0g-chain/x/incentive/keeper/rewards_delegator_accum_test.go

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package keeper_test
import (
"testing"
"time"
"github.com/stretchr/testify/suite"
"github.com/kava-labs/kava/x/incentive/types"
)
type AccumulateDelegatorRewardsTests struct {
unitTester
}
func (suite *AccumulateDelegatorRewardsTests) storedTimeEquals(denom string, expected time.Time) {
storedTime, found := suite.keeper.GetPreviousDelegatorRewardAccrualTime(suite.ctx, denom)
suite.True(found)
suite.Equal(expected, storedTime)
}
func (suite *AccumulateDelegatorRewardsTests) storedIndexesEqual(denom string, expected types.RewardIndexes) {
storedIndexes, found := suite.keeper.GetDelegatorRewardIndexes(suite.ctx, denom)
suite.Equal(found, expected != nil)
if found {
suite.Equal(expected, storedIndexes)
} else {
suite.Empty(storedIndexes)
}
}
func TestAccumulateDelegatorRewards(t *testing.T) {
suite.Run(t, new(AccumulateDelegatorRewardsTests))
}
func (suite *AccumulateDelegatorRewardsTests) TestStateUpdatedWhenBlockTimeHasIncreased() {
stakingKeeper := newFakeStakingKeeper().addBondedTokens(1e6)
suite.keeper = suite.NewKeeper(&fakeParamSubspace{}, nil, nil, nil, nil, stakingKeeper, nil, nil, nil, nil)
suite.storeGlobalDelegatorIndexes(types.MultiRewardIndexes{
{
CollateralType: types.BondDenom,
RewardIndexes: types.RewardIndexes{
{
CollateralType: "hard",
RewardFactor: d("0.02"),
},
{
CollateralType: "ukava",
RewardFactor: d("0.04"),
},
},
},
})
previousAccrualTime := time.Date(1998, 1, 1, 0, 0, 0, 0, time.UTC)
suite.keeper.SetPreviousDelegatorRewardAccrualTime(suite.ctx, types.BondDenom, previousAccrualTime)
newAccrualTime := previousAccrualTime.Add(1 * time.Hour)
suite.ctx = suite.ctx.WithBlockTime(newAccrualTime)
period := types.NewMultiRewardPeriod(
true,
types.BondDenom,
time.Unix(0, 0), // ensure the test is within start and end times
distantFuture,
cs(c("hard", 2000), c("ukava", 1000)), // same denoms as in global indexes
)
suite.keeper.AccumulateDelegatorRewards(suite.ctx, period)
// check time and factors
suite.storedTimeEquals(types.BondDenom, newAccrualTime)
suite.storedIndexesEqual(types.BondDenom, types.RewardIndexes{
{
CollateralType: "hard",
RewardFactor: d("7.22"),
},
{
CollateralType: "ukava",
RewardFactor: d("3.64"),
},
})
}
func (suite *AccumulateDelegatorRewardsTests) TestStateUnchangedWhenBlockTimeHasNotIncreased() {
stakingKeeper := newFakeStakingKeeper().addBondedTokens(1e6)
suite.keeper = suite.NewKeeper(&fakeParamSubspace{}, nil, nil, nil, nil, stakingKeeper, nil, nil, nil, nil)
previousIndexes := types.MultiRewardIndexes{
{
CollateralType: types.BondDenom,
RewardIndexes: types.RewardIndexes{
{
CollateralType: "hard",
RewardFactor: d("0.02"),
},
{
CollateralType: "ukava",
RewardFactor: d("0.04"),
},
},
},
}
suite.storeGlobalDelegatorIndexes(previousIndexes)
previousAccrualTime := time.Date(1998, 1, 1, 0, 0, 0, 0, time.UTC)
suite.keeper.SetPreviousDelegatorRewardAccrualTime(suite.ctx, types.BondDenom, previousAccrualTime)
