0g-chain/x/harvest/keeper/deposit_test.go
Denali Marsh 49d62dd076
Harvest: interest rate logic (#720)
* initial feature scaffolding

* implement interest keeper logic

* basic AccrueInterest

* accrue interest on borrow

* update borrow index formula

* update sample reserve factor

* move AccrueInterest to begin blocker

* refactor interest rate updates for accrue interest

* use interest rate model from store

* refactor begin blocker state machine

* add reserve factor to interest model params

* update comment

* store money market instead of interest rate models

* update test suite

* use BorrowedCoins store key

* update public functions and alias

* unit tests, keeper test scaffolding

* demo panic

* address revisions

* add 'normal no jump' test case

* spy = 1 + borrow rate

* update comment

* APYToSPY unit test

* per user borrow index list

* interest keeper test

* test: interest applied on successive borrows

* varied snapshot times

* test: multiple, varied snapshots

* address revisions

* add pending interest before validating new borrow

* update makefile

* address revisions

* fix test
2020-12-03 22:50:35 +01:00

292 lines
12 KiB
Go

package keeper_test
import (
"strings"
"time"
sdk "github.com/cosmos/cosmos-sdk/types"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/crypto"
tmtime "github.com/tendermint/tendermint/types/time"
"github.com/kava-labs/kava/app"
"github.com/kava-labs/kava/x/harvest/types"
)
func (suite *KeeperTestSuite) TestDeposit() {
type args struct {
depositor sdk.AccAddress
amount sdk.Coin
numberDeposits int
expectedAccountBalance sdk.Coins
expectedModAccountBalance sdk.Coins
}
type errArgs struct {
expectPass bool
contains string
}
type depositTest struct {
name string
args args
errArgs errArgs
}
testCases := []depositTest{
{
"valid",
args{
depositor: sdk.AccAddress(crypto.AddressHash([]byte("test"))),
amount: sdk.NewCoin("bnb", sdk.NewInt(100)),
numberDeposits: 1,
expectedAccountBalance: sdk.NewCoins(sdk.NewCoin("bnb", sdk.NewInt(900)), sdk.NewCoin("btcb", sdk.NewInt(1000))),
expectedModAccountBalance: sdk.NewCoins(sdk.NewCoin("bnb", sdk.NewInt(100))),
},
errArgs{
expectPass: true,
contains: "",
},
},
{
"valid multi deposit",
args{
depositor: sdk.AccAddress(crypto.AddressHash([]byte("test"))),
amount: sdk.NewCoin("bnb", sdk.NewInt(100)),
numberDeposits: 2,
expectedAccountBalance: sdk.NewCoins(sdk.NewCoin("bnb", sdk.NewInt(800)), sdk.NewCoin("btcb", sdk.NewInt(1000))),
expectedModAccountBalance: sdk.NewCoins(sdk.NewCoin("bnb", sdk.NewInt(200))),
},
errArgs{
expectPass: true,
contains: "",
},
},
{
"invalid deposit denom",
args{
depositor: sdk.AccAddress(crypto.AddressHash([]byte("test"))),
amount: sdk.NewCoin("btcb", sdk.NewInt(100)),
numberDeposits: 1,
expectedAccountBalance: sdk.Coins{},
expectedModAccountBalance: sdk.Coins{},
},
errArgs{
expectPass: false,
contains: "invalid deposit denom",
},
},
{
"insufficient funds",
args{
depositor: sdk.AccAddress(crypto.AddressHash([]byte("test"))),
