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243 lines
10 KiB
Go
243 lines
10 KiB
Go
package keeper_test
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import (
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"strings"
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"time"
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sdk "github.com/cosmos/cosmos-sdk/types"
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abci "github.com/tendermint/tendermint/abci/types"
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"github.com/tendermint/tendermint/crypto"
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tmtime "github.com/tendermint/tendermint/types/time"
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"github.com/kava-labs/kava/app"
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"github.com/kava-labs/kava/x/harvest"
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"github.com/kava-labs/kava/x/harvest/types"
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"github.com/kava-labs/kava/x/pricefeed"
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)
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func (suite *KeeperTestSuite) TestRepay() {
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type args struct {
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borrower sdk.AccAddress
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initialBorrowerCoins sdk.Coins
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initialModuleCoins sdk.Coins
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depositCoins []sdk.Coin
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borrowCoins sdk.Coins
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repayCoins sdk.Coins
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expectedAccountBalance sdk.Coins
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expectedModAccountBalance sdk.Coins
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}
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type errArgs struct {
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expectPass bool
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contains string
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}
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type borrowTest struct {
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name string
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args args
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errArgs errArgs
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}
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model := types.NewInterestRateModel(sdk.MustNewDecFromStr("0.05"), sdk.MustNewDecFromStr("2"), sdk.MustNewDecFromStr("0.8"), sdk.MustNewDecFromStr("10"))
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testCases := []borrowTest{
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{
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"valid: partial repay",
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args{
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borrower: sdk.AccAddress(crypto.AddressHash([]byte("test"))),
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initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
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initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(1000*USDX_CF))),
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depositCoins: []sdk.Coin{sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))},
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borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF))),
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repayCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(10*KAVA_CF))),
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},
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errArgs{
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expectPass: true,
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contains: "",
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},
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},
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{
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"valid: repay in full",
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args{
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borrower: sdk.AccAddress(crypto.AddressHash([]byte("test"))),
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initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
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initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(1000*USDX_CF))),
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depositCoins: []sdk.Coin{sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))},
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borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF))),
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repayCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF))),
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},
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errArgs{
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expectPass: true,
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contains: "",
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},
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},
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{
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"valid: overpayment is adjusted",
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args{
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borrower: sdk.AccAddress(crypto.AddressHash([]byte("test"))),
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initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
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initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(1000*USDX_CF))),
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depositCoins: []sdk.Coin{sdk.NewCoin("ukava", sdk.NewInt(80*KAVA_CF))}, // Deposit less so user still has some KAVA
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borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF))),
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repayCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(60*KAVA_CF))), // Exceeds borrowed coins but not user's balance
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},
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errArgs{
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expectPass: true,
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contains: "",
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},
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},
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{
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"invalid: insufficent balance for repay",
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args{
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borrower: sdk.AccAddress(crypto.AddressHash([]byte("test"))),
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initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
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initialModuleCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1000*KAVA_CF)), sdk.NewCoin("usdx", sdk.NewInt(1000*USDX_CF))),
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depositCoins: []sdk.Coin{sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))},
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borrowCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(50*KAVA_CF))),
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repayCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(51*KAVA_CF))), // Exceeds user's KAVA balance
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},
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errArgs{
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expectPass: false,
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contains: "account can only repay up to",
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},
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},
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}
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for _, tc := range testCases {
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suite.Run(tc.name, func() {
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// Initialize test app and set context
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tApp := app.NewTestApp()
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ctx := tApp.NewContext(true, abci.Header{Height: 1, Time: tmtime.Now()})
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// Auth module genesis state
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authGS := app.NewAuthGenState(
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[]sdk.AccAddress{tc.args.borrower},
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[]sdk.Coins{tc.args.initialBorrowerCoins})
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// Harvest module genesis state
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harvestGS := types.NewGenesisState(types.NewParams(
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true,
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types.DistributionSchedules{
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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())}),
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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())}),
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},
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types.DelegatorDistributionSchedules{types.NewDelegatorDistributionSchedule(