suite.ctx = suite.ctx.WithBlockTime(previousAccrualTime)
period := types.NewMultiRewardPeriod(
true,
types.BondDenom,
time.Unix(0, 0), // ensure the test is within start and end times
distantFuture,
cs(c("hard", 2000), c("ukava", 1000)), // same denoms as in global indexes
)
suite.keeper.AccumulateDelegatorRewards(suite.ctx, period)
// check time and factors
suite.storedTimeEquals(types.BondDenom, previousAccrualTime)
expected, f := previousIndexes.Get(types.BondDenom)
suite.True(f)
suite.storedIndexesEqual(types.BondDenom, expected)
}
func (suite *AccumulateDelegatorRewardsTests) TestNoAccumulationWhenSourceSharesAreZero() {
stakingKeeper := newFakeStakingKeeper() // zero total bonded
suite.keeper = suite.NewKeeper(&fakeParamSubspace{}, nil, nil, nil, nil, stakingKeeper, nil, nil, nil, nil)
previousIndexes := types.MultiRewardIndexes{
{
CollateralType: types.BondDenom,
RewardIndexes: types.RewardIndexes{
{
CollateralType: "hard",
RewardFactor: d("0.02"),
},
{
CollateralType: "ukava",
RewardFactor: d("0.04"),
},
},
},
}
suite.storeGlobalDelegatorIndexes(previousIndexes)
previousAccrualTime := time.Date(1998, 1, 1, 0, 0, 0, 0, time.UTC)
suite.keeper.SetPreviousDelegatorRewardAccrualTime(suite.ctx, types.BondDenom, previousAccrualTime)
firstAccrualTime := previousAccrualTime.Add(7 * time.Second)
suite.ctx = suite.ctx.WithBlockTime(firstAccrualTime)
period := types.NewMultiRewardPeriod(
true,
types.BondDenom,
time.Unix(0, 0), // ensure the test is within start and end times
distantFuture,
cs(c("hard", 2000), c("ukava", 1000)), // same denoms as in global indexes
)
suite.keeper.AccumulateDelegatorRewards(suite.ctx, period)
// check time and factors
suite.storedTimeEquals(types.BondDenom, firstAccrualTime)
expected, f := previousIndexes.Get(types.BondDenom)
suite.True(f)
suite.storedIndexesEqual(types.BondDenom, expected)
}
func (suite *AccumulateDelegatorRewardsTests) TestStateAddedWhenStateDoesNotExist() {
stakingKeeper := newFakeStakingKeeper().addBondedTokens(1e6)
suite.keeper = suite.NewKeeper(&fakeParamSubspace{}, nil, nil, nil, nil, stakingKeeper, nil, nil, nil, nil)
period := types.NewMultiRewardPeriod(
true,
types.BondDenom,
time.Unix(0, 0), // ensure the test is within start and end times
distantFuture,
cs(c("hard", 2000), c("ukava", 1000)),
)
firstAccrualTime := time.Date(1998, 1, 1, 0, 0, 0, 0, time.UTC)
suite.ctx = suite.ctx.WithBlockTime(firstAccrualTime)
suite.keeper.AccumulateDelegatorRewards(suite.ctx, period)
// After the first accumulation only the current block time should be stored.
// The indexes will be empty as no time has passed since the previous block because it didn't exist.
suite.storedTimeEquals(types.BondDenom, firstAccrualTime)
suite.storedIndexesEqual(types.BondDenom, nil)
secondAccrualTime := firstAccrualTime.Add(10 * time.Second)
suite.ctx = suite.ctx.WithBlockTime(secondAccrualTime)
suite.keeper.AccumulateDelegatorRewards(suite.ctx, period)
// After the second accumulation both current block time and indexes should be stored.
