mirror of
https://github.com/0glabs/0g-chain.git
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4c1524d7bc
* refactor begin blocker to single func * remove unused inflation keeper methods * refactor to private keeper methods * add testcase for failed mint due to invalid param * add testcase for GetStakingApy() * check for zero instead of empty * actually test super long block time * skip fund account for earn community proposals * test x/community keeper GetModuleAccountBalance * update x/kavamint begin block spec
217 lines
8.4 KiB
Go
217 lines
8.4 KiB
Go
package kavamint_test
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import (
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"testing"
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"time"
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sdk "github.com/cosmos/cosmos-sdk/types"
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authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
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"github.com/cosmos/cosmos-sdk/x/staking"
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"github.com/stretchr/testify/suite"
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communitytypes "github.com/kava-labs/kava/x/community/types"
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"github.com/kava-labs/kava/x/kavamint"
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"github.com/kava-labs/kava/x/kavamint/keeper"
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"github.com/kava-labs/kava/x/kavamint/testutil"
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"github.com/kava-labs/kava/x/kavamint/types"
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)
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type abciTestSuite struct {
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testutil.KavamintTestSuite
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}
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func (suite *abciTestSuite) SetupTest() {
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suite.KavamintTestSuite.SetupTest()
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}
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func (suite abciTestSuite) CheckModuleBalance(ctx sdk.Context, moduleName string, expectedAmount sdk.Int) {
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denom := suite.StakingKeeper.BondDenom(ctx)
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amount := suite.App.GetModuleAccountBalance(ctx, moduleName, denom)
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suite.Require().Equal(expectedAmount, amount)
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}
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func (suite *abciTestSuite) CheckFeeCollectorBalance(ctx sdk.Context, expectedAmount sdk.Int) {
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suite.CheckModuleBalance(ctx, authtypes.FeeCollectorName, expectedAmount)
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}
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func (suite *abciTestSuite) CheckKavamintBalance(ctx sdk.Context, expectedAmount sdk.Int) {
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suite.CheckModuleBalance(ctx, types.ModuleName, expectedAmount)
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}
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func (suite *abciTestSuite) CheckCommunityPoolBalance(ctx sdk.Context, expectedAmount sdk.Int) {
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suite.CheckModuleBalance(ctx, communitytypes.ModuleAccountName, expectedAmount)
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}
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func TestABCITestSuite(t *testing.T) {
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suite.Run(t, new(abciTestSuite))
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}
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func (suite *abciTestSuite) Test_BeginBlocker_MintsExpectedTokens() {
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testCases := []struct {
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name string
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blockTime uint64
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communityPoolInflation sdk.Dec
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stakingRewardsApy sdk.Dec
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bondedRatio sdk.Dec
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setup func()
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expCommunityPoolBalance sdk.Int
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expFeeCollectorBalance sdk.Int
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}{
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{
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name: "sanity check: a year of seconds mints total yearly inflation",
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blockTime: keeper.SecondsPerYear,
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communityPoolInflation: sdk.NewDecWithPrec(20, 2),
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stakingRewardsApy: sdk.NewDecWithPrec(20, 2),
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bondedRatio: sdk.NewDecWithPrec(50, 2),
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// 20% inflation on 1e10 tokens -> 2e9 minted
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expCommunityPoolBalance: sdk.NewInt(2e9),
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// 20% APY, 50% bonded (5e9) -> 1e9 minted
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expFeeCollectorBalance: sdk.NewInt(1e9),
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},
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{
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name: "mints staking rewards, handles 0 community pool inflation",
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blockTime: 6,
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communityPoolInflation: sdk.ZeroDec(),
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stakingRewardsApy: sdk.NewDecWithPrec(20, 2),
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bondedRatio: sdk.NewDecWithPrec(40, 2),
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expCommunityPoolBalance: sdk.ZeroInt(),
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// 20% APY for 6 seconds
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// bond ratio is 40%, so total supply * ratio = 1e10 * .4
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// https://www.wolframalpha.com/input?i2d=true&i=%5C%2840%29Power%5B%5C%2840%29Surd%5B1.20%2C31536000%5D%5C%2841%29%2C6%5D-1%5C%2841%29*1e10*.4
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// => 138.75 => truncated to 138 tokens.