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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())}),
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time.Hour*24,
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),
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},
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types.MoneyMarkets{
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types.NewMoneyMarket("usdx",
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types.NewBorrowLimit(false, sdk.NewDec(100000000*USDX_CF), sdk.MustNewDecFromStr("1")), // Borrow Limit
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"usdx:usd", // Market ID
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sdk.NewInt(USDX_CF), // Conversion Factor
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sdk.NewInt(1000*USDX_CF), // Auction Size
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model, // Interest Rate Model
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sdk.MustNewDecFromStr("0.05"), // Reserve Factor
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sdk.MustNewDecFromStr("0.05")), // Keeper Reward Percent
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types.NewMoneyMarket("ukava",
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types.NewBorrowLimit(false, sdk.NewDec(100000000*KAVA_CF), sdk.MustNewDecFromStr("0.8")), // Borrow Limit
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"kava:usd", // Market ID
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sdk.NewInt(KAVA_CF), // Conversion Factor
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sdk.NewInt(1000*KAVA_CF), // Auction Size
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model, // Interest Rate Model
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sdk.MustNewDecFromStr("0.05"), // Reserve Factor
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sdk.MustNewDecFromStr("0.05")), // Keeper Reward Percent
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},
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0, // LTV counter
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), types.DefaultPreviousBlockTime, types.DefaultDistributionTimes)
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// Pricefeed module genesis state
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pricefeedGS := pricefeed.GenesisState{
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Params: pricefeed.Params{
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Markets: []pricefeed.Market{
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{MarketID: "usdx:usd", BaseAsset: "usdx", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true},
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{MarketID: "kava:usd", BaseAsset: "kava", QuoteAsset: "usd", Oracles: []sdk.AccAddress{}, Active: true},
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},
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},
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PostedPrices: []pricefeed.PostedPrice{
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{
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MarketID: "usdx:usd",
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OracleAddress: sdk.AccAddress{},
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Price: sdk.MustNewDecFromStr("1.00"),
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Expiry: time.Now().Add(1 * time.Hour),
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},
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{
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MarketID: "kava:usd",
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OracleAddress: sdk.AccAddress{},
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Price: sdk.MustNewDecFromStr("2.00"),
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Expiry: time.Now().Add(1 * time.Hour),
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},
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},
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}
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// Initialize test application
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tApp.InitializeFromGenesisStates(authGS,
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app.GenesisState{pricefeed.ModuleName: pricefeed.ModuleCdc.MustMarshalJSON(pricefeedGS)},
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app.GenesisState{types.ModuleName: types.ModuleCdc.MustMarshalJSON(harvestGS)},
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)
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// Mint coins to Harvest module account
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supplyKeeper := tApp.GetSupplyKeeper()
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supplyKeeper.MintCoins(ctx, types.ModuleAccountName, tc.args.initialModuleCoins)
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keeper := tApp.GetHarvestKeeper()
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suite.app = tApp
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suite.ctx = ctx
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suite.keeper = keeper
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var err error
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// Run BeginBlocker once to transition MoneyMarkets
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harvest.BeginBlocker(suite.ctx, suite.keeper)
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// Deposit coins to harvest
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err = suite.keeper.Deposit(suite.ctx, tc.args.borrower, tc.args.depositCoins)
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suite.Require().NoError(err)
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// Borrow coins from harvest
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err = suite.keeper.Borrow(suite.ctx, tc.args.borrower, tc.args.borrowCoins)
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suite.Require().NoError(err)
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err = suite.keeper.Repay(suite.ctx, tc.args.borrower, tc.args.repayCoins)
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if tc.errArgs.expectPass {
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suite.Require().NoError(err)
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// If we overpaid expect an adjustment
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repaymentCoins := suite.keeper.CalculatePaymentAmount(tc.args.borrowCoins, tc.args.repayCoins)
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// Check borrower balance
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expectedBorrowerCoins := tc.args.initialBorrowerCoins.Sub(tc.args.depositCoins).Add(tc.args.borrowCoins...).Sub(repaymentCoins)
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acc := suite.getAccount(tc.args.borrower)
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suite.Require().Equal(expectedBorrowerCoins, acc.GetCoins())
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// Check module account balance
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expectedModuleCoins := tc.args.initialModuleCoins.Add(tc.args.depositCoins...).Sub(tc.args.borrowCoins).Add(repaymentCoins...)
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mAcc := suite.getModuleAccount(types.ModuleAccountName)
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suite.Require().Equal(expectedModuleCoins, mAcc.GetCoins())
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// Check user's borrow object
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borrow, _ := suite.keeper.GetBorrow(suite.ctx, tc.args.borrower)
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expectedBorrowCoins := tc.args.borrowCoins.Sub(repaymentCoins)
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suite.Require().Equal(expectedBorrowCoins, borrow.Amount)
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} else {
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suite.Require().Error(err)
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suite.Require().True(strings.Contains(err.Error(), tc.errArgs.contains))
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// Check borrower balance (no repay coins)
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expectedBorrowerCoins := tc.args.initialBorrowerCoins.Sub(tc.args.depositCoins).Add(tc.args.borrowCoins...)
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acc := suite.getAccount(tc.args.borrower)
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suite.Require().Equal(expectedBorrowerCoins, acc.GetCoins())
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// Check module account balance (no repay coins)
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expectedModuleCoins := tc.args.initialModuleCoins.Add(tc.args.depositCoins...).Sub(tc.args.borrowCoins)
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mAcc := suite.getModuleAccount(types.ModuleAccountName)
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suite.Require().Equal(expectedModuleCoins, mAcc.GetCoins())
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// Check user's borrow object (no repay coins)
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borrow, _ := suite.keeper.GetBorrow(suite.ctx, tc.args.borrower)
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suite.Require().Equal(tc.args.borrowCoins, borrow.Amount)
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}
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})
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}
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}
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