0g-chain/x/harvest/keeper/rewards_test.go

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package keeper_test
import (
"fmt"
"testing"
"time"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/staking"
"github.com/stretchr/testify/suite"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/crypto"
"github.com/tendermint/tendermint/crypto/ed25519"
"github.com/kava-labs/kava/app"
"github.com/kava-labs/kava/x/harvest/keeper"
2020-09-25 15:07:20 +00:00
"github.com/kava-labs/kava/x/harvest/types"
)
func (suite *KeeperTestSuite) TestApplyDepositRewards() {
type args struct {
depositor sdk.AccAddress
denom string
depositAmount sdk.Coin
totalDeposits sdk.Coin
rewardRate sdk.Coin
claimType types.ClaimType
previousBlockTime time.Time
blockTime time.Time
expectedClaimBalance sdk.Coin
}
type errArgs struct {
expectPanic bool
contains string
}
type testCase struct {
name string
args args
errArgs errArgs
}
testCases := []testCase{
{
name: "distribute rewards",
args: args{
depositor: sdk.AccAddress(crypto.AddressHash([]byte("test"))),
denom: "bnb",
rewardRate: c("hard", 500),
depositAmount: c("bnb", 100),
totalDeposits: c("bnb", 1000),
claimType: types.LP,
previousBlockTime: time.Date(2020, 11, 1, 13, 59, 50, 0, time.UTC),
blockTime: time.Date(2020, 11, 1, 14, 0, 0, 0, time.UTC),
expectedClaimBalance: c("hard", 500),
},
errArgs: errArgs{
expectPanic: false,
contains: "",
},
},
}
for _, tc := range testCases {
suite.Run(tc.name, func() {
// Initialize test app and set context
tApp := app.NewTestApp()
ctx := tApp.NewContext(true, abci.Header{Height: 1, Time: tc.args.blockTime})
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), tc.args.rewardRate, 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.Large, 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), tc.args.rewardRate, 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.Large, 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")),
},
), tc.args.previousBlockTime, types.DefaultDistributionTimes)
tApp.InitializeFromGenesisStates(app.GenesisState{types.ModuleName: types.ModuleCdc.MustMarshalJSON(harvestGS)})
supplyKeeper := tApp.GetSupplyKeeper()
supplyKeeper.MintCoins(ctx, types.ModuleAccountName, cs(tc.args.totalDeposits))
keeper := tApp.GetHarvestKeeper()
deposit := types.NewDeposit(tc.args.depositor, tc.args.depositAmount)
keeper.SetDeposit(ctx, deposit)
suite.app = tApp
suite.ctx = ctx
suite.keeper = keeper
if tc.errArgs.expectPanic {
suite.Require().Panics(func() { suite.keeper.ApplyDepositRewards(suite.ctx) })
} else {
suite.Require().NotPanics(func() { suite.keeper.ApplyDepositRewards(suite.ctx) })
claim, f := suite.keeper.GetClaim(suite.ctx, tc.args.depositor, tc.args.denom, tc.args.claimType)
suite.Require().True(f)
suite.Require().Equal(tc.args.expectedClaimBalance, claim.Amount)
}
})
}
}
func TestApplyDelegatorRewardsTestSuite(t *testing.T) {
suite.Run(t, new(DelegatorRewardsTestSuite))
}
type DelegatorRewardsTestSuite struct {
suite.Suite
validatorAddrs []sdk.ValAddress
delegatorAddrs []sdk.AccAddress
keeper keeper.Keeper
stakingKeeper staking.Keeper
app app.TestApp
rewardRate int64
}
// The default state used by each test
func (suite *DelegatorRewardsTestSuite) SetupTest() {
config := sdk.GetConfig()
app.SetBech32AddressPrefixes(config)
_, allAddrs := app.GeneratePrivKeyAddressPairs(10)
suite.delegatorAddrs = allAddrs[:5]
for _, a := range allAddrs[5:] {
suite.validatorAddrs = append(suite.validatorAddrs, sdk.ValAddress(a))
}
suite.app = app.NewTestApp()
suite.rewardRate = 500
suite.app.InitializeFromGenesisStates(
equalCoinsAuthGenState(allAddrs, cs(c("ukava", 5_000_000))),