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expFeeCollectorBalance: sdk.NewInt(138),
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},
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{
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name: "mints community pool inflation, handles 0 staking rewards",
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blockTime: 6,
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communityPoolInflation: sdk.NewDecWithPrec(80, 2),
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stakingRewardsApy: sdk.ZeroDec(),
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bondedRatio: sdk.NewDecWithPrec(40, 2),
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// 80% APY for 6 seconds
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// total supply = 1e10
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// https://www.wolframalpha.com/input?i2d=true&i=%5C%2840%29Power%5B%5C%2840%29Surd%5B1.80%2C31536000%5D%5C%2841%29%2C6%5D-1%5C%2841%29*1e10
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// => 1118.32 => truncated to 1118 tokens.
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expCommunityPoolBalance: sdk.NewInt(1118),
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expFeeCollectorBalance: sdk.ZeroInt(),
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},
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{
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name: "mints no tokens if all inflation is zero",
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blockTime: 6,
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communityPoolInflation: sdk.ZeroDec(),
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stakingRewardsApy: sdk.ZeroDec(),
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bondedRatio: sdk.NewDecWithPrec(40, 2),
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expCommunityPoolBalance: sdk.ZeroInt(),
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expFeeCollectorBalance: sdk.ZeroInt(),
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},
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{
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name: "mints no tokens if zero seconds passed",
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blockTime: 0,
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communityPoolInflation: sdk.NewDecWithPrec(50, 2),
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stakingRewardsApy: sdk.NewDecWithPrec(20, 2),
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bondedRatio: sdk.NewDecWithPrec(35, 2),
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expCommunityPoolBalance: sdk.ZeroInt(),
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expFeeCollectorBalance: sdk.ZeroInt(),
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},
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{
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name: "mints community pool inflation and staking rewards",
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blockTime: 6,
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communityPoolInflation: sdk.NewDecWithPrec(50, 2),
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stakingRewardsApy: sdk.NewDecWithPrec(20, 2),
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bondedRatio: sdk.NewDecWithPrec(35, 2),
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// 50% APY for 6 seconds
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// total supply = 1e10
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// https://www.wolframalpha.com/input?i2d=true&i=%5C%2840%29Power%5B%5C%2840%29Surd%5B1.5%2C31536000%5D%5C%2841%29%2C6%5D-1%5C%2841%29*1e10
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// => 771.43 => truncated to 771 tokens.
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expCommunityPoolBalance: sdk.NewInt(771),
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// 20% APY for 6 seconds
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// total bonded = 1e10 * 35%
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// https://www.wolframalpha.com/input?i2d=true&i=%5C%2840%29Power%5B%5C%2840%29Surd%5B1.20%2C31536000%5D%5C%2841%29%2C6%5D-1%5C%2841%29*1e10*.35
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// => 121.41 => truncated to 121 tokens.
