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package types
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
crypto "github.com/tendermint/tendermint/crypto"
cmn "github.com/tendermint/tendermint/libs/common"
)
func TestValidateBlock(t *testing.T) {
txs := []Tx{Tx("foo"), Tx("bar")}
lastID := makeBlockIDRandom()
h := int64(3)
voteSet, _, vals := randVoteSet(h-1, 1, VoteTypePrecommit, 10, 1)
commit, err := MakeCommit(lastID, h-1, 1, voteSet, vals)
require.NoError(t, err)
block := MakeBlock(h, txs, commit)
require.NotNil(t, block)
// proper block must pass
err = block.ValidateBasic()
require.NoError(t, err)
// tamper with NumTxs
block = MakeBlock(h, txs, commit)
block.NumTxs++
err = block.ValidateBasic()
require.Error(t, err)
// remove 1/2 the commits
block = MakeBlock(h, txs, commit)
block.LastCommit.Precommits = commit.Precommits[:commit.Size()/2]
block.LastCommit.hash = nil // clear hash or change wont be noticed
err = block.ValidateBasic()
require.Error(t, err)
// tamper with LastCommitHash
block = MakeBlock(h, txs, commit)
block.LastCommitHash = []byte("something else")
err = block.ValidateBasic()
require.Error(t, err)
// tamper with data
block = MakeBlock(h, txs, commit)
block.Data.Txs[0] = Tx("something else")
block.Data.hash = nil // clear hash or change wont be noticed
err = block.ValidateBasic()
require.Error(t, err)
// tamper with DataHash
block = MakeBlock(h, txs, commit)
block.DataHash = cmn.RandBytes(len(block.DataHash))
err = block.ValidateBasic()
require.Error(t, err)
}
func makeBlockIDRandom() BlockID {
blockHash, blockPartsHeader := crypto.CRandBytes(32), PartSetHeader{123, crypto.CRandBytes(32)}
return BlockID{blockHash, blockPartsHeader}
}
func makeBlockID(hash string, partSetSize int, partSetHash string) BlockID {
return BlockID{
Hash: []byte(hash),
PartsHeader: PartSetHeader{
Total: partSetSize,
Hash: []byte(partSetHash),
},
}
}
var nilBytes []byte
func TestNilHeaderHashDoesntCrash(t *testing.T) {
assert.Equal(t, []byte((*Header)(nil).Hash()), nilBytes)
assert.Equal(t, []byte((new(Header)).Hash()), nilBytes)
}
func TestNilDataHashDoesntCrash(t *testing.T) {
assert.Equal(t, []byte((*Data)(nil).Hash()), nilBytes)
assert.Equal(t, []byte(new(Data).Hash()), nilBytes)
}