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

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package keeper_test
import (
"testing"
"time"
sdk "github.com/cosmos/cosmos-sdk/types"
proposaltypes "github.com/cosmos/cosmos-sdk/x/params/types/proposal"
"github.com/stretchr/testify/suite"
tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
"github.com/kava-labs/kava/app"
cdpkeeper "github.com/kava-labs/kava/x/cdp/keeper"
cdptypes "github.com/kava-labs/kava/x/cdp/types"
"github.com/kava-labs/kava/x/incentive/keeper"
"github.com/kava-labs/kava/x/incentive/testutil"
"github.com/kava-labs/kava/x/incentive/types"
kavadisttypes "github.com/kava-labs/kava/x/kavadist/types"
)
type USDXIntegrationTests struct {
testutil.IntegrationTester
genesisTime time.Time
addrs []sdk.AccAddress
}
func TestUSDXIntegration(t *testing.T) {
suite.Run(t, new(USDXIntegrationTests))
}
// SetupTest is run automatically before each suite test
func (suite *USDXIntegrationTests) SetupTest() {
_, suite.addrs = app.GeneratePrivKeyAddressPairs(5)
suite.genesisTime = time.Date(2020, 12, 15, 14, 0, 0, 0, time.UTC)
}
func (suite *USDXIntegrationTests) ProposeAndVoteOnNewRewardPeriods(committeeID uint64, voter sdk.AccAddress, newPeriods types.RewardPeriods) {
suite.ProposeAndVoteOnNewParams(
voter,
committeeID,
[]proposaltypes.ParamChange{{
Subspace: types.ModuleName,
Key: string(types.KeyUSDXMintingRewardPeriods),
Value: string(types.ModuleCdc.LegacyAmino.MustMarshalJSON(newPeriods)),
}})
}
func (suite *USDXIntegrationTests) TestSingleUserAccumulatesRewardsAfterSyncing() {
userA := suite.addrs[0]
authBulder := app.NewAuthBankGenesisBuilder().
WithSimpleModuleAccount(kavadisttypes.ModuleName, cs(c(types.USDXMintingRewardDenom, 1e18))). // Fill kavadist with enough coins to pay out any reward
WithSimpleAccount(userA, cs(c("bnb", 1e12))) // give the user some coins
incentBuilder := testutil.NewIncentiveGenesisBuilder().
WithGenesisTime(suite.genesisTime).
WithMultipliers(types.MultipliersPerDenoms{{
Denom: types.USDXMintingRewardDenom,
Multipliers: types.Multipliers{types.NewMultiplier("large", 12, d("1.0"))}, // keep payout at 1.0 to make maths easier
}}).
WithSimpleUSDXRewardPeriod("bnb-a", c(types.USDXMintingRewardDenom, 1e6))
suite.SetApp()
suite.WithGenesisTime(suite.genesisTime)
suite.StartChain(
NewPricefeedGenStateMultiFromTime(suite.App.AppCodec(), suite.genesisTime),
NewCDPGenStateMulti(suite.App.AppCodec()),
authBulder.BuildMarshalled(suite.App.AppCodec()),
incentBuilder.BuildMarshalled(suite.App.AppCodec()),
)
// User creates a CDP to begin earning rewards.
suite.NoError(
suite.DeliverMsgCreateCDP(userA, c("bnb", 1e10), c(cdptypes.DefaultStableDenom, 1e9), "bnb-a"),
)
// Let time pass to accumulate interest on the deposit
// Use one long block instead of many to reduce any rounding errors, and speed up tests.
suite.NextBlockAfter(1e6 * time.Second) // about 12 days
// User repays and borrows just to sync their CDP
suite.NoError(
suite.DeliverCDPMsgRepay(userA, "bnb-a", c(cdptypes.DefaultStableDenom, 1)),
)
suite.NoError(
suite.DeliverCDPMsgBorrow(userA, "bnb-a", c(cdptypes.DefaultStableDenom, 1)),
)
// Accumulate more rewards.
