0acc0a1f86
This change improves function description and simplifies logic in statedb update and commit operations.
222 lines
7.3 KiB
Go
222 lines
7.3 KiB
Go
// Copyright 2017 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package eth
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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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"reflect"
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"testing"
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"github.com/davecgh/go-spew/spew"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/state"
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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/trie"
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"golang.org/x/exp/slices"
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)
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var dumper = spew.ConfigState{Indent: " "}
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func accountRangeTest(t *testing.T, trie *state.Trie, statedb *state.StateDB, start common.Hash, requestedNum int, expectedNum int) state.IteratorDump {
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result := statedb.IteratorDump(&state.DumpConfig{
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SkipCode: true,
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SkipStorage: true,
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OnlyWithAddresses: false,
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Start: start.Bytes(),
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Max: uint64(requestedNum),
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})
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if len(result.Accounts) != expectedNum {
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t.Fatalf("expected %d results, got %d", expectedNum, len(result.Accounts))
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}
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for address := range result.Accounts {
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if address == (common.Address{}) {
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t.Fatalf("empty address returned")
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}
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if !statedb.Exist(address) {
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t.Fatalf("account not found in state %s", address.Hex())
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}
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}
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return result
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}
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func TestAccountRange(t *testing.T) {
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t.Parallel()
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var (
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statedb = state.NewDatabaseWithConfig(rawdb.NewMemoryDatabase(), &trie.Config{Preimages: true})
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sdb, _ = state.New(types.EmptyRootHash, statedb, nil)
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addrs = [AccountRangeMaxResults * 2]common.Address{}
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m = map[common.Address]bool{}
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)
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for i := range addrs {
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hash := common.HexToHash(fmt.Sprintf("%x", i))
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addr := common.BytesToAddress(crypto.Keccak256Hash(hash.Bytes()).Bytes())
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addrs[i] = addr
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sdb.SetBalance(addrs[i], big.NewInt(1))
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if _, ok := m[addr]; ok {
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t.Fatalf("bad")
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} else {
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m[addr] = true
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}
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}
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root, _ := sdb.Commit(0, true)
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sdb, _ = state.New(root, statedb, nil)
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trie, err := statedb.OpenTrie(root)
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if err != nil {
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t.Fatal(err)
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}
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accountRangeTest(t, &trie, sdb, common.Hash{}, AccountRangeMaxResults/2, AccountRangeMaxResults/2)
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// test pagination
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firstResult := accountRangeTest(t, &trie, sdb, common.Hash{}, AccountRangeMaxResults, AccountRangeMaxResults)
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secondResult := accountRangeTest(t, &trie, sdb, common.BytesToHash(firstResult.Next), AccountRangeMaxResults, AccountRangeMaxResults)
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hList := make([]common.Hash, 0)
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for addr1 := range firstResult.Accounts {
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// If address is empty, then it makes no sense to compare
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// them as they might be two different accounts.
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if addr1 == (common.Address{}) {
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continue
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}
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if _, duplicate := secondResult.Accounts[addr1]; duplicate {
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t.Fatalf("pagination test failed: results should not overlap")
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}
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hList = append(hList, crypto.Keccak256Hash(addr1.Bytes()))
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}
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// Test to see if it's possible to recover from the middle of the previous
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// set and get an even split between the first and second sets.
