LaconicNetwork/cosmos-sdk
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chore: reduce default inflation (#20606)

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Marko 2024-06-11 11:33:15 +02:00 committed by GitHub
parent 4fa658e687
commit 76a28ad4d0
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5 changed files with 20 additions and 21 deletions
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8
tests/e2e/bank/grpc.go
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@ -35,7 +35,7 @@ func (s *E2ETestSuite) TestTotalSupplyGRPCHandler() {
&types.QueryTotalSupplyResponse{
Supply: sdk.NewCoins(
sdk.NewCoin(fmt.Sprintf("%stoken", val.GetMoniker()), s.cfg.AccountTokens),
sdk.NewCoin(s.cfg.BondDenom, s.cfg.StakingTokens.Add(math.NewInt(10))),
sdk.NewCoin(s.cfg.BondDenom, s.cfg.StakingTokens.Add(math.NewInt(3))),
),
Pagination: &query.PageResponse{
Total: 2,
@ -50,7 +50,7 @@ func (s *E2ETestSuite) TestTotalSupplyGRPCHandler() {
},
&types.QuerySupplyOfResponse{},
&types.QuerySupplyOfResponse{
Amount: sdk.NewCoin(s.cfg.BondDenom, s.cfg.StakingTokens.Add(math.NewInt(10))),
Amount: sdk.NewCoin(s.cfg.BondDenom, s.cfg.StakingTokens.Add(math.NewInt(3))),
},
},
{
@ -61,7 +61,7 @@ func (s *E2ETestSuite) TestTotalSupplyGRPCHandler() {
},
&types.QuerySupplyOfResponse{},
&types.QuerySupplyOfResponse{
Amount: sdk.NewCoin(s.cfg.BondDenom, s.cfg.StakingTokens.Add(math.NewInt(20))),
Amount: sdk.NewCoin(s.cfg.BondDenom, s.cfg.StakingTokens.Add(math.NewInt(6))),
},
},
{
@ -72,7 +72,7 @@ func (s *E2ETestSuite) TestTotalSupplyGRPCHandler() {
},
&types.QuerySupplyOfResponse{},
&types.QuerySupplyOfResponse{
Amount: sdk.NewCoin(s.cfg.BondDenom, s.cfg.StakingTokens.Add(math.NewInt(10))),
Amount: sdk.NewCoin(s.cfg.BondDenom, s.cfg.StakingTokens.Add(math.NewInt(3))),
},
},
{

6
tests/e2e/distribution/grpc_query_suite.go
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@ -116,7 +116,7 @@ func (s *GRPCQueryTestSuite) TestQueryOutstandingRewardsGRPC() {
val := s.network.GetValidators()[0]
baseURL := val.GetAPIAddress()
rewards, err := sdk.ParseDecCoins("19.6stake")
rewards, err := sdk.ParseDecCoins("5.88stake")
s.Require().NoError(err)
testCases := []struct {
@ -170,7 +170,7 @@ func (s *GRPCQueryTestSuite) TestQueryValidatorCommissionGRPC() {
val := s.network.GetValidators()[0]
baseURL := val.GetAPIAddress()
commission, err := sdk.ParseDecCoins("9.8stake")
commission, err := sdk.ParseDecCoins("2.94stake")
s.Require().NoError(err)
testCases := []struct {
@ -283,7 +283,7 @@ func (s *GRPCQueryTestSuite) TestQueryDelegatorRewardsGRPC() {
val := s.network.GetValidators()[0]
baseURL := val.GetAPIAddress()
rewards, err := sdk.ParseDecCoins("9.8stake")
rewards, err := sdk.ParseDecCoins("2.94stake")
s.Require().NoError(err)
testCases := []struct {

