Official Go implementation of the Ethereum protocol
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go-ethereum/les/catalyst/api_test.go

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// Copyright 2022 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package catalyst
import (
"math/big"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/beacon"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth/downloader"
"github.com/ethereum/go-ethereum/eth/ethconfig"
"github.com/ethereum/go-ethereum/les"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/trie"
)
var (
// testKey is a private key to use for funding a tester account.
testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
// testAddr is the Ethereum address of the tester account.
testAddr = crypto.PubkeyToAddress(testKey.PublicKey)
testBalance = big.NewInt(2e18)
)
func generatePreMergeChain(n int) (*core.Genesis, []*types.Header, []*types.Block) {
db := rawdb.NewMemoryDatabase()
config := params.AllEthashProtocolChanges
genesis := &core.Genesis{
Config: config,
Alloc: core.GenesisAlloc{testAddr: {Balance: testBalance}},
ExtraData: []byte("test genesis"),
Timestamp: 9000,
BaseFee: big.NewInt(params.InitialBaseFee),
}
gblock := genesis.MustCommit(db)
engine := ethash.NewFaker()
blocks, _ := core.GenerateChain(config, gblock, engine, db, n, nil)
totalDifficulty := big.NewInt(0)
var headers []*types.Header
for _, b := range blocks {
totalDifficulty.Add(totalDifficulty, b.Difficulty())
headers = append(headers, b.Header())
}
config.TerminalTotalDifficulty = totalDifficulty
return genesis, headers, blocks
}
func TestSetHeadBeforeTotalDifficulty(t *testing.T) {
genesis, headers, blocks := generatePreMergeChain(10)
n, lesService := startLesService(t, genesis, headers)
defer n.Close()
api := NewConsensusAPI(lesService)
fcState := beacon.ForkchoiceStateV1{
HeadBlockHash: blocks[5].Hash(),
SafeBlockHash: common.Hash{},
FinalizedBlockHash: common.Hash{},
}
if _, err := api.ForkchoiceUpdatedV1(fcState, nil); err == nil {
t.Errorf("fork choice updated before total terminal difficulty should fail")
}
}
func TestExecutePayloadV1(t *testing.T) {
genesis, headers, blocks := generatePreMergeChain(10)
n, lesService := startLesService(t, genesis, headers[:9])
lesService.Merger().ReachTTD()
defer n.Close()
api := NewConsensusAPI(lesService)
fcState := beacon.ForkchoiceStateV1{
HeadBlockHash: blocks[8].Hash(),
SafeBlockHash: common.Hash{},
FinalizedBlockHash: common.Hash{},
}
if _, err := api.ForkchoiceUpdatedV1(fcState, nil); err != nil {
t.Errorf("Failed to update head %v", err)
}
block := blocks[9]
fakeBlock := types.NewBlock(&types.Header{
ParentHash: block.ParentHash(),
UncleHash: crypto.Keccak256Hash(nil),
Coinbase: block.Coinbase(),
Root: block.Root(),
TxHash: crypto.Keccak256Hash(nil),
ReceiptHash: crypto.Keccak256Hash(nil),
Bloom: block.Bloom(),
Difficulty: big.NewInt(0),
Number: block.Number(),
GasLimit: block.GasLimit(),
GasUsed: block.GasUsed(),
Time: block.Time(),
Extra: block.Extra(),
MixDigest: block.MixDigest(),
Nonce: types.BlockNonce{},
BaseFee: block.BaseFee(),
}, nil, nil, nil, trie.NewStackTrie(nil))
_, err := api.ExecutePayloadV1(beacon.ExecutableDataV1{
ParentHash: fakeBlock.ParentHash(),
FeeRecipient: fakeBlock.Coinbase(),
StateRoot: fakeBlock.Root(),
ReceiptsRoot: fakeBlock.ReceiptHash(),
LogsBloom: fakeBlock.Bloom().Bytes(),
Random: fakeBlock.MixDigest(),
