81678971db
* trie: fix error in stacktrie not committing small roots * fuzzers: make trie-fuzzer use correct returnvalues * trie: improved tests * tests/fuzzers: fuzzer for stacktrie vs regular trie * test/fuzzers: make stacktrie fuzzer use 32-byte keys * trie: fix error in stacktrie with small nodes * trie: add (skipped) testcase for stacktrie * tests/fuzzers: address review comments for stacktrie fuzzer * trie: fix docs in stacktrie
292 lines
8.2 KiB
Go
292 lines
8.2 KiB
Go
package trie
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import (
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"bytes"
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"fmt"
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"math/big"
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mrand "math/rand"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/ethdb/memorydb"
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)
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func TestSizeBug(t *testing.T) {
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st := NewStackTrie(nil)
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nt, _ := New(common.Hash{}, NewDatabase(memorydb.New()))
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leaf := common.FromHex("290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563")
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value := common.FromHex("94cf40d0d2b44f2b66e07cace1372ca42b73cf21a3")
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nt.TryUpdate(leaf, value)
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st.TryUpdate(leaf, value)
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if nt.Hash() != st.Hash() {
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t.Fatalf("error %x != %x", st.Hash(), nt.Hash())
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}
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}
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func TestEmptyBug(t *testing.T) {
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st := NewStackTrie(nil)
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nt, _ := New(common.Hash{}, NewDatabase(memorydb.New()))
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//leaf := common.FromHex("290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563")
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//value := common.FromHex("94cf40d0d2b44f2b66e07cace1372ca42b73cf21a3")
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kvs := []struct {
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K string
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V string
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}{
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{K: "405787fa12a823e0f2b7631cc41b3ba8828b3321ca811111fa75cd3aa3bb5ace", V: "9496f4ec2bf9dab484cac6be589e8417d84781be08"},
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{K: "40edb63a35fcf86c08022722aa3287cdd36440d671b4918131b2514795fefa9c", V: "01"},
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{K: "b10e2d527612073b26eecdfd717e6a320cf44b4afac2b0732d9fcbe2b7fa0cf6", V: "947a30f7736e48d6599356464ba4c150d8da0302ff"},
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{K: "c2575a0e9e593c00f959f8c92f12db2869c3395a3b0502d05e2516446f71f85b", V: "02"},
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}
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for _, kv := range kvs {
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nt.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
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st.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
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}
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if nt.Hash() != st.Hash() {
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t.Fatalf("error %x != %x", st.Hash(), nt.Hash())
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}
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}
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func TestValLength56(t *testing.T) {
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st := NewStackTrie(nil)
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nt, _ := New(common.Hash{}, NewDatabase(memorydb.New()))
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//leaf := common.FromHex("290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563")
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//value := common.FromHex("94cf40d0d2b44f2b66e07cace1372ca42b73cf21a3")
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kvs := []struct {
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K string
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V string
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}{
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{K: "405787fa12a823e0f2b7631cc41b3ba8828b3321ca811111fa75cd3aa3bb5ace", V: "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"},
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}
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for _, kv := range kvs {
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nt.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
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st.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
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}
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if nt.Hash() != st.Hash() {
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t.Fatalf("error %x != %x", st.Hash(), nt.Hash())
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}
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}
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func genTxs(num uint64) (types.Transactions, error) {
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key, err := crypto.HexToECDSA("deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef")
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if err != nil {
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return nil, err
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}
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var addr = crypto.PubkeyToAddress(key.PublicKey)
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newTx := func(i uint64) (*types.Transaction, error) {
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signer := types.NewEIP155Signer(big.NewInt(18))
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tx, err := types.SignTx(types.NewTransaction(i, addr, new(big.Int), 0, new(big.Int).SetUint64(10000000), nil), signer, key)
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return tx, err
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}
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var txs types.Transactions
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for i := uint64(0); i < num; i++ {
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tx, err := newTx(i)
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if err != nil {
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return nil, err
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}
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txs = append(txs, tx)
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}
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return txs, nil
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}
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func TestDeriveSha(t *testing.T) {
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txs, err := genTxs(0)
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if err != nil {
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t.Fatal(err)
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}
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for len(txs) < 1000 {
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exp := types.DeriveSha(txs, newEmpty())
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got := types.DeriveSha(txs, NewStackTrie(nil))
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if !bytes.Equal(got[:], exp[:]) {
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t.Fatalf("%d txs: got %x exp %x", len(txs), got, exp)
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}
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newTxs, err := genTxs(uint64(len(txs) + 1))
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if err != nil {
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t.Fatal(err)
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}
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txs = append(txs, newTxs...)