3
x/mint/README.md
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@ -95,8 +95,7 @@ type InflationCalculationFn func(ctx sdk.Context, minter Minter, params Params,
The target annual inflation rate is recalculated each block.
The inflation is also subject to a rate change (positive or negative)
depending on the distance from the desired ratio (67%). The maximum rate change
possible is defined to be 13% per year, however, the annual inflation is capped
as between 7% and 20%.
possible is defined to be 5% per year, however, the annual inflation is capped between 0% and 5%.
```go
NextInflationRate(params Params, bondedRatio math.LegacyDec) (inflation math.LegacyDec) {

20
x/mint/types/minter_test.go
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@ -23,31 +23,31 @@ func TestNextInflation(t *testing.T) {
bondedRatio, setInflation, expChange math.LegacyDec
}{
// with 0% bonded atom supply the inflation should increase by InflationRateChange
{math.LegacyZeroDec(), math.LegacyNewDecWithPrec(7, 2), params.InflationRateChange.Quo(blocksPerYr)},
{math.LegacyZeroDec(), math.LegacyNewDecWithPrec(0, 2), params.InflationRateChange.Quo(blocksPerYr)},
// 100% bonded, starting at 20% inflation and being reduced
// (1 - (1/0.67))*(0.13/8667)
{
math.LegacyOneDec(), math.LegacyNewDecWithPrec(20, 2),
math.LegacyOneDec(), math.LegacyNewDecWithPrec(5, 2),
math.LegacyOneDec().Sub(math.LegacyOneDec().Quo(params.GoalBonded)).Mul(params.InflationRateChange).Quo(blocksPerYr),
},
// 50% bonded, starting at 10% inflation and being increased
{
math.LegacyNewDecWithPrec(5, 1), math.LegacyNewDecWithPrec(10, 2),
math.LegacyNewDecWithPrec(5, 1), math.LegacyNewDecWithPrec(2, 2),
math.LegacyOneDec().Sub(math.LegacyNewDecWithPrec(5, 1).Quo(params.GoalBonded)).Mul(params.InflationRateChange).Quo(blocksPerYr),
},
// test 7% minimum stop (testing with 100% bonded)
{math.LegacyOneDec(), math.LegacyNewDecWithPrec(7, 2), math.LegacyZeroDec()},
{math.LegacyOneDec(), math.LegacyNewDecWithPrec(700000001, 10), math.LegacyNewDecWithPrec(-1, 10)},
// test 0% minimum stop (testing with 100% bonded)
{math.LegacyOneDec(), math.LegacyNewDecWithPrec(0, 2), math.LegacyZeroDec()},
{math.LegacyOneDec(), math.LegacyNewDecWithPrec(1, 10), math.LegacyNewDecWithPrec(-1, 10)},
// test 20% maximum stop (testing with 0% bonded)
{math.LegacyZeroDec(), math.LegacyNewDecWithPrec(20, 2), math.LegacyZeroDec()},
{math.LegacyZeroDec(), math.LegacyNewDecWithPrec(1999999999, 10), math.LegacyNewDecWithPrec(1, 10)},
// test 5% maximum stop (testing with 0% bonded)
{math.LegacyZeroDec(), math.LegacyNewDecWithPrec(5, 2), math.LegacyZeroDec()},
{math.LegacyZeroDec(), math.LegacyNewDecWithPrec(499999999, 10), math.LegacyNewDecWithPrec(1, 10)},
// perfect balance shouldn't change inflation
{math.LegacyNewDecWithPrec(67, 2), math.LegacyNewDecWithPrec(15, 2), math.LegacyZeroDec()},
{math.LegacyNewDecWithPrec(67, 2), math.LegacyNewDecWithPrec(5, 2), math.LegacyZeroDec()},
}
for i, tc := range tests {
minter.Inflation = tc.setInflation

4
x/mint/types/params.go
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@ -28,8 +28,8 @@ func DefaultParams() Params {
return Params{
MintDenom: sdk.DefaultBondDenom,
InflationRateChange: math.LegacyNewDecWithPrec(13, 2),
InflationMax: math.LegacyNewDecWithPrec(20, 2),
InflationMin: math.LegacyNewDecWithPrec(7, 2),
InflationMax: math.LegacyNewDecWithPrec(5, 2),
InflationMin: math.LegacyNewDecWithPrec(0, 2),
GoalBonded: math.LegacyNewDecWithPrec(67, 2),
BlocksPerYear: uint64(60 * 60 * 8766 / 5), // assuming 5 second block times
MaxSupply: math.ZeroInt(), // assuming zero is infinite