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478 lines
14 KiB
478 lines
14 KiB
package evidence
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import (
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"os"
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"testing"
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"time"
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"github.com/gogo/protobuf/proto"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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dbm "github.com/tendermint/tm-db"
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"github.com/tendermint/tendermint/crypto"
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"github.com/tendermint/tendermint/libs/bytes"
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"github.com/tendermint/tendermint/libs/log"
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tmrand "github.com/tendermint/tendermint/libs/rand"
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tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
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sm "github.com/tendermint/tendermint/state"
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"github.com/tendermint/tendermint/store"
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"github.com/tendermint/tendermint/types"
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tmtime "github.com/tendermint/tendermint/types/time"
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)
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func TestMain(m *testing.M) {
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code := m.Run()
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os.Exit(code)
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}
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const evidenceChainID = "test_chain"
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func TestEvidencePool(t *testing.T) {
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var (
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valAddr = tmrand.Bytes(crypto.AddressSize)
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height = int64(52)
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stateDB = initializeValidatorState(valAddr, height)
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evidenceDB = dbm.NewMemDB()
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blockStoreDB = dbm.NewMemDB()
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blockStore = initializeBlockStore(blockStoreDB, sm.LoadState(stateDB), valAddr)
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evidenceTime = time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
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goodEvidence = types.NewMockEvidence(height, time.Now(), valAddr)
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badEvidence = types.NewMockEvidence(1, evidenceTime, valAddr)
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)
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pool, err := NewPool(stateDB, evidenceDB, blockStore)
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require.NoError(t, err)
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// bad evidence
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err = pool.AddEvidence(badEvidence)
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if assert.Error(t, err) {
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assert.Contains(t, err.Error(), "is too old; min height is 32 and evidence can not be older than")
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}
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assert.False(t, pool.IsPending(badEvidence))
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assert.True(t, pool.IsEvidenceExpired(badEvidence))
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// good evidence
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evAdded := make(chan struct{})
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go func() {
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<-pool.EvidenceWaitChan()
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close(evAdded)
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}()
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err = pool.AddEvidence(goodEvidence)
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require.NoError(t, err)
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select {
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case <-evAdded:
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case <-time.After(5 * time.Second):
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t.Fatal("evidence was not added to list after 5s")
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}
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assert.Equal(t, 1, pool.evidenceList.Len())
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// if we send it again, it shouldnt add and return an error
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err = pool.AddEvidence(goodEvidence)
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assert.NoError(t, err)
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assert.Equal(t, 1, pool.evidenceList.Len())
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}
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func TestProposingAndCommittingEvidence(t *testing.T) {
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var (
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valAddr = tmrand.Bytes(crypto.AddressSize)
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height = int64(1)
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stateDB = initializeValidatorState(valAddr, height)
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evidenceDB = dbm.NewMemDB()
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blockStoreDB = dbm.NewMemDB()
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blockStore = initializeBlockStore(blockStoreDB, sm.LoadState(stateDB), valAddr)
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evidenceTime = time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
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)
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pool, err := NewPool(stateDB, evidenceDB, blockStore)
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require.NoError(t, err)
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// evidence not seen yet:
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evidence := types.NewMockEvidence(height, evidenceTime, valAddr)
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assert.False(t, pool.IsCommitted(evidence))
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// evidence seen but not yet committed:
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assert.NoError(t, pool.AddEvidence(evidence))
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assert.False(t, pool.IsCommitted(evidence))
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// test evidence is proposed
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proposedEvidence := pool.AllPendingEvidence()
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assert.Equal(t, proposedEvidence[0], evidence)
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// evidence seen and committed:
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pool.MarkEvidenceAsCommitted(height, proposedEvidence)
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assert.True(t, pool.IsCommitted(evidence))
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assert.False(t, pool.IsPending(evidence))
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assert.Equal(t, 0, pool.evidenceList.Len())
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// evidence should
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}
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func TestAddEvidence(t *testing.T) {
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var (
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valAddr = tmrand.Bytes(crypto.AddressSize)
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height = int64(30)
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stateDB = initializeValidatorState(valAddr, height)
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evidenceDB = dbm.NewMemDB()
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blockStoreDB = dbm.NewMemDB()
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blockStore = initializeBlockStore(blockStoreDB, sm.LoadState(stateDB), valAddr)
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evidenceTime = time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
