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preroundtracker_test.go
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package hare
import (
"context"
"testing"
"github.com/stretchr/testify/require"
"github.com/spacemeshos/go-spacemesh/common/types"
"github.com/spacemeshos/go-spacemesh/log/logtest"
"github.com/spacemeshos/go-spacemesh/signing"
)
const (
ki = preRound
lowThresh10 = 10
lowDefaultSize = 100
)
func BuildPreRoundMsg(sig *signing.EdSigner, s *Set, roleProof types.VrfSignature) *Message {
builder := newMessageBuilder()
builder.SetType(pre).SetLayer(instanceID1).SetRoundCounter(preRound).SetCommittedRound(ki).SetValues(s).SetRoleProof(roleProof)
builder.SetEligibilityCount(1)
m := builder.Sign(sig).Build()
m.signedHash = types.BytesToHash(m.InnerMessage.HashBytes())
return m
}
func TestPreRoundTracker_OnPreRound(t *testing.T) {
s := NewEmptySet(lowDefaultSize)
s.Add(types.ProposalID{1})
s.Add(types.ProposalID{2})
signer, err := signing.NewEdSigner()
require.NoError(t, err)
et := NewEligibilityTracker(lowThresh10)
mch := make(chan *types.MalfeasanceGossip, lowThresh10)
tracker := newPreRoundTracker(logtest.New(t), mch, et, lowThresh10, lowThresh10)
m1 := BuildPreRoundMsg(signer, s, types.EmptyVrfSignature)
et.Track(m1.SmesherID, m1.Round, m1.Eligibility.Count, true)
tracker.OnPreRound(context.Background(), m1)
require.Equal(t, 1, len(tracker.preRound)) // one msg
require.Equal(t, 2, len(tracker.tracker.table)) // two Values
g := tracker.preRound[signer.NodeID()]
require.True(t, s.Equals(g.Set))
require.Equal(t, 1, tracker.tracker.CountStatus(types.ProposalID{1}).hCount)
nSet := NewSetFromValues(types.ProposalID{3}, types.ProposalID{4})
m2 := BuildPreRoundMsg(signer, nSet, types.EmptyVrfSignature)
m2.Eligibility.Count = 2
et.Track(m2.SmesherID, m2.Round, m2.Eligibility.Count, true)
tracker.OnPreRound(context.Background(), m2)
h := tracker.preRound[signer.NodeID()]
require.True(t, h.Equals(s.Union(nSet)))
require.Len(t, mch, 1)
expected := types.MalfeasanceGossip{
MalfeasanceProof: types.MalfeasanceProof{
Layer: m1.Layer,
Proof: types.Proof{
Type: types.HareEquivocation,
Data: &types.HareProof{
Messages: [2]types.HareProofMsg{
{
InnerMsg: types.HareMetadata{
Layer: m1.Layer,
Round: m1.Round,
MsgHash: types.BytesToHash(m1.HashBytes()),
},
SmesherID: m1.SmesherID,
Signature: m1.Signature,
},
{
InnerMsg: types.HareMetadata{
Layer: m2.Layer,
Round: m2.Round,
MsgHash: types.BytesToHash(m2.HashBytes()),
},
SmesherID: m2.SmesherID,
Signature: m2.Signature,
},
},
},
},
},
Eligibility: &types.HareEligibilityGossip{
Layer: m2.Layer,
Round: m2.Round,
NodeID: m2.SmesherID,
Eligibility: m2.Eligibility,
},
}
gossip := <-mch
verifyMalfeasanceProof(t, signer, gossip)
require.Equal(t, expected, *gossip)
interSet := NewSetFromValues(types.ProposalID{1}, types.ProposalID{2}, types.ProposalID{5})
m3 := BuildPreRoundMsg(signer, interSet, types.EmptyVrfSignature)
et.Track(m3.SmesherID, m3.Round, m3.Eligibility.Count, true)
tracker.OnPreRound(context.Background(), m3)
