// Copyright 2019 The dexon-consensus Authors
// This file is part of the dexon-consensus library.
//
// The dexon-consensus library is free software: you can redistribute it
// and/or modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
//
// The dexon-consensus library is distributed in the hope that it will be
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
// General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the dexon-consensus library. If not, see
// <http://www.gnu.org/licenses/>.
package integration
import (
"context"
"fmt"
"testing"
"time"
"github.com/dexon-foundation/dexon-consensus/common"
"github.com/dexon-foundation/dexon-consensus/core"
"github.com/dexon-foundation/dexon-consensus/core/crypto"
"github.com/dexon-foundation/dexon-consensus/core/crypto/dkg"
"github.com/dexon-foundation/dexon-consensus/core/test"
"github.com/dexon-foundation/dexon-consensus/core/types"
typesDKG "github.com/dexon-foundation/dexon-consensus/core/types/dkg"
"github.com/dexon-foundation/dexon-consensus/core/utils"
"github.com/stretchr/testify/suite"
)
func getCRS(round, reset uint64) []byte {
return []byte(fmt.Sprintf("r#%d,reset#%d", round, reset))
}
type evtParamToCheck struct {
round uint64
reset uint64
height uint64
crs common.Hash
}
type RoundEventTestSuite struct {
suite.Suite
pubKeys []crypto.PublicKey
signers []*utils.Signer
logger common.Logger
}
func (s *RoundEventTestSuite) SetupSuite() {
prvKeys, pubKeys, err := test.NewKeys(4)
s.Require().NoError(err)
s.pubKeys = pubKeys
for _, k := range prvKeys {
s.signers = append(s.signers, utils.NewSigner(k))
}
s.logger = &common.NullLogger{}
}
func (s *RoundEventTestSuite) prepareGov() *test.Governance {
gov, err := test.NewGovernance(
test.NewState(1, s.pubKeys, 100*time.Millisecond, s.logger, true),
core.ConfigRoundShift)
s.Require().NoError(err)
return gov
}
func (s *RoundEventTestSuite) proposeMPK(
gov *test.Governance,
round, reset uint64,
count int) {
for idx, pubKey := range s.pubKeys[:count] {
_, pubShare := dkg.NewPrivateKeyShares(utils.GetDKGThreshold(
gov.Configuration(round)))
mpk := &typesDKG.MasterPublicKey{
Round: round,
Reset: reset,
DKGID: typesDKG.NewID(types.NewNodeID(pubKey)),
PublicKeyShares: *pubShare,
}
s.Require().NoError(s.signers[idx].SignDKGMasterPublicKey(mpk))
gov.AddDKGMasterPublicKey(round, mpk)
}
}
func (s *RoundEventTestSuite) proposeFinalize(
gov *test.Governance,
round, reset uint64,
count int) {
for idx, pubKey := range s.pubKeys[:count] {
final := &typesDKG.Finalize{
ProposerID: types.NewNodeID(pubKey),
Round: round,
Reset: reset,
}
s.Require().NoError(s.signers[idx].SignDKGFinalize(final))
gov.AddDKGFinalize(round, final)
}
}
func (s *RoundEventTestSuite) TestFromRound0() {
// Prepare test.Governance.
gov := s.prepareGov()
s.Require().NoError(gov.State().RequestChange(test.StateChangeRoundLength,
uint64(100)))
gov.CatchUpWithRound(0)
s.Require().NoError(gov.State().RequestChange(test.StateChangeRoundLength,
uint64(200)))
gov.CatchUpWithRound(1)
// Prepare utils.RoundEvent, starts from genesis.
rEvt, err := utils.NewRoundEvent(
context.Background(), gov, s.logger, 0, 0, 0, core.ConfigRoundShift)
s.Require().NoError(err)
// Register a handler to collects triggered events.
var evts []evtParamToCheck
rEvt.Register(func(params []utils.RoundEventParam) {
for _, p := range params {
evts = append(evts, evtParamToCheck{
round: p.Round,
reset: p.Reset,
height: p.BeginHeight,
crs: p.CRS,
})
// Tricky part to make sure passed config is correct.
s.Require().Equal((p.Round+1)*100, p.Config.RoundLength)
}
})
// Reset round#1 twice, then make it ready.
gov.ResetDKG([]byte("DKG round 1 reset 1"))
gov.ResetDKG([]byte("DKG round 1 reset 2"))
s.proposeMPK(gov, 1, 2, 3)
s.proposeFinalize(gov, 1, 2, 3)
rEvt.ValidateNextRound(80)
// Check collected events.
s.Require().Len(evts, 3)
s.Require().Equal(evts[0], evtParamToCheck{0, 1, 100, gov.CRS(0)})
s.Require().Equal(evts[1], evtParamToCheck{0, 2, 200, gov.CRS(0)})
s.Require().Equal(evts[2], evtParamToCheck{1, 0, 300, gov.CRS(1)})
}
func (s *RoundEventTestSuite) TestFromRoundN() {
// Prepare test.Governance.
