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