amount: sdk.NewCoin("bnb", sdk.NewInt(10000)),
numberDeposits: 1,
expectedAccountBalance: sdk.Coins{},
expectedModAccountBalance: sdk.Coins{},
},
errArgs{
expectPass: false,
contains: "insufficient funds",
},
},
}
for _, tc := range testCases {
suite.Run(tc.name, func() {
// create new app with one funded account
// Initialize test app and set context
tApp := app.NewTestApp()
ctx := tApp.NewContext(true, abci.Header{Height: 1, Time: tmtime.Now()})
authGS := app.NewAuthGenState([]sdk.AccAddress{tc.args.depositor}, []sdk.Coins{sdk.NewCoins(sdk.NewCoin("bnb", sdk.NewInt(1000)), sdk.NewCoin("btcb", sdk.NewInt(1000)))})
loanToValue, _ := sdk.NewDecFromStr("0.6")
harvestGS := types.NewGenesisState(types.NewParams(
true,
types.DistributionSchedules{
types.NewDistributionSchedule(true, "bnb", time.Date(2020, 10, 8, 14, 0, 0, 0, time.UTC), time.Date(2020, 11, 22, 14, 0, 0, 0, time.UTC), sdk.NewCoin("hard", sdk.NewInt(5000)), time.Date(2021, 11, 22, 14, 0, 0, 0, time.UTC), types.Multipliers{types.NewMultiplier(types.Small, 0, sdk.MustNewDecFromStr("0.33")), types.NewMultiplier(types.Medium, 6, sdk.MustNewDecFromStr("0.5")), types.NewMultiplier(types.Medium, 24, sdk.OneDec())}),
},
types.DelegatorDistributionSchedules{types.NewDelegatorDistributionSchedule(
types.NewDistributionSchedule(true, "bnb", time.Date(2020, 10, 8, 14, 0, 0, 0, time.UTC), time.Date(2025, 10, 8, 14, 0, 0, 0, time.UTC), sdk.NewCoin("hard", sdk.NewInt(500)), time.Date(2026, 10, 8, 14, 0, 0, 0, time.UTC), types.Multipliers{types.NewMultiplier(types.Small, 0, sdk.MustNewDecFromStr("0.33")), types.NewMultiplier(types.Medium, 6, sdk.MustNewDecFromStr("0.5")), types.NewMultiplier(types.Medium, 24, sdk.OneDec())}),
time.Hour*24,
),
},
types.MoneyMarkets{
types.NewMoneyMarket("usdx", types.NewBorrowLimit(false, sdk.NewDec(1000000000000000), loanToValue), "usdx:usd", sdk.NewInt(1000000), types.NewInterestRateModel(sdk.MustNewDecFromStr("0.05"), sdk.MustNewDecFromStr("2"), sdk.MustNewDecFromStr("0.8"), sdk.MustNewDecFromStr("10")), sdk.MustNewDecFromStr("0.05")),
types.NewMoneyMarket("ukava", types.NewBorrowLimit(false, sdk.NewDec(1000000000000000), loanToValue), "kava:usd", sdk.NewInt(1000000), types.NewInterestRateModel(sdk.MustNewDecFromStr("0.05"), sdk.MustNewDecFromStr("2"), sdk.MustNewDecFromStr("0.8"), sdk.MustNewDecFromStr("10")), sdk.MustNewDecFromStr("0.05")),
},
), types.DefaultPreviousBlockTime, types.DefaultDistributionTimes)
tApp.InitializeFromGenesisStates(authGS, app.GenesisState{types.ModuleName: types.ModuleCdc.MustMarshalJSON(harvestGS)})
keeper := tApp.GetHarvestKeeper()
suite.app = tApp
suite.ctx = ctx
suite.keeper = keeper
// run the test
var err error
for i := 0; i < tc.args.numberDeposits; i++ {
err = suite.keeper.Deposit(suite.ctx, tc.args.depositor, tc.args.amount)
}
// verify results
if tc.errArgs.expectPass {
suite.Require().NoError(err)
acc := suite.getAccount(tc.args.depositor)
suite.Require().Equal(tc.args.expectedAccountBalance, acc.GetCoins())
