package state import ( "bytes" "fmt" "testing" "github.com/stretchr/testify/assert" abci "github.com/tendermint/abci/types" crypto "github.com/tendermint/go-crypto" cmn "github.com/tendermint/tmlibs/common" dbm "github.com/tendermint/tmlibs/db" "github.com/tendermint/tmlibs/log" 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_") stateDB := dbm.NewDB("state", config.DBBackend, config.DBDir()) state := GetState(stateDB, config.GenesisFile()) state.SetLogger(log.TestingLogger()) tearDown := func(t *testing.T) {} return tearDown, stateDB, state } func TestStateCopy(t *testing.T) { tearDown, _, state := setupTestCase(t) defer tearDown(t) assert := assert.New(t) stateCopy := state.Copy() assert.True(state.Equals(stateCopy), cmn.Fmt("expected state and its copy to be identical. got %v\n expected %v\n", stateCopy, state)) stateCopy.LastBlockHeight++ assert.False(state.Equals(stateCopy), cmn.Fmt("expected states to be different. got same %v", state)) } func TestStateSaveLoad(t *testing.T) { tearDown, stateDB, state := setupTestCase(t) defer tearDown(t) assert := assert.New(t) state.LastBlockHeight++ state.Save() loadedState := LoadState(stateDB) assert.True(state.Equals(loadedState), cmn.Fmt("expected state and its copy to be identical. got %v\n expected %v\n", loadedState, state)) } func TestABCIResponsesSaveLoad(t *testing.T) { tearDown, _, state := setupTestCase(t) defer tearDown(t) assert := assert.New(t) state.LastBlockHeight++ // build mock responses block := makeBlock(2, state) abciResponses := NewABCIResponses(block) abciResponses.DeliverTx[0] = &abci.ResponseDeliverTx{Data: []byte("foo")} abciResponses.DeliverTx[1] = &abci.ResponseDeliverTx{Data: []byte("bar"), Log: "ok"} abciResponses.EndBlock = abci.ResponseEndBlock{Diffs: []*abci.Validator{ { PubKey: crypto.GenPrivKeyEd25519().PubKey().Bytes(), Power: 10, }, }} abciResponses.txs = nil state.SaveABCIResponses(abciResponses) abciResponses2 := state.LoadABCIResponses() assert.Equal(abciResponses, abciResponses2, cmn.Fmt("ABCIResponses don't match: Got %v, Expected %v", abciResponses2, abciResponses)) } func TestValidatorSimpleSaveLoad(t *testing.T) { tearDown, _, state := setupTestCase(t) defer tearDown(t) assert := assert.New(t) // cant load anything for height 0 v, err := state.LoadValidators(0) assert.IsType(ErrNoValSetForHeight{}, err, "expected err at height 0") // should be able to load for height 1 v, err = state.LoadValidators(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++ state.saveValidatorsInfo() v, err = state.LoadValidators(state.LastBlockHeight + 1) 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 state.saveValidatorsInfo() v, err = state.LoadValidators(state.LastBlockHeight + 1) 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 = state.LoadValidators(state.LastBlockHeight + 2) assert.IsType(ErrNoValSetForHeight{}, err, "expected err at unknown height") } func TestValidatorChangesSaveLoad(t *testing.T) { tearDown, _, state := setupTestCase(t) defer tearDown(t) assert := assert.New(t) // change vals at these heights changeHeights := []int{1, 2, 4, 5, 10, 15, 16, 17, 20} N := len(changeHeights) // each valset is just one validator. // create list of them pubkeys := make([]crypto.PubKey, N+1) pubkeys[0] = state.GenesisDoc.Validators[0].PubKey for i := 1; i < N+1; i++ { pubkeys[i] = crypto.GenPrivKeyEd25519().PubKey() } // build the validator history by running SetBlockAndValidators // with the right validator set for each height highestHeight := changeHeights[N-1] + 5 changeIndex := 0 pubkey := pubkeys[changeIndex] for i := 1; i < highestHeight; i++ { // when we get to a change height, // use the next pubkey if changeIndex < len(changeHeights) && i == changeHeights[changeIndex] { changeIndex++ pubkey = pubkeys[changeIndex] } header, parts, responses := makeHeaderPartsResponses(state, i, pubkey) state.SetBlockAndValidators(header, parts, responses) state.saveValidatorsInfo() } // make all the test cases by using the same validator until after the change testCases := make([]valChangeTestCase, highestHeight) changeIndex = 0 pubkey = pubkeys[changeIndex] for i := 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++ pubkey = pubkeys[changeIndex] } testCases[i-1] = valChangeTestCase{i, pubkey} } for _, testCase := range testCases { v, err := state.LoadValidators(testCase.height) assert.Nil(err, fmt.Sprintf("expected no err at height %d", testCase.height)) assert.Equal(v.Size(), 1, "validator set size is greater than 1: %d", v.Size()) addr, _ := v.GetByIndex(0) assert.Equal(addr, testCase.vals.Address(), fmt.Sprintf("unexpected pubkey at height %d", testCase.height)) } } func makeHeaderPartsResponses(state *State, height int, pubkey crypto.PubKey) (*types.Header, types.PartSetHeader, *ABCIResponses) { block := makeBlock(height, state) _, val := state.Validators.GetByIndex(0) abciResponses := &ABCIResponses{ Height: height, } // if the pubkey is new, remove the old and add the new if !bytes.Equal(pubkey.Bytes(), val.PubKey.Bytes()) { abciResponses.EndBlock = abci.ResponseEndBlock{ Diffs: []*abci.Validator{ {val.PubKey.Bytes(), 0}, {pubkey.Bytes(), 10}, }, } } return block.Header, types.PartSetHeader{}, abciResponses } type valChangeTestCase struct { height int vals crypto.PubKey }