// The user still has the same percentage of all CDP debt (100%) so their rewards should be the same as in the previous block.
suite.NextBlockAfter(1e6 * time.Second) // about 12 days
// User claims all their rewards
msg := types.NewMsgClaimUSDXMintingReward(userA.String(), "large")
suite.NoError(suite.DeliverIncentiveMsg(&msg))
// The users has always had 100% of cdp debt, so they should receive all rewards for the previous two blocks.
// Total rewards for each block is block duration * rewards per second
accuracy := 1e-18 // using a very high accuracy to flag future small calculation changes
suite.BalanceInEpsilon(userA, cs(c("bnb", 1e12-1e10), c(cdptypes.DefaultStableDenom, 1e9), c(types.USDXMintingRewardDenom, 2*1e6*1e6)), accuracy)
}
func (suite *USDXIntegrationTests) TestSingleUserAccumulatesRewardsWithoutSyncing() {
user := suite.addrs[0]
initialCollateral := c("bnb", 1e9)
authBuilder := app.NewAuthBankGenesisBuilder().
WithSimpleModuleAccount(kavadisttypes.ModuleName, cs(c(types.USDXMintingRewardDenom, 1e18))). // Fill kavadist with enough coins to pay out any reward
WithSimpleAccount(user, cs(initialCollateral))
collateralType := "bnb-a"
incentBuilder := testutil.NewIncentiveGenesisBuilder().
WithGenesisTime(suite.genesisTime).
WithMultipliers(types.MultipliersPerDenoms{{
Denom: types.USDXMintingRewardDenom,
Multipliers: types.Multipliers{types.NewMultiplier("large", 12, d("1.0"))}, // keep payout at 1.0 to make maths easier
}}).
WithSimpleUSDXRewardPeriod(collateralType, c(types.USDXMintingRewardDenom, 1e6))
suite.SetApp()
suite.WithGenesisTime(suite.genesisTime)
suite.StartChain(
authBuilder.BuildMarshalled(suite.App.AppCodec()),
NewPricefeedGenStateMultiFromTime(suite.App.AppCodec(), suite.genesisTime),
NewCDPGenStateMulti(suite.App.AppCodec()),
incentBuilder.BuildMarshalled(suite.App.AppCodec()),
)
// Setup cdp state containing one CDP
suite.NoError(
suite.DeliverMsgCreateCDP(user, initialCollateral, c("usdx", 1e8), collateralType),
)
// Skip ahead a few blocks blocks to accumulate both interest and usdx reward for the cdp
// Don't sync the CDP between the blocks
suite.NextBlockAfter(1e6 * time.Second) // about 12 days
suite.NextBlockAfter(1e6 * time.Second)
suite.NextBlockAfter(1e6 * time.Second)
msg := types.NewMsgClaimUSDXMintingReward(user.String(), "large")
suite.NoError(suite.DeliverIncentiveMsg(&msg))
// The users has always had 100% of cdp debt, so they should receive all rewards for the previous two blocks.
// Total rewards for each block is block duration * rewards per second
accuracy := 1e-18 // using a very high accuracy to flag future small calculation changes
suite.BalanceInEpsilon(user, cs(c(cdptypes.DefaultStableDenom, 1e8), c(types.USDXMintingRewardDenom, 3*1e6*1e6)), accuracy)
}
func (suite *USDXIntegrationTests) TestReinstatingRewardParamsDoesNotTriggerOverPayments() {
userA := suite.addrs[0]
userB := suite.addrs[1]
authBuilder := app.NewAuthBankGenesisBuilder().
WithSimpleModuleAccount(kavadisttypes.ModuleName, cs(c(types.USDXMintingRewardDenom, 1e18))). // Fill kavadist with enough coins to pay out any reward
WithSimpleAccount(userA, cs(c("bnb", 1e10))).
