193 lines
6.8 KiB
Go
193 lines
6.8 KiB
Go
// Copyright 2015 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 diff
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import (
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"math/big"
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"math/rand"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/consensus/ethash"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/p2p/enode"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/rlp"
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)
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var (
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// testKey is a private key to use for funding a tester account.
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testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
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// testAddr is the Ethereum address of the tester account.
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testAddr = crypto.PubkeyToAddress(testKey.PublicKey)
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)
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// testBackend is a mock implementation of the live Ethereum message handler. Its
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// purpose is to allow testing the request/reply workflows and wire serialization
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// in the `eth` protocol without actually doing any data processing.
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type testBackend struct {
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db ethdb.Database
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chain *core.BlockChain
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txpool *core.TxPool
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}
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// newTestBackend creates an empty chain and wraps it into a mock backend.
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func newTestBackend(blocks int) *testBackend {
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return newTestBackendWithGenerator(blocks)
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}
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// newTestBackend creates a chain with a number of explicitly defined blocks and
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// wraps it into a mock backend.
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func newTestBackendWithGenerator(blocks int) *testBackend {
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signer := types.HomesteadSigner{}
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// Create a database pre-initialize with a genesis block
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db := rawdb.NewMemoryDatabase()
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(&core.Genesis{
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Config: params.TestChainConfig,
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Alloc: core.GenesisAlloc{testAddr: {Balance: big.NewInt(100000000000000000)}},
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}).MustCommit(db)
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chain, _ := core.NewBlockChain(db, nil, params.TestChainConfig, ethash.NewFaker(), vm.Config{}, nil, nil)
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generator := func(i int, block *core.BlockGen) {
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// The chain maker doesn't have access to a chain, so the difficulty will be
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// lets unset (nil). Set it here to the correct value.
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block.SetCoinbase(testAddr)
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// We want to simulate an empty middle block, having the same state as the
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// first one. The last is needs a state change again to force a reorg.
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tx, err := types.SignTx(types.NewTransaction(block.TxNonce(testAddr), common.Address{0x01}, big.NewInt(1), params.TxGas, big.NewInt(params.InitialBaseFee), nil), signer, testKey)
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if err != nil {
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panic(err)
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}
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block.AddTxWithChain(chain, tx)
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}
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bs, _ := core.GenerateChain(params.TestChainConfig, chain.Genesis(), ethash.NewFaker(), db, blocks, generator)
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if _, err := chain.InsertChain(bs); err != nil {
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panic(err)
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}
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txconfig := core.DefaultTxPoolConfig
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txconfig.Journal = "" // Don't litter the disk with test journals
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return &testBackend{
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db: db,
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chain: chain,
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txpool: core.NewTxPool(txconfig, params.TestChainConfig, chain),
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}
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}
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// close tears down the transaction pool and chain behind the mock backend.
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func (b *testBackend) close() {
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b.txpool.Stop()
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b.chain.Stop()
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}
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func (b *testBackend) Chain() *core.BlockChain { return b.chain }
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func (b *testBackend) RunPeer(peer *Peer, handler Handler) error {
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// Normally the backend would do peer mainentance and handshakes. All that
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// is omitted and we will just give control back to the handler.
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return handler(peer)
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}
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func (b *testBackend) PeerInfo(enode.ID) interface{} { panic("not implemented") }
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func (b *testBackend) Handle(*Peer, Packet) error {
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panic("data processing tests should be done in the handler package")
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}
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func TestGetDiffLayers(t *testing.T) { testGetDiffLayers(t, Diff1) }
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func testGetDiffLayers(t *testing.T, protocol uint) {
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t.Parallel()
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blockNum := 2048
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backend := newTestBackend(blockNum)
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defer backend.close()
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peer, _ := newTestPeer("peer", protocol, backend)
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defer peer.close()
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foundDiffBlockHashes := make([]common.Hash, 0)
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foundDiffPackets := make([]FullDiffLayersPacket, 0)
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foundDiffRlps := make([]rlp.RawValue, 0)
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missDiffBlockHashes := make([]common.Hash, 0)
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missDiffPackets := make([]FullDiffLayersPacket, 0)
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for i := 0; i < 100; i++ {
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number := uint64(rand.Int63n(1024))
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if number == 0 {
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continue
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}
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foundHash := backend.chain.GetCanonicalHash(number + 1024)
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missHash := backend.chain.GetCanonicalHash(number)
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foundRlp := backend.chain.GetDiffLayerRLP(foundHash)
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if len(foundHash) == 0 {
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t.Fatalf("Faild to fond rlp encoded diff layer %v", foundHash)
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}
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foundDiffPackets = append(foundDiffPackets, FullDiffLayersPacket{
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RequestId: uint64(i),
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DiffLayersPacket: []rlp.RawValue{foundRlp},
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})
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foundDiffRlps = append(foundDiffRlps, foundRlp)
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missDiffPackets = append(missDiffPackets, FullDiffLayersPacket{
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RequestId: uint64(i),
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DiffLayersPacket: []rlp.RawValue{},
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})
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missDiffBlockHashes = append(missDiffBlockHashes, missHash)
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foundDiffBlockHashes = append(foundDiffBlockHashes, foundHash)
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}
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for idx, blockHash := range foundDiffBlockHashes {
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p2p.Send(peer.app, GetDiffLayerMsg, GetDiffLayersPacket{RequestId: uint64(idx), BlockHashes: []common.Hash{blockHash}})
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if err := p2p.ExpectMsg(peer.app, FullDiffLayerMsg, foundDiffPackets[idx]); err != nil {
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t.Errorf("test %d: diff layer mismatch: %v", idx, err)
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}
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}
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for idx, blockHash := range missDiffBlockHashes {
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p2p.Send(peer.app, GetDiffLayerMsg, GetDiffLayersPacket{RequestId: uint64(idx), BlockHashes: []common.Hash{blockHash}})
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if err := p2p.ExpectMsg(peer.app, FullDiffLayerMsg, missDiffPackets[idx]); err != nil {
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t.Errorf("test %d: diff layer mismatch: %v", idx, err)
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}
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}
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p2p.Send(peer.app, GetDiffLayerMsg, GetDiffLayersPacket{RequestId: 111, BlockHashes: foundDiffBlockHashes})
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if err := p2p.ExpectMsg(peer.app, FullDiffLayerMsg, FullDiffLayersPacket{
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111,
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foundDiffRlps,
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}); err != nil {
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t.Errorf("test: diff layer mismatch: %v", err)
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}
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p2p.Send(peer.app, GetDiffLayerMsg, GetDiffLayersPacket{RequestId: 111, BlockHashes: missDiffBlockHashes})
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if err := p2p.ExpectMsg(peer.app, FullDiffLayerMsg, FullDiffLayersPacket{
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111,
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nil,
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}); err != nil {
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t.Errorf("test: diff layer mismatch: %v", err)
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}
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}
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