h = tracker.preRound[signer.NodeID()]
require.True(t, h.Equals(s.Union(nSet).Union(interSet)))
require.Equal(t, 0, tracker.tracker.CountStatus(types.ProposalID{1}).hCount)
require.Equal(t, 0, tracker.tracker.CountStatus(types.ProposalID{2}).hCount)
require.Equal(t, 0, tracker.tracker.CountStatus(types.ProposalID{3}).hCount)
require.Equal(t, 0, tracker.tracker.CountStatus(types.ProposalID{4}).hCount)
require.Equal(t, 0, tracker.tracker.CountStatus(types.ProposalID{5}).hCount)
require.Equal(t, 1, tracker.tracker.CountStatus(types.ProposalID{1}).dhCount)
require.Equal(t, 1, tracker.tracker.CountStatus(types.ProposalID{2}).dhCount)
require.Equal(t, 1, tracker.tracker.CountStatus(types.ProposalID{3}).dhCount)
require.Equal(t, 1, tracker.tracker.CountStatus(types.ProposalID{4}).dhCount)
require.Equal(t, 1, tracker.tracker.CountStatus(types.ProposalID{5}).dhCount)
require.Len(t, mch, 1)
signer2, err := signing.NewEdSigner()
require.NoError(t, err)
s4 := NewSetFromValues(types.ProposalID{1}, types.ProposalID{5})
m4 := BuildPreRoundMsg(signer2, s4, types.EmptyVrfSignature)
et.Track(m4.SmesherID, m4.Round, m4.Eligibility.Count, true)
tracker.OnPreRound(context.Background(), m4)
h = tracker.preRound[signer2.NodeID()]
require.True(t, h.Equals(s4))
require.Equal(t, 1, tracker.tracker.CountStatus(types.ProposalID{1}).hCount)
require.Equal(t, 0, tracker.tracker.CountStatus(types.ProposalID{2}).hCount)
require.Equal(t, 0, tracker.tracker.CountStatus(types.ProposalID{3}).hCount)
require.Equal(t, 0, tracker.tracker.CountStatus(types.ProposalID{4}).hCount)
require.Equal(t, 1, tracker.tracker.CountStatus(types.ProposalID{5}).hCount)
require.Equal(t, 1, tracker.tracker.CountStatus(types.ProposalID{1}).dhCount)
require.Equal(t, 1, tracker.tracker.CountStatus(types.ProposalID{2}).dhCount)
require.Equal(t, 1, tracker.tracker.CountStatus(types.ProposalID{3}).dhCount)
require.Equal(t, 1, tracker.tracker.CountStatus(types.ProposalID{4}).dhCount)
require.Equal(t, 1, tracker.tracker.CountStatus(types.ProposalID{5}).dhCount)
}
func TestPreRoundTracker_CanProveValueAndSet(t *testing.T) {
s := NewSetFromValues(types.ProposalID{1}, types.ProposalID{2})
et := NewEligibilityTracker(lowThresh10)
mch := make(chan *types.MalfeasanceGossip, lowThresh10)
tracker := newPreRoundTracker(logtest.New(t), mch, et, lowThresh10, lowThresh10)
for i := 0; i < lowThresh10; i++ {
require.False(t, tracker.CanProveSet(s))
sig, err := signing.NewEdSigner()
require.NoError(t, err)
m1 := BuildPreRoundMsg(sig, s, types.EmptyVrfSignature)
et.Track(m1.SmesherID, m1.Round, m1.Eligibility.Count, true)
tracker.OnPreRound(context.Background(), m1)
}
require.True(t, tracker.CanProveValue(types.ProposalID{1}))
require.True(t, tracker.CanProveValue(types.ProposalID{2}))
require.True(t, tracker.CanProveSet(s))
}
func TestPreRoundTracker_CanProveValueAndSet_WithKnownEquivocators(t *testing.T) {
s := NewSetFromValues(types.ProposalID{1}, types.ProposalID{2})
et := NewEligibilityTracker(lowThresh10)
mch := make(chan *types.MalfeasanceGossip, lowThresh10)