suite.storedTimeEquals(types.BondDenom, secondAccrualTime)
suite.storedIndexesEqual(types.BondDenom, types.RewardIndexes{
{
CollateralType: "hard",
RewardFactor: d("0.02"),
},
{
CollateralType: "ukava",
RewardFactor: d("0.01"),
},
})
}
func (suite *AccumulateDelegatorRewardsTests) TestNoPanicWhenStateDoesNotExist() {
stakingKeeper := newFakeStakingKeeper()
suite.keeper = suite.NewKeeper(&fakeParamSubspace{}, nil, nil, nil, nil, stakingKeeper, nil, nil, nil, nil)
period := types.NewMultiRewardPeriod(
true,
types.BondDenom,
time.Unix(0, 0), // ensure the test is within start and end times
distantFuture,
cs(),
)
accrualTime := time.Date(1998, 1, 1, 0, 0, 0, 0, time.UTC)
suite.ctx = suite.ctx.WithBlockTime(accrualTime)
// Accumulate with no source shares and no rewards per second will result in no increment to the indexes.
// No increment and no previous indexes stored, results in an updated of nil. Setting this in the state panics.
// Check there is no panic.
suite.NotPanics(func() {
suite.keeper.AccumulateDelegatorRewards(suite.ctx, period)
})
suite.storedTimeEquals(types.BondDenom, accrualTime)
suite.storedIndexesEqual(types.BondDenom, nil)
}
func (suite *AccumulateDelegatorRewardsTests) TestNoAccumulationWhenBeforeStartTime() {
stakingKeeper := newFakeStakingKeeper().addBondedTokens(1e6)
suite.keeper = suite.NewKeeper(&fakeParamSubspace{}, nil, nil, nil, nil, stakingKeeper, nil, nil, nil, nil)
previousIndexes := types.MultiRewardIndexes{
{
CollateralType: types.BondDenom,
RewardIndexes: types.RewardIndexes{
{
CollateralType: "hard",
RewardFactor: d("0.02"),
},
{
CollateralType: "ukava",
RewardFactor: d("0.04"),
},
},
},
}
suite.storeGlobalDelegatorIndexes(previousIndexes)
previousAccrualTime := time.Date(1998, 1, 1, 0, 0, 0, 0, time.UTC)
suite.keeper.SetPreviousDelegatorRewardAccrualTime(suite.ctx, types.BondDenom, previousAccrualTime)
firstAccrualTime := previousAccrualTime.Add(10 * time.Second)
period := types.NewMultiRewardPeriod(
true,
types.BondDenom,
firstAccrualTime.Add(time.Nanosecond), // start time after accrual time
distantFuture,
cs(c("hard", 2000), c("ukava", 1000)),
)
suite.ctx = suite.ctx.WithBlockTime(firstAccrualTime)
suite.keeper.AccumulateDelegatorRewards(suite.ctx, period)
// The accrual time should be updated, but the indexes unchanged
suite.storedTimeEquals(types.BondDenom, firstAccrualTime)
expectedIndexes, f := previousIndexes.Get(types.BondDenom)
suite.True(f)
suite.storedIndexesEqual(types.BondDenom, expectedIndexes)
}
func (suite *AccumulateDelegatorRewardsTests) TestPanicWhenCurrentTimeLessThanPrevious() {
stakingKeeper := newFakeStakingKeeper().addBondedTokens(1e6)
suite.keeper = suite.NewKeeper(&fakeParamSubspace{}, nil, nil, nil, nil, stakingKeeper, nil, nil, nil, nil)
previousAccrualTime := time.Date(1998, 1, 1, 0, 0, 0, 0, time.UTC)
suite.keeper.SetPreviousDelegatorRewardAccrualTime(suite.ctx, types.BondDenom, previousAccrualTime)
firstAccrualTime := time.Time{}
period := types.NewMultiRewardPeriod(
true,
types.BondDenom,
time.Time{}, // start time after accrual time
distantFuture,
cs(c("hard", 2000), c("ukava", 1000)),
)
suite.ctx = suite.ctx.WithBlockTime(firstAccrualTime)
suite.Panics(func() {
suite.keeper.AccumulateDelegatorRewards(suite.ctx, period)
})
}