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blockchain_test.go
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blockchain_test.go
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// Copyright 2014 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 core
import (
"errors"
"fmt"
"math/big"
"math/rand"
"os"
"sync"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/math"
"github.com/ethereum/go-ethereum/consensus"
"github.com/ethereum/go-ethereum/consensus/beacon"
"github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth/tracers/logger"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/trie"
)
// So we can deterministically seed different blockchains
var (
canonicalSeed = 1
forkSeed = 2
)
// newCanonical creates a chain database, and injects a deterministic canonical
// chain. Depending on the full flag, if creates either a full block chain or a
// header only chain. The database and genesis specification for block generation
// are also returned in case more test blocks are needed later.
func newCanonical(engine consensus.Engine, n int, full bool) (ethdb.Database, *Genesis, *BlockChain, error) {
var (
genesis = &Genesis{
BaseFee: big.NewInt(params.InitialBaseFee),
Config: params.AllEthashProtocolChanges,
}
)
// Initialize a fresh chain with only a genesis block
blockchain, _ := NewBlockChain(rawdb.NewMemoryDatabase(), nil, genesis, nil, engine, vm.Config{}, nil, nil)
// Create and inject the requested chain
if n == 0 {
return rawdb.NewMemoryDatabase(), genesis, blockchain, nil
}
if full {
// Full block-chain requested
genDb, blocks := makeBlockChainWithGenesis(genesis, n, engine, canonicalSeed)
_, err := blockchain.InsertChain(blocks)
return genDb, genesis, blockchain, err
}
// Header-only chain requested
genDb, headers := makeHeaderChainWithGenesis(genesis, n, engine, canonicalSeed)
_, err := blockchain.InsertHeaderChain(headers)
return genDb, genesis, blockchain, err
}
func newGwei(n int64) *big.Int {
return new(big.Int).Mul(big.NewInt(n), big.NewInt(params.GWei))
}
// Test fork of length N starting from block i
func testFork(t *testing.T, blockchain *BlockChain, i, n int, full bool, comparator func(td1, td2 *big.Int)) {
// Copy old chain up to #i into a new db
genDb, _, blockchain2, err := newCanonical(ethash.NewFaker(), i, full)
if err != nil {
t.Fatal("could not make new canonical in testFork", err)
}
defer blockchain2.Stop()
// Assert the chains have the same header/block at #i
var hash1, hash2 common.Hash
if full {
hash1 = blockchain.GetBlockByNumber(uint64(i)).Hash()
hash2 = blockchain2.GetBlockByNumber(uint64(i)).Hash()
} else {
hash1 = blockchain.GetHeaderByNumber(uint64(i)).Hash()
hash2 = blockchain2.GetHeaderByNumber(uint64(i)).Hash()
}
if hash1 != hash2 {
t.Errorf("chain content mismatch at %d: have hash %v, want hash %v", i, hash2, hash1)
}
// Extend the newly created chain
var (
blockChainB []*types.Block
headerChainB []*types.Header
)
if full {
blockChainB = makeBlockChain(blockchain2.chainConfig, blockchain2.GetBlockByHash(blockchain2.CurrentBlock().Hash()), n, ethash.NewFaker(), genDb, forkSeed)
if _, err := blockchain2.InsertChain(blockChainB); err != nil {
t.Fatalf("failed to insert forking chain: %v", err)
}
} else {
headerChainB = makeHeaderChain(blockchain2.chainConfig, blockchain2.CurrentHeader(), n, ethash.NewFaker(), genDb, forkSeed)
if _, err := blockchain2.InsertHeaderChain(headerChainB); err != nil {
t.Fatalf("failed to insert forking chain: %v", err)
}
}
// Sanity check that the forked chain can be imported into the original
var tdPre, tdPost *big.Int
if full {
cur := blockchain.CurrentBlock()
tdPre = blockchain.GetTd(cur.Hash(), cur.Number.Uint64())
if err := testBlockChainImport(blockChainB, blockchain); err != nil {
t.Fatalf("failed to import forked block chain: %v", err)
}
last := blockChainB[len(blockChainB)-1]
tdPost = blockchain.GetTd(last.Hash(), last.NumberU64())
} else {
cur := blockchain.CurrentHeader()
tdPre = blockchain.GetTd(cur.Hash(), cur.Number.Uint64())
if err := testHeaderChainImport(headerChainB, blockchain); err != nil {
t.Fatalf("failed to import forked header chain: %v", err)
}
last := headerChainB[len(headerChainB)-1]
tdPost = blockchain.GetTd(last.Hash(), last.Number.Uint64())
}
// Compare the total difficulties of the chains
comparator(tdPre, tdPost)
}
// testBlockChainImport tries to process a chain of blocks, writing them into
// the database if successful.
func testBlockChainImport(chain types.Blocks, blockchain *BlockChain) error {
for _, block := range chain {
// Try and process the block
err := blockchain.engine.VerifyHeader(blockchain, block.Header())
if err == nil {
err = blockchain.validator.ValidateBody(nil, block)
}
if err != nil {
if err == ErrKnownBlock {
continue
}
return err
}
statedb, err := state.New(blockchain.GetBlockByHash(block.ParentHash()).Root(), blockchain.stateCache, nil)
if err != nil {
return err
}
receipts, _, usedGas, err := blockchain.processor.Process(block, statedb, vm.Config{})
if err != nil {
blockchain.reportBlock(block, receipts, err)
return err
}
err = blockchain.validator.ValidateState(block, statedb, receipts, usedGas)
if err != nil {
blockchain.reportBlock(block, receipts, err)
return err
}
blockchain.chainmu.MustLock()
rawdb.WriteTd(blockchain.db, block.Hash(), block.NumberU64(), new(big.Int).Add(block.Difficulty(), blockchain.GetTd(block.ParentHash(), block.NumberU64()-1)))
rawdb.WriteBlock(blockchain.db, block)
statedb.Commit(false)
blockchain.chainmu.Unlock()
}
return nil
}
// testHeaderChainImport tries to process a chain of header, writing them into
// the database if successful.