tracker := newPreRoundTracker(logtest.New(t), mch, et, lowThresh10, lowThresh10)
for i := 0; i < lowThresh10-1; i++ {
require.False(t, tracker.CanProveSet(s))
sig, err := signing.NewEdSigner()
require.NoError(t, err)
m := BuildPreRoundMsg(sig, s, types.EmptyVrfSignature)
et.Track(m.SmesherID, m.Round, m.Eligibility.Count, true)
tracker.OnPreRound(context.Background(), m)
}
require.False(t, tracker.CanProveValue(types.ProposalID{1}))
require.False(t, tracker.CanProveValue(types.ProposalID{2}))
require.False(t, tracker.CanProveSet(s))
// add a known equivocator
sig, err := signing.NewEdSigner()
require.NoError(t, err)
et.Track(sig.NodeID(), preRound, 1, false)
require.True(t, tracker.CanProveValue(types.ProposalID{1}))
require.True(t, tracker.CanProveValue(types.ProposalID{2}))
require.True(t, tracker.CanProveSet(s))
}
func TestPreRoundTracker_CanProveValueAndSet_TooFewKnownEquivocators(t *testing.T) {
s := NewSetFromValues(types.ProposalID{1}, types.ProposalID{2})
et := NewEligibilityTracker(lowThresh10)
mch := make(chan *types.MalfeasanceGossip, lowThresh10)
tracker := newPreRoundTracker(logtest.New(t), mch, et, lowThresh10+1, lowThresh10*2)
// add a known equivocator
for i := 0; i < lowThresh10-1; i++ {
sig, err := signing.NewEdSigner()
require.NoError(t, err)
et.Track(sig.NodeID(), preRound, 1, false)
}
require.False(t, tracker.CanProveSet(s))
sig, err := signing.NewEdSigner()
require.NoError(t, err)
m := BuildPreRoundMsg(sig, s, types.EmptyVrfSignature)
et.Track(m.SmesherID, m.Round, m.Eligibility.Count, true)
tracker.OnPreRound(context.Background(), m)
require.False(t, tracker.CanProveValue(types.ProposalID{1}))
require.False(t, tracker.CanProveValue(types.ProposalID{2}))
require.False(t, tracker.CanProveSet(s))
}
// Checks that equivocating nodes detected due to receipt of equivocating
// pre-round messages still contribute to the threshold calculation.
func TestPreRoundTracker_CanProveSet_EquivocatingPreRoundMessages(t *testing.T) {
signer1, err := signing.NewEdSigner()
require.NoError(t, err)
signer2, err := signing.NewEdSigner()
require.NoError(t, err)
s := NewSetFromValues(types.ProposalID{1})
s2 := NewSetFromValues(types.ProposalID{2})
et := NewEligibilityTracker(2)
mch := make(chan *types.MalfeasanceGossip, 2)
tracker := newPreRoundTracker(logtest.New(t), mch, et, 2, 2)
require.False(t, tracker.CanProveSet(s))
// Set up both participants to be eligible
m := BuildPreRoundMsg(signer1, s, types.EmptyVrfSignature)
et.Track(m.SmesherID, m.Round, m.Eligibility.Count, true)
m2 := BuildPreRoundMsg(signer2, s, types.EmptyVrfSignature)
et.Track(m2.SmesherID, m2.Round, m2.Eligibility.Count, true)
m3 := BuildPreRoundMsg(signer2, s2, types.EmptyVrfSignature)
// One message
tracker.OnPreRound(context.Background(), m2)
require.False(t, tracker.CanProveSet(s))
// Equivocation should be detected
tracker.OnPreRound(context.Background(), m3)
require.False(t, tracker.CanProveSet(s))
// One further message should cause threshold to be passed.