stakingGenesisState(),
harvestGenesisState(c("hard", suite.rewardRate)),
)
suite.keeper = suite.app.GetHarvestKeeper()
suite.stakingKeeper = suite.app.GetStakingKeeper()
}
func (suite *DelegatorRewardsTestSuite) TestSlash() {
blockTime := time.Date(2020, 11, 1, 14, 0, 0, 0, time.UTC)
ctx := suite.app.NewContext(true, abci.Header{Height: 1, Time: blockTime})
const rewardDuration = 5
suite.keeper.SetPreviousDelegationDistribution(ctx, blockTime.Add(-1*rewardDuration*time.Second), "ukava")
suite.Require().NoError(
suite.deliverMsgCreateValidator(ctx, suite.validatorAddrs[0], c("ukava", 5_000_000)),
)
staking.EndBlocker(ctx, suite.stakingKeeper)
suite.Require().NoError(
suite.slashValidator(ctx, suite.validatorAddrs[0], "0.05"),
)
staking.EndBlocker(ctx, suite.stakingKeeper)
// Run function under test
suite.keeper.ApplyDelegationRewards(ctx, "ukava")
// Check claim amounts
suite.Require().NoError(
suite.verifyKavaClaimAmount(ctx, sdk.AccAddress(suite.validatorAddrs[0]), c("hard", suite.rewardRate*rewardDuration)),
)
}
func (suite *DelegatorRewardsTestSuite) TestUndelegation() {
blockTime := time.Date(2020, 11, 1, 14, 0, 0, 0, time.UTC)
ctx := suite.app.NewContext(true, abci.Header{Height: 1, Time: blockTime})
const rewardDuration = 5
suite.keeper.SetPreviousDelegationDistribution(ctx, blockTime.Add(-1*rewardDuration*time.Second), "ukava")
suite.Require().NoError(
suite.deliverMsgCreateValidator(ctx, suite.validatorAddrs[0], c("ukava", 1_000_000)),
)
suite.Require().NoError(
suite.deliverMsgDelegate(ctx, suite.delegatorAddrs[0], suite.validatorAddrs[0], c("ukava", 1_000_000)),
)
staking.EndBlocker(ctx, suite.stakingKeeper)
suite.Require().NoError(
suite.deliverMsgUndelegate(ctx, suite.delegatorAddrs[0], suite.validatorAddrs[0], c("ukava", 1_000_000)),
)
staking.EndBlocker(ctx, suite.stakingKeeper)
// Run function under test
suite.keeper.ApplyDelegationRewards(ctx, "ukava")
// Check claim amounts
suite.Require().NoError(
suite.verifyKavaClaimAmount(ctx, sdk.AccAddress(suite.validatorAddrs[0]), c("hard", suite.rewardRate*rewardDuration)),
)
suite.Require().False(
suite.kavaClaimExists(ctx, suite.delegatorAddrs[0]),
)
}
func (suite *DelegatorRewardsTestSuite) TestUnevenNumberDelegations() {
// Setup a context
blockTime := time.Date(2020, 11, 1, 14, 0, 0, 0, time.UTC)
ctx := suite.app.NewContext(true, abci.Header{Height: 1, Time: blockTime})
const rewardDuration = 5
suite.keeper.SetPreviousDelegationDistribution(ctx, blockTime.Add(-1*rewardDuration*time.Second), "ukava")
suite.Require().NoError(
suite.deliverMsgCreateValidator(ctx, suite.validatorAddrs[0], c("ukava", 1_000_000)),
)
suite.Require().NoError(
suite.deliverMsgDelegate(ctx, suite.delegatorAddrs[0], suite.validatorAddrs[0], c("ukava", 1_000_000)),
)
suite.Require().NoError(
suite.deliverMsgDelegate(ctx, suite.delegatorAddrs[1], suite.validatorAddrs[0], c("ukava", 1_000_000)),
)
staking.EndBlocker(ctx, suite.stakingKeeper)
// Run function under test
suite.keeper.ApplyDelegationRewards(ctx, "ukava")
// Check claim amounts
expectedReward := suite.rewardRate * rewardDuration / 3 // floor division
suite.Require().NoError(
suite.verifyKavaClaimAmount(ctx, sdk.AccAddress(suite.validatorAddrs[0]), c("hard", expectedReward)),
)
suite.Require().NoError(
suite.verifyKavaClaimAmount(ctx, suite.delegatorAddrs[0], c("hard", expectedReward)),
)
suite.Require().NoError(
suite.verifyKavaClaimAmount(ctx, suite.delegatorAddrs[1], c("hard", expectedReward)),
)
}
func (suite *DelegatorRewardsTestSuite) TestSlashWithUndelegated() {
// Setup a context
blockTime := time.Date(2020, 11, 1, 14, 0, 0, 0, time.UTC)