func testHeaderChainImport(chain []*types.Header, blockchain *BlockChain) error {
for _, header := range chain {
// Try and validate the header
if err := blockchain.engine.VerifyHeader(blockchain, header); err != nil {
return err
}
// Manually insert the header into the database, but don't reorganise (allows subsequent testing)
blockchain.chainmu.MustLock()
rawdb.WriteTd(blockchain.db, header.Hash(), header.Number.Uint64(), new(big.Int).Add(header.Difficulty, blockchain.GetTd(header.ParentHash, header.Number.Uint64()-1)))
rawdb.WriteHeader(blockchain.db, header)
blockchain.chainmu.Unlock()
}
return nil
}
func TestLastBlock(t *testing.T) {
genDb, _, blockchain, err := newCanonical(ethash.NewFaker(), 0, true)
if err != nil {
t.Fatalf("failed to create pristine chain: %v", err)
}
defer blockchain.Stop()
blocks := makeBlockChain(blockchain.chainConfig, blockchain.GetBlockByHash(blockchain.CurrentBlock().Hash()), 1, ethash.NewFullFaker(), genDb, 0)
if _, err := blockchain.InsertChain(blocks); err != nil {
t.Fatalf("Failed to insert block: %v", err)
}
if blocks[len(blocks)-1].Hash() != rawdb.ReadHeadBlockHash(blockchain.db) {
t.Fatalf("Write/Get HeadBlockHash failed")
}
}
// Test inserts the blocks/headers after the fork choice rule is changed.
// The chain is reorged to whatever specified.
func testInsertAfterMerge(t *testing.T, blockchain *BlockChain, i, n int, full bool) {
// Copy old chain up to #i into a new db
genDb, _, blockchain2, err := newCanonical(ethash.NewFaker(), i, full)
if err != nil {
t.Fatal("could not make new canonical in testFork", err)
}
defer blockchain2.Stop()
// Assert the chains have the same header/block at #i
var hash1, hash2 common.Hash
if full {
hash1 = blockchain.GetBlockByNumber(uint64(i)).Hash()
hash2 = blockchain2.GetBlockByNumber(uint64(i)).Hash()
} else {
hash1 = blockchain.GetHeaderByNumber(uint64(i)).Hash()
hash2 = blockchain2.GetHeaderByNumber(uint64(i)).Hash()
}
if hash1 != hash2 {
t.Errorf("chain content mismatch at %d: have hash %v, want hash %v", i, hash2, hash1)
}
// Extend the newly created chain
if full {
blockChainB := makeBlockChain(blockchain2.chainConfig, blockchain2.GetBlockByHash(blockchain2.CurrentBlock().Hash()), n, ethash.NewFaker(), genDb, forkSeed)
if _, err := blockchain2.InsertChain(blockChainB); err != nil {
t.Fatalf("failed to insert forking chain: %v", err)
}
if blockchain2.CurrentBlock().Number.Uint64() != blockChainB[len(blockChainB)-1].NumberU64() {
t.Fatalf("failed to reorg to the given chain")
}
if blockchain2.CurrentBlock().Hash() != blockChainB[len(blockChainB)-1].Hash() {
t.Fatalf("failed to reorg to the given chain")
}
} else {
headerChainB := makeHeaderChain(blockchain2.chainConfig, blockchain2.CurrentHeader(), n, ethash.NewFaker(), genDb, forkSeed)
if _, err := blockchain2.InsertHeaderChain(headerChainB); err != nil {
t.Fatalf("failed to insert forking chain: %v", err)
}
if blockchain2.CurrentHeader().Number.Uint64() != headerChainB[len(headerChainB)-1].Number.Uint64() {
t.Fatalf("failed to reorg to the given chain")
}
if blockchain2.CurrentHeader().Hash() != headerChainB[len(headerChainB)-1].Hash() {
t.Fatalf("failed to reorg to the given chain")
}
}
}
// Tests that given a starting canonical chain of a given size, it can be extended
// with various length chains.
func TestExtendCanonicalHeaders(t *testing.T) { testExtendCanonical(t, false) }
func TestExtendCanonicalBlocks(t *testing.T) { testExtendCanonical(t, true) }
func testExtendCanonical(t *testing.T, full bool) {
length := 5
// Make first chain starting from genesis
_, _, processor, err := newCanonical(ethash.NewFaker(), length, full)
if err != nil {
t.Fatalf("failed to make new canonical chain: %v", err)
}
defer processor.Stop()
// Define the difficulty comparator
better := func(td1, td2 *big.Int) {
if td2.Cmp(td1) <= 0 {
t.Errorf("total difficulty mismatch: have %v, expected more than %v", td2, td1)
}
}
// Start fork from current height
testFork(t, processor, length, 1, full, better)
testFork(t, processor, length, 2, full, better)
testFork(t, processor, length, 5, full, better)
testFork(t, processor, length, 10, full, better)
}
// Tests that given a starting canonical chain of a given size, it can be extended
// with various length chains.
