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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"
)
func TestStateCopyEquals(t *testing.T) {
assert := assert.New(t)
config := cfg.ResetTestRoot("state_")
// Get State db
stateDB := dbm.NewDB("state", config.DBBackend, config.DBDir())
state := GetState(stateDB, config.GenesisFile())
state.SetLogger(log.TestingLogger())
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 += 1
assert.False(state.Equals(stateCopy), cmn.Fmt("expected states to be different. got same %v", state))
}
func TestStateSaveLoad(t *testing.T) {
assert := assert.New(t)
config := cfg.ResetTestRoot("state_")
// Get State db
stateDB := dbm.NewDB("state", config.DBBackend, config.DBDir())
state := GetState(stateDB, config.GenesisFile())
state.SetLogger(log.TestingLogger())
state.LastBlockHeight += 1
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) {
assert := assert.New(t)
config := cfg.ResetTestRoot("state_")
stateDB := dbm.NewDB("state", config.DBBackend, config.DBDir())
state := GetState(stateDB, config.GenesisFile())
state.SetLogger(log.TestingLogger())
state.LastBlockHeight += 1
// 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) {
assert := assert.New(t)
config := cfg.ResetTestRoot("state_")
// Get State db
stateDB := dbm.NewDB("state", config.DBBackend, config.DBDir())
state := GetState(stateDB, config.GenesisFile())
state.SetLogger(log.TestingLogger())
// 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 += 1
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) {
assert := assert.New(t)
config := cfg.ResetTestRoot("state_")
// Get State db
stateDB := dbm.NewDB("state", config.DBBackend, config.DBDir())
state := GetState(stateDB, config.GenesisFile())
state.SetLogger(log.TestingLogger())
// 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 += 1
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 += 1
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
}