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}
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}
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func BenchmarkDeriveSha200(b *testing.B) {
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txs, err := genTxs(200)
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if err != nil {
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b.Fatal(err)
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}
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var exp common.Hash
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var got common.Hash
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b.Run("std_trie", func(b *testing.B) {
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b.ResetTimer()
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b.ReportAllocs()
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for i := 0; i < b.N; i++ {
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exp = types.DeriveSha(txs, newEmpty())
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}
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})
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b.Run("stack_trie", func(b *testing.B) {
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b.ResetTimer()
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b.ReportAllocs()
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for i := 0; i < b.N; i++ {
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got = types.DeriveSha(txs, NewStackTrie(nil))
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}
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})
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if got != exp {
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b.Errorf("got %x exp %x", got, exp)
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}
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}
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type dummyDerivableList struct {
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len int
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seed int
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}
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func newDummy(seed int) *dummyDerivableList {
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d := &dummyDerivableList{}
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src := mrand.NewSource(int64(seed))
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// don't use lists longer than 4K items
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d.len = int(src.Int63() & 0x0FFF)
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d.seed = seed
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return d
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}
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func (d *dummyDerivableList) Len() int {
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return d.len
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}
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func (d *dummyDerivableList) GetRlp(i int) []byte {
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src := mrand.NewSource(int64(d.seed + i))
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// max item size 256, at least 1 byte per item
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size := 1 + src.Int63()&0x00FF
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data := make([]byte, size)
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_, err := mrand.New(src).Read(data)
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if err != nil {
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panic(err)
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}
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return data
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}
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func printList(l types.DerivableList) {
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fmt.Printf("list length: %d\n", l.Len())
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fmt.Printf("{\n")
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for i := 0; i < l.Len(); i++ {
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v := l.GetRlp(i)
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fmt.Printf("\"0x%x\",\n", v)
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}
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fmt.Printf("},\n")
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}
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func TestFuzzDeriveSha(t *testing.T) {
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// increase this for longer runs -- it's set to quite low for travis
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rndSeed := mrand.Int()
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for i := 0; i < 10; i++ {
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seed := rndSeed + i
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exp := types.DeriveSha(newDummy(i), newEmpty())
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got := types.DeriveSha(newDummy(i), NewStackTrie(nil))
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if !bytes.Equal(got[:], exp[:]) {
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printList(newDummy(seed))
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t.Fatalf("seed %d: got %x exp %x", seed, got, exp)
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}
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}
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}
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type flatList struct {
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rlpvals []string
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}
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func newFlatList(rlpvals []string) *flatList {
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return &flatList{rlpvals}
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}
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func (f *flatList) Len() int {
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return len(f.rlpvals)
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}
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func (f *flatList) GetRlp(i int) []byte {
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return hexutil.MustDecode(f.rlpvals[i])
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}
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// TestDerivableList contains testcases found via fuzzing
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func TestDerivableList(t *testing.T) {
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type tcase []string
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tcs := []tcase{
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{
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"0xc041",
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},
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{
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"0xf04cf757812428b0763112efb33b6f4fad7deb445e",
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"0xf04cf757812428b0763112efb33b6f4fad7deb445e",
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},
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{
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"0xca410605310cdc3bb8d4977ae4f0143df54a724ed873457e2272f39d66e0460e971d9d",
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"0x6cd850eca0a7ac46bb1748d7b9cb88aa3bd21c57d852c28198ad8fa422c4595032e88a4494b4778b36b944fe47a52b8c5cd312910139dfcb4147ab8e972cc456bcb063f25dd78f54c4d34679e03142c42c662af52947d45bdb6e555751334ace76a5080ab5a0256a1d259855dfc5c0b8023b25befbb13fd3684f9f755cbd3d63544c78ee2001452dd54633a7593ade0b183891a0a4e9c7844e1254005fbe592b1b89149a502c24b6e1dca44c158aebedf01beae9c30cabe16a",
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"0x14abd5c47c0be87b0454596baad2",
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"0xca410605310cdc3bb8d4977ae4f0143df54a724ed873457e2272f39d66e0460e971d9d",
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},
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}
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for i, tc := range tcs[1:] {
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exp := types.DeriveSha(newFlatList(tc), newEmpty())
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got := types.DeriveSha(newFlatList(tc), NewStackTrie(nil))
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if !bytes.Equal(got[:], exp[:]) {
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t.Fatalf("case %d: got %x exp %x", i, got, exp)
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}
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}
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}
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// TestUpdateSmallNodes tests a case where the leaves are small (both key and value),
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// which causes a lot of node-within-node. This case was found via fuzzing.
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func TestUpdateSmallNodes(t *testing.T) {
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st := NewStackTrie(nil)
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nt, _ := New(common.Hash{}, NewDatabase(memorydb.New()))
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kvs := []struct {
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K string
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V string
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}{
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{"63303030", "3041"}, // stacktrie.Update
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{"65", "3000"}, // stacktrie.Update
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}
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for _, kv := range kvs {
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nt.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
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st.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
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}
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if nt.Hash() != st.Hash() {
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t.Fatalf("error %x != %x", st.Hash(), nt.Hash())
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}
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}
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// TestUpdateVariableKeys contains a case which stacktrie fails: when keys of different
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// sizes are used, and the second one has the same prefix as the first, then the
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// stacktrie fails, since it's unable to 'expand' on an already added leaf.
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// For all practical purposes, this is fine, since keys are fixed-size length
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// in account and storage tries.
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//
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// The test is marked as 'skipped', and exists just to have the behaviour documented.
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// This case was found via fuzzing.
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func TestUpdateVariableKeys(t *testing.T) {
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t.SkipNow()
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st := NewStackTrie(nil)
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nt, _ := New(common.Hash{}, NewDatabase(memorydb.New()))
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kvs := []struct {
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K string
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V string
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}{
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{"0x33303534636532393561313031676174", "303030"},
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{"0x3330353463653239356131303167617430", "313131"},
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}
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for _, kv := range kvs {
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nt.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
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st.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
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}
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if nt.Hash() != st.Hash() {
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t.Fatalf("error %x != %x", st.Hash(), nt.Hash())
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}
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}
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