tracker.OnPreRound(context.Background(), m)
require.True(t, tracker.CanProveSet(s))
}
func TestPreRoundTracker_CanProveValueAndSet_TooHonestVotes(t *testing.T) {
s := NewSetFromValues(types.ProposalID{1}, types.ProposalID{2})
et := NewEligibilityTracker(lowThresh10)
mch := make(chan *types.MalfeasanceGossip, lowThresh10)
tracker := newPreRoundTracker(logtest.New(t), mch, et, lowThresh10+1, lowThresh10*2)
// add a known equivocator
for i := 0; i < lowThresh10*2; i++ {
sig, err := signing.NewEdSigner()
require.NoError(t, err)
et.Track(sig.NodeID(), preRound, 1, false)
}
require.False(t, tracker.CanProveValue(types.ProposalID{1}))
require.False(t, tracker.CanProveValue(types.ProposalID{2}))
require.False(t, tracker.CanProveSet(s))
}
func TestPreRoundTracker_CanProveValueAndSet_JustEnough(t *testing.T) {
s := NewSetFromValues(types.ProposalID{1}, types.ProposalID{2})
et := NewEligibilityTracker(lowThresh10)
mch := make(chan *types.MalfeasanceGossip, lowThresh10)
tracker := newPreRoundTracker(logtest.New(t), mch, et, lowThresh10+1, lowThresh10*2)
// add a known equivocator
for i := 0; i < lowThresh10; i++ {
sig, err := signing.NewEdSigner()
require.NoError(t, err)
et.Track(sig.NodeID(), preRound, 1, false)
}
require.False(t, tracker.CanProveSet(s))
sig, err := signing.NewEdSigner()
require.NoError(t, err)
m := BuildPreRoundMsg(sig, s, types.EmptyVrfSignature)
et.Track(m.SmesherID, m.Round, m.Eligibility.Count, true)
tracker.OnPreRound(context.Background(), m)
require.True(t, tracker.CanProveValue(types.ProposalID{1}))
require.True(t, tracker.CanProveValue(types.ProposalID{2}))
require.True(t, tracker.CanProveSet(s))
}
func TestPreRoundTracker_UpdateSet(t *testing.T) {
et := NewEligibilityTracker(2)
mch := make(chan *types.MalfeasanceGossip, 2)
tracker := newPreRoundTracker(logtest.New(t), mch, et, 2, 2)
sig1, err := signing.NewEdSigner()
require.NoError(t, err)
sig2, err := signing.NewEdSigner()
require.NoError(t, err)
s1 := NewSetFromValues(types.ProposalID{1}, types.ProposalID{2}, types.ProposalID{3})
s2 := NewSetFromValues(types.ProposalID{1}, types.ProposalID{2}, types.ProposalID{4})
prMsg1 := BuildPreRoundMsg(sig1, s1, types.EmptyVrfSignature)
et.Track(prMsg1.SmesherID, prMsg1.Round, prMsg1.Eligibility.Count, true)
tracker.OnPreRound(context.Background(), prMsg1)
prMsg2 := BuildPreRoundMsg(sig2, s2, types.EmptyVrfSignature)
et.Track(prMsg2.SmesherID, prMsg2.Round, prMsg2.Eligibility.Count, true)
tracker.OnPreRound(context.Background(), prMsg2)
require.True(t, tracker.CanProveValue(types.ProposalID{1}))
require.True(t, tracker.CanProveValue(types.ProposalID{2}))
require.False(t, tracker.CanProveSet(s1))
require.False(t, tracker.CanProveSet(s2))
require.Empty(t, mch)
}
func TestPreRoundTracker_OnPreRound2(t *testing.T) {
et := NewEligibilityTracker(2)
mch := make(chan *types.MalfeasanceGossip, 2)
tracker := newPreRoundTracker(logtest.New(t), mch, et, 2, 2)
s1 := NewSetFromValues(types.ProposalID{1})
sig, err := signing.NewEdSigner()
require.NoError(t, err)