Number: fakeBlock.NumberU64(),
GasLimit: fakeBlock.GasLimit(),
GasUsed: fakeBlock.GasUsed(),
Timestamp: fakeBlock.Time(),
ExtraData: fakeBlock.Extra(),
BaseFeePerGas: fakeBlock.BaseFee(),
BlockHash: fakeBlock.Hash(),
Transactions: encodeTransactions(fakeBlock.Transactions()),
})
if err != nil {
t.Errorf("Failed to execute payload %v", err)
}
headHeader := api.les.BlockChain().CurrentHeader()
if headHeader.Number.Uint64() != fakeBlock.NumberU64()-1 {
t.Fatal("Unexpected chain head update")
}
fcState = beacon.ForkchoiceStateV1{
HeadBlockHash: fakeBlock.Hash(),
SafeBlockHash: common.Hash{},
FinalizedBlockHash: common.Hash{},
}
if _, err := api.ForkchoiceUpdatedV1(fcState, nil); err != nil {
t.Fatal("Failed to update head")
}
headHeader = api.les.BlockChain().CurrentHeader()
if headHeader.Number.Uint64() != fakeBlock.NumberU64() {
t.Fatal("Failed to update chain head")
}
}
func TestEth2DeepReorg(t *testing.T) {
// TODO (MariusVanDerWijden) TestEth2DeepReorg is currently broken, because it tries to reorg
// before the totalTerminalDifficulty threshold
/*
genesis, preMergeBlocks := generatePreMergeChain(core.TriesInMemory * 2)
n, ethservice := startEthService(t, genesis, preMergeBlocks)
defer n.Close()
var (
api = NewConsensusAPI(ethservice, nil)
parent = preMergeBlocks[len(preMergeBlocks)-core.TriesInMemory-1]
head = ethservice.BlockChain().CurrentBlock().NumberU64()
)
if ethservice.BlockChain().HasBlockAndState(parent.Hash(), parent.NumberU64()) {
t.Errorf("Block %d not pruned", parent.NumberU64())
}
for i := 0; i < 10; i++ {
execData, err := api.assembleBlock(AssembleBlockParams{
ParentHash: parent.Hash(),
Timestamp: parent.Time() + 5,
})
if err != nil {
t.Fatalf("Failed to create the executable data %v", err)
}
block, err := ExecutableDataToBlock(ethservice.BlockChain().Config(), parent.Header(), *execData)
if err != nil {
t.Fatalf("Failed to convert executable data to block %v", err)
}
newResp, err := api.ExecutePayload(*execData)
if err != nil || newResp.Status != "VALID" {
t.Fatalf("Failed to insert block: %v", err)
}
if ethservice.BlockChain().CurrentBlock().NumberU64() != head {
t.Fatalf("Chain head shouldn't be updated")
}
if err := api.setCanonical(block.Hash()); err != nil {
t.Fatalf("Failed to set head: %v", err)
}
if ethservice.BlockChain().CurrentBlock().NumberU64() != block.NumberU64() {
t.Fatalf("Chain head should be updated")
}
parent, head = block, block.NumberU64()
}
*/
}
// startEthService creates a full node instance for testing.
func startLesService(t *testing.T, genesis *core.Genesis, headers []*types.Header) (*node.Node, *les.LightEthereum) {
t.Helper()
n, err := node.New(&node.Config{})
if err != nil {
t.Fatal("can't create node:", err)
}
ethcfg := &ethconfig.Config{
Genesis: genesis,
Ethash: ethash.Config{PowMode: ethash.ModeFake},
SyncMode: downloader.LightSync,
TrieDirtyCache: 256,
TrieCleanCache: 256,
LightPeers: 10,
}
lesService, err := les.New(n, ethcfg)
if err != nil {
t.Fatal("can't create eth service:", err)
}
if err := n.Start(); err != nil {
t.Fatal("can't start node:", err)
}
if _, err := lesService.BlockChain().InsertHeaderChain(headers, 0); err != nil {
n.Close()
t.Fatal("can't import test headers:", err)
}
return n, lesService
}
func encodeTransactions(txs []*types.Transaction) [][]byte {
var enc = make([][]byte, len(txs))
for i, tx := range txs {
enc[i], _ = tx.MarshalBinary()
}
return enc
}