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package state_test
import (
"fmt"
"os"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
cfg "github.com/tendermint/tendermint/config"
sm "github.com/tendermint/tendermint/state"
"github.com/tendermint/tendermint/types"
dbm "github.com/tendermint/tm-db"
)
func TestStoreLoadValidators(t *testing.T) {
stateDB := dbm.NewMemDB()
val, _ := types.RandValidator(true, 10)
vals := types.NewValidatorSet([]*types.Validator{val})
// 1) LoadValidators loads validators using a height where they were last changed
sm.SaveValidatorsInfo(stateDB, 1, 1, vals)
sm.SaveValidatorsInfo(stateDB, 2, 1, vals)
loadedVals, err := sm.LoadValidators(stateDB, 2)
require.NoError(t, err)
assert.NotZero(t, loadedVals.Size())
// 2) LoadValidators loads validators using a checkpoint height
sm.SaveValidatorsInfo(stateDB, sm.ValSetCheckpointInterval, 1, vals)
loadedVals, err = sm.LoadValidators(stateDB, sm.ValSetCheckpointInterval)
require.NoError(t, err)
assert.NotZero(t, loadedVals.Size())
}
func BenchmarkLoadValidators(b *testing.B) {
const valSetSize = 100
config := cfg.ResetTestRoot("state_")
defer os.RemoveAll(config.RootDir)
dbType := dbm.BackendType(config.DBBackend)
stateDB := dbm.NewDB("state", dbType, config.DBDir())
state, err := sm.LoadStateFromDBOrGenesisFile(stateDB, config.GenesisFile())
if err != nil {
b.Fatal(err)
}
state.Validators = genValSet(valSetSize)
state.NextValidators = state.Validators.CopyIncrementProposerPriority(1)
sm.SaveState(stateDB, state)
for i := 10; i < 10000000000; i *= 10 { // 10, 100, 1000, ...
i := i
sm.SaveValidatorsInfo(stateDB, int64(i), state.LastHeightValidatorsChanged, state.NextValidators)
b.Run(fmt.Sprintf("height=%d", i), func(b *testing.B) {
for n := 0; n < b.N; n++ {
_, err := sm.LoadValidators(stateDB, int64(i))
if err != nil {
b.Fatal(err)
}
}
})
}
}