mirror of
https://github.com/0glabs/0g-chain.git
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dc6f5c6c83
* extract borrow sync logic into separate func * fix borrow reward calculations Use the normalized borrow as the source shares in reward calculations. * extract supply sync logic into separate func * prepare to fix supply reward calculations * fix deposit reward calculations Use the normalized deposit as the source shares in reward calculations. * extract usdx sync logic into separate func * prepare to fix usdx reward calculations * fix cdp reward calculations Use the normalized cdp debt as the source shares in reward calculations. * fix compile error from messed up partial stage * Fix incentive usdx reward bug (#976) * minor test refactors * fix overpayment bug Init methods should not read params. Add test to cover bug * fix typos
299 lines
9.4 KiB
Go
299 lines
9.4 KiB
Go
package keeper_test
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import (
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"testing"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/stretchr/testify/suite"
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cdptypes "github.com/kava-labs/kava/x/cdp/types"
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"github.com/kava-labs/kava/x/incentive/types"
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)
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// usdxRewardsUnitTester contains common methods for running unit tests for keeper methods related to the USDX minting rewards
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type usdxRewardsUnitTester struct {
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unitTester
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}
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func (suite *usdxRewardsUnitTester) storeGlobalUSDXIndexes(indexes types.RewardIndexes) {
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for _, ri := range indexes {
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suite.keeper.SetUSDXMintingRewardFactor(suite.ctx, ri.CollateralType, ri.RewardFactor)
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}
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}
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func (suite *usdxRewardsUnitTester) storeClaim(claim types.USDXMintingClaim) {
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suite.keeper.SetUSDXMintingClaim(suite.ctx, claim)
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}
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type InitializeUSDXMintingClaimTests struct {
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usdxRewardsUnitTester
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}
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func TestInitializeUSDXMintingClaims(t *testing.T) {
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suite.Run(t, new(InitializeUSDXMintingClaimTests))
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}
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func (suite *InitializeUSDXMintingClaimTests) TestClaimIndexIsSetWhenClaimDoesNotExist() {
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collateralType := "bnb-a"
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cdp := NewCDPBuilder(arbitraryAddress(), collateralType).Build()
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globalIndexes := types.RewardIndexes{{
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CollateralType: collateralType,
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RewardFactor: d("0.2"),
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}}
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suite.storeGlobalUSDXIndexes(globalIndexes)
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suite.keeper.InitializeUSDXMintingClaim(suite.ctx, cdp)
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syncedClaim, f := suite.keeper.GetUSDXMintingClaim(suite.ctx, cdp.Owner)
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suite.True(f)
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suite.Equal(globalIndexes, syncedClaim.RewardIndexes)
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}
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func (suite *InitializeUSDXMintingClaimTests) TestClaimIndexIsSetWhenClaimExists() {
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collateralType := "bnb-a"
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claim := types.USDXMintingClaim{
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BaseClaim: types.BaseClaim{
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Owner: arbitraryAddress(),
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},
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RewardIndexes: types.RewardIndexes{{
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CollateralType: collateralType,
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RewardFactor: d("0.1"),
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}},
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}
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suite.storeClaim(claim)
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globalIndexes := types.RewardIndexes{{
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CollateralType: collateralType,
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RewardFactor: d("0.2"),
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}}
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suite.storeGlobalUSDXIndexes(globalIndexes)
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cdp := NewCDPBuilder(claim.Owner, collateralType).Build()
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suite.keeper.InitializeUSDXMintingClaim(suite.ctx, cdp)
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syncedClaim, _ := suite.keeper.GetUSDXMintingClaim(suite.ctx, cdp.Owner)
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suite.Equal(globalIndexes, syncedClaim.RewardIndexes)
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}
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type SynchronizeUSDXMintingRewardTests struct {
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usdxRewardsUnitTester
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}
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func TestSynchronizeUSDXMintingReward(t *testing.T) {
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suite.Run(t, new(SynchronizeUSDXMintingRewardTests))
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}
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func (suite *SynchronizeUSDXMintingRewardTests) TestRewardUnchangedWhenGlobalIndexesUnchanged() {
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unchangingRewardIndexes := nonEmptyRewardIndexes
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collateralType := extractFirstCollateralType(unchangingRewardIndexes)
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claim := types.USDXMintingClaim{
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BaseClaim: types.BaseClaim{
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Owner: arbitraryAddress(),
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Reward: c(types.USDXMintingRewardDenom, 0),
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},
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RewardIndexes: unchangingRewardIndexes,
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}
