.05")), // Keeper Reward Percent
types.NewMoneyMarket("ukava",
types.NewBorrowLimit(false, sdk.NewDec(100000000*KAVA_CF), sdk.MustNewDecFromStr("0.8")), // Borrow Limit
"kava:usd", // Market ID
sdkmath.NewInt(KAVA_CF), // Conversion Factor
model, // Interest Rate Model
sdk.MustNewDecFromStr("0.05"), // Reserve Factor
sdk.MustNewDecFromStr("0.05")), // 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: "kava:usd", BaseAsset: "kava", 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(1 * time.Hour),
},
{
MarketID: "kava:usd",
OracleAddress: sdk.AccAddress{},
Price: sdk.MustNewDecFromStr("2.00"),
Expiry: time.Now().Add(1 * time.Hour),
},
},
}
// Initialize test application
tApp.InitializeFromGenesisStates(authGS,
app.GenesisState{pricefeedtypes.ModuleName: tApp.AppCodec().MustMarshalJSON(&pricefeedGS)},
app.GenesisState{types.ModuleName: tApp.AppCodec().MustMarshalJSON(&hardGS)},
)
// Mint coins to Hard module account
bankKeeper := tApp.GetBankKeeper()
err := bankKeeper.MintCoins(ctx, types.ModuleAccountName, tc.args.initialModuleCoins)
suite.Require().NoError(err)
suite.app = tApp
suite.ctx = ctx
suite.keeper = tApp.GetHardKeeper()
// Run BeginBlocker once to transition MoneyMarkets
hard.BeginBlocker(suite.ctx, suite.keeper)
// Deposit coins to hard
err = suite.keeper.Deposit(suite.ctx, tc.args.borrower, tc.args.depositCoins)
suite.Require().NoError(err)
// Borrow coins from hard
err = suite.keeper.Borrow(suite.ctx, tc.args.borrower, tc.args.borrowCoins)
suite.Require().NoError(err)
repayerAcc := suite.getAccount(tc.args.repayer)
previousRepayerCoins := bankKeeper.GetAllBalances(suite.ctx, repayerAcc.GetAddress())
err = suite.keeper.Repay(suite.ctx, tc.args.repayer, tc.args.borrower, tc.args.repayCoins)
if tc.errArgs.expectPass {
suite.Require().NoError(err)
// If we overpaid expect an adjustment
repaymentCoins, err := suite.keeper.CalculatePaymentAmount(tc.args.borrowCoins, tc.args.repayCoins)
suite.Require().NoError(err)
// Check repayer balance
expectedRepayerCoins := previousRepayerCoins.Sub(repaymentCoins...)
acc := suite.getAccount(tc.args.repayer)
// use IsEqual for sdk.Coins{nil} vs sdk.Coins{}
suite.Require().True(expectedRepayerCoins.IsEqual(bankKeeper.GetAllBalances(suite.ctx, acc.GetAddress())))
// Check module account balance
expectedModuleCoins := tc.args.initialModuleCoins.Add(tc.args.depositCoins...).Sub(tc.args.borrowCoins...).Add(repaymentCoins...)
mAcc := suite.getModuleAccount(types.ModuleAccountName)
suite.Require().Equal(expectedModuleCoins, bankKeeper.GetAllBalances(suite.ctx, mAcc.GetAddress()))
// Check user's borrow object
borrow, foundBorrow := suite.keeper.GetBorrow(suite.ctx, tc.args.borrower)
expectedBorrowCoins := tc.args.borrowCoins.Sub(repaymentCoins...)
if tc.errArgs.expectDelete {
suite.Require().False(foundBorrow)
} else {
suite.Require().True(foundBorrow)
suite.Require().Equal(expectedBorrowCoins, borrow.Amount)
}
} else {
suite.Require().Error(err)
suite.Require().Contains(err.Error(), tc.errArgs.contains)
// Check repayer balance (no repay coins)
acc := suite.getAccount(tc.args.repayer)
suite.Require().Equal(previousRepayerCoins, bankKeeper.GetAllBalances(suite.ctx, acc.GetAddress()))
// Check module account balance (no repay coins)
expectedModuleCoins := tc.args.initialModuleCoins.Add(tc.args.depositCoins...).Sub(tc.args.borrowCoins...)
mAcc := suite.getModuleAccount(types.ModuleAccountName)
suite.Require().Equal(expectedModuleCoins, bankKeeper.GetAllBalances(suite.ctx, mAcc.GetAddress()))
// Check user's borrow object (no repay coins)
borrow, foundBorrow := suite.keeper.GetBorrow(suite.ctx, tc.args.borrower)
suite.Require().True(foundBorrow)
suite.Require().Equal(tc.args.borrowCoins, borrow.Amount)
}
})
}
}
// uniqueAddressCoins removes duplicate addresses, and the corresponding elements in a list of coins.
func uniqueAddressCoins(addresses []sdk.AccAddress, coinses []sdk.Coins) ([]sdk.AccAddress, []sdk.Coins) {
uniqueAddresses := []sdk.AccAddress{}
filteredCoins := []sdk.Coins{}
addrMap := map[string]bool{}
for i, a := range addresses {
if !addrMap[a.String()] {
uniqueAddresses = append(uniqueAddresses, a)
filteredCoins = append(filteredCoins, coinses[i])
}
addrMap[a.String()] = true
}
return uniqueAddresses, filteredCoins
}
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