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package state
import (
"bytes"
"fmt"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/crypto"
"github.com/tendermint/tendermint/crypto/ed25519"
cmn "github.com/tendermint/tendermint/libs/common"
dbm "github.com/tendermint/tendermint/libs/db"
cfg "github.com/tendermint/tendermint/config"
"github.com/tendermint/tendermint/types"
)
// setupTestCase does setup common to all test cases.
func setupTestCase(t *testing.T) (func(t *testing.T), dbm.DB, State) {
config := cfg.ResetTestRoot("state_")
dbType := dbm.DBBackendType(config.DBBackend)
stateDB := dbm.NewDB("state", dbType, config.DBDir())
state, err := LoadStateFromDBOrGenesisFile(stateDB, config.GenesisFile())
assert.NoError(t, err, "expected no error on LoadStateFromDBOrGenesisFile")
tearDown := func(t *testing.T) {}
return tearDown, stateDB, state
}
// TestStateCopy tests the correct copying behaviour of State.
func TestStateCopy(t *testing.T) {
tearDown, _, state := setupTestCase(t)
defer tearDown(t)
// nolint: vetshadow
assert := assert.New(t)
stateCopy := state.Copy()
assert.True(state.Equals(stateCopy),
fmt.Sprintf("expected state and its copy to be identical.\ngot: %v\nexpected: %v\n",
stateCopy, state))
stateCopy.LastBlockHeight++
assert.False(state.Equals(stateCopy), fmt.Sprintf(`expected states to be different. got same
%v`, state))
}
//TestMakeGenesisStateNilValidators tests state's consistency when genesis file's validators field is nil.
func TestMakeGenesisStateNilValidators(t *testing.T) {
doc := types.GenesisDoc{
ChainID: "dummy",
Validators: nil,
}
require.Nil(t, doc.ValidateAndComplete())
state, err := MakeGenesisState(&doc)
require.Nil(t, err)
require.Equal(t, 0, len(state.Validators.Validators))
require.Equal(t, 0, len(state.NextValidators.Validators))
}
// TestStateSaveLoad tests saving and loading State from a db.
func TestStateSaveLoad(t *testing.T) {
tearDown, stateDB, state := setupTestCase(t)
defer tearDown(t)
// nolint: vetshadow
assert := assert.New(t)
state.LastBlockHeight++
SaveState(stateDB, state)
loadedState := LoadState(stateDB)
assert.True(state.Equals(loadedState),
fmt.Sprintf("expected state and its copy to be identical.\ngot: %v\nexpected: %v\n",
loadedState, state))
}
// TestABCIResponsesSaveLoad tests saving and loading ABCIResponses.
func TestABCIResponsesSaveLoad1(t *testing.T) {
tearDown, stateDB, state := setupTestCase(t)
defer tearDown(t)
// nolint: vetshadow
assert := assert.New(t)
state.LastBlockHeight++
// Build mock responses.
block := makeBlock(state, 2)
abciResponses := NewABCIResponses(block)
abciResponses.DeliverTx[0] = &abci.ResponseDeliverTx{Data: []byte("foo"), Tags: nil}
abciResponses.DeliverTx[1] = &abci.ResponseDeliverTx{Data: []byte("bar"), Log: "ok", Tags: nil}
abciResponses.EndBlock = &abci.ResponseEndBlock{ValidatorUpdates: []abci.ValidatorUpdate{
types.TM2PB.NewValidatorUpdate(ed25519.GenPrivKey().PubKey(), 10),
}}
saveABCIResponses(stateDB, block.Height, abciResponses)
loadedABCIResponses, err := LoadABCIResponses(stateDB, block.Height)
assert.Nil(err)
assert.Equal(abciResponses, loadedABCIResponses,
fmt.Sprintf("ABCIResponses don't match:\ngot: %v\nexpected: %v\n",
loadedABCIResponses, abciResponses))
}
// TestResultsSaveLoad tests saving and loading ABCI results.
func TestABCIResponsesSaveLoad2(t *testing.T) {
tearDown, stateDB, _ := setupTestCase(t)
defer tearDown(t)
// nolint: vetshadow
assert := assert.New(t)
cases := [...]struct {
// Height is implied to equal index+2,
// as block 1 is created from genesis.
added []*abci.ResponseDeliverTx
expected types.ABCIResults
}{
0: {
nil,
nil,
},
1: {
[]*abci.ResponseDeliverTx{
{Code: 32, Data: []byte("Hello"), Log: "Huh?"},
},
types.ABCIResults{
{32, []byte("Hello")},
}},
2: {
[]*abci.ResponseDeliverTx{
{Code: 383},
{Data: []byte("Gotcha!"),
Tags: []cmn.KVPair{
cmn.KVPair{Key: []byte("a"), Value: []byte("1")},
cmn.KVPair{Key: []byte("build"), Value: []byte("stuff")},
}},
},
types.ABCIResults{
{383, nil},
{0, []byte("Gotcha!")},
}},
3: {
nil,
nil,
},
}
// Query all before, this should return error.
