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(¶ms)}, } 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 }