0g-chain/x/kavadist/keeper/mint_test.go
2020-04-30 10:23:41 -04:00

148 lines
5.2 KiB
Go

package keeper_test
import (
"testing"
"time"
"github.com/stretchr/testify/suite"
sdk "github.com/cosmos/cosmos-sdk/types"
abci "github.com/tendermint/tendermint/abci/types"
tmtime "github.com/tendermint/tendermint/types/time"
"github.com/kava-labs/kava/app"
"github.com/kava-labs/kava/x/kavadist/keeper"
"github.com/kava-labs/kava/x/kavadist/types"
)
type MintTestSuite struct {
suite.Suite
keeper keeper.Keeper
supplyKeeper types.SupplyKeeper
app app.TestApp
ctx sdk.Context
}
var (
p = types.Periods{
types.Period{
Start: time.Date(2020, time.March, 1, 1, 0, 0, 0, time.UTC),
End: time.Date(2021, time.March, 1, 1, 0, 0, 0, time.UTC),
Inflation: sdk.MustNewDecFromStr("1.000000003022265980"),
},
}
)
func (suite *MintTestSuite) SetupTest() {
config := sdk.GetConfig()
app.SetBech32AddressPrefixes(config)
tApp := app.NewTestApp()
_, addrs := app.GeneratePrivKeyAddressPairs(1)
coins := []sdk.Coins{sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1000000000000)))}
authGS := app.NewAuthGenState(
addrs, coins)
ctx := tApp.NewContext(true, abci.Header{Height: 1, Time: tmtime.Now()})
params := types.NewParams(true, p)
gs := app.GenesisState{types.ModuleName: types.ModuleCdc.MustMarshalJSON(types.NewGenesisState(params, types.DefaultPreviousBlockTime))}
tApp.InitializeFromGenesisStates(
authGS,
gs,
)
keeper := tApp.GetKavadistKeeper()
sk := tApp.GetSupplyKeeper()
suite.app = tApp
suite.ctx = ctx
suite.keeper = keeper
suite.supplyKeeper = sk
}
func (suite *MintTestSuite) TestMintExpiredPeriod() {
initialSupply := suite.supplyKeeper.GetSupply(suite.ctx).GetTotal().AmountOf(types.GovDenom)
suite.NotPanics(func() { suite.keeper.SetPreviousBlockTime(suite.ctx, time.Date(2022, 1, 1, 0, 0, 0, 0, time.UTC)) })
ctx := suite.ctx.WithBlockTime(time.Date(2022, 1, 1, 0, 7, 0, 0, time.UTC))
err := suite.keeper.MintPeriodInflation(ctx)
suite.NoError(err)
finalSupply := suite.supplyKeeper.GetSupply(ctx).GetTotal().AmountOf(types.GovDenom)
suite.Equal(initialSupply, finalSupply)
}
func (suite *MintTestSuite) TestMintPeriodNotStarted() {
initialSupply := suite.supplyKeeper.GetSupply(suite.ctx).GetTotal().AmountOf(types.GovDenom)
suite.NotPanics(func() { suite.keeper.SetPreviousBlockTime(suite.ctx, time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)) })
ctx := suite.ctx.WithBlockTime(time.Date(2019, 1, 1, 0, 7, 0, 0, time.UTC))
err := suite.keeper.MintPeriodInflation(ctx)
suite.NoError(err)
finalSupply := suite.supplyKeeper.GetSupply(ctx).GetTotal().AmountOf(types.GovDenom)
suite.Equal(initialSupply, finalSupply)
}
func (suite *MintTestSuite) TestMintOngoingPeriod() {
initialSupply := suite.supplyKeeper.GetSupply(suite.ctx).GetTotal().AmountOf(types.GovDenom)
suite.NotPanics(func() {
suite.keeper.SetPreviousBlockTime(suite.ctx, time.Date(2020, time.March, 1, 1, 0, 1, 0, time.UTC))
})
ctx := suite.ctx.WithBlockTime(time.Date(2021, 2, 28, 23, 59, 59, 0, time.UTC))
err := suite.keeper.MintPeriodInflation(ctx)
suite.NoError(err)
finalSupply := suite.supplyKeeper.GetSupply(ctx).GetTotal().AmountOf(types.GovDenom)
suite.True(finalSupply.GT(initialSupply))
mAcc := suite.supplyKeeper.GetModuleAccount(ctx, types.ModuleName)
mAccSupply := mAcc.GetCoins().AmountOf(types.GovDenom)
suite.True(mAccSupply.Equal(finalSupply.Sub(initialSupply)))
// expect that inflation is ~10%
expectedSupply := sdk.NewDecFromInt(initialSupply).Mul(sdk.MustNewDecFromStr("1.1"))
supplyError := sdk.OneDec().Sub((sdk.NewDecFromInt(finalSupply).Quo(expectedSupply))).Abs()
suite.True(supplyError.LTE(sdk.MustNewDecFromStr("0.001")))
}
func (suite *MintTestSuite) TestMintPeriodTransition() {
initialSupply := suite.supplyKeeper.GetSupply(suite.ctx).GetTotal().AmountOf(types.GovDenom)
params := suite.keeper.GetParams(suite.ctx)
periods := types.Periods{
p[0],
types.Period{
Start: time.Date(2021, time.March, 1, 1, 0, 0, 0, time.UTC),
End: time.Date(2022, time.March, 1, 1, 0, 0, 0, time.UTC),
Inflation: sdk.MustNewDecFromStr("1.000000003022265980"),
},
}
params.Periods = periods
suite.NotPanics(func() {
suite.keeper.SetParams(suite.ctx, params)
})
suite.NotPanics(func() {
suite.keeper.SetPreviousBlockTime(suite.ctx, time.Date(2020, time.March, 1, 1, 0, 1, 0, time.UTC))
})
ctx := suite.ctx.WithBlockTime(time.Date(2021, 3, 10, 0, 0, 0, 0, time.UTC))
err := suite.keeper.MintPeriodInflation(ctx)
suite.NoError(err)
finalSupply := suite.supplyKeeper.GetSupply(ctx).GetTotal().AmountOf(types.GovDenom)
suite.True(finalSupply.GT(initialSupply))
}
func (suite *MintTestSuite) TestMintNotActive() {
initialSupply := suite.supplyKeeper.GetSupply(suite.ctx).GetTotal().AmountOf(types.GovDenom)
params := suite.keeper.GetParams(suite.ctx)
params.Active = false
suite.NotPanics(func() {
suite.keeper.SetParams(suite.ctx, params)
})
suite.NotPanics(func() {
suite.keeper.SetPreviousBlockTime(suite.ctx, time.Date(2020, time.March, 1, 1, 0, 1, 0, time.UTC))
})
ctx := suite.ctx.WithBlockTime(time.Date(2021, 2, 28, 23, 59, 59, 0, time.UTC))
err := suite.keeper.MintPeriodInflation(ctx)
suite.NoError(err)
finalSupply := suite.supplyKeeper.GetSupply(ctx).GetTotal().AmountOf(types.GovDenom)
suite.Equal(initialSupply, finalSupply)
}
func TestMintTestSuite(t *testing.T) {
suite.Run(t, new(MintTestSuite))
}