mAcc := suite.getModuleAccount(types.ModuleAccountName)
suite.Require().Equal(tc.args.expectedModAccountBalance, mAcc.GetCoins())
_, f := suite.keeper.GetDeposit(suite.ctx, tc.args.depositor, tc.args.amount.Denom)
suite.Require().True(f)
} else {
suite.Require().Error(err)
suite.Require().True(strings.Contains(err.Error(), tc.errArgs.contains))
}
})
}
}
func (suite *KeeperTestSuite) TestWithdraw() {
type args struct {
depositor sdk.AccAddress
depositAmount sdk.Coin
withdrawAmount sdk.Coin
createDeposit bool
expectedAccountBalance sdk.Coins
expectedModAccountBalance sdk.Coins
depositExists bool
finalDepositAmount sdk.Coin
}
type errArgs struct {
expectPass bool
contains string
}
type withdrawTest struct {
name string
args args
errArgs errArgs
}
testCases := []withdrawTest{
{
"valid partial withdraw",
args{
depositor: sdk.AccAddress(crypto.AddressHash([]byte("test"))),
depositAmount: sdk.NewCoin("bnb", sdk.NewInt(200)),
withdrawAmount: sdk.NewCoin("bnb", sdk.NewInt(100)),
createDeposit: true,
expectedAccountBalance: sdk.NewCoins(sdk.NewCoin("bnb", sdk.NewInt(900)), sdk.NewCoin("btcb", sdk.NewInt(1000))),
expectedModAccountBalance: sdk.NewCoins(sdk.NewCoin("bnb", sdk.NewInt(100))),
depositExists: true,
finalDepositAmount: sdk.NewCoin("bnb", sdk.NewInt(100)),
},
errArgs{
expectPass: true,
contains: "",
},
},
{
"valid full withdraw",
args{
depositor: sdk.AccAddress(crypto.AddressHash([]byte("test"))),
depositAmount: sdk.NewCoin("bnb", sdk.NewInt(200)),
withdrawAmount: sdk.NewCoin("bnb", sdk.NewInt(200)),
createDeposit: true,
expectedAccountBalance: sdk.NewCoins(sdk.NewCoin("bnb", sdk.NewInt(1000)), sdk.NewCoin("btcb", sdk.NewInt(1000))),
expectedModAccountBalance: sdk.Coins(nil),
depositExists: false,
finalDepositAmount: sdk.Coin{},
},
errArgs{
expectPass: true,
contains: "",
},
},
{
"deposit not found invalid denom",
args{
depositor: sdk.AccAddress(crypto.AddressHash([]byte("test"))),
depositAmount: sdk.NewCoin("bnb", sdk.NewInt(200)),
withdrawAmount: sdk.NewCoin("btcb", sdk.NewInt(200)),
createDeposit: true,
expectedAccountBalance: sdk.Coins{},
expectedModAccountBalance: sdk.Coins{},
depositExists: false,
finalDepositAmount: sdk.Coin{},
},
errArgs{
expectPass: false,
contains: "deposit not found",
},
},
{
"withdraw exceeds deposit",
args{
depositor: sdk.AccAddress(crypto.AddressHash([]byte("test"))),
depositAmount: sdk.NewCoin("bnb", sdk.NewInt(200)),
withdrawAmount: sdk.NewCoin("bnb", sdk.NewInt(300)),
createDeposit: true,
expectedAccountBalance: sdk.Coins{},
expectedModAccountBalance: sdk.Coins{},
depositExists: false,
finalDepositAmount: sdk.Coin{},
},
errArgs{
expectPass: false,
contains: "withdrawal amount exceeds deposit amount",
},
},
}
for _, tc := range testCases {
suite.Run(tc.name, func() {
// create new app with one funded account
// Initialize test app and set context
tApp := app.NewTestApp()
ctx := tApp.NewContext(true, abci.Header{Height: 1, Time: tmtime.Now()})
authGS := app.NewAuthGenState([]sdk.AccAddress{tc.args.depositor}, []sdk.Coins{sdk.NewCoins(sdk.NewCoin("bnb", sdk.NewInt(1000)), sdk.NewCoin("btcb", sdk.NewInt(1000)))})