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suite.storeClaim(claim)
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suite.storeGlobalUSDXIndexes(unchangingRewardIndexes)
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cdp := NewCDPBuilder(claim.Owner, collateralType).WithSourceShares(1e12).Build()
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suite.keeper.SynchronizeUSDXMintingReward(suite.ctx, cdp)
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syncedClaim, _ := suite.keeper.GetUSDXMintingClaim(suite.ctx, claim.Owner)
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suite.Equal(claim.Reward, syncedClaim.Reward)
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}
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func (suite *SynchronizeUSDXMintingRewardTests) TestRewardIsIncrementedWhenGlobalIndexIncreased() {
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collateralType := "bnb-a"
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claim := types.USDXMintingClaim{
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BaseClaim: types.BaseClaim{
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Owner: arbitraryAddress(),
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Reward: c(types.USDXMintingRewardDenom, 0),
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},
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RewardIndexes: types.RewardIndexes{
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{
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CollateralType: collateralType,
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RewardFactor: d("0.1"),
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},
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},
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}
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suite.storeClaim(claim)
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globalIndexes := types.RewardIndexes{
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{
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CollateralType: collateralType,
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RewardFactor: d("0.2"),
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},
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}
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suite.storeGlobalUSDXIndexes(globalIndexes)
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cdp := NewCDPBuilder(claim.Owner, collateralType).WithSourceShares(1e12).Build()
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suite.keeper.SynchronizeUSDXMintingReward(suite.ctx, cdp)
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syncedClaim, _ := suite.keeper.GetUSDXMintingClaim(suite.ctx, claim.Owner)
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// reward is ( new index - old index ) * cdp.TotalPrincipal
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suite.Equal(c(types.USDXMintingRewardDenom, 1e11), syncedClaim.Reward)
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}
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func (suite *SynchronizeUSDXMintingRewardTests) TestClaimIndexIsUpdatedWhenGlobalIndexIncreased() {
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claimsRewardIndexes := nonEmptyRewardIndexes
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collateralType := extractFirstCollateralType(claimsRewardIndexes)
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claim := types.USDXMintingClaim{
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BaseClaim: types.BaseClaim{
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Owner: arbitraryAddress(),
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Reward: c(types.USDXMintingRewardDenom, 0),
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},
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RewardIndexes: claimsRewardIndexes,
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}
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suite.storeClaim(claim)
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globalIndexes := increaseRewardFactors(claimsRewardIndexes)
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suite.storeGlobalUSDXIndexes(globalIndexes)
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cdp := NewCDPBuilder(claim.Owner, collateralType).Build()
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suite.keeper.SynchronizeUSDXMintingReward(suite.ctx, cdp)
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syncedClaim, _ := suite.keeper.GetUSDXMintingClaim(suite.ctx, claim.Owner)
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// Only the claim's index for `collateralType` should have been changed
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i, _ := globalIndexes.Get(collateralType)
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expectedIndexes := claimsRewardIndexes.With(collateralType, i)
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suite.Equal(expectedIndexes, syncedClaim.RewardIndexes)
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}
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func (suite *SynchronizeUSDXMintingRewardTests) TestClaimIndexIsUpdatedWhenNewRewardAddedAndClaimAlreadyExists() {
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claimsRewardIndexes := types.RewardIndexes{
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{
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CollateralType: "bnb-a",
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RewardFactor: d("0.1"),
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},
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{
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CollateralType: "busd-b",
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RewardFactor: d("0.4"),
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},
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}
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newRewardIndex := types.NewRewardIndex("xrp-a", d("0.0001"))
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claim := types.USDXMintingClaim{
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BaseClaim: types.BaseClaim{
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Owner: arbitraryAddress(),
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Reward: c(types.USDXMintingRewardDenom, 0),
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},
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RewardIndexes: claimsRewardIndexes,
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}
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suite.storeClaim(claim)
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globalIndexes := increaseRewardFactors(claimsRewardIndexes)
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globalIndexes = append(globalIndexes, newRewardIndex)
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suite.storeGlobalUSDXIndexes(globalIndexes)
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cdp := NewCDPBuilder(claim.Owner, newRewardIndex.CollateralType).Build()
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suite.keeper.SynchronizeUSDXMintingReward(suite.ctx, cdp)
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syncedClaim, _ := suite.keeper.GetUSDXMintingClaim(suite.ctx, claim.Owner)
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// Only the claim's index for `collateralType` should have been changed
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expectedIndexes := claimsRewardIndexes.With(newRewardIndex.CollateralType, newRewardIndex.RewardFactor)