func TestExtendCanonicalHeadersAfterMerge(t *testing.T) { testExtendCanonicalAfterMerge(t, false) }
func TestExtendCanonicalBlocksAfterMerge(t *testing.T) { testExtendCanonicalAfterMerge(t, true) }
func testExtendCanonicalAfterMerge(t *testing.T, full bool) {
length := 5
// Make first chain starting from genesis
_, _, processor, err := newCanonical(ethash.NewFaker(), length, full)
if err != nil {
t.Fatalf("failed to make new canonical chain: %v", err)
}
defer processor.Stop()
testInsertAfterMerge(t, processor, length, 1, full)
testInsertAfterMerge(t, processor, length, 10, full)
}
// Tests that given a starting canonical chain of a given size, creating shorter
// forks do not take canonical ownership.
func TestShorterForkHeaders(t *testing.T) { testShorterFork(t, false) }
func TestShorterForkBlocks(t *testing.T) { testShorterFork(t, true) }
func testShorterFork(t *testing.T, full bool) {
length := 10
// Make first chain starting from genesis
_, _, processor, err := newCanonical(ethash.NewFaker(), length, full)
if err != nil {
t.Fatalf("failed to make new canonical chain: %v", err)
}
defer processor.Stop()
// Define the difficulty comparator
worse := func(td1, td2 *big.Int) {
if td2.Cmp(td1) >= 0 {
t.Errorf("total difficulty mismatch: have %v, expected less than %v", td2, td1)
}
}
// Sum of numbers must be less than `length` for this to be a shorter fork
testFork(t, processor, 0, 3, full, worse)
testFork(t, processor, 0, 7, full, worse)
testFork(t, processor, 1, 1, full, worse)
testFork(t, processor, 1, 7, full, worse)
testFork(t, processor, 5, 3, full, worse)
testFork(t, processor, 5, 4, full, worse)
}
// Tests that given a starting canonical chain of a given size, creating shorter
// forks do not take canonical ownership.
func TestShorterForkHeadersAfterMerge(t *testing.T) { testShorterForkAfterMerge(t, false) }
func TestShorterForkBlocksAfterMerge(t *testing.T) { testShorterForkAfterMerge(t, true) }
func testShorterForkAfterMerge(t *testing.T, full bool) {
length := 10
// Make first chain starting from genesis
_, _, processor, err := newCanonical(ethash.NewFaker(), length, full)
if err != nil {
t.Fatalf("failed to make new canonical chain: %v", err)
}
defer processor.Stop()
testInsertAfterMerge(t, processor, 0, 3, full)
testInsertAfterMerge(t, processor, 0, 7, full)
testInsertAfterMerge(t, processor, 1, 1, full)
testInsertAfterMerge(t, processor, 1, 7, full)
testInsertAfterMerge(t, processor, 5, 3, full)
testInsertAfterMerge(t, processor, 5, 4, full)
}
// Tests that given a starting canonical chain of a given size, creating longer
// forks do take canonical ownership.
func TestLongerForkHeaders(t *testing.T) { testLongerFork(t, false) }
func TestLongerForkBlocks(t *testing.T) { testLongerFork(t, true) }
func testLongerFork(t *testing.T, full bool) {
length := 10
// Make first chain starting from genesis
_, _, processor, err := newCanonical(ethash.NewFaker(), length, full)
if err != nil {
t.Fatalf("failed to make new canonical chain: %v", err)
}
defer processor.Stop()
testInsertAfterMerge(t, processor, 0, 11, full)
testInsertAfterMerge(t, processor, 0, 15, full)
testInsertAfterMerge(t, processor, 1, 10, full)
testInsertAfterMerge(t, processor, 1, 12, full)
testInsertAfterMerge(t, processor, 5, 6, full)
testInsertAfterMerge(t, processor, 5, 8, full)
}
// Tests that given a starting canonical chain of a given size, creating longer
// forks do take canonical ownership.
func TestLongerForkHeadersAfterMerge(t *testing.T) { testLongerForkAfterMerge(t, false) }
func TestLongerForkBlocksAfterMerge(t *testing.T) { testLongerForkAfterMerge(t, true) }
func testLongerForkAfterMerge(t *testing.T, full bool) {
length := 10
// Make first chain starting from genesis
_, _, processor, err := newCanonical(ethash.NewFaker(), length, full)
if err != nil {
t.Fatalf("failed to make new canonical chain: %v", err)
}
defer processor.Stop()
testInsertAfterMerge(t, processor, 0, 11, full)
testInsertAfterMerge(t, processor, 0, 15, full)
testInsertAfterMerge(t, processor, 1, 10, full)
testInsertAfterMerge(t, processor, 1, 12, full)
testInsertAfterMerge(t, processor, 5, 6, full)
testInsertAfterMerge(t, processor, 5, 8, full)
}
// Tests that given a starting canonical chain of a given size, creating equal
// forks do take canonical ownership.
func TestEqualForkHeaders(t *testing.T) { testEqualFork(t, false) }
func TestEqualForkBlocks(t *testing.T) { testEqualFork(t, true) }
func testEqualFork(t *testing.T, full bool) {
length := 10
// Make first chain starting from genesis
_, _, processor, err := newCanonical(ethash.NewFaker(), length, full)
if err != nil {
t.Fatalf("failed to make new canonical chain: %v", err)
}
defer processor.Stop()
// Define the difficulty comparator
equal := func(td1, td2 *big.Int) {
if td2.Cmp(td1) != 0 {
t.Errorf("total difficulty mismatch: have %v, want %v", td2, td1)
}
}
// Sum of numbers must be equal to `length` for this to be an equal fork
testFork(t, processor, 0, 10, full, equal)
testFork(t, processor, 1, 9, full, equal)
testFork(t, processor, 2, 8, full, equal)
testFork(t, processor, 5, 5, full, equal)
testFork(t, processor, 6, 4, full, equal)
testFork(t, processor, 9, 1, full, equal)
}
// Tests that given a starting canonical chain of a given size, creating equal
// forks do take canonical ownership.
