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

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package keeper_test
import (
"testing"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/stretchr/testify/suite"
"github.com/kava-labs/kava/x/incentive/types"
savingstypes "github.com/kava-labs/kava/x/savings/types"
)
// SynchronizeSavingsRewardTests runs unit tests for the keeper.SynchronizeSavingsReward method
type SynchronizeSavingsRewardTests struct {
unitTester
}
func TestSynchronizeSavingsReward(t *testing.T) {
suite.Run(t, new(SynchronizeSavingsRewardTests))
}
func (suite *SynchronizeSavingsRewardTests) TestClaimUpdatedWhenGlobalIndexesHaveIncreased() {
// This is the normal case
// Given some time has passed (meaning the global indexes have increased)
// When the claim is synced
// The user earns rewards for the time passed, and the claim indexes are updated
originalReward := arbitraryCoins()
denom := "test"
claim := types.SavingsClaim{
BaseMultiClaim: types.BaseMultiClaim{
Owner: arbitraryAddress(),
Reward: originalReward,
},
RewardIndexes: types.MultiRewardIndexes{
{
CollateralType: denom,
RewardIndexes: types.RewardIndexes{
{
CollateralType: "rewarddenom",
RewardFactor: d("1000.001"),
},
},
},
},
}
suite.storeSavingsClaim(claim)
globalIndexes := types.MultiRewardIndexes{
{
CollateralType: denom,
RewardIndexes: types.RewardIndexes{
{
CollateralType: "rewarddenom",
RewardFactor: d("2000.002"),
},
},
},
}
suite.storeGlobalSavingsIndexes(globalIndexes)
userShares := i(1e9)
deposit := savingstypes.NewDeposit(claim.Owner, sdk.NewCoins(sdk.NewCoin(denom, userShares)))
suite.keeper.SynchronizeSavingsReward(suite.ctx, deposit, []string{})
syncedClaim, _ := suite.keeper.GetSavingsClaim(suite.ctx, claim.Owner)
// indexes updated from global
suite.Equal(globalIndexes, syncedClaim.RewardIndexes)
// new reward is (new index - old index) * user shares
suite.Equal(
cs(c("rewarddenom", 1_000_001_000_000)).Add(originalReward...),
syncedClaim.Reward,
)
}
func (suite *SynchronizeSavingsRewardTests) TestClaimUnchangedWhenGlobalIndexesUnchanged() {
denom := "test"
unchangingIndexes := types.MultiRewardIndexes{
{
CollateralType: denom,
RewardIndexes: types.RewardIndexes{
{
CollateralType: "rewarddenom",
RewardFactor: d("1000.001"),
},
},
},
}
claim := types.SavingsClaim{
BaseMultiClaim: types.BaseMultiClaim{
Owner: arbitraryAddress(),
Reward: arbitraryCoins(),
},
RewardIndexes: unchangingIndexes,
}
suite.storeSavingsClaim(claim)
suite.storeGlobalSavingsIndexes(unchangingIndexes)
userShares := i(1e9)
deposit := savingstypes.NewDeposit(claim.Owner, sdk.NewCoins(sdk.NewCoin(denom, userShares)))
suite.keeper.SynchronizeSavingsReward(suite.ctx, deposit, []string{})
syncedClaim, _ := suite.keeper.GetSavingsClaim(suite.ctx, claim.Owner)
// claim should have the same rewards and indexes as before
suite.Equal(claim, syncedClaim)
}
func (suite *SynchronizeSavingsRewardTests) TestClaimUpdatedWhenNewRewardAdded() {
originalReward := arbitraryCoins()
newlyRewardedDenom := "newlyRewardedDenom"
claim := types.SavingsClaim{
BaseMultiClaim: types.BaseMultiClaim{
Owner: arbitraryAddress(),
Reward: originalReward,
},
RewardIndexes: types.MultiRewardIndexes{
{
CollateralType: "currentlyRewardedDenom",
RewardIndexes: types.RewardIndexes{
{
CollateralType: "reward",
RewardFactor: d("1000.001"),
},
},
},
},
}
suite.storeSavingsClaim(claim)
globalIndexes := types.MultiRewardIndexes{
{
CollateralType: "currentlyRewardedDenom",
RewardIndexes: types.RewardIndexes{
{
CollateralType: "reward",
RewardFactor: d("2000.002"),
},
},
},
{
CollateralType: newlyRewardedDenom,
RewardIndexes: types.RewardIndexes{
{
CollateralType: "otherreward",
// Indexes start at 0 when the reward is added by gov,
// so this represents the syncing happening some time later.