ctx := suite.app.NewContext(true, abci.Header{Height: 1, Time: blockTime})
const rewardDuration = 5
suite.keeper.SetPreviousDelegationDistribution(ctx, blockTime.Add(-1*rewardDuration*time.Second), "ukava")
suite.Require().NoError(
suite.deliverMsgCreateValidator(ctx, suite.validatorAddrs[0], c("ukava", 1_000_000)),
)
suite.Require().NoError(
suite.deliverMsgDelegate(ctx, suite.delegatorAddrs[0], suite.validatorAddrs[0], c("ukava", 1_000_000)),
)
suite.Require().NoError(
suite.deliverMsgDelegate(ctx, suite.delegatorAddrs[1], suite.validatorAddrs[0], c("ukava", 1_000_000)),
)
staking.EndBlocker(ctx, suite.stakingKeeper)
suite.Require().NoError(
suite.deliverMsgUndelegate(ctx, suite.delegatorAddrs[0], suite.validatorAddrs[0], c("ukava", 1_000_000)),
)
staking.EndBlocker(ctx, suite.stakingKeeper)
suite.Require().NoError(
suite.slashValidator(ctx, suite.validatorAddrs[0], "0.05"),
)
staking.EndBlocker(ctx, suite.stakingKeeper)
// Run function under test
suite.keeper.ApplyDelegationRewards(ctx, "ukava")
// Check claim amounts
suite.Require().NoError(
suite.verifyKavaClaimAmount(ctx, sdk.AccAddress(suite.validatorAddrs[0]), c("hard", suite.rewardRate*rewardDuration/2)),
)
suite.Require().False(
suite.kavaClaimExists(ctx, suite.delegatorAddrs[0]),
)
suite.Require().NoError(
suite.verifyKavaClaimAmount(ctx, suite.delegatorAddrs[1], c("hard", suite.rewardRate*rewardDuration/2)),
)
}
func (suite *DelegatorRewardsTestSuite) TestUnbondingValidator() {
// Setup a context
blockTime := time.Date(2020, 11, 1, 14, 0, 0, 0, time.UTC)
ctx := suite.app.NewContext(true, abci.Header{Height: 1, Time: blockTime})
const rewardDuration = 5
suite.keeper.SetPreviousDelegationDistribution(ctx, blockTime.Add(-1*rewardDuration*time.Second), "ukava")
suite.Require().NoError(
suite.deliverMsgCreateValidator(ctx, suite.validatorAddrs[0], c("ukava", 1_000_000)),
)
suite.Require().NoError(
suite.deliverMsgCreateValidator(ctx, suite.validatorAddrs[1], c("ukava", 1_000_000)),
)
suite.Require().NoError(
suite.deliverMsgDelegate(ctx, suite.delegatorAddrs[0], suite.validatorAddrs[0], c("ukava", 1_000_000)),
)
suite.Require().NoError(
suite.deliverMsgDelegate(ctx, suite.delegatorAddrs[1], suite.validatorAddrs[1], c("ukava", 1_000_000)),
)
staking.EndBlocker(ctx, suite.stakingKeeper)
suite.Require().NoError(
// jail the validator to put it into an unbonding state
suite.jailValidator(ctx, suite.validatorAddrs[0]),
)
staking.EndBlocker(ctx, suite.stakingKeeper)
// Run function under test
suite.keeper.ApplyDelegationRewards(ctx, "ukava")
// Check claim amounts
suite.Require().False(
// validator 0 will be unbonding and should not receive rewards
suite.kavaClaimExists(ctx, sdk.AccAddress(suite.validatorAddrs[0])),
)
suite.Require().NoError(
suite.verifyKavaClaimAmount(ctx, sdk.AccAddress(suite.validatorAddrs[1]), c("hard", suite.rewardRate*rewardDuration/2)),
)
suite.Require().False(
// delegations to unbonding validators and should not receive rewards
suite.kavaClaimExists(ctx, suite.delegatorAddrs[0]),
)
suite.Require().NoError(
suite.verifyKavaClaimAmount(ctx, suite.delegatorAddrs[1], c("hard", suite.rewardRate*rewardDuration/2)),
)
}
func (suite *DelegatorRewardsTestSuite) deliverMsgCreateValidator(ctx sdk.Context, address sdk.ValAddress, selfDelegation sdk.Coin) error {
msg := staking.NewMsgCreateValidator(
address,
ed25519.GenPrivKey().PubKey(),
selfDelegation,
staking.Description{},
staking.NewCommissionRates(sdk.ZeroDec(), sdk.ZeroDec(), sdk.ZeroDec()),
sdk.NewInt(1_000_000),
)
handleStakingMsg := staking.NewHandler(suite.stakingKeeper)
_, err := handleStakingMsg(ctx, msg)
return err
}