func TestEqualForkHeadersAfterMerge(t *testing.T) { testEqualForkAfterMerge(t, false) }
func TestEqualForkBlocksAfterMerge(t *testing.T) { testEqualForkAfterMerge(t, true) }
func testEqualForkAfterMerge(t *testing.T, full bool) {
length := 10
// Make first chain starting from genesis
_, _, processor, err := newCanonical(ethash.NewFaker(), length, full)
if err != nil {
t.Fatalf("failed to make new canonical chain: %v", err)
}
defer processor.Stop()
testInsertAfterMerge(t, processor, 0, 10, full)
testInsertAfterMerge(t, processor, 1, 9, full)
testInsertAfterMerge(t, processor, 2, 8, full)
testInsertAfterMerge(t, processor, 5, 5, full)
testInsertAfterMerge(t, processor, 6, 4, full)
testInsertAfterMerge(t, processor, 9, 1, full)
}
// Tests that chains missing links do not get accepted by the processor.
func TestBrokenHeaderChain(t *testing.T) { testBrokenChain(t, false) }
func TestBrokenBlockChain(t *testing.T) { testBrokenChain(t, true) }
func testBrokenChain(t *testing.T, full bool) {
// Make chain starting from genesis
genDb, _, blockchain, err := newCanonical(ethash.NewFaker(), 10, full)
if err != nil {
t.Fatalf("failed to make new canonical chain: %v", err)
}
defer blockchain.Stop()
// Create a forked chain, and try to insert with a missing link
if full {
chain := makeBlockChain(blockchain.chainConfig, blockchain.GetBlockByHash(blockchain.CurrentBlock().Hash()), 5, ethash.NewFaker(), genDb, forkSeed)[1:]
if err := testBlockChainImport(chain, blockchain); err == nil {
t.Errorf("broken block chain not reported")
}
} else {
chain := makeHeaderChain(blockchain.chainConfig, blockchain.CurrentHeader(), 5, ethash.NewFaker(), genDb, forkSeed)[1:]
if err := testHeaderChainImport(chain, blockchain); err == nil {
t.Errorf("broken header chain not reported")
}
}
}
// Tests that reorganising a long difficult chain after a short easy one
// overwrites the canonical numbers and links in the database.
func TestReorgLongHeaders(t *testing.T) { testReorgLong(t, false) }
func TestReorgLongBlocks(t *testing.T) { testReorgLong(t, true) }
func testReorgLong(t *testing.T, full bool) {
testReorg(t, []int64{0, 0, -9}, []int64{0, 0, 0, -9}, 393280+params.GenesisDifficulty.Int64(), full)
}
// Tests that reorganising a short difficult chain after a long easy one
// overwrites the canonical numbers and links in the database.
func TestReorgShortHeaders(t *testing.T) { testReorgShort(t, false) }
func TestReorgShortBlocks(t *testing.T) { testReorgShort(t, true) }
func testReorgShort(t *testing.T, full bool) {
// Create a long easy chain vs. a short heavy one. Due to difficulty adjustment
// we need a fairly long chain of blocks with different difficulties for a short
// one to become heavier than a long one. The 96 is an empirical value.
easy := make([]int64, 96)
for i := 0; i < len(easy); i++ {
easy[i] = 60
}
diff := make([]int64, len(easy)-1)
for i := 0; i < len(diff); i++ {
diff[i] = -9
}
testReorg(t, easy, diff, 12615120+params.GenesisDifficulty.Int64(), full)
}
func testReorg(t *testing.T, first, second []int64, td int64, full bool) {
// Create a pristine chain and database
genDb, _, blockchain, err := newCanonical(ethash.NewFaker(), 0, full)
if err != nil {
t.Fatalf("failed to create pristine chain: %v", err)
}
defer blockchain.Stop()
// Insert an easy and a difficult chain afterwards
easyBlocks, _ := GenerateChain(params.TestChainConfig, blockchain.GetBlockByHash(blockchain.CurrentBlock().Hash()), ethash.NewFaker(), genDb, len(first), func(i int, b *BlockGen) {
b.OffsetTime(first[i])
})
diffBlocks, _ := GenerateChain(params.TestChainConfig, blockchain.GetBlockByHash(blockchain.CurrentBlock().Hash()), ethash.NewFaker(), genDb, len(second), func(i int, b *BlockGen) {
b.OffsetTime(second[i])
})
if full {
if _, err := blockchain.InsertChain(easyBlocks); err != nil {
t.Fatalf("failed to insert easy chain: %v", err)
}
if _, err := blockchain.InsertChain(diffBlocks); err != nil {
t.Fatalf("failed to insert difficult chain: %v", err)
}
} else {
easyHeaders := make([]*types.Header, len(easyBlocks))
for i, block := range easyBlocks {
easyHeaders[i] = block.Header()
}
diffHeaders := make([]*types.Header, len(diffBlocks))
for i, block := range diffBlocks {
diffHeaders[i] = block.Header()
}
if _, err := blockchain.InsertHeaderChain(easyHeaders); err != nil {
