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package state_test
import (
"context"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
dbm "github.com/tendermint/tm-db"
abciclient "github.com/tendermint/tendermint/abci/client"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/crypto"
"github.com/tendermint/tendermint/crypto/ed25519"
"github.com/tendermint/tendermint/crypto/encoding"
"github.com/tendermint/tendermint/crypto/tmhash"
"github.com/tendermint/tendermint/internal/eventbus"
mmock "github.com/tendermint/tendermint/internal/mempool/mock"
"github.com/tendermint/tendermint/internal/proxy"
"github.com/tendermint/tendermint/internal/pubsub"
sm "github.com/tendermint/tendermint/internal/state"
"github.com/tendermint/tendermint/internal/state/mocks"
sf "github.com/tendermint/tendermint/internal/state/test/factory"
"github.com/tendermint/tendermint/internal/store"
"github.com/tendermint/tendermint/libs/log"
tmtime "github.com/tendermint/tendermint/libs/time"
"github.com/tendermint/tendermint/types"
"github.com/tendermint/tendermint/version"
)
var (
chainID = "execution_chain"
testPartSize uint32 = 65536
)
func TestApplyBlock(t *testing.T) {
app := &testApp{}
cc := abciclient.NewLocalCreator(app)
logger := log.TestingLogger()
proxyApp := proxy.NewAppConns(cc, logger, proxy.NopMetrics())
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
err := proxyApp.Start(ctx)
require.Nil(t, err)
state, stateDB, _ := makeState(1, 1)
stateStore := sm.NewStore(stateDB)
blockStore := store.NewBlockStore(dbm.NewMemDB())
blockExec := sm.NewBlockExecutor(stateStore, logger, proxyApp.Consensus(),
mmock.Mempool{}, sm.EmptyEvidencePool{}, blockStore)
block := sf.MakeBlock(state, 1, new(types.Commit))
blockID := types.BlockID{Hash: block.Hash(), PartSetHeader: block.MakePartSet(testPartSize).Header()}
state, err = blockExec.ApplyBlock(ctx, state, blockID, block)
require.Nil(t, err)
// TODO check state and mempool
assert.EqualValues(t, 1, state.Version.Consensus.App, "App version wasn't updated")
}
// TestBeginBlockValidators ensures we send absent validators list.
func TestBeginBlockValidators(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
app := &testApp{}
cc := abciclient.NewLocalCreator(app)
proxyApp := proxy.NewAppConns(cc, log.TestingLogger(), proxy.NopMetrics())
err := proxyApp.Start(ctx)
require.Nil(t, err)
state, stateDB, _ := makeState(2, 2)
stateStore := sm.NewStore(stateDB)
prevHash := state.LastBlockID.Hash
prevParts := types.PartSetHeader{}
prevBlockID := types.BlockID{Hash: prevHash, PartSetHeader: prevParts}
var (
now = tmtime.Now()
commitSig0 = types.NewCommitSigForBlock(
[]byte("Signature1"),
state.Validators.Validators[0].Address,
now)
commitSig1 = types.NewCommitSigForBlock(
[]byte("Signature2"),
state.Validators.Validators[1].Address,
now)
absentSig = types.NewCommitSigAbsent()
)
testCases := []struct {
desc string
lastCommitSigs []types.CommitSig
expectedAbsentValidators []int
}{
{"none absent", []types.CommitSig{commitSig0, commitSig1}, []int{}},
{"one absent", []types.CommitSig{commitSig0, absentSig}, []int{1}},
{"multiple absent", []types.CommitSig{absentSig, absentSig}, []int{0, 1}},
}
for _, tc := range testCases {
lastCommit := types.NewCommit(1, 0, prevBlockID, tc.lastCommitSigs)
// block for height 2
block := sf.MakeBlock(state, 2, lastCommit)
_, err = sm.ExecCommitBlock(ctx, nil, proxyApp.Consensus(), block, log.TestingLogger(), stateStore, 1, state)
require.Nil(t, err, tc.desc)
// -> app receives a list of validators with a bool indicating if they signed
ctr := 0
for i, v := range app.CommitVotes {
if ctr < len(tc.expectedAbsentValidators) &&
tc.expectedAbsentValidators[ctr] == i {
assert.False(t, v.SignedLastBlock)
ctr++
} else {
assert.True(t, v.SignedLastBlock)
}
}
}
}
// TestBeginBlockByzantineValidators ensures we send byzantine validators list.