WithSimpleAccount(userB, cs(c("bnb", 1e10)))
incentBuilder := testutil.NewIncentiveGenesisBuilder().
WithGenesisTime(suite.genesisTime).
WithMultipliers(types.MultipliersPerDenoms{{
Denom: types.USDXMintingRewardDenom,
Multipliers: types.Multipliers{types.NewMultiplier("large", 12, d("1.0"))}, // keep payout at 1.0 to make maths easier
}}).
WithSimpleUSDXRewardPeriod("bnb-a", c(types.USDXMintingRewardDenom, 1e6))
suite.SetApp()
suite.WithGenesisTime(suite.genesisTime)
suite.StartChain(
authBuilder.BuildMarshalled(suite.App.AppCodec()),
NewPricefeedGenStateMultiFromTime(suite.App.AppCodec(), suite.genesisTime),
NewCDPGenStateMulti(suite.App.AppCodec()),
incentBuilder.BuildMarshalled(suite.App.AppCodec()),
NewCommitteeGenesisState(suite.App.AppCodec(), 0, userA), // create a committtee to change params
)
// Accumulate some CDP rewards, requires creating a cdp so the total borrowed isn't 0.
suite.NoError(
suite.DeliverMsgCreateCDP(userA, c("bnb", 1e10), c("usdx", 1e9), "bnb-a"),
)
suite.NextBlockAfter(1e6 * time.Second)
// Remove the USDX reward period
suite.ProposeAndVoteOnNewRewardPeriods(0, userA, types.RewardPeriods{})
// next block so proposal is enacted
suite.NextBlockAfter(1 * time.Second)
// Create a CDP when there is no reward periods. In a previous version the claim object would not be created, leading to the bug.
// Withdraw the same amount of usdx as the first cdp currently has. This make the reward maths easier, as rewards will be split 50:50 between each cdp.
firstCDP, f := suite.App.GetCDPKeeper().GetCdpByOwnerAndCollateralType(suite.Ctx, userA, "bnb-a")
suite.True(f)
firstCDPTotalPrincipal := firstCDP.GetTotalPrincipal()
suite.NoError(
suite.DeliverMsgCreateCDP(userB, c("bnb", 1e10), firstCDPTotalPrincipal, "bnb-a"),
)
// Add back the reward period
suite.ProposeAndVoteOnNewRewardPeriods(0, userA,
types.RewardPeriods{types.NewRewardPeriod(
true,
"bnb-a",
suite.Ctx.BlockTime(), // start accumulating again from this block
suite.genesisTime.Add(365*24*time.Hour),
c(types.USDXMintingRewardDenom, 1e6),
)},
)
// next block so proposal is enacted
suite.NextBlockAfter(1 * time.Second)
// Sync the cdp and claim by borrowing a bit
// In a previous version this would create the cdp with incorrect indexes, leading to overpayment.
