mukan-sdk/x/epochs/simulation/genesis.go

package simulation

import (
	"math/rand"
	"strconv"
	"time"

	"github.com/cosmos/cosmos-sdk/types/module"
	"github.com/cosmos/cosmos-sdk/x/epochs/types"
)

// GenDuration randomized GenDuration
func GenDuration(r *rand.Rand) time.Duration {
	return time.Hour * time.Duration(r.Intn(168)+1) // between 1 hour to 1 week
}

func RandomizedEpochs(r *rand.Rand) []types.EpochInfo {
	// Gen max 10 epoch
	n := r.Intn(11)
	var epochs []types.EpochInfo
	for i := range n {
		identifier := "identifier-" + strconv.Itoa(i)
		duration := GenDuration(r)
		epoch := types.NewGenesisEpochInfo(identifier, duration)
		epochs = append(epochs, epoch)
	}
	return epochs
}

// RandomizedGenState generates a random GenesisState for distribution
func RandomizedGenState(simState *module.SimulationState) {
	epochs := RandomizedEpochs(simState.Rand)
	epochsGenesis := types.GenesisState{
		Epochs: epochs,
	}

	simState.GenState[types.ModuleName] = simState.Cdc.MustMarshalJSON(&epochsGenesis)
}