go-ethereum/triedb/pathdb/history_trienode_test.go
rjl493456442 181a3ae9e0
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triedb/pathdb: improve trienode reader for searching (#33681)
This PR optimizes the historical trie node reader by reworking how data
is accessed and memory is managed, reducing allocation overhead 
significantly.

Specifically:

- Instead of decoding an entire history object to locate a specific trie node, 
   the reader now searches directly within the history.

- Besides, slice pre-allocation can avoid unnecessary deep-copy significantly.
2026-01-27 20:05:35 +08:00

737 lines
22 KiB
Go

// Copyright 2025 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 pathdb
import (
"bytes"
"encoding/binary"
"fmt"
"math/rand"
"reflect"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/internal/testrand"
)
// randomTrienodes generates a random trienode set.
func randomTrienodes(n int) (map[common.Hash]map[string][]byte, common.Hash) {
var (
root common.Hash
nodes = make(map[common.Hash]map[string][]byte)
)
for i := 0; i < n; i++ {
owner := testrand.Hash()
if i == 0 {
owner = common.Hash{}
}
nodes[owner] = make(map[string][]byte)
for j := 0; j < 10; j++ {
path := testrand.Bytes(rand.Intn(10))
for z := 0; z < len(path); z++ {
nodes[owner][string(path[:z])] = testrand.Bytes(rand.Intn(128))
}
}
// zero-size trie node, representing it was non-existent before
for j := 0; j < 10; j++ {
path := testrand.Bytes(32)
nodes[owner][string(path)] = nil
}
// root node with zero-size path
rnode := testrand.Bytes(256)
nodes[owner][""] = rnode
if owner == (common.Hash{}) {
root = crypto.Keccak256Hash(rnode)
}
}
return nodes, root
}
func makeTrienodeHistory() *trienodeHistory {
nodes, root := randomTrienodes(10)
return newTrienodeHistory(root, common.Hash{}, 1, nodes)
}
func makeTrienodeHistories(n int) []*trienodeHistory {
var (
parent common.Hash
result []*trienodeHistory
)
for i := 0; i < n; i++ {
nodes, root := randomTrienodes(10)
result = append(result, newTrienodeHistory(root, parent, uint64(i+1), nodes))
parent = root
}
return result
}
func TestEncodeDecodeTrienodeHistory(t *testing.T) {
var (
dec trienodeHistory
obj = makeTrienodeHistory()
)
header, keySection, valueSection, err := obj.encode()
if err != nil {
t.Fatalf("Failed to encode trienode history: %v", err)
}
if err := dec.decode(header, keySection, valueSection); err != nil {
t.Fatalf("Failed to decode trienode history: %v", err)
}
if !reflect.DeepEqual(obj.meta, dec.meta) {
t.Fatal("trienode metadata is mismatched")
}
if !compareList(dec.owners, obj.owners) {
t.Fatal("trie owner list is mismatched")
}
if !compareMapList(dec.nodeList, obj.nodeList) {
t.Fatal("trienode list is mismatched")
}
if !compareMapSet(dec.nodes, obj.nodes) {
t.Fatal("trienode content is mismatched")
}
// Re-encode again, ensuring the encoded blob still match
header2, keySection2, valueSection2, err := dec.encode()
if err != nil {
t.Fatalf("Failed to encode trienode history: %v", err)
}
if !bytes.Equal(header, header2) {
t.Fatal("re-encoded header is mismatched")
}
if !bytes.Equal(keySection, keySection2) {
t.Fatal("re-encoded key section is mismatched")
}
if !bytes.Equal(valueSection, valueSection2) {
t.Fatal("re-encoded value section is mismatched")
}
}
func TestTrienodeHistoryReader(t *testing.T) {
var (
hs = makeTrienodeHistories(10)
freezer, _ = rawdb.NewTrienodeFreezer(t.TempDir(), false, false)
)
defer freezer.Close()
for i, h := range hs {
header, keySection, valueSection, _ := h.encode()
if err := rawdb.WriteTrienodeHistory(freezer, uint64(i+1), header, keySection, valueSection); err != nil {