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)
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pool, err := NewPool(stateDB, evidenceDB, blockStore)
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require.NoError(t, err)
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testCases := []struct {
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evHeight int64
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evTime time.Time
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expErr bool
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evDescription string
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}{
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{height, time.Now(), false, "valid evidence"},
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{height, evidenceTime, false, "valid evidence (despite old time)"},
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{int64(1), time.Now(), false, "valid evidence (despite old height)"},
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{int64(1), evidenceTime, true,
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"evidence from height 1 (created at: 2019-01-01 00:00:00 +0000 UTC) is too old"},
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}
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for _, tc := range testCases {
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tc := tc
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t.Run(tc.evDescription, func(t *testing.T) {
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ev := types.NewMockEvidence(tc.evHeight, tc.evTime, valAddr)
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err := pool.AddEvidence(ev)
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if tc.expErr {
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assert.Error(t, err)
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t.Log(err)
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}
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})
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}
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}
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func TestEvidencePoolUpdate(t *testing.T) {
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var (
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valAddr = tmrand.Bytes(crypto.AddressSize)
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height = int64(21)
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stateDB = initializeValidatorState(valAddr, height)
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evidenceDB = dbm.NewMemDB()
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blockStoreDB = dbm.NewMemDB()
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state = sm.LoadState(stateDB)
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blockStore = initializeBlockStore(blockStoreDB, state, valAddr)
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)
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pool, err := NewPool(stateDB, evidenceDB, blockStore)
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require.NoError(t, err)
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// create new block (no need to save it to blockStore)
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evidence := types.NewMockEvidence(height, time.Now(), valAddr)
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lastCommit := makeCommit(height, valAddr)
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block := types.MakeBlock(height+1, []types.Tx{}, lastCommit, []types.Evidence{evidence})
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// update state (partially)
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state.LastBlockHeight = height + 1
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pool.Update(block, state)
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// a) Update marks evidence as committed
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assert.True(t, pool.IsCommitted(evidence))
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// b) Update updates valToLastHeight map
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assert.Equal(t, height+1, pool.ValidatorLastHeight(valAddr))
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}
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func TestEvidencePoolNewPool(t *testing.T) {
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var (
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valAddr = tmrand.Bytes(crypto.AddressSize)
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height = int64(1)
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stateDB = initializeValidatorState(valAddr, height)
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evidenceDB = dbm.NewMemDB()
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blockStoreDB = dbm.NewMemDB()
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state = sm.LoadState(stateDB)
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blockStore = initializeBlockStore(blockStoreDB, state, valAddr)
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)
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pool, err := NewPool(stateDB, evidenceDB, blockStore)
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require.NoError(t, err)
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assert.Equal(t, height, pool.ValidatorLastHeight(valAddr))
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assert.EqualValues(t, 0, pool.ValidatorLastHeight([]byte("non-existent-validator")))
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}
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func TestAddingAndPruningPOLC(t *testing.T) {
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var (
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valAddr = tmrand.Bytes(crypto.AddressSize)
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stateDB = initializeValidatorState(valAddr, 1)
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evidenceDB = dbm.NewMemDB()
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blockStoreDB = dbm.NewMemDB()
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state = sm.LoadState(stateDB)
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blockStore = initializeBlockStore(blockStoreDB, state, valAddr)
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height = state.ConsensusParams.Evidence.MaxAgeNumBlocks * 2
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evidenceTime = time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
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)
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pubKey, _ := types.NewMockPV().GetPubKey()
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polc := types.NewMockPOLC(1, evidenceTime, pubKey)
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pool, err := NewPool(stateDB, evidenceDB, blockStore)
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require.NoError(t, err)
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err = pool.AddPOLC(polc)
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assert.NoError(t, err)
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// should be able to retrieve polc
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newPolc, err := pool.RetrievePOLC(1, 1)
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assert.NoError(t, err)
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assert.True(t, polc.Equal(newPolc))
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// should not be able to retrieve
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emptyPolc, err := pool.RetrievePOLC(2, 1)
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assert.Error(t, err)
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assert.Equal(t, types.ProofOfLockChange{}, emptyPolc)
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lastCommit := makeCommit(height-1, valAddr)
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block := types.MakeBlock(height, []types.Tx{}, lastCommit, []types.Evidence{})
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// update state (partially)
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state.LastBlockHeight = height
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pool.state.LastBlockHeight = height
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// update should prune the polc
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pool.Update(block, state)
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emptyPolc, err = pool.RetrievePOLC(1, 1)
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assert.Error(t, err)