for i := range cases {
h := int64(i + 1)
res, err := LoadABCIResponses(stateDB, h)
assert.Error(err, "%d: %#v", i, res)
}
// Add all cases.
for i, tc := range cases {
h := int64(i + 1) // last block height, one below what we save
responses := &ABCIResponses{
DeliverTx: tc.added,
EndBlock: &abci.ResponseEndBlock{},
}
saveABCIResponses(stateDB, h, responses)
}
// Query all before, should return expected value.
for i, tc := range cases {
h := int64(i + 1)
res, err := LoadABCIResponses(stateDB, h)
assert.NoError(err, "%d", i)
assert.Equal(tc.expected.Hash(), res.ResultsHash(), "%d", i)
}
}
// TestValidatorSimpleSaveLoad tests saving and loading validators.
func TestValidatorSimpleSaveLoad(t *testing.T) {
tearDown, stateDB, state := setupTestCase(t)
defer tearDown(t)
// nolint: vetshadow
assert := assert.New(t)
// Can't load anything for height 0.
v, err := LoadValidators(stateDB, 0)
assert.IsType(ErrNoValSetForHeight{}, err, "expected err at height 0")
// Should be able to load for height 1.
v, err = LoadValidators(stateDB, 1)
assert.Nil(err, "expected no err at height 1")
assert.Equal(v.Hash(), state.Validators.Hash(), "expected validator hashes to match")
// Should be able to load for height 2.
v, err = LoadValidators(stateDB, 2)
assert.Nil(err, "expected no err at height 2")
assert.Equal(v.Hash(), state.NextValidators.Hash(), "expected validator hashes to match")
// Increment height, save; should be able to load for next & next next height.
state.LastBlockHeight++
nextHeight := state.LastBlockHeight + 1
saveValidatorsInfo(stateDB, nextHeight+1, state.LastHeightValidatorsChanged, state.NextValidators)
vp0, err := LoadValidators(stateDB, nextHeight+0)
assert.Nil(err, "expected no err")
vp1, err := LoadValidators(stateDB, nextHeight+1)
assert.Nil(err, "expected no err")
assert.Equal(vp0.Hash(), state.Validators.Hash(), "expected validator hashes to match")
assert.Equal(vp1.Hash(), state.NextValidators.Hash(), "expected next validator hashes to match")
}
// TestValidatorChangesSaveLoad tests saving and loading a validator set with changes.
func TestOneValidatorChangesSaveLoad(t *testing.T) {
tearDown, stateDB, state := setupTestCase(t)
defer tearDown(t)
// Change vals at these heights.
changeHeights := []int64{1, 2, 4, 5, 10, 15, 16, 17, 20}
N := len(changeHeights)
// Build the validator history by running updateState
// with the right validator set for each height.
highestHeight := changeHeights[N-1] + 5
changeIndex := 0
_, val := state.Validators.GetByIndex(0)
power := val.VotingPower
var err error
var validatorUpdates []*types.Validator
for i := int64(1); i < highestHeight; i++ {
// When we get to a change height, use the next pubkey.
if changeIndex < len(changeHeights) && i == changeHeights[changeIndex] {
changeIndex++
power++
}
header, blockID, responses := makeHeaderPartsResponsesValPowerChange(state, i, power)
validatorUpdates, err = types.PB2TM.ValidatorUpdates(responses.EndBlock.ValidatorUpdates)
require.NoError(t, err)
state, err = updateState(state, blockID, &header, responses, validatorUpdates)
require.NoError(t, err)
nextHeight := state.LastBlockHeight + 1
saveValidatorsInfo(stateDB, nextHeight+1, state.LastHeightValidatorsChanged, state.NextValidators)
}
// On each height change, increment the power by one.
testCases := make([]int64, highestHeight)
changeIndex = 0
power = val.VotingPower
for i := int64(1); i < highestHeight+1; i++ {
// We get to the height after a change height use the next pubkey (note
// our counter starts at 0 this time).
if changeIndex < len(changeHeights) && i == changeHeights[changeIndex]+1 {
changeIndex++
power++
}
testCases[i-1] = power
}
for i, power := range testCases {
v, err := LoadValidators(stateDB, int64(i+1+1)) // +1 because vset changes delayed by 1 block.
