248 lines
7.9 KiB
Go
248 lines
7.9 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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"sort"
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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/crypto"
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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) AccountRangeResult {
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result, err := accountRange(*trie, start, requestedNum)
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if err != nil {
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t.Fatal(err)
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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 == nil {
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t.Fatalf("null 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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type resultHash []*common.Hash
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func (h resultHash) Len() int { return len(h) }
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func (h resultHash) Swap(i, j int) { h[i], h[j] = h[j], h[i] }
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func (h resultHash) Less(i, j int) bool { return bytes.Compare(h[i].Bytes(), h[j].Bytes()) < 0 }
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func TestAccountRange(t *testing.T) {
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var (
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statedb = state.NewDatabase(rawdb.NewMemoryDatabase())
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state, _ = state.New(common.Hash{}, 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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state.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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state.Commit(true)
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root := state.IntermediateRoot(true)
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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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t.Logf("test getting number of results less than max")
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accountRangeTest(t, &trie, state, &common.Hash{0x0}, AccountRangeMaxResults/2, AccountRangeMaxResults/2)
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t.Logf("test getting number of results greater than max %d", AccountRangeMaxResults)
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accountRangeTest(t, &trie, state, &common.Hash{0x0}, AccountRangeMaxResults*2, AccountRangeMaxResults)
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t.Logf("test with empty 'start' hash")
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accountRangeTest(t, &trie, state, nil, AccountRangeMaxResults, AccountRangeMaxResults)
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t.Logf("test pagination")
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// test pagination
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firstResult := accountRangeTest(t, &trie, state, &common.Hash{0x0}, AccountRangeMaxResults, AccountRangeMaxResults)
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t.Logf("test pagination 2")
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secondResult := accountRangeTest(t, &trie, state, &firstResult.Next, AccountRangeMaxResults, AccountRangeMaxResults)
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hList := make(resultHash, 0)
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for h1, addr1 := range firstResult.Accounts {
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h := &common.Hash{}
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h.SetBytes(h1.Bytes())
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hList = append(hList, h)
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for h2, addr2 := range secondResult.Accounts {
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// Make sure that the hashes aren't the same
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if bytes.Equal(h1.Bytes(), h2.Bytes()) {
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t.Fatalf("pagination test failed: results should not overlap")
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}
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// If either address is nil, 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 == nil || addr2 == nil {
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continue
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}
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// Since the two hashes are different, they should not have
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// the same preimage, but let's check anyway in case there
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// is a bug in the (hash, addr) map generation code.
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if bytes.Equal(addr1.Bytes(), addr2.Bytes()) {
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t.Fatalf("pagination test failed: addresses should not repeat")
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}
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}
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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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t.Logf("test random access pagination")
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sort.Sort(hList)
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middleH := hList[AccountRangeMaxResults/2]
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middleResult := accountRangeTest(t, &trie, state, middleH, AccountRangeMaxResults, AccountRangeMaxResults)
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innone, 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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innone++
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}
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}
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if innone != 0 {
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t.Fatalf("%d hashes in the 'middle' set were neither in the first not the second set", innone)
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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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var (
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statedb = state.NewDatabase(rawdb.NewMemoryDatabase())
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state, _ = state.New(common.Hash{}, statedb, nil)
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)
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state.Commit(true)
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root := state.IntermediateRoot(true)
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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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results, err := accountRange(trie, &common.Hash{0x0}, AccountRangeMaxResults)
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if err != nil {
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t.Fatalf("Empty results should not trigger an error: %v", err)
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}
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if results.Next != common.HexToHash("0") {
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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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// Create a state where account 0x010000... has a few storage entries.
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var (
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state, _ = state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), 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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state.SetState(addr, *entry.Key, entry.Value)
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}
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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(state.StorageTrie(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 0x%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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