suite.NoError(
suite.DeliverCDPMsgBorrow(userB, "bnb-a", c(cdptypes.DefaultStableDenom, 1)),
)
// Claim rewards
msg := types.NewMsgClaimUSDXMintingReward(userB.String(), "large")
suite.NoError(suite.DeliverIncentiveMsg(&msg))
// The cdp had half the total borrows for a 1s block. So should earn half the rewards for that block
suite.BalanceInEpsilon(
userB,
cs(firstCDPTotalPrincipal.Add(c(cdptypes.DefaultStableDenom, 1)), c(types.USDXMintingRewardDenom, 0.5*1e6)),
1e-18, // using very high accuracy to catch small changes to the calculations
)
}
// Test suite used for all keeper tests
type USDXRewardsTestSuite struct {
suite.Suite
keeper keeper.Keeper
cdpKeeper cdpkeeper.Keeper
app app.TestApp
ctx sdk.Context
genesisTime time.Time
addrs []sdk.AccAddress
}
// SetupTest is run automatically before each suite test
func (suite *USDXRewardsTestSuite) SetupTest() {
config := sdk.GetConfig()
app.SetBech32AddressPrefixes(config)
_, suite.addrs = app.GeneratePrivKeyAddressPairs(5)
suite.genesisTime = time.Date(2020, 12, 15, 14, 0, 0, 0, time.UTC)
}
func (suite *USDXRewardsTestSuite) SetupApp() {
suite.app = app.NewTestApp()
suite.keeper = suite.app.GetIncentiveKeeper()
suite.cdpKeeper = suite.app.GetCDPKeeper()
suite.ctx = suite.app.NewContext(true, tmproto.Header{Height: 1, Time: suite.genesisTime})
}
func (suite *USDXRewardsTestSuite) SetupWithGenState(authBuilder *app.AuthBankGenesisBuilder, incentBuilder testutil.IncentiveGenesisBuilder) {
suite.SetupApp()
suite.app.InitializeFromGenesisStatesWithTime(
suite.genesisTime,
authBuilder.BuildMarshalled(suite.app.AppCodec()),
NewPricefeedGenStateMultiFromTime(suite.app.AppCodec(), suite.genesisTime),
NewCDPGenStateMulti(suite.app.AppCodec()),
incentBuilder.BuildMarshalled(suite.app.AppCodec()),
)
}
func (suite *USDXRewardsTestSuite) TestAccumulateUSDXMintingRewards() {
type args struct {
ctype string
rewardsPerSecond sdk.Coin
initialTotalPrincipal sdk.Coin
timeElapsed int
expectedRewardFactor sdk.Dec
}
type test struct {
name string
args args
}
testCases := []test{
{
"7 seconds",
args{
ctype: "bnb-a",
rewardsPerSecond: c("ukava", 122354),
initialTotalPrincipal: c("usdx", 1000000000000),
timeElapsed: 7,
expectedRewardFactor: d("0.000000856478000000"),
},
},
{
"1 day",
args{
ctype: "bnb-a",
rewardsPerSecond: c("ukava", 122354),
initialTotalPrincipal: c("usdx", 1000000000000),
timeElapsed: 86400,
expectedRewardFactor: d("0.0105713856"),
},
},
{
"0 seconds",
args{
ctype: "bnb-a",
rewardsPerSecond: c("ukava", 122354),
initialTotalPrincipal: c("usdx", 1000000000000),
timeElapsed: 0,
expectedRewardFactor: d("0.0"),
},
},
}
for _, tc := range testCases {
suite.Run(tc.name, func() {
incentBuilder := testutil.NewIncentiveGenesisBuilder().WithGenesisTime(suite.genesisTime).WithSimpleUSDXRewardPeriod(tc.args.ctype, tc.args.rewardsPerSecond)
suite.SetupWithGenState(app.NewAuthBankGenesisBuilder(), incentBuilder)
// setup cdp state
suite.cdpKeeper.SetTotalPrincipal(suite.ctx, tc.args.ctype, cdptypes.DefaultStableDenom, tc.args.initialTotalPrincipal.Amount)
updatedBlockTime := suite.ctx.BlockTime().Add(time.Duration(int(time.Second) * tc.args.timeElapsed))