t.Fatalf("failed to insert easy chain: %v", err)
}
if _, err := blockchain.InsertHeaderChain(diffHeaders); err != nil {
t.Fatalf("failed to insert difficult chain: %v", err)
}
}
// Check that the chain is valid number and link wise
if full {
prev := blockchain.CurrentBlock()
for block := blockchain.GetBlockByNumber(blockchain.CurrentBlock().Number.Uint64() - 1); block.NumberU64() != 0; prev, block = block.Header(), blockchain.GetBlockByNumber(block.NumberU64()-1) {
if prev.ParentHash != block.Hash() {
t.Errorf("parent block hash mismatch: have %x, want %x", prev.ParentHash, block.Hash())
}
}
} else {
prev := blockchain.CurrentHeader()
for header := blockchain.GetHeaderByNumber(blockchain.CurrentHeader().Number.Uint64() - 1); header.Number.Uint64() != 0; prev, header = header, blockchain.GetHeaderByNumber(header.Number.Uint64()-1) {
if prev.ParentHash != header.Hash() {
t.Errorf("parent header hash mismatch: have %x, want %x", prev.ParentHash, header.Hash())
}
}
}
// Make sure the chain total difficulty is the correct one
want := new(big.Int).Add(blockchain.genesisBlock.Difficulty(), big.NewInt(td))
if full {
cur := blockchain.CurrentBlock()
if have := blockchain.GetTd(cur.Hash(), cur.Number.Uint64()); have.Cmp(want) != 0 {
t.Errorf("total difficulty mismatch: have %v, want %v", have, want)
}
} else {
cur := blockchain.CurrentHeader()
if have := blockchain.GetTd(cur.Hash(), cur.Number.Uint64()); have.Cmp(want) != 0 {
t.Errorf("total difficulty mismatch: have %v, want %v", have, want)
}
}
}
// Tests that the insertion functions detect banned hashes.
func TestBadHeaderHashes(t *testing.T) { testBadHashes(t, false) }
func TestBadBlockHashes(t *testing.T) { testBadHashes(t, true) }
func testBadHashes(t *testing.T, full bool) {
// Create a pristine chain and database
genDb, _, blockchain, err := newCanonical(ethash.NewFaker(), 0, full)
if err != nil {
t.Fatalf("failed to create pristine chain: %v", err)
}
defer blockchain.Stop()
// Create a chain, ban a hash and try to import
if full {
blocks := makeBlockChain(blockchain.chainConfig, blockchain.GetBlockByHash(blockchain.CurrentBlock().Hash()), 3, ethash.NewFaker(), genDb, 10)
BadHashes[blocks[2].Header().Hash()] = true
defer func() { delete(BadHashes, blocks[2].Header().Hash()) }()
_, err = blockchain.InsertChain(blocks)
} else {
headers := makeHeaderChain(blockchain.chainConfig, blockchain.CurrentHeader(), 3, ethash.NewFaker(), genDb, 10)
BadHashes[headers[2].Hash()] = true
defer func() { delete(BadHashes, headers[2].Hash()) }()
_, err = blockchain.InsertHeaderChain(headers)
}
if !errors.Is(err, ErrBannedHash) {
t.Errorf("error mismatch: have: %v, want: %v", err, ErrBannedHash)
}
}
// Tests that bad hashes are detected on boot, and the chain rolled back to a
// good state prior to the bad hash.
func TestReorgBadHeaderHashes(t *testing.T) { testReorgBadHashes(t, false) }
func TestReorgBadBlockHashes(t *testing.T) { testReorgBadHashes(t, true) }
func testReorgBadHashes(t *testing.T, full bool) {
// Create a pristine chain and database
genDb, gspec, blockchain, err := newCanonical(ethash.NewFaker(), 0, full)
if err != nil {
t.Fatalf("failed to create pristine chain: %v", err)
}
// Create a chain, import and ban afterwards
headers := makeHeaderChain(blockchain.chainConfig, blockchain.CurrentHeader(), 4, ethash.NewFaker(), genDb, 10)
blocks := makeBlockChain(blockchain.chainConfig, blockchain.GetBlockByHash(blockchain.CurrentBlock().Hash()), 4, ethash.NewFaker(), genDb, 10)
if full {
if _, err = blockchain.InsertChain(blocks); err != nil {
t.Errorf("failed to import blocks: %v", err)
}
if blockchain.CurrentBlock().Hash() != blocks[3].Hash() {
t.Errorf("last block hash mismatch: have: %x, want %x", blockchain.CurrentBlock().Hash(), blocks[3].Header().Hash())
}
BadHashes[blocks[3].Header().Hash()] = true
defer func() { delete(BadHashes, blocks[3].Header().Hash()) }()
} else {
if _, err = blockchain.InsertHeaderChain(headers); err != nil {
t.Errorf("failed to import headers: %v", err)
}
if blockchain.CurrentHeader().Hash() != headers[3].Hash() {
t.Errorf("last header hash mismatch: have: %x, want %x", blockchain.CurrentHeader().Hash(), headers[3].Hash())
}
BadHashes[headers[3].Hash()] = true
defer func() { delete(BadHashes, headers[3].Hash()) }()
}
blockchain.Stop()
// Create a new BlockChain and check that it rolled back the state.
