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362 lines
16 KiB
Go
362 lines
16 KiB
Go
package keeper_test
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import (
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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/hard"
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"github.com/kava-labs/kava/x/hard/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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repayer sdk.AccAddress
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initialBorrowerCoins sdk.Coins
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initialRepayerCoins 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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}
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type errArgs struct {
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expectPass bool
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expectDelete 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("borrower"))),
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repayer: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
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initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
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initialRepayerCoins: 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.NewCoins(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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expectDelete: false,
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contains: "",
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},
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},
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{
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"valid: partial repay by non borrower",
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args{
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borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
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repayer: sdk.AccAddress(crypto.AddressHash([]byte("repayer"))),
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initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
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initialRepayerCoins: 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.NewCoins(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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expectDelete: false,
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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("borrower"))),
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repayer: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
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initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
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initialRepayerCoins: 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.NewCoins(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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expectDelete: 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("borrower"))),
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repayer: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
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initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
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initialRepayerCoins: 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.NewCoins(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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expectDelete: true,
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contains: "",
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},
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},
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{
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"invalid: attempt to repay non-supplied coin",
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args{
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borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
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repayer: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
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initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
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initialRepayerCoins: 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.NewCoins(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)), sdk.NewCoin("bnb", sdk.NewInt(10*KAVA_CF))),
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},
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errArgs{
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expectPass: false,
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expectDelete: false,
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contains: "no coins of this type borrowed",
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},
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},
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{
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"invalid: insufficient balance for repay",
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args{
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borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
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repayer: sdk.AccAddress(crypto.AddressHash([]byte("repayer"))),
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initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_CF))),
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initialRepayerCoins: sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(49*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.NewCoins(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))), // Exceeds repayer's balance, but not borrow amount
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},
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errArgs{
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expectPass: false,
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expectDelete: false,
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contains: "account can only repay up to 49000000ukava",
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},
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},
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{
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"invalid: repaying a single coin type results in borrow position below the minimum USD value",
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args{
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borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
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repayer: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
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initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(100*USDX_CF))),
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initialRepayerCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(100*USDX_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.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(100*USDX_CF))),
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borrowCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(50*USDX_CF))),
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repayCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(45*USDX_CF))),
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},
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errArgs{
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expectPass: false,
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expectDelete: false,
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contains: "proposed borrow's USD value $5.000000000000000000 is below the minimum borrow limit",
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},
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},
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{
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"invalid: repaying multiple coin types results in borrow position below the minimum USD value",
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args{
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borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
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repayer: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
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initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(100*USDX_CF))),
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initialRepayerCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(100*USDX_CF)), 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.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(100*USDX_CF))),
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borrowCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(50*USDX_CF)), sdk.NewCoin("ukava", sdk.NewInt(10*KAVA_CF))), // (50*$1)+(10*$2) = $70
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repayCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(45*USDX_CF)), sdk.NewCoin("ukava", sdk.NewInt(8*KAVA_CF))), // (45*$1)+(8*$2) = $61
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},
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errArgs{
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expectPass: false,
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expectDelete: false,
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contains: "proposed borrow's USD value $9.000000000000000000 is below the minimum borrow limit",
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},
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},
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{
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"invalid: overpaying multiple coin types results in borrow position below the minimum USD value",
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args{
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borrower: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
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repayer: sdk.AccAddress(crypto.AddressHash([]byte("borrower"))),
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initialBorrowerCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(100*USDX_CF))),
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initialRepayerCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(100*USDX_CF)), 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.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(100*USDX_CF))),
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borrowCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(50*USDX_CF)), sdk.NewCoin("ukava", sdk.NewInt(10*KAVA_CF))), // (50*$1)+(10*$2) = $70
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repayCoins: sdk.NewCoins(sdk.NewCoin("usdx", sdk.NewInt(500*USDX_CF)), sdk.NewCoin("ukava", sdk.NewInt(8*KAVA_CF))), // (500*$1)+(8*$2) = $516, or capping to borrowed amount, (50*$1)+(8*$2) = $66
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},
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errArgs{
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expectPass: false,
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expectDelete: false,
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contains: "proposed borrow's USD value $4.000000000000000000 is below the minimum borrow limit",
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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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addrs, coinses := uniqueAddressCoins(
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[]sdk.AccAddress{tc.args.borrower, tc.args.repayer},
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[]sdk.Coins{tc.args.initialBorrowerCoins, tc.args.initialRepayerCoins},
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)
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authGS := app.NewAuthGenState(addrs, coinses)
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// Hard module genesis state
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hardGS := types.NewGenesisState(types.NewParams(
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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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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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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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sdk.NewDec(10),
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), types.DefaultAccumulationTimes, types.DefaultDeposits, types.DefaultBorrows,
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types.DefaultTotalSupplied, types.DefaultTotalBorrowed, types.DefaultTotalReserves,
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)
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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(hardGS)},
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)
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// Mint coins to Hard 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.GetHardKeeper()
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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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hard.BeginBlocker(suite.ctx, suite.keeper)
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// Deposit coins to hard
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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 hard
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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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previousRepayerCoins := suite.getAccount(tc.args.repayer).GetCoins()
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err = suite.keeper.Repay(suite.ctx, tc.args.repayer, 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, err := suite.keeper.CalculatePaymentAmount(tc.args.borrowCoins, tc.args.repayCoins)
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suite.Require().NoError(err)
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// Check repayer balance
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expectedRepayerCoins := previousRepayerCoins.Sub(repaymentCoins)
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acc := suite.getAccount(tc.args.repayer)
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suite.Require().Equal(expectedRepayerCoins, 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, foundBorrow := suite.keeper.GetBorrow(suite.ctx, tc.args.borrower)
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expectedBorrowCoins := tc.args.borrowCoins.Sub(repaymentCoins)
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if tc.errArgs.expectDelete {
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suite.Require().False(foundBorrow)
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} else {
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suite.Require().True(foundBorrow)
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suite.Require().Equal(expectedBorrowCoins, borrow.Amount)
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}
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} else {
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suite.Require().Error(err)
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suite.Require().Contains(err.Error(), tc.errArgs.contains)
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// Check repayer balance (no repay coins)
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acc := suite.getAccount(tc.args.repayer)
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suite.Require().Equal(previousRepayerCoins, 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, foundBorrow := suite.keeper.GetBorrow(suite.ctx, tc.args.borrower)
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suite.Require().True(foundBorrow)
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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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// uniqueAddressCoins removes duplicate addresses, and the corresponding elements in a list of coins.
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func uniqueAddressCoins(addresses []sdk.AccAddress, coinses []sdk.Coins) ([]sdk.AccAddress, []sdk.Coins) {
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uniqueAddresses := []sdk.AccAddress{}
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filteredCoins := []sdk.Coins{}
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addrMap := map[string]bool{}
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for i, a := range addresses {
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if !addrMap[a.String()] {
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uniqueAddresses = append(uniqueAddresses, a)
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filteredCoins = append(filteredCoins, coinses[i])
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}
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addrMap[a.String()] = true
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}
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return uniqueAddresses, filteredCoins
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}
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