RewardFactor: d("1000.001"),
},
},
},
}
suite.storeGlobalSavingsIndexes(globalIndexes)
userShares := i(1e9)
deposit := savingstypes.NewDeposit(claim.Owner,
sdk.NewCoins(
sdk.NewCoin("currentlyRewardedDenom", userShares),
sdk.NewCoin(newlyRewardedDenom, userShares),
),
)
suite.keeper.SynchronizeSavingsReward(suite.ctx, deposit, []string{newlyRewardedDenom})
syncedClaim, _ := suite.keeper.GetSavingsClaim(suite.ctx, claim.Owner)
// the new indexes should be added to the claim and the old ones should be updated
suite.Equal(globalIndexes, syncedClaim.RewardIndexes)
// new reward is (new index - old index) * shares for the synced deposit
// The old index for `newlyrewarded` isn't in the claim, so it's added starting at 0 for calculating the reward.
suite.Equal(
cs(c("reward", 1_000_001_000_000)).Add(originalReward...),
syncedClaim.Reward,
)
}
func (suite *SynchronizeSavingsRewardTests) TestClaimUpdatedWhenNewRewardDenomAdded() {
// When a new reward coin is added (via gov) to an already rewarded denom (that the user has already deposited to), and the claim is synced;
// Then the user earns rewards for the time since the reward was added, and the new indexes are added.
originalReward := arbitraryCoins()
denom := "base"
claim := types.SavingsClaim{
BaseMultiClaim: types.BaseMultiClaim{
Owner: arbitraryAddress(),
Reward: originalReward,
},
RewardIndexes: types.MultiRewardIndexes{
{
CollateralType: denom,
RewardIndexes: types.RewardIndexes{
{
CollateralType: "reward",
RewardFactor: d("1000.001"),
},
},
},
},
}
suite.storeSavingsClaim(claim)
globalIndexes := types.MultiRewardIndexes{
{
CollateralType: denom,
RewardIndexes: types.RewardIndexes{
{
CollateralType: "reward",
RewardFactor: d("2000.002"),
},
{
CollateralType: "otherreward",
// Indexes start at 0 when the reward is added by gov,
// so this represents the syncing happening some time later.
RewardFactor: d("1000.001"),
},
},
},
}
suite.storeGlobalSavingsIndexes(globalIndexes)
userShares := i(1e9)
deposit := savingstypes.NewDeposit(claim.Owner, sdk.NewCoins(sdk.NewCoin(denom, userShares)))
suite.keeper.SynchronizeSavingsReward(suite.ctx, deposit, []string{})
syncedClaim, _ := suite.keeper.GetSavingsClaim(suite.ctx, claim.Owner)
// indexes should have the new reward denom added
suite.Equal(globalIndexes, syncedClaim.RewardIndexes)
// new reward is (new index - old index) * shares
// The old index for `otherreward` isn't in the claim, so it's added starting at 0 for calculating the reward.
suite.Equal(
cs(c("reward", 1_000_001_000_000), c("otherreward", 1_000_001_000_000)).Add(originalReward...),
syncedClaim.Reward,
)
}
func getDenoms(coins sdk.Coins) []string {
denoms := []string{}
for _, coin := range coins {
denoms = append(denoms, coin.Denom)
}
return denoms
}