loanToValue := sdk.MustNewDecFromStr("0.6")
harvestGS := types.NewGenesisState(types.NewParams(
true,
types.DistributionSchedules{
types.NewDistributionSchedule(true, "bnb", time.Date(2020, 10, 8, 14, 0, 0, 0, time.UTC), time.Date(2020, 11, 22, 14, 0, 0, 0, time.UTC), sdk.NewCoin("hard", sdk.NewInt(5000)), time.Date(2021, 11, 22, 14, 0, 0, 0, time.UTC), types.Multipliers{types.NewMultiplier(types.Small, 0, sdk.MustNewDecFromStr("0.33")), types.NewMultiplier(types.Medium, 6, sdk.MustNewDecFromStr("0.5")), types.NewMultiplier(types.Medium, 24, sdk.OneDec())}),
},
types.DelegatorDistributionSchedules{types.NewDelegatorDistributionSchedule(
types.NewDistributionSchedule(true, "bnb", time.Date(2020, 10, 8, 14, 0, 0, 0, time.UTC), time.Date(2025, 10, 8, 14, 0, 0, 0, time.UTC), sdk.NewCoin("hard", sdk.NewInt(500)), time.Date(2026, 10, 8, 14, 0, 0, 0, time.UTC), types.Multipliers{types.NewMultiplier(types.Small, 0, sdk.MustNewDecFromStr("0.33")), types.NewMultiplier(types.Medium, 6, sdk.MustNewDecFromStr("0.5")), types.NewMultiplier(types.Medium, 24, sdk.OneDec())}),
time.Hour*24,
),
},
types.MoneyMarkets{
types.NewMoneyMarket("usdx", types.NewBorrowLimit(false, sdk.NewDec(1000000000000000), loanToValue), "usdx:usd", sdk.NewInt(1000000), types.NewInterestRateModel(sdk.MustNewDecFromStr("0.05"), sdk.MustNewDecFromStr("2"), sdk.MustNewDecFromStr("0.8"), sdk.MustNewDecFromStr("10")), sdk.MustNewDecFromStr("0.05")),
types.NewMoneyMarket("ukava", types.NewBorrowLimit(false, sdk.NewDec(1000000000000000), loanToValue), "kava:usd", sdk.NewInt(1000000), types.NewInterestRateModel(sdk.MustNewDecFromStr("0.05"), sdk.MustNewDecFromStr("2"), sdk.MustNewDecFromStr("0.8"), sdk.MustNewDecFromStr("10")), sdk.MustNewDecFromStr("0.05")),
},
), types.DefaultPreviousBlockTime, types.DefaultDistributionTimes)
tApp.InitializeFromGenesisStates(authGS, app.GenesisState{types.ModuleName: types.ModuleCdc.MustMarshalJSON(harvestGS)})
keeper := tApp.GetHarvestKeeper()
suite.app = tApp
suite.ctx = ctx
suite.keeper = keeper
if tc.args.createDeposit {
err := suite.keeper.Deposit(suite.ctx, tc.args.depositor, tc.args.depositAmount)
suite.Require().NoError(err)
}
err := suite.keeper.Withdraw(suite.ctx, tc.args.depositor, tc.args.withdrawAmount)
if tc.errArgs.expectPass {
suite.Require().NoError(err)
acc := suite.getAccount(tc.args.depositor)
suite.Require().Equal(tc.args.expectedAccountBalance, acc.GetCoins())
mAcc := suite.getModuleAccount(types.ModuleAccountName)
suite.Require().Equal(tc.args.expectedModAccountBalance, mAcc.GetCoins())
testDeposit, f := suite.keeper.GetDeposit(suite.ctx, tc.args.depositor, tc.args.depositAmount.Denom)
if tc.args.depositExists {
suite.Require().True(f)
suite.Require().Equal(tc.args.finalDepositAmount, testDeposit.Amount)
} else {
suite.Require().False(f)
}
} else {
suite.Require().Error(err)
suite.Require().True(strings.Contains(err.Error(), tc.errArgs.contains))
}
})
}
}