assert.Nil(t, err, fmt.Sprintf("expected no err at height %d", i))
assert.Equal(t, v.Size(), 1, "validator set size is greater than 1: %d", v.Size())
_, val := v.GetByIndex(0)
assert.Equal(t, val.VotingPower, power, fmt.Sprintf(`unexpected powerat
height %d`, i))
}
}
func TestStoreLoadValidatorsIncrementsAccum(t *testing.T) {
const valSetSize = 2
tearDown, stateDB, state := setupTestCase(t)
state.Validators = genValSet(valSetSize)
state.NextValidators = state.Validators.CopyIncrementAccum(1)
SaveState(stateDB, state)
defer tearDown(t)
nextHeight := state.LastBlockHeight + 1
v0, err := LoadValidators(stateDB, nextHeight)
assert.Nil(t, err)
acc0 := v0.Validators[0].Accum
v1, err := LoadValidators(stateDB, nextHeight+1)
assert.Nil(t, err)
acc1 := v1.Validators[0].Accum
assert.NotEqual(t, acc1, acc0, "expected Accum value to change between heights")
}
// TestValidatorChangesSaveLoad tests saving and loading a validator set with
// changes.
func TestManyValidatorChangesSaveLoad(t *testing.T) {
const valSetSize = 7
tearDown, stateDB, state := setupTestCase(t)
require.Equal(t, int64(0), state.LastBlockHeight)
state.Validators = genValSet(valSetSize)
state.NextValidators = state.Validators.CopyIncrementAccum(1)
SaveState(stateDB, state)
defer tearDown(t)
_, valOld := state.Validators.GetByIndex(0)
var pubkeyOld = valOld.PubKey
pubkey := ed25519.GenPrivKey().PubKey()
const height = 1
// Swap the first validator with a new one (validator set size stays the same).
header, blockID, responses := makeHeaderPartsResponsesValPubKeyChange(state, height, pubkey)
// Save state etc.
var err error
var validatorUpdates []*types.Validator
validatorUpdates, err = types.PB2TM.ValidatorUpdates(responses.EndBlock.ValidatorUpdates)
require.NoError(t, err)
state, err = updateState(state, blockID, &header, responses, validatorUpdates)
require.Nil(t, err)
nextHeight := state.LastBlockHeight + 1
saveValidatorsInfo(stateDB, nextHeight+1, state.LastHeightValidatorsChanged, state.NextValidators)
// Load nextheight, it should be the oldpubkey.
v0, err := LoadValidators(stateDB, nextHeight)
assert.Nil(t, err)
assert.Equal(t, valSetSize, v0.Size())
index, val := v0.GetByAddress(pubkeyOld.Address())
assert.NotNil(t, val)
if index < 0 {
t.Fatal("expected to find old validator")
}
// Load nextheight+1, it should be the new pubkey.
v1, err := LoadValidators(stateDB, nextHeight+1)
assert.Nil(t, err)
assert.Equal(t, valSetSize, v1.Size())
index, val = v1.GetByAddress(pubkey.Address())
assert.NotNil(t, val)
if index < 0 {
t.Fatal("expected to find newly added validator")
}
}
func genValSet(size int) *types.ValidatorSet {
vals := make([]*types.Validator, size)
for i := 0; i < size; i++ {
vals[i] = types.NewValidator(ed25519.GenPrivKey().PubKey(), 10)
}
return types.NewValidatorSet(vals)
}
func TestStateMakeBlock(t *testing.T) {
tearDown, _, state := setupTestCase(t)
defer tearDown(t)
proposerAddress := state.Validators.GetProposer().Address
stateVersion := state.Version.Consensus
block := makeBlock(state, 2)
// test we set some fields
assert.Equal(t, stateVersion, block.Version)
assert.Equal(t, proposerAddress, block.ProposerAddress)
}
// TestConsensusParamsChangesSaveLoad tests saving and loading consensus params
// with changes.
func TestConsensusParamsChangesSaveLoad(t *testing.T) {
tearDown, stateDB, state := setupTestCase(t)
defer tearDown(t)
// Change vals at these heights.
changeHeights := []int64{1, 2, 4, 5, 10, 15, 16, 17, 20}
N := len(changeHeights)
// Each valset is just one validator.
// create list of them.
params := make([]types.ConsensusParams, N+1)
params[0] = state.ConsensusParams
for i := 1; i < N+1; i++ {
params[i] = *types.DefaultConsensusParams()
params[i].BlockSize.MaxBytes += int64(i)
}
// Build the params history by running updateState
// with the right params set for each height.
highestHeight := changeHeights[N-1] + 5
changeIndex := 0
cp := params[changeIndex]
var err error
var validatorUpdates []*types.Validator
for i := int64(1); i < highestHeight; i++ {
// When we get to a change height, use the next params.