func (suite *DelegatorRewardsTestSuite) deliverMsgDelegate(ctx sdk.Context, delegator sdk.AccAddress, validator sdk.ValAddress, amount sdk.Coin) error {
msg := staking.NewMsgDelegate(
delegator,
validator,
amount,
)
handleStakingMsg := staking.NewHandler(suite.stakingKeeper)
_, err := handleStakingMsg(ctx, msg)
return err
}
func (suite *DelegatorRewardsTestSuite) deliverMsgUndelegate(ctx sdk.Context, delegator sdk.AccAddress, validator sdk.ValAddress, amount sdk.Coin) error {
msg := staking.NewMsgUndelegate(
delegator,
validator,
amount,
)
handleStakingMsg := staking.NewHandler(suite.stakingKeeper)
_, err := handleStakingMsg(ctx, msg)
return err
}
func (suite *DelegatorRewardsTestSuite) slashValidator(ctx sdk.Context, validator sdk.ValAddress, slashPercent string) error {
// Assume slashable offence occurred at block 1. Note this might cause problems if tests are running at a block height higher than the unbonding period (default 3 weeks)
const infractionHeight int64 = 1
val, found := suite.stakingKeeper.GetValidator(ctx, validator)
if !found {
return fmt.Errorf("can't find validator in state")
}
suite.stakingKeeper.Slash(
ctx,
sdk.GetConsAddress(val.ConsPubKey),
infractionHeight,
val.GetConsensusPower(),
sdk.MustNewDecFromStr(slashPercent),
)
return nil
}
func (suite *DelegatorRewardsTestSuite) jailValidator(ctx sdk.Context, validator sdk.ValAddress) error {
val, found := suite.stakingKeeper.GetValidator(ctx, validator)
if !found {
return fmt.Errorf("can't find validator in state")
}
suite.stakingKeeper.Jail(ctx, sdk.GetConsAddress(val.ConsPubKey))
return nil
}
// verifyKavaClaimAmount looks up a ukava claim and checks the claim amount is equal to an expected value
func (suite *DelegatorRewardsTestSuite) verifyKavaClaimAmount(ctx sdk.Context, owner sdk.AccAddress, expectedAmount sdk.Coin) error {
claim, found := suite.keeper.GetClaim(ctx, owner, "ukava", types.Stake)
if !found {
return fmt.Errorf("could not find claim")
}
if !expectedAmount.IsEqual(claim.Amount) {
return fmt.Errorf("expected claim amount (%s) != actual claim amount (%s)", expectedAmount, claim.Amount)
}
return nil
}
// kavaClaimExists checks the store for a ukava claim
func (suite *DelegatorRewardsTestSuite) kavaClaimExists(ctx sdk.Context, owner sdk.AccAddress) bool {
_, found := suite.keeper.GetClaim(ctx, owner, "ukava", types.Stake)
return found
}
func harvestGenesisState(rewardRate sdk.Coin) app.GenesisState {
loanToValue := sdk.MustNewDecFromStr("0.6")
genState := 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),
rewardRate,
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.Large, 24, sdk.OneDec()),
},
),
},
types.DelegatorDistributionSchedules{
types.NewDelegatorDistributionSchedule(
types.NewDistributionSchedule(
true,
"ukava",
time.Date(2020, 10, 8, 14, 0, 0, 0, time.UTC),
time.Date(2025, 10, 8, 14, 0, 0, 0, time.UTC),
rewardRate,
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.Large, 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,
)
return app.GenesisState{
types.ModuleName: types.ModuleCdc.MustMarshalJSON(genState),
}
}
func stakingGenesisState() app.GenesisState {
genState := staking.DefaultGenesisState()
genState.Params.BondDenom = "ukava"
return app.GenesisState{
staking.ModuleName: staking.ModuleCdc.MustMarshalJSON(genState),
}
}
// equalCoinsAuthGenState returns an auth genesis state with the same coins for each account
func equalCoinsAuthGenState(addresses []sdk.AccAddress, coins sdk.Coins) app.GenesisState {
coinsList := []sdk.Coins{}
for range addresses {
coinsList = append(coinsList, coins)
}
return app.NewAuthGenState(addresses, coinsList)
}