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suite.Equal(expectedIndexes, syncedClaim.RewardIndexes)
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}
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func (suite *SynchronizeUSDXMintingRewardTests) TestClaimIsUnchangedWhenGlobalFactorMissing() {
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claimsRewardIndexes := nonEmptyRewardIndexes
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claim := types.USDXMintingClaim{
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BaseClaim: types.BaseClaim{
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Owner: arbitraryAddress(),
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Reward: c(types.USDXMintingRewardDenom, 0),
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},
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RewardIndexes: claimsRewardIndexes,
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}
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suite.storeClaim(claim)
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// don't store any reward indexes
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// create a cdp with collateral type that doesn't exist in the claim's indexes, and does not have a corresponding global factor
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cdp := NewCDPBuilder(claim.Owner, "unrewardedcollateral").WithSourceShares(1e12).Build()
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suite.keeper.SynchronizeUSDXMintingReward(suite.ctx, cdp)
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syncedClaim, _ := suite.keeper.GetUSDXMintingClaim(suite.ctx, claim.Owner)
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suite.Equal(claim.RewardIndexes, syncedClaim.RewardIndexes)
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suite.Equal(claim.Reward, syncedClaim.Reward)
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}
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// CDPBuilder is a tool for creating a CDP in tests.
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// The builder inherits from cdp.CDP, so fields can be accessed directly if a helper method doesn't exist.
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type CDPBuilder struct {
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cdptypes.CDP
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}
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// NewCDPBuilder creates a CdpBuilder containing a CDP with owner and collateral type set.
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func NewCDPBuilder(owner sdk.AccAddress, collateralType string) CDPBuilder {
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return CDPBuilder{
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CDP: cdptypes.CDP{
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Owner: owner,
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Type: collateralType,
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// The zero value of Principal and AccumulatedFees (type sdk.Coin) is invalid as the denom is ""
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// Set them to the default denom, but with 0 amount.
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Principal: c(cdptypes.DefaultStableDenom, 0),
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AccumulatedFees: c(cdptypes.DefaultStableDenom, 0),
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// zero value of sdk.Dec causes nil pointer panics
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InterestFactor: sdk.OneDec(),
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}}
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}
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// Build assembles and returns the final deposit.
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func (builder CDPBuilder) Build() cdptypes.CDP { return builder.CDP }
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// WithSourceShares adds a principal amount and interest factor such that the source shares for this CDP is equal to specified.
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// With a factor of 1, the total principal is the source shares. This picks an arbitrary factor to ensure factors are accounted for in production code.
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func (builder CDPBuilder) WithSourceShares(shares int64) CDPBuilder {
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if !builder.GetTotalPrincipal().Amount.Equal(sdk.ZeroInt()) {
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panic("setting source shares on cdp with existing principal or fees not implemented")
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}
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if !(builder.InterestFactor.IsNil() || builder.InterestFactor.Equal(sdk.OneDec())) {
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panic("setting source shares on cdp with existing interest factor not implemented")
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}
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// pick arbitrary interest factor
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factor := sdk.NewInt(2)
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// Calculate deposit amount that would equal the requested source shares given the above factor.
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principal := sdk.NewInt(shares).Mul(factor)
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builder.Principal = sdk.NewCoin(cdptypes.DefaultStableDenom, principal)
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builder.InterestFactor = factor.ToDec()
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return builder
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}
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func (builder CDPBuilder) WithPrincipal(principal sdk.Int) CDPBuilder {
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builder.Principal = sdk.NewCoin(cdptypes.DefaultStableDenom, principal)
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return builder
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}
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var nonEmptyRewardIndexes = types.RewardIndexes{
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{
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CollateralType: "bnb-a",
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RewardFactor: d("0.1"),
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},
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{
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CollateralType: "busd-b",
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RewardFactor: d("0.4"),
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},
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}
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func extractFirstCollateralType(indexes types.RewardIndexes) string {
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if len(indexes) == 0 {
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panic("cannot extract a collateral type from 0 length RewardIndexes")
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}
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return indexes[0].CollateralType
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}
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