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// Copyright 2018 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 test
import (
"testing"
"time"
"github.com/dexon-foundation/dexon-consensus/common"
"github.com/dexon-foundation/dexon-consensus/core/crypto"
"github.com/dexon-foundation/dexon-consensus/core/crypto/dkg"
"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"
)
type GovernanceTestSuite struct {
suite.Suite
}
func (s *GovernanceTestSuite) TestEqual() {
var req = s.Require()
// Setup a base governance.
_, genesisNodes, err := NewKeys(20)
req.NoError(err)
g1, err := NewGovernance(NewState(
1, genesisNodes, 100*time.Millisecond, &common.NullLogger{}, true), 2)
req.NoError(err)
// Create a governance with different lambda.
g2, err := NewGovernance(NewState(
1, genesisNodes, 50*time.Millisecond, &common.NullLogger{}, true), 2)
req.NoError(err)
req.False(g1.Equal(g2, true))
// Create configs for 3 rounds for g1.
g1.CatchUpWithRound(3)
// Make a clone.
g3 := g1.Clone()
req.True(g1.Equal(g3, true))
// Create a new round for g1.
g1.CatchUpWithRound(4)
req.False(g1.Equal(g3, true))
// Make another clone.
g4 := g1.Clone()
req.True(g1.Equal(g4, true))
// Add a node to g4.
_, newNodes, err := NewKeys(1)
req.NoError(err)
g4.State().RequestChange(StateAddNode, newNodes[0])
g1.CatchUpWithRound(5)
g4.CatchUpWithRound(5)
req.False(g1.Equal(g4, true))
// Make a clone.
g5 := g1.Clone()
// Change its roundShift
g5.roundShift = 3
req.False(g1.Equal(g5, true))
// Prohibit some change.
g1.Prohibit(StateAddDKGFinal)
// Make a clone and should be equal.
g6 := g1.Clone()
req.True(g1.Equal(g6, true))
g6.Unprohibit(StateAddDKGFinal)
req.False(g1.Equal(g6, true))
}
func (s *GovernanceTestSuite) TestRegisterChange() {
var (
req = s.Require()
roundLength uint64 = 100
)
_, genesisNodes, err := NewKeys(20)
req.NoError(err)
g, err := NewGovernance(NewState(
1, genesisNodes, 100*time.Millisecond, &common.NullLogger{}, true), 2)
req.NoError(err)
req.NoError(g.State().RequestChange(StateChangeRoundLength,
uint64(roundLength)))
// Unable to register change for genesis round.
req.Error(g.RegisterConfigChange(0, StateChangeDKGSetSize, uint32(32)))
// Make some round prepared.
g.CatchUpWithRound(4)
req.Equal(g.Configuration(4).DKGSetSize, uint32(20))
// Unable to register change for prepared round.
req.Error(g.RegisterConfigChange(4, StateChangeDKGSetSize, uint32(32)))
// It's ok to make some change when condition is met.
req.NoError(g.RegisterConfigChange(5, StateChangeDKGSetSize, uint32(32)))
req.NoError(g.RegisterConfigChange(6, StateChangeDKGSetSize, uint32(32)))
req.NoError(g.RegisterConfigChange(7, StateChangeDKGSetSize, uint32(40)))
// In local mode, state for round 6 would be ready after notified with
// round 2.
g.NotifyRound(2, roundLength*2)
g.NotifyRound(3, roundLength*3)
// In local mode, state for round 7 would be ready after notified with
// round 6.
g.NotifyRound(4, roundLength*4)
// Notify governance to take a snapshot for round 7's configuration.
g.NotifyRound(5, roundLength*5)
req.Equal(g.Configuration(6).DKGSetSize, uint32(32))
req.Equal(g.Configuration(7).DKGSetSize, uint32(40))
}
func (s *GovernanceTestSuite) TestProhibit() {
round := uint64(1)
prvKeys, genesisNodes, err := NewKeys(4)
s.Require().NoError(err)
gov, err := NewGovernance(NewState(
1, genesisNodes, 100*time.Millisecond, &common.NullLogger{}, true), 2)
s.Require().NoError(err)
// Test MPK.
proposeMPK := func(k crypto.PrivateKey) {
signer := utils.NewSigner(k)
_, pubShare := dkg.NewPrivateKeyShares(utils.GetDKGThreshold(
gov.Configuration(round)))
mpk := &typesDKG.MasterPublicKey{
Round: round,
DKGID: typesDKG.NewID(types.NewNodeID(k.PublicKey())),
PublicKeyShares: *pubShare,
}
s.Require().NoError(signer.SignDKGMasterPublicKey(mpk))
gov.AddDKGMasterPublicKey(mpk)
}
proposeMPK(prvKeys[0])
s.Require().Len(gov.DKGMasterPublicKeys(round), 1)
gov.Prohibit(StateAddDKGMasterPublicKey)
proposeMPK(prvKeys[1])
s.Require().Len(gov.DKGMasterPublicKeys(round), 1)
gov.Unprohibit(StateAddDKGMasterPublicKey)
proposeMPK(prvKeys[1])
s.Require().Len(gov.DKGMasterPublicKeys(round), 2)
// Test Complaint.
proposeComplaint := func(k crypto.PrivateKey) {
signer := utils.NewSigner(k)
comp := &typesDKG.Complaint{
ProposerID: types.NewNodeID(k.PublicKey()),
Round: round,
}
s.Require().NoError(signer.SignDKGComplaint(comp))
gov.AddDKGComplaint(comp)
}
proposeComplaint(prvKeys[0])
s.Require().Len(gov.DKGComplaints(round), 1)
gov.Prohibit(StateAddDKGComplaint)
proposeComplaint(prvKeys[1])
s.Require().Len(gov.DKGComplaints(round), 1)
gov.Unprohibit(StateAddDKGComplaint)
proposeComplaint(prvKeys[1])
s.Require().Len(gov.DKGComplaints(round), 2)
// Test DKG Final.
proposeFinal := func(k crypto.PrivateKey) {
signer := utils.NewSigner(k)
final := &typesDKG.Finalize{
Round: round,
ProposerID: types.NewNodeID(k.PublicKey()),
}
s.Require().NoError(signer.SignDKGFinalize(final))
gov.AddDKGFinalize(final)
}
gov.Prohibit(StateAddDKGFinal)
for _, k := range prvKeys {
proposeFinal(k)
}
s.Require().False(gov.IsDKGFinal(round))
gov.Unprohibit(StateAddDKGFinal)
for _, k := range prvKeys {
proposeFinal(k)
}
s.Require().True(gov.IsDKGFinal(round))
}
func TestGovernance(t *testing.T) {
suite.Run(t, new(GovernanceTestSuite))
}
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