func TestBeginBlockByzantineValidators(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
app := &testApp{}
cc := abciclient.NewLocalCreator(app)
proxyApp := proxy.NewAppConns(cc, log.TestingLogger(), proxy.NopMetrics())
err := proxyApp.Start(ctx)
require.Nil(t, err)
state, stateDB, privVals := makeState(1, 1)
stateStore := sm.NewStore(stateDB)
defaultEvidenceTime := time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
privVal := privVals[state.Validators.Validators[0].Address.String()]
blockID := makeBlockID([]byte("headerhash"), 1000, []byte("partshash"))
header := &types.Header{
Version: version.Consensus{Block: version.BlockProtocol, App: 1},
ChainID: state.ChainID,
Height: 10,
Time: defaultEvidenceTime,
LastBlockID: blockID,
LastCommitHash: crypto.CRandBytes(tmhash.Size),
DataHash: crypto.CRandBytes(tmhash.Size),
ValidatorsHash: state.Validators.Hash(),
NextValidatorsHash: state.Validators.Hash(),
ConsensusHash: crypto.CRandBytes(tmhash.Size),
AppHash: crypto.CRandBytes(tmhash.Size),
LastResultsHash: crypto.CRandBytes(tmhash.Size),
EvidenceHash: crypto.CRandBytes(tmhash.Size),
ProposerAddress: crypto.CRandBytes(crypto.AddressSize),
}
// we don't need to worry about validating the evidence as long as they pass validate basic
dve := types.NewMockDuplicateVoteEvidenceWithValidator(3, defaultEvidenceTime, privVal, state.ChainID)
dve.ValidatorPower = 1000
lcae := &types.LightClientAttackEvidence{
ConflictingBlock: &types.LightBlock{
SignedHeader: &types.SignedHeader{
Header: header,
Commit: types.NewCommit(10, 0, makeBlockID(header.Hash(), 100, []byte("partshash")), []types.CommitSig{{
BlockIDFlag: types.BlockIDFlagNil,
ValidatorAddress: crypto.AddressHash([]byte("validator_address")),
Timestamp: defaultEvidenceTime,
Signature: crypto.CRandBytes(types.MaxSignatureSize),
}}),
},
ValidatorSet: state.Validators,
},
CommonHeight: 8,
ByzantineValidators: []*types.Validator{state.Validators.Validators[0]},
TotalVotingPower: 12,
Timestamp: defaultEvidenceTime,
}
ev := []types.Evidence{dve, lcae}
abciEv := []abci.Evidence{
{
Type: abci.EvidenceType_DUPLICATE_VOTE,
Height: 3,
Time: defaultEvidenceTime,
Validator: types.TM2PB.Validator(state.Validators.Validators[0]),
TotalVotingPower: 10,
},
{
Type: abci.EvidenceType_LIGHT_CLIENT_ATTACK,
Height: 8,
Time: defaultEvidenceTime,
Validator: types.TM2PB.Validator(state.Validators.Validators[0]),
TotalVotingPower: 12,
},
}
evpool := &mocks.EvidencePool{}
evpool.On("PendingEvidence", mock.AnythingOfType("int64")).Return(ev, int64(100))
evpool.On("Update", mock.AnythingOfType("state.State"), mock.AnythingOfType("types.EvidenceList")).Return()
evpool.On("CheckEvidence", mock.AnythingOfType("types.EvidenceList")).Return(nil)
blockStore := store.NewBlockStore(dbm.NewMemDB())
blockExec := sm.NewBlockExecutor(stateStore, log.TestingLogger(), proxyApp.Consensus(),
mmock.Mempool{}, evpool, blockStore)
block := sf.MakeBlock(state, 1, new(types.Commit))
block.Evidence = types.EvidenceData{Evidence: ev}
block.Header.EvidenceHash = block.Evidence.Hash()
blockID = types.BlockID{Hash: block.Hash(), PartSetHeader: block.MakePartSet(testPartSize).Header()}
_, err = blockExec.ApplyBlock(ctx, state, blockID, block)
require.Nil(t, err)
// TODO check state and mempool
assert.Equal(t, abciEv, app.ByzantineValidators)