gov := s.prepareGov()
s.Require().NoError(gov.State().RequestChange(test.StateChangeRoundLength,
uint64(100)))
gov.CatchUpWithRound(22)
for r := uint64(2); r <= uint64(20); r++ {
gov.ProposeCRS(r, getCRS(r, 0))
}
// Reset round#20 twice, then make it done DKG preparation.
gov.ResetDKG(getCRS(20, 1))
gov.ResetDKG(getCRS(20, 2))
s.proposeMPK(gov, 20, 2, 3)
s.proposeFinalize(gov, 20, 2, 3)
s.Require().Equal(gov.DKGResetCount(20), uint64(2))
// Propose CRS for round#21, and it works without reset.
gov.ProposeCRS(21, getCRS(21, 0))
s.proposeMPK(gov, 21, 0, 3)
s.proposeFinalize(gov, 21, 0, 3)
// Propose CRS for round#22, and it works without reset.
gov.ProposeCRS(22, getCRS(22, 0))
s.proposeMPK(gov, 22, 0, 3)
s.proposeFinalize(gov, 22, 0, 3)
// Prepare utils.RoundEvent, starts from round#19, reset(for round#20)#1.
rEvt, err := utils.NewRoundEvent(context.Background(), gov, s.logger, 19,
1900, 2019, core.ConfigRoundShift)
s.Require().NoError(err)
// Register a handler to collects triggered events.
var evts []evtParamToCheck
rEvt.Register(func(params []utils.RoundEventParam) {
for _, p := range params {
evts = append(evts, evtParamToCheck{
round: p.Round,
reset: p.Reset,
height: p.BeginHeight,
crs: p.CRS,
})
}
})
// Check for round#19, reset(for round#20)#2 at height=2080.
rEvt.ValidateNextRound(2080)
// Check collected events.
s.Require().Len(evts, 2)
s.Require().Equal(evts[0], evtParamToCheck{19, 2, 2100, gov.CRS(19)})
s.Require().Equal(evts[1], evtParamToCheck{20, 0, 2200, gov.CRS(20)})
// Round might exceed round-shift limitation would not be triggered.
rEvt.ValidateNextRound(2280)
s.Require().Len(evts, 3)
s.Require().Equal(evts[2], evtParamToCheck{21, 0, 2300, gov.CRS(21)})
rEvt.ValidateNextRound(2380)
s.Require().Equal(evts[3], evtParamToCheck{22, 0, 2400, gov.CRS(22)})
}
func (s *RoundEventTestSuite) TestLastPeriod() {
gov := s.prepareGov()
s.Require().NoError(gov.State().RequestChange(test.StateChangeRoundLength,
uint64(100)))
gov.CatchUpWithRound(0)
s.Require().NoError(gov.State().RequestChange(test.StateChangeRoundLength,
uint64(200)))
gov.CatchUpWithRound(1)
// Prepare utils.RoundEvent, starts from genesis.
rEvt, err := utils.NewRoundEvent(
context.Background(), gov, s.logger, 0, 0, 0, core.ConfigRoundShift)
s.Require().NoError(err)
begin, length := rEvt.LastPeriod()
s.Require().Equal(begin, uint64(0))
s.Require().Equal(length, uint64(100))
// Reset round#1 twice, then make it ready.
gov.ResetDKG([]byte("DKG round 1 reset 1"))
gov.ResetDKG([]byte("DKG round 1 reset 2"))
rEvt.ValidateNextRound(80)
begin, length = rEvt.LastPeriod()
s.Require().Equal(begin, uint64(200))
s.Require().Equal(length, uint64(100))
s.proposeMPK(gov, 1, 2, 3)
s.proposeFinalize(gov, 1, 2, 3)
rEvt.ValidateNextRound(80)
begin, length = rEvt.LastPeriod()
s.Require().Equal(begin, uint64(300))
s.Require().Equal(length, uint64(200))
}
func (s *RoundEventTestSuite) TestTriggerInitEvent() {
gov := s.prepareGov()
s.Require().NoError(gov.State().RequestChange(test.StateChangeRoundLength,
uint64(100)))
gov.CatchUpWithRound(0)
s.Require().NoError(gov.State().RequestChange(test.StateChangeRoundLength,
uint64(200)))
gov.CatchUpWithRound(1)
// Prepare utils.RoundEvent, starts from genesis.
rEvt, err := utils.NewRoundEvent(
context.Background(), gov, s.logger, 0, 0, 0, core.ConfigRoundShift)
s.Require().NoError(err)
// Register a handler to collects triggered events.
var evts []evtParamToCheck
rEvt.Register(func(params []utils.RoundEventParam) {
for _, p := range params {
evts = append(evts, evtParamToCheck{
round: p.Round,
reset: p.Reset,
height: p.BeginHeight,
crs: p.CRS,
})
}
})
rEvt.TriggerInitEvent()
s.Require().Len(evts, 1)
s.Require().Equal(evts[0], evtParamToCheck{0, 0, 0, gov.CRS(0)})
}
func TestRoundEvent(t *testing.T) {
suite.Run(t, new(RoundEventTestSuite))
}