suite.ctx = suite.ctx.WithBlockTime(updatedBlockTime)
rewardPeriod, found := suite.keeper.GetUSDXMintingRewardPeriod(suite.ctx, tc.args.ctype)
suite.Require().True(found)
suite.keeper.AccumulateUSDXMintingRewards(suite.ctx, rewardPeriod)
rewardFactor, _ := suite.keeper.GetUSDXMintingRewardFactor(suite.ctx, tc.args.ctype)
suite.Require().Equal(tc.args.expectedRewardFactor, rewardFactor)
})
}
}
func (suite *USDXRewardsTestSuite) TestSynchronizeUSDXMintingReward() {
type args struct {
ctype string
rewardsPerSecond sdk.Coin
initialCollateral sdk.Coin
initialPrincipal sdk.Coin
blockTimes []int
expectedRewardFactor sdk.Dec
expectedRewards sdk.Coin
}
type test struct {
name string
args args
}
testCases := []test{
{
"10 blocks",
args{
ctype: "bnb-a",
rewardsPerSecond: c("ukava", 122354),
initialCollateral: c("bnb", 1000000000000),
initialPrincipal: c("usdx", 10000000000),
blockTimes: []int{10, 10, 10, 10, 10, 10, 10, 10, 10, 10},
expectedRewardFactor: d("0.001223540000000000"),
expectedRewards: c("ukava", 12235400),
},
},
{
"10 blocks - long block time",
args{
ctype: "bnb-a",
rewardsPerSecond: c("ukava", 122354),
initialCollateral: c("bnb", 1000000000000),
initialPrincipal: c("usdx", 10000000000),
blockTimes: []int{86400, 86400, 86400, 86400, 86400, 86400, 86400, 86400, 86400, 86400},
expectedRewardFactor: d("10.57138560000000000"),
expectedRewards: c("ukava", 105713856000),
},
},
}
for _, tc := range testCases {
suite.Run(tc.name, func() {
authBuilder := app.NewAuthBankGenesisBuilder().WithSimpleAccount(suite.addrs[0], cs(tc.args.initialCollateral))
incentBuilder := testutil.NewIncentiveGenesisBuilder().WithGenesisTime(suite.genesisTime).WithSimpleUSDXRewardPeriod(tc.args.ctype, tc.args.rewardsPerSecond)
suite.SetupWithGenState(authBuilder, incentBuilder)
// setup cdp state
err := suite.cdpKeeper.AddCdp(suite.ctx, suite.addrs[0], tc.args.initialCollateral, tc.args.initialPrincipal, tc.args.ctype)
suite.Require().NoError(err)
claim, found := suite.keeper.GetUSDXMintingClaim(suite.ctx, suite.addrs[0])
suite.Require().True(found)
suite.Require().Equal(sdk.ZeroDec(), claim.RewardIndexes[0].RewardFactor)
var timeElapsed int
previousBlockTime := suite.ctx.BlockTime()
for _, t := range tc.args.blockTimes {
timeElapsed += t
updatedBlockTime := previousBlockTime.Add(time.Duration(int(time.Second) * t))
previousBlockTime = updatedBlockTime
blockCtx := suite.ctx.WithBlockTime(updatedBlockTime)
rewardPeriod, found := suite.keeper.GetUSDXMintingRewardPeriod(blockCtx, tc.args.ctype)
suite.Require().True(found)
suite.keeper.AccumulateUSDXMintingRewards(blockCtx, rewardPeriod)
}
updatedBlockTime := suite.ctx.BlockTime().Add(time.Duration(int(time.Second) * timeElapsed))
suite.ctx = suite.ctx.WithBlockTime(updatedBlockTime)
cdp, found := suite.cdpKeeper.GetCdpByOwnerAndCollateralType(suite.ctx, suite.addrs[0], tc.args.ctype)
suite.Require().True(found)
suite.Require().NotPanics(func() {
suite.keeper.SynchronizeUSDXMintingReward(suite.ctx, cdp)
})
rewardFactor, _ := suite.keeper.GetUSDXMintingRewardFactor(suite.ctx, tc.args.ctype)
suite.Require().Equal(tc.args.expectedRewardFactor, rewardFactor)
claim, found = suite.keeper.GetUSDXMintingClaim(suite.ctx, suite.addrs[0])
