mirror of
https://github.com/0glabs/0g-chain.git
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fix bug that skipped minimum borrow check (#870)
add tests for non-borrower repayer address
This commit is contained in:
Ruaridh
GitHub
parent
e21a04ca57
commit
509d2edbca
@ -23,13 +23,13 @@ func (k Keeper) Repay(ctx sdk.Context, sender, owner sdk.AccAddress, coins sdk.C
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// Refresh borrow after syncing interest
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borrow, _ = k.GetBorrow(ctx, owner)
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// Validate that sender holds coins for repayment
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err := k.ValidateRepay(ctx, sender, owner, coins)
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// cap the repayment by what's available to repay (the borrow amount)
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payment, err := k.CalculatePaymentAmount(borrow.Amount, coins)
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if err != nil {
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return err
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}
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payment, err := k.CalculatePaymentAmount(borrow.Amount, coins)
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// Validate that sender holds coins for repayment
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err = k.ValidateRepay(ctx, sender, owner, payment)
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if err != nil {
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return err
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}
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@ -144,8 +144,10 @@ func (k Keeper) ValidateRepay(ctx sdk.Context, sender, owner sdk.AccAddress, coi
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// If the proposed repayment would results in a borrowed USD value below the minimum borrow USD value, reject it.
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// User can overpay their loan to close it out, but underpaying by such a margin that the USD value is in an
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// invalid range is not allowed
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// Unless the user is fully repaying their loan
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proposedBorrowNewUSDValue := existingBorrowUSDValue.Sub(repayTotalUSDValue)
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if proposedBorrowNewUSDValue.IsPositive() && proposedBorrowNewUSDValue.LT(k.GetMinimumBorrowUSDValue(ctx)) {
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isFullRepayment := coins.IsEqual(existingBorrow.Amount)
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if proposedBorrowNewUSDValue.LT(k.GetMinimumBorrowUSDValue(ctx)) && !isFullRepayment {
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return sdkerrors.Wrapf(types.ErrBelowMinimumBorrowValue, "the proposed borrow's USD value $%s is below the minimum borrow limit $%s", proposedBorrowNewUSDValue, k.GetMinimumBorrowUSDValue(ctx))
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}
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@ -1,7 +1,6 @@
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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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@ -18,13 +17,13 @@ import (
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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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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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@ -45,10 +44,30 @@ func (suite *KeeperTestSuite) TestRepay() {
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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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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.Coin{sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_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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@ -61,10 +80,12 @@ func (suite *KeeperTestSuite) TestRepay() {
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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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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.Coin{sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_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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@ -77,10 +98,12 @@ func (suite *KeeperTestSuite) TestRepay() {
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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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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.Coin{sdk.NewCoin("ukava", sdk.NewInt(80*KAVA_CF))}, // Deposit less so user still has some KAVA
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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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@ -93,42 +116,48 @@ func (suite *KeeperTestSuite) TestRepay() {
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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("test"))),
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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.Coin{sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_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: "account can only repay up to 0bnb",
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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: insufficent balance for repay",
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"invalid: insufficient balance for repay",
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args{
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borrower: sdk.AccAddress(crypto.AddressHash([]byte("test"))),
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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.Coin{sdk.NewCoin("ukava", sdk.NewInt(100*KAVA_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(51*KAVA_CF))), // Exceeds user's KAVA balance
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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 50000000ukava",
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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("test"))),
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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.Coin{sdk.NewCoin("usdx", sdk.NewInt(100*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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@ -141,12 +170,14 @@ func (suite *KeeperTestSuite) TestRepay() {
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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("test"))),
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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.Coin{sdk.NewCoin("usdx", sdk.NewInt(100*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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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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@ -154,6 +185,24 @@ func (suite *KeeperTestSuite) TestRepay() {
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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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@ -163,9 +212,11 @@ func (suite *KeeperTestSuite) TestRepay() {
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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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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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@ -242,17 +293,19 @@ func (suite *KeeperTestSuite) TestRepay() {
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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.borrower, tc.args.repayCoins)
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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 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 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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@ -271,12 +324,11 @@ func (suite *KeeperTestSuite) TestRepay() {
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}
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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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suite.Require().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 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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@ -291,3 +343,19 @@ func (suite *KeeperTestSuite) TestRepay() {
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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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