t.Fatalf("Failed to write trienode history: %v", err)
}
}
for i, h := range hs {
tr := newTrienodeHistoryReader(uint64(i+1), freezer)
for _, owner := range h.owners {
nodes := h.nodes[owner]
for key, value := range nodes {
blob, _, err := tr.read(owner, key)
if err != nil {
t.Fatalf("Failed to read trienode history: %v", err)
}
if !bytes.Equal(blob, value) {
t.Fatalf("Unexpected trie node data, want: %v, got: %v", value, blob)
}
}
}
}
for i, h := range hs {
metadata, err := readTrienodeMetadata(freezer, uint64(i+1))
if err != nil {
t.Fatalf("Failed to read trienode history metadata: %v", err)
}
if !reflect.DeepEqual(h.meta, metadata) {
t.Fatalf("Unexpected trienode metadata, want: %v, got: %v", h.meta, metadata)
}
}
}
// TestEmptyTrienodeHistory tests encoding/decoding of empty trienode history
func TestEmptyTrienodeHistory(t *testing.T) {
h := newTrienodeHistory(common.Hash{}, common.Hash{}, 1, make(map[common.Hash]map[string][]byte))
// Test encoding empty history
header, keySection, valueSection, err := h.encode()
if err != nil {
t.Fatalf("Failed to encode empty trienode history: %v", err)
}
// Verify sections are minimal but valid
if len(header) == 0 {
t.Fatal("Header should not be empty")
}
if len(keySection) != 0 {
t.Fatal("Key section should be empty for empty history")
}
if len(valueSection) != 0 {
t.Fatal("Value section should be empty for empty history")
}
// Test decoding empty history
var decoded trienodeHistory
if err := decoded.decode(header, keySection, valueSection); err != nil {
t.Fatalf("Failed to decode empty trienode history: %v", err)
}
if len(decoded.owners) != 0 {
t.Fatal("Decoded history should have no owners")
}
if len(decoded.nodeList) != 0 {
t.Fatal("Decoded history should have no node lists")
}
if len(decoded.nodes) != 0 {
t.Fatal("Decoded history should have no nodes")
}
}
// TestSingleTrieHistory tests encoding/decoding of history with single trie
func TestSingleTrieHistory(t *testing.T) {
nodes := make(map[common.Hash]map[string][]byte)
owner := testrand.Hash()
nodes[owner] = make(map[string][]byte)
// Add some nodes with various sizes
nodes[owner][""] = testrand.Bytes(32) // empty key
nodes[owner]["a"] = testrand.Bytes(1) // small value
nodes[owner]["bb"] = testrand.Bytes(100) // medium value
nodes[owner]["ccc"] = testrand.Bytes(1000) // large value
nodes[owner]["dddd"] = testrand.Bytes(0) // empty value
h := newTrienodeHistory(common.Hash{}, common.Hash{}, 1, nodes)
testEncodeDecode(t, h)
}
// TestMultipleTries tests multiple tries with different node counts
func TestMultipleTries(t *testing.T) {
nodes := make(map[common.Hash]map[string][]byte)
// First trie with many small nodes
owner1 := testrand.Hash()
nodes[owner1] = make(map[string][]byte)
for i := 0; i < 100; i++ {
key := string(testrand.Bytes(rand.Intn(10)))
nodes[owner1][key] = testrand.Bytes(rand.Intn(50))
}
// Second trie with few large nodes
owner2 := testrand.Hash()
nodes[owner2] = make(map[string][]byte)
for i := 0; i < 5; i++ {
key := string(testrand.Bytes(rand.Intn(20)))
nodes[owner2][key] = testrand.Bytes(1000 + rand.Intn(1000))
}
// Third trie with nil values (zero-size nodes)
owner3 := testrand.Hash()
nodes[owner3] = make(map[string][]byte)
for i := 0; i < 10; i++ {
key := string(testrand.Bytes(rand.Intn(15)))
nodes[owner3][key] = nil
}
h := newTrienodeHistory(common.Hash{}, common.Hash{}, 1, nodes)
testEncodeDecode(t, h)
}
// TestLargeNodeValues tests encoding/decoding with very large node values
func TestLargeNodeValues(t *testing.T) {
nodes := make(map[common.Hash]map[string][]byte)
owner := testrand.Hash()
nodes[owner] = make(map[string][]byte)
// Test with progressively larger values