prMsg1 := BuildPreRoundMsg(sig, s1, types.EmptyVrfSignature)
et.Track(prMsg1.SmesherID, prMsg1.Round, prMsg1.Eligibility.Count, true)
tracker.OnPreRound(context.Background(), prMsg1)
require.Equal(t, 1, len(tracker.preRound))
prMsg2 := BuildPreRoundMsg(sig, s1, types.EmptyVrfSignature)
et.Track(prMsg2.SmesherID, prMsg2.Round, prMsg2.Eligibility.Count, true)
tracker.OnPreRound(context.Background(), prMsg2)
require.Equal(t, 1, len(tracker.preRound))
require.Empty(t, mch)
}
func TestPreRoundTracker_FilterSet(t *testing.T) {
et := NewEligibilityTracker(2)
mch := make(chan *types.MalfeasanceGossip, 2)
tracker := newPreRoundTracker(logtest.New(t), mch, et, 2, 2)
sig1, err := signing.NewEdSigner()
require.NoError(t, err)
sig2, err := signing.NewEdSigner()
require.NoError(t, err)
s1 := NewSetFromValues(types.ProposalID{1}, types.ProposalID{2})
prMsg1 := BuildPreRoundMsg(sig1, s1, types.EmptyVrfSignature)
et.Track(prMsg1.SmesherID, prMsg1.Round, prMsg1.Eligibility.Count, true)
tracker.OnPreRound(context.Background(), prMsg1)
prMsg2 := BuildPreRoundMsg(sig2, s1, types.EmptyVrfSignature)
et.Track(prMsg2.SmesherID, prMsg2.Round, prMsg2.Eligibility.Count, true)
tracker.OnPreRound(context.Background(), prMsg2)
set := NewSetFromValues(types.ProposalID{1}, types.ProposalID{2}, types.ProposalID{3})
tracker.FilterSet(set)
require.True(t, set.Equals(s1))
require.Empty(t, mch)
}
func TestPreRoundTracker_BestVRF(t *testing.T) {
r := require.New(t)
var (
sig411 = types.VrfSignature{ // coinflip false
0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x04,
}
sig322 = types.VrfSignature{ // coinflip true
0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x02, 0x03,
}
sig177 = types.VrfSignature{ // coinflip true
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x07, 0x01,
}
sig0a7 = types.VrfSignature{ // coinflip false
0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x0a, 0x00,
}
)
values := []struct {
proof types.VrfSignature
bestVal types.VrfSignature
coin bool
}{
// order matters! lowest VRF value wins
// first is input bytes, second is lowest val seen so far,
// fourth is lowest-order bit (big endian) of lowest value
{sig411, sig411, false},
{sig322, sig322, true},
{sig177, sig177, true},
{sig411, sig177, true},
{sig322, sig177, true},
{sig0a7, sig0a7, false},
}
// check default coin value
et := NewEligibilityTracker(2)
tracker := newPreRoundTracker(logtest.New(t), make(chan *types.MalfeasanceGossip, 2), et, 2, 2)
r.False(tracker.coinflip, "expected initial coinflip value to be false")
r.Nil(tracker.bestVRF, "expected initial best VRF to be nil")
s1 := NewSetFromValues(types.ProposalID{1}, types.ProposalID{2})
for _, v := range values {
sig, err := signing.NewEdSigner()
require.NoError(t, err)
prMsg := BuildPreRoundMsg(sig, s1, v.proof)
tracker.OnPreRound(context.Background(), prMsg)
r.Equalf(v.bestVal, *tracker.bestVRF, "mismatch in best VRF value for input %s", v.proof)
r.Equalf(v.coin, tracker.coinflip, "mismatch in weak coin flip for input %s", v.proof)
}
}