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slices.SortFunc(hList, common.Hash.Cmp)
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middleH := hList[AccountRangeMaxResults/2]
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middleResult := accountRangeTest(t, &trie, sdb, middleH, AccountRangeMaxResults, AccountRangeMaxResults)
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missing, infirst, insecond := 0, 0, 0
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for h := range middleResult.Accounts {
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if _, ok := firstResult.Accounts[h]; ok {
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infirst++
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} else if _, ok := secondResult.Accounts[h]; ok {
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insecond++
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} else {
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missing++
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}
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}
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if missing != 0 {
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t.Fatalf("%d hashes in the 'middle' set were neither in the first not the second set", missing)
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}
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if infirst != AccountRangeMaxResults/2 {
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t.Fatalf("Imbalance in the number of first-test results: %d != %d", infirst, AccountRangeMaxResults/2)
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}
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if insecond != AccountRangeMaxResults/2 {
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t.Fatalf("Imbalance in the number of second-test results: %d != %d", insecond, AccountRangeMaxResults/2)
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}
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}
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func TestEmptyAccountRange(t *testing.T) {
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t.Parallel()
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var (
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statedb = state.NewDatabase(rawdb.NewMemoryDatabase())
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st, _ = state.New(types.EmptyRootHash, statedb, nil)
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)
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// Commit(although nothing to flush) and re-init the statedb
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st.Commit(0, true)
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st, _ = state.New(types.EmptyRootHash, statedb, nil)
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results := st.IteratorDump(&state.DumpConfig{
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SkipCode: true,
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SkipStorage: true,
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OnlyWithAddresses: true,
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Max: uint64(AccountRangeMaxResults),
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})
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if bytes.Equal(results.Next, (common.Hash{}).Bytes()) {
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t.Fatalf("Empty results should not return a second page")
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}
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if len(results.Accounts) != 0 {
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t.Fatalf("Empty state should not return addresses: %v", results.Accounts)
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}
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}
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func TestStorageRangeAt(t *testing.T) {
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t.Parallel()
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// Create a state where account 0x010000... has a few storage entries.
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var (
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db = state.NewDatabaseWithConfig(rawdb.NewMemoryDatabase(), &trie.Config{Preimages: true})
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sdb, _ = state.New(types.EmptyRootHash, db, nil)
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addr = common.Address{0x01}
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keys = []common.Hash{ // hashes of Keys of storage
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common.HexToHash("340dd630ad21bf010b4e676dbfa9ba9a02175262d1fa356232cfde6cb5b47ef2"),
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common.HexToHash("426fcb404ab2d5d8e61a3d918108006bbb0a9be65e92235bb10eefbdb6dcd053"),
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common.HexToHash("48078cfed56339ea54962e72c37c7f588fc4f8e5bc173827ba75cb10a63a96a5"),
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common.HexToHash("5723d2c3a83af9b735e3b7f21531e5623d183a9095a56604ead41f3582fdfb75"),
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}
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storage = storageMap{
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keys[0]: {Key: &common.Hash{0x02}, Value: common.Hash{0x01}},
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keys[1]: {Key: &common.Hash{0x04}, Value: common.Hash{0x02}},
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keys[2]: {Key: &common.Hash{0x01}, Value: common.Hash{0x03}},
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keys[3]: {Key: &common.Hash{0x03}, Value: common.Hash{0x04}},
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}
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)
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for _, entry := range storage {
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sdb.SetState(addr, *entry.Key, entry.Value)
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}
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root, _ := sdb.Commit(0, false)
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sdb, _ = state.New(root, db, nil)
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// Check a few combinations of limit and start/end.
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tests := []struct {
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start []byte
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limit int
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want StorageRangeResult
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}{
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{
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start: []byte{}, limit: 0,
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want: StorageRangeResult{storageMap{}, &keys[0]},
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},
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{
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start: []byte{}, limit: 100,
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want: StorageRangeResult{storage, nil},
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},
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{
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start: []byte{}, limit: 2,
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want: StorageRangeResult{storageMap{keys[0]: storage[keys[0]], keys[1]: storage[keys[1]]}, &keys[2]},
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},
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{
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start: []byte{0x00}, limit: 4,
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want: StorageRangeResult{storage, nil},
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},
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{
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start: []byte{0x40}, limit: 2,
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want: StorageRangeResult{storageMap{keys[1]: storage[keys[1]], keys[2]: storage[keys[2]]}, &keys[3]},
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},
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}
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for _, test := range tests {
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result, err := storageRangeAt(sdb, root, addr, test.start, test.limit)
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if err != nil {
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t.Error(err)
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}
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if !reflect.DeepEqual(result, test.want) {
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t.Fatalf("wrong result for range %#x.., limit %d:\ngot %s\nwant %s",
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test.start, test.limit, dumper.Sdump(result), dumper.Sdump(&test.want))
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}
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}
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}
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