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assert.Equal(t, types.ProofOfLockChange{}, emptyPolc)
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}
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func TestRecoverPendingEvidence(t *testing.T) {
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var (
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valAddr = tmrand.Bytes(crypto.AddressSize)
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height = int64(30)
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stateDB = initializeValidatorState(valAddr, height)
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evidenceDB = dbm.NewMemDB()
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blockStoreDB = dbm.NewMemDB()
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state = sm.LoadState(stateDB)
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blockStore = initializeBlockStore(blockStoreDB, state, valAddr)
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evidenceTime = time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
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goodEvidence = types.NewMockEvidence(height, time.Now(), valAddr)
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expiredEvidence = types.NewMockEvidence(int64(1), evidenceTime, valAddr)
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)
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// load good evidence
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goodKey := keyPending(goodEvidence)
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evi, err := types.EvidenceToProto(goodEvidence)
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require.NoError(t, err)
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goodEvidenceBytes, err := proto.Marshal(evi)
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require.NoError(t, err)
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_ = evidenceDB.Set(goodKey, goodEvidenceBytes)
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// load expired evidence
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expiredKey := keyPending(expiredEvidence)
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eevi, err := types.EvidenceToProto(expiredEvidence)
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require.NoError(t, err)
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expiredEvidenceBytes, err := proto.Marshal(eevi)
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require.NoError(t, err)
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_ = evidenceDB.Set(expiredKey, expiredEvidenceBytes)
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pool, err := NewPool(stateDB, evidenceDB, blockStore)
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require.NoError(t, err)
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assert.Equal(t, 1, pool.evidenceList.Len())
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assert.True(t, pool.IsPending(goodEvidence))
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}
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func TestPotentialAmnesiaEvidence(t *testing.T) {
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var (
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val = types.NewMockPV()
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pubKey = val.PrivKey.PubKey()
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valSet = &types.ValidatorSet{
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Validators: []*types.Validator{
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val.ExtractIntoValidator(0),
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},
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Proposer: val.ExtractIntoValidator(0),
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}
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height = int64(30)
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stateDB = initializeStateFromValidatorSet(valSet, height)
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evidenceDB = dbm.NewMemDB()
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blockStoreDB = dbm.NewMemDB()
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state = sm.LoadState(stateDB)
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blockStore = initializeBlockStore(blockStoreDB, state, pubKey.Address())
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//evidenceTime = time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
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firstBlockID = types.BlockID{
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Hash: []byte("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"),
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PartSetHeader: types.PartSetHeader{
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Total: 1,
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Hash: []byte("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"),
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},
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}
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secondBlockID = types.BlockID{
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Hash: []byte("bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"),
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PartSetHeader: types.PartSetHeader{
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Total: 1,
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Hash: []byte("bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"),
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},
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}
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evidenceTime = time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
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)
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pool, err := NewPool(stateDB, evidenceDB, blockStore)
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require.NoError(t, err)
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pool.SetLogger(log.TestingLogger())
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polc := types.NewMockPOLC(25, evidenceTime, pubKey)
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err = pool.AddPOLC(polc)
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require.NoError(t, err)
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_, err = pool.RetrievePOLC(25, 1)
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require.NoError(t, err)
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voteA := makeVote(25, 0, 0, pubKey.Address(), firstBlockID)
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vA := voteA.ToProto()
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err = val.SignVote(evidenceChainID, vA)
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voteA.Signature = vA.Signature
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require.NoError(t, err)
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voteB := makeVote(25, 1, 0, pubKey.Address(), secondBlockID)
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vB := voteB.ToProto()
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err = val.SignVote(evidenceChainID, vB)
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voteB.Signature = vB.Signature
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require.NoError(t, err)
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voteC := makeVote(25, 0, 0, pubKey.Address(), firstBlockID)
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voteC.Timestamp.Add(1 * time.Second)
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vC := voteC.ToProto()
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err = val.SignVote(evidenceChainID, vC)
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voteC.Signature = vC.Signature
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require.NoError(t, err)
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ev := types.PotentialAmnesiaEvidence{
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VoteA: voteA,
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VoteB: voteB,
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}
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// we expect the evidence pool to find the polc but log an error as the polc is not valid -> vote was
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// not from a validator in this set. However, an error isn't thrown because the evidence pool
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// should still be able to save the regular potential amnesia evidence.
