package evidence
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import (
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"os"
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"sync"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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dbm "github.com/tendermint/tm-db"
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sm "github.com/tendermint/tendermint/state"
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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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types.RegisterMockEvidences(cdc)
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code := m.Run()
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os.Exit(code)
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}
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func initializeValidatorState(valAddr []byte, height int64) dbm.DB {
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stateDB := dbm.NewMemDB()
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// create validator set and state
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valSet := &types.ValidatorSet{
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Validators: []*types.Validator{
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{Address: valAddr},
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},
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}
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state := sm.State{
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LastBlockHeight: 0,
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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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LastHeightValidatorsChanged: 1,
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ConsensusParams: types.ConsensusParams{
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Evidence: types.EvidenceParams{
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MaxAgeNumBlocks: 10000,
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MaxAgeDuration: 48 * time.Hour,
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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 TestEvidencePool(t *testing.T) {
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var (
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valAddr = []byte("val1")
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height = int64(5)
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stateDB = initializeValidatorState(valAddr, height)
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evidenceDB = dbm.NewMemDB()
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pool = NewPool(stateDB, evidenceDB)
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evidenceTime = time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
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)
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goodEvidence := types.NewMockEvidence(height, time.Now(), 0, valAddr)
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badEvidence := types.NewMockEvidence(height, evidenceTime, 0, valAddr)
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// bad evidence
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err := pool.AddEvidence(badEvidence)
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assert.NotNil(t, err)
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// err: evidence created at 2019-01-01 00:00:00 +0000 UTC has expired. Evidence can not be older than: ...
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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<-pool.EvidenceWaitChan()
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wg.Done()
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}()
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err = pool.AddEvidence(goodEvidence)
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assert.Nil(t, err)
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wg.Wait()
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assert.Equal(t, 1, pool.evidenceList.Len())
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// if we send it again, it shouldnt change the size
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err = pool.AddEvidence(goodEvidence)
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assert.Nil(t, err)
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assert.Equal(t, 1, pool.evidenceList.Len())
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}
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func TestEvidencePoolIsCommitted(t *testing.T) {
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// Initialization:
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var (
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valAddr = []byte("validator_address")
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height = int64(42)
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lastBlockTime = time.Now()
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stateDB = initializeValidatorState(valAddr, height)
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evidenceDB = dbm.NewMemDB()
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pool = NewPool(stateDB, evidenceDB)
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)
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// evidence not seen yet:
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evidence := types.NewMockEvidence(height, time.Now(), 0, 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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// evidence seen and committed:
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pool.MarkEvidenceAsCommitted(height, lastBlockTime, []types.Evidence{evidence})
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assert.True(t, pool.IsCommitted(evidence))
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}
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func TestAddEvidence(t *testing.T) {
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var (
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valAddr = []byte("val1")
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height = int64(100002)
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stateDB = initializeValidatorState(valAddr, height)
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evidenceDB = dbm.NewMemDB()
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pool = NewPool(stateDB, evidenceDB)
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evidenceTime = time.Date(2019, 1, 1, 0, 0, 0, 0, time.UTC)
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)
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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, true, "evidence created at 2019-01-01 00:00:00 +0000 UTC has expired"},
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{int64(1), time.Now(), true, "evidence from height 1 is too old"},
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{int64(1), evidenceTime, true,
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"evidence from height 1 is too old & evidence created at 2019-01-01 00:00:00 +0000 UTC has expired"},
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}
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for _, tc := range testCases {
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tc := tc
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ev := types.NewMockEvidence(tc.evHeight, tc.evTime, 0, 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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}
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}
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}
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