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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"
crypto "github.com/tendermint/tendermint/crypto"
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),
cmn.Fmt("expected state and its copy to be identical.\ngot: %v\nexpected: %v\n",
stateCopy, state))
stateCopy.LastBlockHeight++
assert.False(state.Equals(stateCopy), cmn.Fmt(`expected states to be different. got same
%v`, state))
}
// 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),
cmn.Fmt("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.Validator{
types.TM2PB.ValidatorFromPubKeyAndPower(crypto.GenPrivKeyEd25519().PubKey(), 10),
}}
saveABCIResponses(stateDB, block.Height, abciResponses)
loadedABCIResponses, err := LoadABCIResponses(stateDB, block.Height)
assert.Nil(err)
assert.Equal(abciResponses, loadedABCIResponses,
cmn.Fmt("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 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{[]byte("a"), []byte("1")},
cmn.KVPair{[]byte("build"), []byte("stuff")},
}},
},
types.ABCIResults{
{383, nil},
{0, []byte("Gotcha!")},
}},
3: {
nil,
nil,
},
}
// query all before, 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")
// increment height, save; should be able to load for next height
state.LastBlockHeight++
nextHeight := state.LastBlockHeight + 1
saveValidatorsInfo(stateDB, nextHeight, state.LastHeightValidatorsChanged, state.Validators)
v, err = LoadValidators(stateDB, nextHeight)
assert.Nil(err, "expected no err")
assert.Equal(v.Hash(), state.Validators.Hash(), "expected validator hashes to match")
// increment height, save; should be able to load for next height
state.LastBlockHeight += 10
nextHeight = state.LastBlockHeight + 1
saveValidatorsInfo(stateDB, nextHeight, state.LastHeightValidatorsChanged, state.Validators)
v, err = LoadValidators(stateDB, nextHeight)
assert.Nil(err, "expected no err")
assert.Equal(v.Hash(), state.Validators.Hash(), "expected validator hashes to match")
// should be able to load for next next height
_, err = LoadValidators(stateDB, state.LastBlockHeight+2)
assert.IsType(ErrNoValSetForHeight{}, err, "expected err at unknown height")
}
// 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
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)
state, err = updateState(state, blockID, header, responses)
assert.Nil(t, err)
nextHeight := state.LastBlockHeight + 1
saveValidatorsInfo(stateDB, nextHeight, state.LastHeightValidatorsChanged, state.Validators)
}
// on each change height, increment the power by one.
testCases := make([]int64, highestHeight)
changeIndex = 0
power = val.VotingPower
for i := int64(1); i < highestHeight+1; i++ {
// we 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))
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))
}
}
// TestValidatorChangesSaveLoad tests saving and loading a validator set with
// changes.
func TestManyValidatorChangesSaveLoad(t *testing.T) {
const valSetSize = 7
tearDown, stateDB, state := setupTestCase(t)
state.Validators = genValSet(valSetSize)
SaveState(stateDB, state)
defer tearDown(t)
const height = 1
pubkey := crypto.GenPrivKeyEd25519().PubKey()
// swap the first validator with a new one ^^^ (validator set size stays the same)
header, blockID, responses := makeHeaderPartsResponsesValPubKeyChange(state, height, pubkey)
var err error
state, err = updateState(state, blockID, header, responses)
require.Nil(t, err)
nextHeight := state.LastBlockHeight + 1
saveValidatorsInfo(stateDB, nextHeight, state.LastHeightValidatorsChanged, state.Validators)
v, err := LoadValidators(stateDB, height+1)
assert.Nil(t, err)
assert.Equal(t, valSetSize, v.Size())
index, val := v.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(crypto.GenPrivKeyEd25519().PubKey(), 10)
}
return types.NewValidatorSet(vals)
}
// 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 += 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
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)
state, err = updateState(state, blockID, header, responses)
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 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, blockTx, blockGas, txBytes,
txGas, partSize int) types.ConsensusParams {
return types.ConsensusParams{
BlockSize: types.BlockSize{
MaxBytes: blockBytes,
MaxTxs: blockTx,
MaxGas: int64(blockGas),
},
TxSize: types.TxSize{
MaxBytes: txBytes,
MaxGas: int64(txGas),
},
BlockGossip: types.BlockGossip{
BlockPartSizeBytes: partSize,
},
}
}
func pk() []byte {
return crypto.GenPrivKeyEd25519().PubKey().Bytes()
}
func TestApplyUpdates(t *testing.T) {
initParams := makeParams(1, 2, 3, 4, 5, 6)
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{
TxSize: &abci.TxSize{
MaxBytes: 123,
},
},
makeParams(1, 2, 3, 123, 5, 6)},
3: {initParams,
abci.ConsensusParams{
BlockSize: &abci.BlockSize{
MaxTxs: 44,
MaxGas: 55,
},
},
makeParams(1, 44, 55, 4, 5, 6)},
4: {initParams,
abci.ConsensusParams{
BlockSize: &abci.BlockSize{
MaxTxs: 789,
},
TxSize: &abci.TxSize{
MaxGas: 888,
},
BlockGossip: &abci.BlockGossip{
BlockPartSizeBytes: 2002,
},
},
makeParams(1, 789, 3, 4, 888, 2002)},
}
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, height)
abciResponses := &ABCIResponses{
EndBlock: &abci.ResponseEndBlock{ValidatorUpdates: nil},
}
// if the pubkey is new, remove the old and add the new
_, val := state.Validators.GetByIndex(0)
if !bytes.Equal(pubkey.Bytes(), val.PubKey.Bytes()) {
abciResponses.EndBlock = &abci.ResponseEndBlock{
ValidatorUpdates: []abci.Validator{
types.TM2PB.ValidatorFromPubKeyAndPower(val.PubKey, 0),
types.TM2PB.ValidatorFromPubKeyAndPower(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, height)
abciResponses := &ABCIResponses{
EndBlock: &abci.ResponseEndBlock{ValidatorUpdates: nil},
}
// if the pubkey is new, remove the old and add the new
_, val := state.Validators.GetByIndex(0)
if val.VotingPower != power {
abciResponses.EndBlock = &abci.ResponseEndBlock{
ValidatorUpdates: []abci.Validator{
types.TM2PB.ValidatorFromPubKeyAndPower(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, height)
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
}
func makeHeaderPartsResults(state State, height int64,
results []*abci.ResponseDeliverTx) (*types.Header, types.BlockID, *ABCIResponses) {
block := makeBlock(state, height)
abciResponses := &ABCIResponses{
DeliverTx: results,
EndBlock: &abci.ResponseEndBlock{},
}
return block.Header, types.BlockID{block.Hash(), types.PartSetHeader{}}, abciResponses
}