sizes := []int{1024, 10 * 1024, 100 * 1024, 1024 * 1024} // 1KB, 10KB, 100KB, 1MB
for _, size := range sizes {
key := string(testrand.Bytes(10))
nodes[owner][key] = testrand.Bytes(size)
h := newTrienodeHistory(common.Hash{}, common.Hash{}, 1, nodes)
testEncodeDecode(t, h)
t.Logf("Successfully tested encoding/decoding with %dKB value", size/1024)
}
}
// TestNilNodeValues tests encoding/decoding with nil (zero-length) node values
func TestNilNodeValues(t *testing.T) {
nodes := make(map[common.Hash]map[string][]byte)
owner := testrand.Hash()
nodes[owner] = make(map[string][]byte)
// Mix of nil and non-nil values
nodes[owner]["nil"] = nil
nodes[owner]["data1"] = []byte("some data")
nodes[owner]["data2"] = []byte("more data")
h := newTrienodeHistory(common.Hash{}, common.Hash{}, 1, nodes)
testEncodeDecode(t, h)
// Verify nil values are preserved
_, ok := h.nodes[owner]["nil"]
if !ok {
t.Fatal("Nil value should be preserved")
}
}
// TestCorruptedHeader tests error handling for corrupted header data
func TestCorruptedHeader(t *testing.T) {
h := makeTrienodeHistory()
header, keySection, valueSection, _ := h.encode()
// Test corrupted version
corruptedHeader := make([]byte, len(header))
copy(corruptedHeader, header)
corruptedHeader[0] = 0xFF // Invalid version
var decoded trienodeHistory
if err := decoded.decode(corruptedHeader, keySection, valueSection); err == nil {
t.Fatal("Expected error for corrupted version")
}
// Test truncated header
truncatedHeader := header[:len(header)-5]
if err := decoded.decode(truncatedHeader, keySection, valueSection); err == nil {
t.Fatal("Expected error for truncated header")
}
// Test header with invalid trie header size
invalidHeader := make([]byte, len(header))
copy(invalidHeader, header)
invalidHeader = invalidHeader[:trienodeMetadataSize+5] // Not divisible by trie header size
if err := decoded.decode(invalidHeader, keySection, valueSection); err == nil {
t.Fatal("Expected error for invalid header size")
}
}
// TestCorruptedKeySection tests error handling for corrupted key section data
func TestCorruptedKeySection(t *testing.T) {
h := makeTrienodeHistory()
header, keySection, valueSection, _ := h.encode()
// Test empty key section when header indicates data
if len(keySection) > 0 {
var decoded trienodeHistory
if err := decoded.decode(header, []byte{}, valueSection); err == nil {
t.Fatal("Expected error for empty key section with non-empty header")
}
}
// Test truncated key section
if len(keySection) > 10 {
truncatedKeySection := keySection[:len(keySection)-10]
var decoded trienodeHistory
if err := decoded.decode(header, truncatedKeySection, valueSection); err == nil {
t.Fatal("Expected error for truncated key section")
}
}
// Test corrupted key section with invalid varint
corruptedKeySection := make([]byte, len(keySection))
copy(corruptedKeySection, keySection)
if len(corruptedKeySection) > 5 {
corruptedKeySection[5] = 0xFF // Corrupt varint encoding
var decoded trienodeHistory
if err := decoded.decode(header, corruptedKeySection, valueSection); err == nil {
t.Fatal("Expected error for corrupted varint in key section")
}
}
}
// TestCorruptedValueSection tests error handling for corrupted value section data
func TestCorruptedValueSection(t *testing.T) {
h := makeTrienodeHistory()
header, keySection, valueSection, _ := h.encode()
// Test truncated value section
if len(valueSection) > 10 {
truncatedValueSection := valueSection[:len(valueSection)-10]
var decoded trienodeHistory
if err := decoded.decode(header, keySection, truncatedValueSection); err == nil {
t.Fatal("Expected error for truncated value section")
}
}