}
func TestValidateValidatorUpdates(t *testing.T) {
pubkey1 := ed25519.GenPrivKey().PubKey()
pubkey2 := ed25519.GenPrivKey().PubKey()
pk1, err := encoding.PubKeyToProto(pubkey1)
assert.NoError(t, err)
pk2, err := encoding.PubKeyToProto(pubkey2)
assert.NoError(t, err)
defaultValidatorParams := types.ValidatorParams{PubKeyTypes: []string{types.ABCIPubKeyTypeEd25519}}
testCases := []struct {
name string
abciUpdates []abci.ValidatorUpdate
validatorParams types.ValidatorParams
shouldErr bool
}{
{
"adding a validator is OK",
[]abci.ValidatorUpdate{{PubKey: pk2, Power: 20}},
defaultValidatorParams,
false,
},
{
"updating a validator is OK",
[]abci.ValidatorUpdate{{PubKey: pk1, Power: 20}},
defaultValidatorParams,
false,
},
{
"removing a validator is OK",
[]abci.ValidatorUpdate{{PubKey: pk2, Power: 0}},
defaultValidatorParams,
false,
},
{
"adding a validator with negative power results in error",
[]abci.ValidatorUpdate{{PubKey: pk2, Power: -100}},
defaultValidatorParams,
true,
},
}
for _, tc := range testCases {
tc := tc
t.Run(tc.name, func(t *testing.T) {
err := sm.ValidateValidatorUpdates(tc.abciUpdates, tc.validatorParams)
if tc.shouldErr {
assert.Error(t, err)
} else {
assert.NoError(t, err)
}
})
}
}
func TestUpdateValidators(t *testing.T) {
pubkey1 := ed25519.GenPrivKey().PubKey()
val1 := types.NewValidator(pubkey1, 10)
pubkey2 := ed25519.GenPrivKey().PubKey()
val2 := types.NewValidator(pubkey2, 20)
pk, err := encoding.PubKeyToProto(pubkey1)
require.NoError(t, err)
pk2, err := encoding.PubKeyToProto(pubkey2)
require.NoError(t, err)
testCases := []struct {
name string
currentSet *types.ValidatorSet
abciUpdates []abci.ValidatorUpdate
resultingSet *types.ValidatorSet
shouldErr bool
}{
{
"adding a validator is OK",
types.NewValidatorSet([]*types.Validator{val1}),
[]abci.ValidatorUpdate{{PubKey: pk2, Power: 20}},
types.NewValidatorSet([]*types.Validator{val1, val2}),
false,
},
{
"updating a validator is OK",
types.NewValidatorSet([]*types.Validator{val1}),
[]abci.ValidatorUpdate{{PubKey: pk, Power: 20}},
types.NewValidatorSet([]*types.Validator{types.NewValidator(pubkey1, 20)}),
false,
},
{
"removing a validator is OK",
types.NewValidatorSet([]*types.Validator{val1, val2}),
[]abci.ValidatorUpdate{{PubKey: pk2, Power: 0}},
types.NewValidatorSet([]*types.Validator{val1}),
false,
},
{
"removing a non-existing validator results in error",
types.NewValidatorSet([]*types.Validator{val1}),
[]abci.ValidatorUpdate{{PubKey: pk2, Power: 0}},
types.NewValidatorSet([]*types.Validator{val1}),
true,
},
}
for _, tc := range testCases {
tc := tc
t.Run(tc.name, func(t *testing.T) {
updates, err := types.PB2TM.ValidatorUpdates(tc.abciUpdates)
assert.NoError(t, err)
err = tc.currentSet.UpdateWithChangeSet(updates)
if tc.shouldErr {
assert.Error(t, err)
} else {
assert.NoError(t, err)
require.Equal(t, tc.resultingSet.Size(), tc.currentSet.Size())
assert.Equal(t, tc.resultingSet.TotalVotingPower(), tc.currentSet.TotalVotingPower())
assert.Equal(t, tc.resultingSet.Validators[0].Address, tc.currentSet.Validators[0].Address)
if tc.resultingSet.Size() > 1 {
assert.Equal(t, tc.resultingSet.Validators[1].Address, tc.currentSet.Validators[1].Address)
}
}
})
}
}
// TestEndBlockValidatorUpdates ensures we update validator set and send an event.