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expFeeCollectorBalance: sdk.NewInt(121),
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},
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{
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name: "handles long block time",
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blockTime: 60, // a minute
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communityPoolInflation: sdk.NewDecWithPrec(50, 2),
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stakingRewardsApy: sdk.NewDecWithPrec(20, 2),
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bondedRatio: sdk.NewDecWithPrec(35, 2),
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// https://www.wolframalpha.com/input?i2d=true&i=%5C%2840%29Power%5B%5C%2840%29Surd%5B1.5%2C31536000%5D%5C%2841%29%2C60%5D-1%5C%2841%29*1e10
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expCommunityPoolBalance: sdk.NewInt(7714),
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// https://www.wolframalpha.com/input?i2d=true&i=%5C%2840%29Power%5B%5C%2840%29Surd%5B1.20%2C31536000%5D%5C%2841%29%2C60%5D-1%5C%2841%29*1e10*.35
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expFeeCollectorBalance: sdk.NewInt(1214),
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},
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{
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name: "handles extra long block time",
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blockTime: 3 * 3600, // three hours
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communityPoolInflation: sdk.NewDecWithPrec(50, 2),
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stakingRewardsApy: sdk.NewDecWithPrec(20, 2),
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bondedRatio: sdk.NewDecWithPrec(35, 2),
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// https://www.wolframalpha.com/input?i2d=true&i=%5C%2840%29Power%5B%5C%2840%29Surd%5B1.5%2C31536000%5D%5C%2841%29%2C3*3600%5D-1%5C%2841%29*1e10
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expCommunityPoolBalance: sdk.NewInt(1388675),
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// https://www.wolframalpha.com/input?i2d=true&i=%5C%2840%29Power%5B%5C%2840%29Surd%5B1.20%2C31536000%5D%5C%2841%29%2C3*3600%5D-1%5C%2841%29*1e10*.35
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expFeeCollectorBalance: sdk.NewInt(218542),
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},
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}
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for _, tc := range testCases {
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suite.Run(tc.name, func() {
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suite.SetupTest()
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// set store and params
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suite.Keeper.SetPreviousBlockTime(suite.Ctx, suite.Ctx.BlockTime())
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suite.Keeper.SetParams(
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suite.Ctx,
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types.NewParams(tc.communityPoolInflation, tc.stakingRewardsApy),
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)
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// set bonded token ratio
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suite.SetBondedTokenRatio(tc.bondedRatio)
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staking.EndBlocker(suite.Ctx, suite.StakingKeeper)
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// run begin blocker
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kavamint.BeginBlocker(suite.Ctx, suite.Keeper)
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// expect everything empty to start
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suite.CheckFeeCollectorBalance(suite.Ctx, sdk.ZeroInt())
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suite.CheckKavamintBalance(suite.Ctx, sdk.ZeroInt())
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suite.CheckCommunityPoolBalance(suite.Ctx, sdk.ZeroInt())
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// expect initial block time set
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startBlockTime := suite.Keeper.GetPreviousBlockTime(suite.Ctx)
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suite.Require().False(startBlockTime.IsZero())
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suite.Require().Equal(suite.Ctx.BlockTime(), startBlockTime)
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// run begin blocker again to mint inflation
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ctx2 := suite.Ctx.WithBlockTime(suite.Ctx.BlockTime().Add(time.Second * time.Duration(tc.blockTime)))
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kavamint.BeginBlocker(ctx2, suite.Keeper)
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// check expected balances
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suite.CheckCommunityPoolBalance(ctx2, tc.expCommunityPoolBalance)
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suite.CheckFeeCollectorBalance(ctx2, tc.expFeeCollectorBalance)
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// x/kavamint balance should always be 0 because 100% should be transferred out every block
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suite.CheckKavamintBalance(ctx2, sdk.ZeroInt())
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// expect time to be updated
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endBlockTime := suite.Keeper.GetPreviousBlockTime(ctx2)
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suite.Require().False(endBlockTime.IsZero())
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suite.Require().Equal(ctx2.BlockTime(), endBlockTime)
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})
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}
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}
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func (suite *abciTestSuite) Test_BeginBlocker_DefaultsToBlockTime() {
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suite.SetupTest()
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// unset previous block time
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suite.Keeper.SetPreviousBlockTime(suite.Ctx, time.Time{})
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// run begin blocker
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kavamint.BeginBlocker(suite.Ctx, suite.Keeper)
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// ensure block time gets set
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blockTime := suite.Keeper.GetPreviousBlockTime(suite.Ctx)
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suite.False(blockTime.IsZero())
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suite.Equal(suite.Ctx.BlockTime(), blockTime)
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}
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