// Test empty value section when key section indicates data exists
if len(valueSection) > 0 {
var decoded trienodeHistory
if err := decoded.decode(header, keySection, []byte{}); err == nil {
t.Fatal("Expected error for empty value section with non-empty key section")
}
}
}
// TestInvalidOffsets tests error handling for invalid offsets in encoded data
func TestInvalidOffsets(t *testing.T) {
h := makeTrienodeHistory()
header, keySection, valueSection, _ := h.encode()
// Corrupt key offset in header (make it larger than key section)
corruptedHeader := make([]byte, len(header))
copy(corruptedHeader, header)
corruptedHeader[trienodeMetadataSize+common.HashLength] = 0xff
var dec1 trienodeHistory
if err := dec1.decode(corruptedHeader, keySection, valueSection); err == nil {
t.Fatal("Expected error for invalid key offset")
}
// Corrupt value offset in header (make it larger than value section)
corruptedHeader = make([]byte, len(header))
copy(corruptedHeader, header)
corruptedHeader[trienodeMetadataSize+common.HashLength+4] = 0xff
var dec2 trienodeHistory
if err := dec2.decode(corruptedHeader, keySection, valueSection); err == nil {
t.Fatal("Expected error for invalid value offset")
}
}
// TestTrienodeHistoryReaderNonExistentPath tests reading non-existent paths
func TestTrienodeHistoryReaderNonExistentPath(t *testing.T) {
var (
h = makeTrienodeHistory()
freezer, _ = rawdb.NewTrienodeFreezer(t.TempDir(), false, false)
)
defer freezer.Close()
header, keySection, valueSection, _ := h.encode()
if err := rawdb.WriteTrienodeHistory(freezer, 1, header, keySection, valueSection); err != nil {
t.Fatalf("Failed to write trienode history: %v", err)
}
tr := newTrienodeHistoryReader(1, freezer)
// Try to read a non-existent path
var (
err error
found bool
)
_, found, err = tr.read(testrand.Hash(), "nonexistent")
if found || err != nil {
t.Fatal("Expected not found for non-existent trie owner")
}
// Try to read from existing owner but non-existent path
owner := h.owners[0]
_, found, err = tr.read(owner, "nonexistent-path")
if found || err != nil {
t.Fatal("Expected not found for non-existent path")
}
}
// TestTrienodeHistoryReaderNilValues tests reading nil (zero-length) values
func TestTrienodeHistoryReaderNilValues(t *testing.T) {
nodes := make(map[common.Hash]map[string][]byte)
owner := testrand.Hash()
nodes[owner] = make(map[string][]byte)
// Add some nil values
nodes[owner]["nil1"] = nil
nodes[owner]["nil2"] = nil
nodes[owner]["data1"] = []byte("some data")
h := newTrienodeHistory(common.Hash{}, common.Hash{}, 1, nodes)
var freezer, _ = rawdb.NewTrienodeFreezer(t.TempDir(), false, false)
defer freezer.Close()
header, keySection, valueSection, _ := h.encode()
if err := rawdb.WriteTrienodeHistory(freezer, 1, header, keySection, valueSection); err != nil {
t.Fatalf("Failed to write trienode history: %v", err)
}
tr := newTrienodeHistoryReader(1, freezer)
// Test reading nil values
data1, found, err := tr.read(owner, "nil1")
if err != nil || !found {
t.Fatalf("Failed to read nil value: %v", err)
}
if len(data1) != 0 {
t.Fatal("Expected nil data for nil value")
}
data2, found, err := tr.read(owner, "nil2")
if err != nil || !found {
t.Fatalf("Failed to read nil value: %v", err)
}
if len(data2) != 0 {
t.Fatal("Expected nil data for nil value")
}
// Test reading non-nil value
data3, found, err := tr.read(owner, "data1")
if err != nil || !found {
t.Fatalf("Failed to read non-nil value: %v", err)
}
if !bytes.Equal(data3, []byte("some data")) {
t.Fatal("Data mismatch for non-nil value")
}
}
// TestTrienodeHistoryReaderNilKey tests reading nil (zero-length) key
func TestTrienodeHistoryReaderNilKey(t *testing.T) {