if changeIndex < len(changeHeights) && i == changeHeights[changeIndex] {
changeIndex++
cp = params[changeIndex]
}
header, blockID, responses := makeHeaderPartsResponsesParams(state, i, cp)
validatorUpdates, err = types.PB2TM.ValidatorUpdates(responses.EndBlock.ValidatorUpdates)
require.NoError(t, err)
state, err = updateState(state, blockID, &header, responses, validatorUpdates)
require.Nil(t, err)
nextHeight := state.LastBlockHeight + 1
saveConsensusParamsInfo(stateDB, nextHeight, state.LastHeightConsensusParamsChanged, state.ConsensusParams)
}
// Make all the test cases by using the same params until after the change.
testCases := make([]paramsChangeTestCase, highestHeight)
changeIndex = 0
cp = params[changeIndex]
for i := int64(1); i < highestHeight+1; i++ {
// We get to the height after a change height use the next pubkey (note
// our counter starts at 0 this time).
if changeIndex < len(changeHeights) && i == changeHeights[changeIndex]+1 {
changeIndex++
cp = params[changeIndex]
}
testCases[i-1] = paramsChangeTestCase{i, cp}
}
for _, testCase := range testCases {
p, err := LoadConsensusParams(stateDB, testCase.height)
assert.Nil(t, err, fmt.Sprintf("expected no err at height %d", testCase.height))
assert.Equal(t, testCase.params, p, fmt.Sprintf(`unexpected consensus params at
height %d`, testCase.height))
}
}
func makeParams(blockBytes, blockGas, evidenceAge int64) types.ConsensusParams {
return types.ConsensusParams{
BlockSize: types.BlockSizeParams{
MaxBytes: blockBytes,
MaxGas: blockGas,
},
Evidence: types.EvidenceParams{
MaxAge: evidenceAge,
},
}
}
func pk() []byte {
return ed25519.GenPrivKey().PubKey().Bytes()
}
func TestApplyUpdates(t *testing.T) {
initParams := makeParams(1, 2, 3)
cases := [...]struct {
init types.ConsensusParams
updates abci.ConsensusParams
expected types.ConsensusParams
}{
0: {initParams, abci.ConsensusParams{}, initParams},
1: {initParams, abci.ConsensusParams{}, initParams},
2: {initParams,
abci.ConsensusParams{
BlockSize: &abci.BlockSizeParams{
MaxBytes: 44,
MaxGas: 55,
},
},
makeParams(44, 55, 3)},
3: {initParams,
abci.ConsensusParams{
Evidence: &abci.EvidenceParams{
MaxAge: 66,
},
},
makeParams(1, 2, 66)},
}
for i, tc := range cases {
res := tc.init.Update(&(tc.updates))
assert.Equal(t, tc.expected, res, "case %d", i)
}
}
func makeHeaderPartsResponsesValPubKeyChange(state State, height int64,
pubkey crypto.PubKey) (types.Header, types.BlockID, *ABCIResponses) {
block := makeBlock(state, state.LastBlockHeight+1)
abciResponses := &ABCIResponses{
EndBlock: &abci.ResponseEndBlock{ValidatorUpdates: nil},
}
// If the pubkey is new, remove the old and add the new.
_, val := state.NextValidators.GetByIndex(0)
if !bytes.Equal(pubkey.Bytes(), val.PubKey.Bytes()) {
abciResponses.EndBlock = &abci.ResponseEndBlock{
ValidatorUpdates: []abci.ValidatorUpdate{
types.TM2PB.NewValidatorUpdate(val.PubKey, 0),
types.TM2PB.NewValidatorUpdate(pubkey, 10),
},
}
}
return block.Header, types.BlockID{block.Hash(), types.PartSetHeader{}}, abciResponses
}
func makeHeaderPartsResponsesValPowerChange(state State, height int64,
power int64) (types.Header, types.BlockID, *ABCIResponses) {
block := makeBlock(state, state.LastBlockHeight+1)
abciResponses := &ABCIResponses{
EndBlock: &abci.ResponseEndBlock{ValidatorUpdates: nil},
}
// If the pubkey is new, remove the old and add the new.
_, val := state.NextValidators.GetByIndex(0)
if val.VotingPower != power {
abciResponses.EndBlock = &abci.ResponseEndBlock{
ValidatorUpdates: []abci.ValidatorUpdate{
types.TM2PB.NewValidatorUpdate(val.PubKey, power),
},
}
}
return block.Header, types.BlockID{block.Hash(), types.PartSetHeader{}}, abciResponses
}
func makeHeaderPartsResponsesParams(state State, height int64,
params types.ConsensusParams) (types.Header, types.BlockID, *ABCIResponses) {
block := makeBlock(state, state.LastBlockHeight+1)
abciResponses := &ABCIResponses{
EndBlock: &abci.ResponseEndBlock{ConsensusParamUpdates: types.TM2PB.ConsensusParams(&params)},
}
return block.Header, types.BlockID{block.Hash(), types.PartSetHeader{}}, abciResponses
}
type paramsChangeTestCase struct {
height int64
params types.ConsensusParams
}