ncm, err := NewBlockChain(blockchain.db, nil, gspec, nil, ethash.NewFaker(), vm.Config{}, nil, nil)
if err != nil {
t.Fatalf("failed to create new chain manager: %v", err)
}
if full {
if ncm.CurrentBlock().Hash() != blocks[2].Header().Hash() {
t.Errorf("last block hash mismatch: have: %x, want %x", ncm.CurrentBlock().Hash(), blocks[2].Header().Hash())
}
if blocks[2].Header().GasLimit != ncm.GasLimit() {
t.Errorf("last block gasLimit mismatch: have: %d, want %d", ncm.GasLimit(), blocks[2].Header().GasLimit)
}
} else {
if ncm.CurrentHeader().Hash() != headers[2].Hash() {
t.Errorf("last header hash mismatch: have: %x, want %x", ncm.CurrentHeader().Hash(), headers[2].Hash())
}
}
ncm.Stop()
}
// Tests chain insertions in the face of one entity containing an invalid nonce.
func TestHeadersInsertNonceError(t *testing.T) { testInsertNonceError(t, false) }
func TestBlocksInsertNonceError(t *testing.T) { testInsertNonceError(t, true) }
func testInsertNonceError(t *testing.T, full bool) {
doTest := func(i int) {
// Create a pristine chain and database
genDb, _, blockchain, err := newCanonical(ethash.NewFaker(), 0, full)
if err != nil {
t.Fatalf("failed to create pristine chain: %v", err)
}
defer blockchain.Stop()
// Create and insert a chain with a failing nonce
var (
failAt int
failRes int
failNum uint64
)
if full {
blocks := makeBlockChain(blockchain.chainConfig, blockchain.GetBlockByHash(blockchain.CurrentBlock().Hash()), i, ethash.NewFaker(), genDb, 0)
failAt = rand.Int() % len(blocks)
failNum = blocks[failAt].NumberU64()
blockchain.engine = ethash.NewFakeFailer(failNum)
failRes, err = blockchain.InsertChain(blocks)
} else {
headers := makeHeaderChain(blockchain.chainConfig, blockchain.CurrentHeader(), i, ethash.NewFaker(), genDb, 0)
failAt = rand.Int() % len(headers)
failNum = headers[failAt].Number.Uint64()
blockchain.engine = ethash.NewFakeFailer(failNum)
blockchain.hc.engine = blockchain.engine
failRes, err = blockchain.InsertHeaderChain(headers)
}
// Check that the returned error indicates the failure
if failRes != failAt {
t.Errorf("test %d: failure (%v) index mismatch: have %d, want %d", i, err, failRes, failAt)
}
// Check that all blocks after the failing block have been inserted
for j := 0; j < i-failAt; j++ {
if full {
if block := blockchain.GetBlockByNumber(failNum + uint64(j)); block != nil {
t.Errorf("test %d: invalid block in chain: %v", i, block)
}
} else {
if header := blockchain.GetHeaderByNumber(failNum + uint64(j)); header != nil {
t.Errorf("test %d: invalid header in chain: %v", i, header)
}
}
}
}
for i := 1; i < 25 && !t.Failed(); i++ {
doTest(i)
}
}
// Tests that fast importing a block chain produces the same chain data as the
// classical full block processing.
func TestFastVsFullChains(t *testing.T) {
// Configure and generate a sample block chain
var (
key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
address = crypto.PubkeyToAddress(key.PublicKey)
funds = big.NewInt(1000000000000000)
gspec = &Genesis{
Config: params.TestChainConfig,
Alloc: GenesisAlloc{address: {Balance: funds}},
BaseFee: big.NewInt(params.InitialBaseFee),
}
signer = types.LatestSigner(gspec.Config)
)
_, blocks, receipts := GenerateChainWithGenesis(gspec, ethash.NewFaker(), 1024, func(i int, block *BlockGen) {
block.SetCoinbase(common.Address{0x00})
// If the block number is multiple of 3, send a few bonus transactions to the miner
if i%3 == 2 {
for j := 0; j < i%4+1; j++ {
tx, err := types.SignTx(types.NewTransaction(block.TxNonce(address), common.Address{0x00}, big.NewInt(1000), params.TxGas, block.header.BaseFee, nil), signer, key)
if err != nil {
panic(err)
}
block.AddTx(tx)
}
}
// If the block number is a multiple of 5, add an uncle to the block
if i%5 == 4 {
block.AddUncle(&types.Header{ParentHash: block.PrevBlock(i - 2).Hash(), Number: big.NewInt(int64(i))})
}
})
// Import the chain as an archive node for the comparison baseline
archiveDb := rawdb.NewMemoryDatabase()
archive, _ := NewBlockChain(archiveDb, nil, gspec, nil, ethash.NewFaker(), vm.Config{}, nil, nil)
defer archive.Stop()
if n, err := archive.InsertChain(blocks); err != nil {
t.Fatalf("failed to process block %d: %v", n, err)
}
// Fast import the chain as a non-archive node to test
fastDb := rawdb.NewMemoryDatabase()
fast, _ := NewBlockChain(fastDb, nil, gspec, nil, ethash.NewFaker(), vm.Config{}, nil, nil)
defer fast.Stop()
headers := make([]*types.Header, len(blocks))
for i, block := range blocks {
headers[i] = block.Header()
}
if n, err := fast.InsertHeaderChain(headers); err != nil {
t.Fatalf("failed to insert header %d: %v", n, err)
}
if n, err := fast.InsertReceiptChain(blocks, receipts, 0); err != nil {
t.Fatalf("failed to insert receipt %d: %v", n, err)
}
// Freezer style fast import the chain.