nodes := make(map[common.Hash]map[string][]byte)
owner := testrand.Hash()
nodes[owner] = make(map[string][]byte)
// Add some nil values
nodes[owner][""] = []byte("some data")
nodes[owner]["data1"] = []byte("some data1")
h := newTrienodeHistory(common.Hash{}, common.Hash{}, 1, nodes)
var freezer, _ = rawdb.NewTrienodeFreezer(t.TempDir(), false, false)
defer freezer.Close()
header, keySection, valueSection, _ := h.encode()
if err := rawdb.WriteTrienodeHistory(freezer, 1, header, keySection, valueSection); err != nil {
t.Fatalf("Failed to write trienode history: %v", err)
}
tr := newTrienodeHistoryReader(1, freezer)
// Test reading nil values
data1, _, err := tr.read(owner, "")
if err != nil {
t.Fatalf("Failed to read nil value: %v", err)
}
if !bytes.Equal(data1, []byte("some data")) {
t.Fatal("Data mismatch for nil key")
}
// Test reading non-nil value
data2, _, err := tr.read(owner, "data1")
if err != nil {
t.Fatalf("Failed to read non-nil value: %v", err)
}
if !bytes.Equal(data2, []byte("some data1")) {
t.Fatal("Data mismatch for non-nil key")
}
}
// TestCommonPrefixLen tests the commonPrefixLen helper function
func TestCommonPrefixLen(t *testing.T) {
tests := []struct {
a, b []byte
expected int
}{
// Empty strings
{[]byte(""), []byte(""), 0},
// One empty string
{[]byte(""), []byte("abc"), 0},
{[]byte("abc"), []byte(""), 0},
// No common prefix
{[]byte("abc"), []byte("def"), 0},
// Partial common prefix
{[]byte("abc"), []byte("abx"), 2},
{[]byte("prefix"), []byte("pref"), 4},
// Complete common prefix (shorter first)
{[]byte("ab"), []byte("abcd"), 2},
// Complete common prefix (longer first)
{[]byte("abcd"), []byte("ab"), 2},
// Identical strings
{[]byte("identical"), []byte("identical"), 9},
// Binary data
{[]byte{0x00, 0x01, 0x02}, []byte{0x00, 0x01, 0x03}, 2},
// Large strings
{bytes.Repeat([]byte("a"), 1000), bytes.Repeat([]byte("a"), 1000), 1000},
{bytes.Repeat([]byte("a"), 1000), append(bytes.Repeat([]byte("a"), 999), []byte("b")...), 999},
}
for i, test := range tests {
result := commonPrefixLen(test.a, test.b)
if result != test.expected {
t.Errorf("Test %d: sharedLen(%q, %q) = %d, expected %d",
i, test.a, test.b, result, test.expected)
}
// Test commutativity
resultReverse := commonPrefixLen(test.b, test.a)
if result != resultReverse {
t.Errorf("Test %d: sharedLen is not commutative: sharedLen(a,b)=%d, sharedLen(b,a)=%d",
i, result, resultReverse)
}
}
}
// TestDecodeHeaderCorruptedData tests decodeHeader with corrupted data
func TestDecodeHeaderCorruptedData(t *testing.T) {
// Create valid header data first
h := makeTrienodeHistory()
header, _, _, _ := h.encode()
// Test with empty header
_, _, _, _, err := decodeHeader([]byte{})
if err == nil {
t.Fatal("Expected error for empty header")
}
// Test with invalid version
corruptedVersion := make([]byte, len(header))
copy(corruptedVersion, header)
corruptedVersion[0] = 0xFF
_, _, _, _, err = decodeHeader(corruptedVersion)
if err == nil {
t.Fatal("Expected error for invalid version")
}
// Test with truncated header (not divisible by trie header size)
truncated := header[:trienodeMetadataSize+5]
_, _, _, _, err = decodeHeader(truncated)
if err == nil {
t.Fatal("Expected error for truncated header")
}
// Test with unordered trie owners
unordered := make([]byte, len(header))
copy(unordered, header)
// Swap two owner hashes to make them unordered
hash1Start := trienodeMetadataSize
hash2Start := trienodeMetadataSize + trienodeTrieHeaderSize
hash1 := unordered[hash1Start : hash1Start+common.HashLength]
hash2 := unordered[hash2Start : hash2Start+common.HashLength]
// Only swap if they would be out of order