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err = pool.AddEvidence(ev)
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assert.NoError(t, err)
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// evidence requires trial period until it is available -> we expect no evidence to be returned
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assert.Equal(t, 0, len(pool.PendingEvidence(1)))
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nextHeight := pool.nextEvidenceTrialEndedHeight
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assert.Greater(t, nextHeight, int64(0))
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// evidence is not ready to be upgraded so we return the height we expect the evidence to be.
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nextHeight = pool.upgradePotentialAmnesiaEvidence()
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assert.Equal(t, height+pool.state.ConsensusParams.Evidence.ProofTrialPeriod, nextHeight)
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// now evidence is ready to be upgraded to amnesia evidence -> we expect -1 to be the next height as their is
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// no more pending potential amnesia evidence left
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pool.state.LastBlockHeight = nextHeight
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nextHeight = pool.upgradePotentialAmnesiaEvidence()
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assert.Equal(t, int64(-1), nextHeight)
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assert.Equal(t, 1, len(pool.PendingEvidence(1)))
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// evidence of voting back in the past which is instantly punishable -> amnesia evidence is made directly
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voteA.Timestamp.Add(1 * time.Second)
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ev2 := types.PotentialAmnesiaEvidence{
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VoteA: voteB,
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VoteB: voteC,
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}
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err = pool.AddEvidence(ev2)
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assert.NoError(t, err)
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assert.Equal(t, 2, len(pool.AllPendingEvidence()))
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}
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func initializeStateFromValidatorSet(valSet *types.ValidatorSet, height int64) dbm.DB {
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stateDB := dbm.NewMemDB()
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state := sm.State{
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ChainID: evidenceChainID,
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LastBlockHeight: height,
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LastBlockTime: tmtime.Now(),
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Validators: valSet,
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NextValidators: valSet.CopyIncrementProposerPriority(1),
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LastValidators: valSet,
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LastHeightValidatorsChanged: 1,
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ConsensusParams: tmproto.ConsensusParams{
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Block: tmproto.BlockParams{
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MaxBytes: 22020096,
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MaxGas: -1,
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},
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Evidence: tmproto.EvidenceParams{
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MaxAgeNumBlocks: 20,
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MaxAgeDuration: 48 * time.Hour,
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MaxNum: 50,
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ProofTrialPeriod: 1,
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},
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},
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}
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// save all states up to height
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for i := int64(0); i <= height; i++ {
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state.LastBlockHeight = i
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sm.SaveState(stateDB, state)
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}
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return stateDB
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}
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func initializeValidatorState(valAddr []byte, height int64) dbm.DB {
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pubKey, _ := types.NewMockPV().GetPubKey()
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validator := &types.Validator{Address: valAddr, VotingPower: 0, PubKey: pubKey}
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// create validator set and state
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valSet := &types.ValidatorSet{
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Validators: []*types.Validator{validator},
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Proposer: validator,
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}
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return initializeStateFromValidatorSet(valSet, height)
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}
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// initializeBlockStore creates a block storage and populates it w/ a dummy
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// block at +height+.
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func initializeBlockStore(db dbm.DB, state sm.State, valAddr []byte) *store.BlockStore {
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blockStore := store.NewBlockStore(db)
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for i := int64(1); i <= state.LastBlockHeight; i++ {
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lastCommit := makeCommit(i-1, valAddr)
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block, _ := state.MakeBlock(i, []types.Tx{}, lastCommit, nil,
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state.Validators.GetProposer().Address)
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const parts = 1
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partSet := block.MakePartSet(parts)
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seenCommit := makeCommit(i, valAddr)
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blockStore.SaveBlock(block, partSet, seenCommit)
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}
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return blockStore
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}
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func makeCommit(height int64, valAddr []byte) *types.Commit {
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commitSigs := []types.CommitSig{{
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BlockIDFlag: types.BlockIDFlagCommit,
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ValidatorAddress: valAddr,
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Timestamp: time.Now(),
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Signature: []byte("Signature"),
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}}
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return types.NewCommit(height, 0, types.BlockID{}, commitSigs)
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}
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func makeVote(height int64, round, index int32, addr bytes.HexBytes, blockID types.BlockID) *types.Vote {
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return &types.Vote{
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Type: tmproto.SignedMsgType(2),
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Height: height,
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Round: round,
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BlockID: blockID,
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Timestamp: time.Now(),
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ValidatorAddress: addr,
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ValidatorIndex: index,
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}
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}
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