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