suite.Require().True(found)
suite.Require().Equal(tc.args.expectedRewardFactor, claim.RewardIndexes[0].RewardFactor)
suite.Require().Equal(tc.args.expectedRewards, claim.Reward)
})
}
}
func (suite *USDXRewardsTestSuite) TestSimulateUSDXMintingRewardSynchronization() {
type args struct {
ctype string
rewardsPerSecond sdk.Coin
initialCollateral sdk.Coin
initialPrincipal sdk.Coin
blockTimes []int
expectedRewardFactor sdk.Dec
expectedRewards sdk.Coin
}
type test struct {
name string
args args
}
testCases := []test{
{
"10 blocks",
args{
ctype: "bnb-a",
rewardsPerSecond: c("ukava", 122354),
initialCollateral: c("bnb", 1000000000000),
initialPrincipal: c("usdx", 10000000000),
blockTimes: []int{10, 10, 10, 10, 10, 10, 10, 10, 10, 10},
expectedRewardFactor: d("0.001223540000000000"),
expectedRewards: c("ukava", 12235400),
},
},
{
"10 blocks - long block time",
args{
ctype: "bnb-a",
rewardsPerSecond: c("ukava", 122354),
initialCollateral: c("bnb", 1000000000000),
initialPrincipal: c("usdx", 10000000000),
blockTimes: []int{86400, 86400, 86400, 86400, 86400, 86400, 86400, 86400, 86400, 86400},
expectedRewardFactor: d("10.57138560000000000"),
expectedRewards: c("ukava", 105713856000),
},
},
}
for _, tc := range testCases {
suite.Run(tc.name, func() {
authBuilder := app.NewAuthBankGenesisBuilder().WithSimpleAccount(suite.addrs[0], cs(tc.args.initialCollateral))
incentBuilder := testutil.NewIncentiveGenesisBuilder().WithGenesisTime(suite.genesisTime).WithSimpleUSDXRewardPeriod(tc.args.ctype, tc.args.rewardsPerSecond)
suite.SetupWithGenState(authBuilder, incentBuilder)
// setup cdp state
err := suite.cdpKeeper.AddCdp(suite.ctx, suite.addrs[0], tc.args.initialCollateral, tc.args.initialPrincipal, tc.args.ctype)
suite.Require().NoError(err)
claim, found := suite.keeper.GetUSDXMintingClaim(suite.ctx, suite.addrs[0])
suite.Require().True(found)
suite.Require().Equal(sdk.ZeroDec(), claim.RewardIndexes[0].RewardFactor)
var timeElapsed int
previousBlockTime := suite.ctx.BlockTime()
for _, t := range tc.args.blockTimes {
timeElapsed += t
updatedBlockTime := previousBlockTime.Add(time.Duration(int(time.Second) * t))
previousBlockTime = updatedBlockTime
blockCtx := suite.ctx.WithBlockTime(updatedBlockTime)
rewardPeriod, found := suite.keeper.GetUSDXMintingRewardPeriod(blockCtx, tc.args.ctype)
suite.Require().True(found)
suite.keeper.AccumulateUSDXMintingRewards(blockCtx, rewardPeriod)
}
updatedBlockTime := suite.ctx.BlockTime().Add(time.Duration(int(time.Second) * timeElapsed))
suite.ctx = suite.ctx.WithBlockTime(updatedBlockTime)
claim, found = suite.keeper.GetUSDXMintingClaim(suite.ctx, suite.addrs[0])
suite.Require().True(found)
suite.Require().Equal(claim.RewardIndexes[0].RewardFactor, sdk.ZeroDec())
suite.Require().Equal(claim.Reward, sdk.NewCoin("ukava", sdk.ZeroInt()))
updatedClaim := suite.keeper.SimulateUSDXMintingSynchronization(suite.ctx, claim)
suite.Require().Equal(tc.args.expectedRewardFactor, updatedClaim.RewardIndexes[0].RewardFactor)
suite.Require().Equal(tc.args.expectedRewards, updatedClaim.Reward)
})
}
}
func TestUSDXRewardsTestSuite(t *testing.T) {
suite.Run(t, new(USDXRewardsTestSuite))
}