copy(unordered[hash1Start:hash1Start+common.HashLength], hash2)
copy(unordered[hash2Start:hash2Start+common.HashLength], hash1)
_, _, _, _, err = decodeHeader(unordered)
if err == nil {
t.Fatal("Expected error for unordered trie owners")
}
}
// TestDecodeSingleCorruptedData tests decodeSingle with corrupted data
func TestDecodeSingleCorruptedData(t *testing.T) {
h := makeTrienodeHistory()
_, keySection, _, _ := h.encode()
// Test with empty key section
err := decodeSingle([]byte{}, nil)
if err == nil {
t.Fatal("Expected error for empty key section")
}
// Test with key section too small for trailer
if len(keySection) > 0 {
err := decodeSingle(keySection[:3], nil) // Less than 4 bytes for trailer
if err == nil {
t.Fatal("Expected error for key section too small for trailer")
}
}
// Test with corrupted varint in key section
corrupted := make([]byte, len(keySection))
copy(corrupted, keySection)
// Fill first 10 bytes with 0xFF to create a varint overflow (>64 bits)
for i := range 10 {
corrupted[i] = 0xFF
}
err = decodeSingle(corrupted, nil)
if err == nil {
t.Fatal("Expected error for corrupted varint")
}
// Test with corrupted trailer (invalid restart count)
corrupted = make([]byte, len(keySection))
copy(corrupted, keySection)
// Set restart count to something too large
binary.BigEndian.PutUint32(corrupted[len(corrupted)-4:], 10000)
err = decodeSingle(corrupted, nil)
if err == nil {
t.Fatal("Expected error for invalid restart count")
}
}
// Helper function to test encode/decode cycle
func testEncodeDecode(t *testing.T, h *trienodeHistory) {
header, keySection, valueSection, err := h.encode()
if err != nil {
t.Fatalf("Failed to encode trienode history: %v", err)
}
var decoded trienodeHistory
if err := decoded.decode(header, keySection, valueSection); err != nil {
t.Fatalf("Failed to decode trienode history: %v", err)
}
// Compare the decoded history with original
if !compareList(decoded.owners, h.owners) {
t.Fatal("Trie owner list mismatch")
}
if !compareMapList(decoded.nodeList, h.nodeList) {
t.Fatal("Trienode list mismatch")
}
if !compareMapSet(decoded.nodes, h.nodes) {
t.Fatal("Trienode content mismatch")
}
}
func TestSearchSingle(t *testing.T) {
nodes := make(map[common.Hash]map[string][]byte)
ownerA, ownerB := testrand.Hash(), testrand.Hash()
nodes[ownerA] = make(map[string][]byte)
nodes[ownerB] = make(map[string][]byte)
for i := 0; i < trienodeDataBlockRestartLen*2; i++ {
nodes[ownerA][fmt.Sprintf("%d", 2*i+1)] = testrand.Bytes(rand.Intn(5))
nodes[ownerB][fmt.Sprintf("%d", 2*i+1)] = testrand.Bytes(rand.Intn(5))
}
h := newTrienodeHistory(common.Hash{}, common.Hash{}, 1, nodes)
var freezer, _ = rawdb.NewTrienodeFreezer(t.TempDir(), false, false)
defer freezer.Close()
header, keySection, valueSection, _ := h.encode()
if err := rawdb.WriteTrienodeHistory(freezer, 1, header, keySection, valueSection); err != nil {
t.Fatalf("Failed to write trienode history: %v", err)
}
tr := newTrienodeHistoryReader(1, freezer)
// Test reading non-existent entry
keys := []string{
"0",
"2",
"30",
"32",
"64",
"1000",
}
for _, key := range keys {
_, found, err := tr.read(ownerA, key)
if err != nil || found {
t.Fatalf("Expected non-existent entry %v", err)
}
_, found, err = tr.read(ownerB, key)
if err != nil || found {
t.Fatalf("Expected non-existent entry %v", err)
}
}
for owner, subnodes := range nodes {
for key, value := range subnodes {
got, found, err := tr.read(owner, key)
if err != nil || !found {
t.Fatal("Failed to read trienode")
}
if bytes.Compare(got, value) != 0 {
t.Fatalf("Unexpected value for key %v, got %v, expected %v", []byte(key), got, value)
}
}
}
}