ancientDb, err := rawdb.NewDatabaseWithFreezer(rawdb.NewMemoryDatabase(), t.TempDir(), "", false)
if err != nil {
t.Fatalf("failed to create temp freezer db: %v", err)
}
defer ancientDb.Close()
ancient, _ := NewBlockChain(ancientDb, nil, gspec, nil, ethash.NewFaker(), vm.Config{}, nil, nil)
defer ancient.Stop()
if n, err := ancient.InsertHeaderChain(headers); err != nil {
t.Fatalf("failed to insert header %d: %v", n, err)
}
if n, err := ancient.InsertReceiptChain(blocks, receipts, uint64(len(blocks)/2)); err != nil {
t.Fatalf("failed to insert receipt %d: %v", n, err)
}
// Iterate over all chain data components, and cross reference
for i := 0; i < len(blocks); i++ {
num, hash, time := blocks[i].NumberU64(), blocks[i].Hash(), blocks[i].Time()
if ftd, atd := fast.GetTd(hash, num), archive.GetTd(hash, num); ftd.Cmp(atd) != 0 {
t.Errorf("block #%d [%x]: td mismatch: fastdb %v, archivedb %v", num, hash, ftd, atd)
}
if antd, artd := ancient.GetTd(hash, num), archive.GetTd(hash, num); antd.Cmp(artd) != 0 {
t.Errorf("block #%d [%x]: td mismatch: ancientdb %v, archivedb %v", num, hash, antd, artd)
}
if fheader, aheader := fast.GetHeaderByHash(hash), archive.GetHeaderByHash(hash); fheader.Hash() != aheader.Hash() {
t.Errorf("block #%d [%x]: header mismatch: fastdb %v, archivedb %v", num, hash, fheader, aheader)
}
if anheader, arheader := ancient.GetHeaderByHash(hash), archive.GetHeaderByHash(hash); anheader.Hash() != arheader.Hash() {
t.Errorf("block #%d [%x]: header mismatch: ancientdb %v, archivedb %v", num, hash, anheader, arheader)
}
if fblock, arblock, anblock := fast.GetBlockByHash(hash), archive.GetBlockByHash(hash), ancient.GetBlockByHash(hash); fblock.Hash() != arblock.Hash() || anblock.Hash() != arblock.Hash() {
t.Errorf("block #%d [%x]: block mismatch: fastdb %v, ancientdb %v, archivedb %v", num, hash, fblock, anblock, arblock)
} else if types.DeriveSha(fblock.Transactions(), trie.NewStackTrie(nil)) != types.DeriveSha(arblock.Transactions(), trie.NewStackTrie(nil)) || types.DeriveSha(anblock.Transactions(), trie.NewStackTrie(nil)) != types.DeriveSha(arblock.Transactions(), trie.NewStackTrie(nil)) {
t.Errorf("block #%d [%x]: transactions mismatch: fastdb %v, ancientdb %v, archivedb %v", num, hash, fblock.Transactions(), anblock.Transactions(), arblock.Transactions())
} else if types.CalcUncleHash(fblock.Uncles()) != types.CalcUncleHash(arblock.Uncles()) || types.CalcUncleHash(anblock.Uncles()) != types.CalcUncleHash(arblock.Uncles()) {
t.Errorf("block #%d [%x]: uncles mismatch: fastdb %v, ancientdb %v, archivedb %v", num, hash, fblock.Uncles(), anblock, arblock.Uncles())
}
// Check receipts.
freceipts := rawdb.ReadReceipts(fastDb, hash, num, time, fast.Config())
anreceipts := rawdb.ReadReceipts(ancientDb, hash, num, time, fast.Config())
areceipts := rawdb.ReadReceipts(archiveDb, hash, num, time, fast.Config())
if types.DeriveSha(freceipts, trie.NewStackTrie(nil)) != types.DeriveSha(areceipts, trie.NewStackTrie(nil)) {
t.Errorf("block #%d [%x]: receipts mismatch: fastdb %v, ancientdb %v, archivedb %v", num, hash, freceipts, anreceipts, areceipts)
}
// Check that hash-to-number mappings are present in all databases.
if m := rawdb.ReadHeaderNumber(fastDb, hash); m == nil || *m != num {
t.Errorf("block #%d [%x]: wrong hash-to-number mapping in fastdb: %v", num, hash, m)
}
if m := rawdb.ReadHeaderNumber(ancientDb, hash); m == nil || *m != num {
t.Errorf("block #%d [%x]: wrong hash-to-number mapping in ancientdb: %v", num, hash, m)
}
if m := rawdb.ReadHeaderNumber(archiveDb, hash); m == nil || *m != num {
t.Errorf("block #%d [%x]: wrong hash-to-number mapping in archivedb: %v", num, hash, m)
}
}
// Check that the canonical chains are the same between the databases
for i := 0; i < len(blocks)+1; i++ {
if fhash, ahash := rawdb.ReadCanonicalHash(fastDb, uint64(i)), rawdb.ReadCanonicalHash(archiveDb, uint64(i)); fhash != ahash {
t.Errorf("block #%d: canonical hash mismatch: fastdb %v, archivedb %v", i, fhash, ahash)
}
if anhash, arhash := rawdb.ReadCanonicalHash(ancientDb, uint64(i)), rawdb.ReadCanonicalHash(archiveDb, uint64(i)); anhash != arhash {
t.Errorf("block #%d: canonical hash mismatch: ancientdb %v, archivedb %v", i, anhash, arhash)
}
}
}
// Tests that various import methods move the chain head pointers to the correct
// positions.