func TestEndBlockValidatorUpdates(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
app := &testApp{}
cc := abciclient.NewLocalCreator(app)
logger := log.TestingLogger()
proxyApp := proxy.NewAppConns(cc, logger, proxy.NopMetrics())
err := proxyApp.Start(ctx)
require.Nil(t, err)
state, stateDB, _ := makeState(1, 1)
stateStore := sm.NewStore(stateDB)
blockStore := store.NewBlockStore(dbm.NewMemDB())
blockExec := sm.NewBlockExecutor(
stateStore,
logger,
proxyApp.Consensus(),
mmock.Mempool{},
sm.EmptyEvidencePool{},
blockStore,
)
eventBus := eventbus.NewDefault(logger)
err = eventBus.Start(ctx)
require.NoError(t, err)
defer eventBus.Stop() //nolint:errcheck // ignore for tests
blockExec.SetEventBus(eventBus)
updatesSub, err := eventBus.SubscribeWithArgs(context.Background(), pubsub.SubscribeArgs{
ClientID: "TestEndBlockValidatorUpdates",
Query: types.EventQueryValidatorSetUpdates,
})
require.NoError(t, err)
block := sf.MakeBlock(state, 1, new(types.Commit))
blockID := types.BlockID{Hash: block.Hash(), PartSetHeader: block.MakePartSet(testPartSize).Header()}
pubkey := ed25519.GenPrivKey().PubKey()
pk, err := encoding.PubKeyToProto(pubkey)
require.NoError(t, err)
app.ValidatorUpdates = []abci.ValidatorUpdate{
{PubKey: pk, Power: 10},
}
state, err = blockExec.ApplyBlock(ctx, state, blockID, block)
require.Nil(t, err)
// test new validator was added to NextValidators
if assert.Equal(t, state.Validators.Size()+1, state.NextValidators.Size()) {
idx, _ := state.NextValidators.GetByAddress(pubkey.Address())
if idx < 0 {
t.Fatalf("can't find address %v in the set %v", pubkey.Address(), state.NextValidators)
}
}
// test we threw an event
ctx, cancel = context.WithTimeout(ctx, 1*time.Second)
defer cancel()
msg, err := updatesSub.Next(ctx)
require.NoError(t, err)
event, ok := msg.Data().(types.EventDataValidatorSetUpdates)
require.True(t, ok, "Expected event of type EventDataValidatorSetUpdates, got %T", msg.Data())
if assert.NotEmpty(t, event.ValidatorUpdates) {
assert.Equal(t, pubkey, event.ValidatorUpdates[0].PubKey)
assert.EqualValues(t, 10, event.ValidatorUpdates[0].VotingPower)
}
}
// TestEndBlockValidatorUpdatesResultingInEmptySet checks that processing validator updates that
// would result in empty set causes no panic, an error is raised and NextValidators is not updated
func TestEndBlockValidatorUpdatesResultingInEmptySet(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
app := &testApp{}
cc := abciclient.NewLocalCreator(app)
logger := log.TestingLogger()
proxyApp := proxy.NewAppConns(cc, logger, proxy.NopMetrics())
err := proxyApp.Start(ctx)
require.Nil(t, err)
state, stateDB, _ := makeState(1, 1)
stateStore := sm.NewStore(stateDB)
blockStore := store.NewBlockStore(dbm.NewMemDB())
blockExec := sm.NewBlockExecutor(
stateStore,
log.TestingLogger(),
proxyApp.Consensus(),
mmock.Mempool{},
sm.EmptyEvidencePool{},
blockStore,
)
block := sf.MakeBlock(state, 1, new(types.Commit))
blockID := types.BlockID{Hash: block.Hash(), PartSetHeader: block.MakePartSet(testPartSize).Header()}
vp, err := encoding.PubKeyToProto(state.Validators.Validators[0].PubKey)
require.NoError(t, err)
// Remove the only validator
app.ValidatorUpdates = []abci.ValidatorUpdate{
{PubKey: vp, Power: 0},
}
assert.NotPanics(t, func() { state, err = blockExec.ApplyBlock(ctx, state, blockID, block) })
assert.NotNil(t, err)
assert.NotEmpty(t, state.NextValidators.Validators)
}
func makeBlockID(hash []byte, partSetSize uint32, partSetHash []byte) types.BlockID {
var (
h = make([]byte, tmhash.Size)
psH = make([]byte, tmhash.Size)
)
copy(h, hash)
copy(psH, partSetHash)
return types.BlockID{
Hash: h,
PartSetHeader: types.PartSetHeader{
Total: partSetSize,
Hash: psH,
},
}
}