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328 lines
9.7 KiB
328 lines
9.7 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/mock"
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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/evidence/mocks"
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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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)
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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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var defaultEvidenceTime = time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
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func TestEvidencePoolBasic(t *testing.T) {
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var (
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val = types.NewMockPV()
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height = int64(1)
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stateStore = initializeValidatorState(val, height)
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evidenceDB = dbm.NewMemDB()
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blockStore = &mocks.BlockStore{}
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)
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blockStore.On("LoadBlockMeta", mock.AnythingOfType("int64")).Return(
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&types.BlockMeta{Header: types.Header{Time: defaultEvidenceTime}},
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)
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pool, err := NewPool(evidenceDB, stateStore, blockStore)
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require.NoError(t, err)
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// evidence not seen yet:
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evidence := types.NewMockDuplicateVoteEvidenceWithValidator(height, defaultEvidenceTime, val, evidenceChainID)
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assert.False(t, pool.IsCommitted(evidence))
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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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// evidence seen but not yet committed:
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assert.NoError(t, pool.AddEvidence(evidence))
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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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assert.False(t, pool.IsCommitted(evidence))
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assert.True(t, pool.IsPending(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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proposedEvidence = pool.PendingEvidence(1)
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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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// no evidence should be pending
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proposedEvidence = pool.PendingEvidence(1)
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assert.Empty(t, proposedEvidence)
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}
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// Tests inbound evidence for the right time and height
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func TestAddExpiredEvidence(t *testing.T) {
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var (
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val = types.NewMockPV()
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height = int64(30)
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stateStore = initializeValidatorState(val, height)
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evidenceDB = dbm.NewMemDB()
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blockStore = &mocks.BlockStore{}
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expiredEvidenceTime = time.Date(2018, 1, 1, 0, 0, 0, 0, time.UTC)
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expiredHeight = int64(2)
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)
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blockStore.On("LoadBlockMeta", mock.AnythingOfType("int64")).Return(func(h int64) *types.BlockMeta {
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if h == height || h == expiredHeight {
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return &types.BlockMeta{Header: types.Header{Time: defaultEvidenceTime}}
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}
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return &types.BlockMeta{Header: types.Header{Time: expiredEvidenceTime}}
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})
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pool, err := NewPool(evidenceDB, stateStore, 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, defaultEvidenceTime, false, "valid evidence"},
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{expiredHeight, defaultEvidenceTime, false, "valid evidence (despite old height)"},
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{height - 1, expiredEvidenceTime, false, "valid evidence (despite old time)"},
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{expiredHeight - 1, expiredEvidenceTime, 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.NewMockDuplicateVoteEvidenceWithValidator(tc.evHeight, tc.evTime, val, evidenceChainID)
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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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} else {
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assert.NoError(t, 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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height := int64(21)
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pool, val := defaultTestPool(height)
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state := pool.State()
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// create new block (no need to save it to blockStore)
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evidence := types.NewMockDuplicateVoteEvidence(height, time.Now(), evidenceChainID)
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lastCommit := makeCommit(height, val.PrivKey.PubKey().Address())
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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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}
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func TestVerifyEvidenceCommittedEvidenceFails(t *testing.T) {
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height := int64(1)
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pool, _ := defaultTestPool(height)
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committedEvidence := types.NewMockDuplicateVoteEvidence(height, time.Now(), evidenceChainID)
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pool.MarkEvidenceAsCommitted(height, []types.Evidence{committedEvidence})
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err := pool.Verify(committedEvidence)
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if assert.Error(t, err) {
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assert.Equal(t, "evidence was already committed", err.Error())
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}
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}
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func TestVeriyEvidencePendingEvidencePasses(t *testing.T) {
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var (
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val = types.NewMockPV()
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height = int64(1)
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stateStore = initializeValidatorState(val, height)
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blockStore = &mocks.BlockStore{}
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)
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blockStore.On("LoadBlockMeta", mock.AnythingOfType("int64")).Return(
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&types.BlockMeta{Header: types.Header{Time: defaultEvidenceTime}},
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)
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pool, err := NewPool(dbm.NewMemDB(), stateStore, blockStore)
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require.NoError(t, err)
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evidence := types.NewMockDuplicateVoteEvidenceWithValidator(height, defaultEvidenceTime, val, evidenceChainID)
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err = pool.AddEvidence(evidence)
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require.NoError(t, err)
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err = pool.Verify(evidence)
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assert.NoError(t, err)
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}
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func TestRecoverPendingEvidence(t *testing.T) {
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var (
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val = types.NewMockPV()
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valAddr = val.PrivKey.PubKey().Address()
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height = int64(30)
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stateStore = initializeValidatorState(val, height)
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evidenceDB = dbm.NewMemDB()
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blockStoreDB = dbm.NewMemDB()
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expiredEvidenceTime = time.Date(2018, 1, 1, 0, 0, 0, 0, time.UTC)
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goodEvidence = types.NewMockDuplicateVoteEvidenceWithValidator(height,
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defaultEvidenceTime, val, evidenceChainID)
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expiredEvidence = types.NewMockDuplicateVoteEvidenceWithValidator(int64(1),
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expiredEvidenceTime, val, evidenceChainID)
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)
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state, err := stateStore.Load()
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require.NoError(t, err)
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blockStore := initializeBlockStore(blockStoreDB, state, valAddr)
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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(evidenceDB, stateStore, 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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assert.False(t, pool.Has(expiredEvidence))
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}
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func initializeStateFromValidatorSet(valSet *types.ValidatorSet, height int64) sm.Store {
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stateDB := dbm.NewMemDB()
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stateStore := sm.NewStore(stateDB)
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state := sm.State{
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ChainID: evidenceChainID,
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InitialHeight: 1,
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LastBlockHeight: height,
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LastBlockTime: defaultEvidenceTime,
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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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},
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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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if err := stateStore.Save(state); err != nil {
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panic(err)
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}
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}
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return stateStore
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}
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func initializeValidatorState(privVal types.PrivValidator, height int64) sm.Store {
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pubKey, _ := privVal.GetPubKey()
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validator := &types.Validator{Address: pubKey.Address(), 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 defaultTestPool(height int64) (*Pool, types.MockPV) {
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val := types.NewMockPV()
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valAddress := val.PrivKey.PubKey().Address()
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evidenceDB := dbm.NewMemDB()
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stateStore := initializeValidatorState(val, height)
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state, _ := stateStore.Load()
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blockStore := initializeBlockStore(dbm.NewMemDB(), state, valAddress)
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pool, err := NewPool(evidenceDB, stateStore, blockStore)
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if err != nil {
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panic("test evidence pool could not be created")
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}
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return pool, val
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}
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