func TestLightVsFastVsFullChainHeads(t *testing.T) {
// Configure and generate a sample block chain
var (
key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
address = crypto.PubkeyToAddress(key.PublicKey)
funds = big.NewInt(1000000000000000)
gspec = &Genesis{
Config: params.TestChainConfig,
Alloc: GenesisAlloc{address: {Balance: funds}},
BaseFee: big.NewInt(params.InitialBaseFee),
}
)
height := uint64(1024)
_, blocks, receipts := GenerateChainWithGenesis(gspec, ethash.NewFaker(), int(height), nil)
// makeDb creates a db instance for testing.
makeDb := func() ethdb.Database {
db, err := rawdb.NewDatabaseWithFreezer(rawdb.NewMemoryDatabase(), t.TempDir(), "", false)
if err != nil {
t.Fatalf("failed to create temp freezer db: %v", err)
}
return db
}
// Configure a subchain to roll back
remove := blocks[height/2].NumberU64()
// Create a small assertion method to check the three heads
assert := func(t *testing.T, kind string, chain *BlockChain, header uint64, fast uint64, block uint64) {
t.Helper()
if num := chain.CurrentBlock().Number.Uint64(); num != block {
t.Errorf("%s head block mismatch: have #%v, want #%v", kind, num, block)
}
if num := chain.CurrentSnapBlock().Number.Uint64(); num != fast {
t.Errorf("%s head snap-block mismatch: have #%v, want #%v", kind, num, fast)
}
if num := chain.CurrentHeader().Number.Uint64(); num != header {
t.Errorf("%s head header mismatch: have #%v, want #%v", kind, num, header)
}
}
// Import the chain as an archive node and ensure all pointers are updated
archiveDb := makeDb()
defer archiveDb.Close()
archiveCaching := *defaultCacheConfig
archiveCaching.TrieDirtyDisabled = true
archive, _ := NewBlockChain(archiveDb, &archiveCaching, gspec, nil, ethash.NewFaker(), vm.Config{}, nil, nil)
if n, err := archive.InsertChain(blocks); err != nil {
t.Fatalf("failed to process block %d: %v", n, err)
}
defer archive.Stop()
assert(t, "archive", archive, height, height, height)
archive.SetHead(remove - 1)
assert(t, "archive", archive, height/2, height/2, height/2)
// Import the chain as a non-archive node and ensure all pointers are updated
fastDb := makeDb()
defer fastDb.Close()
fast, _ := NewBlockChain(fastDb, nil, gspec, nil, ethash.NewFaker(), vm.Config{}, nil, nil)
defer fast.Stop()
headers := make([]*types.Header, len(blocks))
for i, block := range blocks {
headers[i] = block.Header()
}
if n, err := fast.InsertHeaderChain(headers); err != nil {
t.Fatalf("failed to insert header %d: %v", n, err)
}
if n, err := fast.InsertReceiptChain(blocks, receipts, 0); err != nil {
t.Fatalf("failed to insert receipt %d: %v", n, err)
}
assert(t, "fast", fast, height, height, 0)
fast.SetHead(remove - 1)
assert(t, "fast", fast, height/2, height/2, 0)
// Import the chain as a ancient-first node and ensure all pointers are updated
ancientDb := makeDb()
defer ancientDb.Close()
ancient, _ := NewBlockChain(ancientDb, nil, gspec, nil, ethash.NewFaker(), vm.Config{}, nil, nil)
defer ancient.Stop()
if n, err := ancient.InsertHeaderChain(headers); err != nil {
t.Fatalf("failed to insert header %d: %v", n, err)
}
if n, err := ancient.InsertReceiptChain(blocks, receipts, uint64(3*len(blocks)/4)); err != nil {
t.Fatalf("failed to insert receipt %d: %v", n, err)
}
assert(t, "ancient", ancient, height, height, 0)
ancient.SetHead(remove - 1)
assert(t, "ancient", ancient, 0, 0, 0)
if frozen, err := ancientDb.Ancients(); err != nil || frozen != 1 {
t.Fatalf("failed to truncate ancient store, want %v, have %v", 1, frozen)
}
// Import the chain as a light node and ensure all pointers are updated
lightDb := makeDb()
defer lightDb.Close()
light, _ := NewBlockChain(lightDb, nil, gspec, nil, ethash.NewFaker(), vm.Config{}, nil, nil)
if n, err := light.InsertHeaderChain(headers); err != nil {
t.Fatalf("failed to insert header %d: %v", n, err)
}
defer light.Stop()
assert(t, "light", light, height, 0, 0)
light.SetHead(remove - 1)
assert(t, "light", light, height/2, 0, 0)
}
// Tests that chain reorganisations handle transaction removals and reinsertions.
func TestChainTxReorgs(t *testing.T) {
var (
key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a")
key3, _ = crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee")
addr1 = crypto.PubkeyToAddress(key1.PublicKey)
addr2 = crypto.PubkeyToAddress(key2.PublicKey)
addr3 = crypto.PubkeyToAddress(key3.PublicKey)
gspec = &Genesis{
Config: params.TestChainConfig,
GasLimit: 3141592,
Alloc: GenesisAlloc{
addr1: {Balance: big.NewInt(1000000000000000)},
addr2: {Balance: big.NewInt(1000000000000000)},
addr3: {Balance: big.NewInt(1000000000000000)},
},
}
signer = types.LatestSigner(gspec.Config)
)
// Create two transactions shared between the chains:
// - postponed: transaction included at a later block in the forked chain
// - swapped: transaction included at the same block number in the forked chain