Official Go implementation of the Ethereum protocol
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go-ethereum/trie/util_test.go

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6.7 KiB

// Copyright 2022 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package trie
import (
"bytes"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/rawdb"
)
// Tests if the trie diffs are tracked correctly.
func TestTrieTracer(t *testing.T) {
db := NewDatabase(rawdb.NewMemoryDatabase())
trie := NewEmpty(db)
trie.tracer = newTracer()
// Insert a batch of entries, all the nodes should be marked as inserted
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"dog", "puppy"},
{"somethingveryoddindeedthis is", "myothernodedata"},
}
for _, val := range vals {
trie.Update([]byte(val.k), []byte(val.v))
}
trie.Hash()
seen := make(map[string]struct{})
it := trie.NodeIterator(nil)
for it.Next(true) {
if it.Leaf() {
continue
}
seen[string(it.Path())] = struct{}{}
}
inserted := trie.tracer.insertList()
if len(inserted) != len(seen) {
t.Fatalf("Unexpected inserted node tracked want %d got %d", len(seen), len(inserted))
}
for _, k := range inserted {
_, ok := seen[string(k)]
if !ok {
t.Fatalf("Unexpected inserted node")
}
}
deleted := trie.tracer.deleteList()
if len(deleted) != 0 {
t.Fatalf("Unexpected deleted node tracked %d", len(deleted))
}
// Commit the changes and re-create with new root
root, nodes, _ := trie.Commit(false)
if err := db.Update(NewWithNodeSet(nodes)); err != nil {
t.Fatal(err)
}
trie, _ = New(TrieID(root), db)
trie.tracer = newTracer()
// Delete all the elements, check deletion set
for _, val := range vals {
trie.Delete([]byte(val.k))
}
trie.Hash()
inserted = trie.tracer.insertList()
if len(inserted) != 0 {
t.Fatalf("Unexpected inserted node tracked %d", len(inserted))
}
deleted = trie.tracer.deleteList()
if len(deleted) != len(seen) {
t.Fatalf("Unexpected deleted node tracked want %d got %d", len(seen), len(deleted))
}
for _, k := range deleted {
_, ok := seen[string(k)]
if !ok {
t.Fatalf("Unexpected inserted node")
}
}
}
func TestTrieTracerNoop(t *testing.T) {
trie := NewEmpty(NewDatabase(rawdb.NewMemoryDatabase()))
trie.tracer = newTracer()
// Insert a batch of entries, all the nodes should be marked as inserted
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"dog", "puppy"},
{"somethingveryoddindeedthis is", "myothernodedata"},
}
for _, val := range vals {
trie.Update([]byte(val.k), []byte(val.v))
}
for _, val := range vals {
trie.Delete([]byte(val.k))
}
if len(trie.tracer.insertList()) != 0 {
t.Fatalf("Unexpected inserted node tracked %d", len(trie.tracer.insertList()))
}
if len(trie.tracer.deleteList()) != 0 {
t.Fatalf("Unexpected deleted node tracked %d", len(trie.tracer.deleteList()))
}
}
func TestTrieTracePrevValue(t *testing.T) {
db := NewDatabase(rawdb.NewMemoryDatabase())
trie := NewEmpty(db)
trie.tracer = newTracer()
paths, blobs := trie.tracer.prevList()
if len(paths) != 0 || len(blobs) != 0 {
t.Fatalf("Nothing should be tracked")
}
// Insert a batch of entries, all the nodes should be marked as inserted
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"dog", "puppy"},
{"somethingveryoddindeedthis is", "myothernodedata"},
}
for _, val := range vals {
trie.Update([]byte(val.k), []byte(val.v))
}
paths, blobs = trie.tracer.prevList()
if len(paths) != 0 || len(blobs) != 0 {
t.Fatalf("Nothing should be tracked")
}
// Commit the changes and re-create with new root
root, nodes, _ := trie.Commit(false)
if err := db.Update(NewWithNodeSet(nodes)); err != nil {
t.Fatal(err)
}
trie, _ = New(TrieID(root), db)
trie.tracer = newTracer()
trie.resolveAndTrack(root.Bytes(), nil)
// Load all nodes in trie
for _, val := range vals {
trie.TryGet([]byte(val.k))
}
// Ensure all nodes are tracked by tracer with correct prev-values
iter := trie.NodeIterator(nil)
seen := make(map[string][]byte)
for iter.Next(true) {
// Embedded nodes are ignored since they are not present in
// database.
if iter.Hash() == (common.Hash{}) {
continue
}
seen[string(iter.Path())] = common.CopyBytes(iter.NodeBlob())
}
paths, blobs = trie.tracer.prevList()
if len(paths) != len(seen) || len(blobs) != len(seen) {
t.Fatalf("Unexpected tracked values")
}
for i, path := range paths {
blob := blobs[i]
prev, ok := seen[string(path)]
if !ok {
t.Fatalf("Missing node %v", path)
}
if !bytes.Equal(blob, prev) {
t.Fatalf("Unexpected value path: %v, want: %v, got: %v", path, prev, blob)
}
}
// Re-open the trie and iterate the trie, ensure nothing will be tracked.
// Iterator will not link any loaded nodes to trie.
trie, _ = New(TrieID(root), db)
trie.tracer = newTracer()
iter = trie.NodeIterator(nil)
for iter.Next(true) {
}
paths, blobs = trie.tracer.prevList()
if len(paths) != 0 || len(blobs) != 0 {
t.Fatalf("Nothing should be tracked")
}
// Re-open the trie and generate proof for entries, ensure nothing will
// be tracked. Prover will not link any loaded nodes to trie.
trie, _ = New(TrieID(root), db)
trie.tracer = newTracer()
for _, val := range vals {
trie.Prove([]byte(val.k), 0, rawdb.NewMemoryDatabase())
}
paths, blobs = trie.tracer.prevList()
if len(paths) != 0 || len(blobs) != 0 {
t.Fatalf("Nothing should be tracked")
}
// Delete entries from trie, ensure all previous values are correct.
trie, _ = New(TrieID(root), db)
trie.tracer = newTracer()
trie.resolveAndTrack(root.Bytes(), nil)
for _, val := range vals {
trie.TryDelete([]byte(val.k))
}
paths, blobs = trie.tracer.prevList()
if len(paths) != len(seen) || len(blobs) != len(seen) {
t.Fatalf("Unexpected tracked values")
}
for i, path := range paths {
blob := blobs[i]
prev, ok := seen[string(path)]
if !ok {
t.Fatalf("Missing node %v", path)
}
if !bytes.Equal(blob, prev) {
t.Fatalf("Unexpected value path: %v, want: %v, got: %v", path, prev, blob)
}
}
}