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package trie
import (
"bytes"
"math/big"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethdb/memorydb"
)
func TestSizeBug(t *testing.T) {
st := NewStackTrie(nil)
nt, _ := New(common.Hash{}, NewDatabase(memorydb.New()))
leaf := common.FromHex("290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563")
value := common.FromHex("94cf40d0d2b44f2b66e07cace1372ca42b73cf21a3")
nt.TryUpdate(leaf, value)
st.TryUpdate(leaf, value)
if nt.Hash() != st.Hash() {
t.Fatalf("error %x != %x", st.Hash(), nt.Hash())
}
}
func TestEmptyBug(t *testing.T) {
st := NewStackTrie(nil)
nt, _ := New(common.Hash{}, NewDatabase(memorydb.New()))
//leaf := common.FromHex("290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563")
//value := common.FromHex("94cf40d0d2b44f2b66e07cace1372ca42b73cf21a3")
kvs := []struct {
K string
V string
}{
{K: "405787fa12a823e0f2b7631cc41b3ba8828b3321ca811111fa75cd3aa3bb5ace", V: "9496f4ec2bf9dab484cac6be589e8417d84781be08"},
{K: "40edb63a35fcf86c08022722aa3287cdd36440d671b4918131b2514795fefa9c", V: "01"},
{K: "b10e2d527612073b26eecdfd717e6a320cf44b4afac2b0732d9fcbe2b7fa0cf6", V: "947a30f7736e48d6599356464ba4c150d8da0302ff"},
{K: "c2575a0e9e593c00f959f8c92f12db2869c3395a3b0502d05e2516446f71f85b", V: "02"},
}
for _, kv := range kvs {
nt.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
st.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
}
if nt.Hash() != st.Hash() {
t.Fatalf("error %x != %x", st.Hash(), nt.Hash())
}
}
func TestValLength56(t *testing.T) {
st := NewStackTrie(nil)
nt, _ := New(common.Hash{}, NewDatabase(memorydb.New()))
//leaf := common.FromHex("290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563")
//value := common.FromHex("94cf40d0d2b44f2b66e07cace1372ca42b73cf21a3")
kvs := []struct {
K string
V string
}{
{K: "405787fa12a823e0f2b7631cc41b3ba8828b3321ca811111fa75cd3aa3bb5ace", V: "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"},
}
for _, kv := range kvs {
nt.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
st.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
}
if nt.Hash() != st.Hash() {
t.Fatalf("error %x != %x", st.Hash(), nt.Hash())
}
}
// TestUpdateSmallNodes tests a case where the leaves are small (both key and value),
// which causes a lot of node-within-node. This case was found via fuzzing.
func TestUpdateSmallNodes(t *testing.T) {
st := NewStackTrie(nil)
nt, _ := New(common.Hash{}, NewDatabase(memorydb.New()))
kvs := []struct {
K string
V string
}{
{"63303030", "3041"}, // stacktrie.Update
{"65", "3000"}, // stacktrie.Update
}
for _, kv := range kvs {
nt.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
st.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
}
if nt.Hash() != st.Hash() {
t.Fatalf("error %x != %x", st.Hash(), nt.Hash())
}
}
// TestUpdateVariableKeys contains a case which stacktrie fails: when keys of different
// sizes are used, and the second one has the same prefix as the first, then the
// stacktrie fails, since it's unable to 'expand' on an already added leaf.
// For all practical purposes, this is fine, since keys are fixed-size length
// in account and storage tries.
//
// The test is marked as 'skipped', and exists just to have the behaviour documented.
// This case was found via fuzzing.
func TestUpdateVariableKeys(t *testing.T) {
t.SkipNow()
st := NewStackTrie(nil)
nt, _ := New(common.Hash{}, NewDatabase(memorydb.New()))
kvs := []struct {
K string
V string
}{
{"0x33303534636532393561313031676174", "303030"},
{"0x3330353463653239356131303167617430", "313131"},
}
for _, kv := range kvs {
nt.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
st.TryUpdate(common.FromHex(kv.K), common.FromHex(kv.V))
}
if nt.Hash() != st.Hash() {
t.Fatalf("error %x != %x", st.Hash(), nt.Hash())
}
}
// TestStacktrieNotModifyValues checks that inserting blobs of data into the
// stacktrie does not mutate the blobs
func TestStacktrieNotModifyValues(t *testing.T) {
st := NewStackTrie(nil)
{ // Test a very small trie
// Give it the value as a slice with large backing alloc,
// so if the stacktrie tries to append, it won't have to realloc
value := make([]byte, 1, 100)
value[0] = 0x2
want := common.CopyBytes(value)
st.TryUpdate([]byte{0x01}, value)
st.Hash()
if have := value; !bytes.Equal(have, want) {
t.Fatalf("tiny trie: have %#x want %#x", have, want)
}
st = NewStackTrie(nil)
}
// Test with a larger trie
keyB := big.NewInt(1)
keyDelta := big.NewInt(1)
var vals [][]byte
getValue := func(i int) []byte {
if i%2 == 0 { // large
return crypto.Keccak256(big.NewInt(int64(i)).Bytes())
} else { //small
return big.NewInt(int64(i)).Bytes()
}
}
for i := 0; i < 1000; i++ {
key := common.BigToHash(keyB)
value := getValue(i)
st.TryUpdate(key.Bytes(), value)
vals = append(vals, value)
keyB = keyB.Add(keyB, keyDelta)
keyDelta.Add(keyDelta, common.Big1)
}
st.Hash()
for i := 0; i < 1000; i++ {
want := getValue(i)
have := vals[i]
if !bytes.Equal(have, want) {
t.Fatalf("item %d, have %#x want %#x", i, have, want)
}
}
}
// TestStacktrieSerialization tests that the stacktrie works well if we
// serialize/unserialize it a lot
func TestStacktrieSerialization(t *testing.T) {
var (
st = NewStackTrie(nil)
nt, _ = New(common.Hash{}, NewDatabase(memorydb.New()))
keyB = big.NewInt(1)
keyDelta = big.NewInt(1)
vals [][]byte
keys [][]byte
)
getValue := func(i int) []byte {
if i%2 == 0 { // large
return crypto.Keccak256(big.NewInt(int64(i)).Bytes())
} else { //small
return big.NewInt(int64(i)).Bytes()
}
}
for i := 0; i < 10; i++ {
vals = append(vals, getValue(i))
keys = append(keys, common.BigToHash(keyB).Bytes())
keyB = keyB.Add(keyB, keyDelta)
keyDelta.Add(keyDelta, common.Big1)
}
for i, k := range keys {
nt.TryUpdate(k, common.CopyBytes(vals[i]))
}
for i, k := range keys {
blob, err := st.MarshalBinary()
if err != nil {
t.Fatal(err)
}
newSt, err := NewFromBinary(blob, nil)
if err != nil {
t.Fatal(err)
}
st = newSt
st.TryUpdate(k, common.CopyBytes(vals[i]))
}
if have, want := st.Hash(), nt.Hash(); have != want {
t.Fatalf("have %#x want %#x", have, want)
}
}