274 lines
7.7 KiB
Go
274 lines
7.7 KiB
Go
package trust
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import (
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"math/big"
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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/clique"
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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/txpool/legacypool"
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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/trie"
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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 *legacypool.LegacyPool
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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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db := rawdb.NewMemoryDatabase()
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engine := clique.New(params.AllCliqueProtocolChanges.Clique, db)
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genspec := &core.Genesis{
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Config: params.AllCliqueProtocolChanges,
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ExtraData: make([]byte, 32+common.AddressLength+65),
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Alloc: core.GenesisAlloc{testAddr: {Balance: big.NewInt(100000000000000000)}},
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BaseFee: big.NewInt(0),
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}
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copy(genspec.ExtraData[32:], testAddr[:])
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genesis := genspec.MustCommit(db, trie.NewDatabase(db, nil))
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chain, _ := core.NewBlockChain(db, nil, genspec, nil, engine, 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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block.SetDifficulty(big.NewInt(2))
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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, nil, 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.AllCliqueProtocolChanges, genesis, engine, db, blocks, generator)
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for i, block := range bs {
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header := block.Header()
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if i > 0 {
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header.ParentHash = bs[i-1].Hash()
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}
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header.Extra = make([]byte, 32+65)
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header.Difficulty = big.NewInt(2)
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sig, _ := crypto.Sign(clique.SealHash(header).Bytes(), testKey)
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copy(header.Extra[len(header.Extra)-65:], sig)
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bs[i] = block.WithSeal(header)
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}
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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 := legacypool.DefaultConfig
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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: legacypool.New(txconfig, 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.Close()
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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 TestRequestRoot(t *testing.T) { testRequestRoot(t, Trust1) }
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func testRequestRoot(t *testing.T, protocol uint) {
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t.Parallel()
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blockNum := 1032 // The latest 1024 blocks' DiffLayer will be cached.
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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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pairs := []struct {
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req RootRequestPacket
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res RootResponsePacket
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}{
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{
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req: RootRequestPacket{
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RequestId: 1,
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BlockNumber: 1,
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},
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res: RootResponsePacket{
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RequestId: 1,
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Status: types.StatusPartiallyVerified,
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BlockNumber: 1,
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Extra: defaultExtra,
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},
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},
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{
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req: RootRequestPacket{
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RequestId: 2,
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BlockNumber: 128,
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},
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res: RootResponsePacket{
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RequestId: 2,
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Status: types.StatusFullVerified,
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BlockNumber: 128,
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Extra: defaultExtra,
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},
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},
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{
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req: RootRequestPacket{
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RequestId: 3,
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BlockNumber: 128,
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BlockHash: types.EmptyRootHash,
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DiffHash: types.EmptyRootHash,
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},
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res: RootResponsePacket{
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RequestId: 3,
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Status: types.StatusImpossibleFork,
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BlockNumber: 128,
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BlockHash: types.EmptyRootHash,
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Root: common.Hash{},
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Extra: defaultExtra,
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},
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},
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{
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req: RootRequestPacket{
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RequestId: 4,
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BlockNumber: 128,
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DiffHash: types.EmptyRootHash,
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},
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res: RootResponsePacket{
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RequestId: 4,
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Status: types.StatusDiffHashMismatch,
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BlockNumber: 128,
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Root: common.Hash{},
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Extra: defaultExtra,
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},
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},
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{
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req: RootRequestPacket{
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RequestId: 5,
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BlockNumber: 1024,
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},
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res: RootResponsePacket{
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RequestId: 5,
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Status: types.StatusFullVerified,
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BlockNumber: 1024,
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Extra: defaultExtra,
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},
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},
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{
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req: RootRequestPacket{
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RequestId: 6,
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BlockNumber: 1024,
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BlockHash: types.EmptyRootHash,
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DiffHash: types.EmptyRootHash,
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},
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res: RootResponsePacket{
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RequestId: 6,
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Status: types.StatusPossibleFork,
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BlockNumber: 1024,
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BlockHash: types.EmptyRootHash,
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Root: common.Hash{},
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Extra: defaultExtra,
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},
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},
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{
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req: RootRequestPacket{
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RequestId: 7,
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BlockNumber: 1033,
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BlockHash: types.EmptyRootHash,
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DiffHash: types.EmptyRootHash,
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},
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res: RootResponsePacket{
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RequestId: 7,
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Status: types.StatusBlockNewer,
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BlockNumber: 1033,
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BlockHash: types.EmptyRootHash,
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Root: common.Hash{},
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Extra: defaultExtra,
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},
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},
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{
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req: RootRequestPacket{
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RequestId: 8,
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BlockNumber: 1044,
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BlockHash: types.EmptyRootHash,
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DiffHash: types.EmptyRootHash,
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},
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res: RootResponsePacket{
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RequestId: 8,
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Status: types.StatusBlockTooNew,
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BlockNumber: 1044,
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BlockHash: types.EmptyRootHash,
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Root: common.Hash{},
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Extra: defaultExtra,
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},
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},
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}
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for idx, pair := range pairs {
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header := backend.Chain().GetHeaderByNumber(pair.req.BlockNumber)
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if header != nil {
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if pair.res.Status.Code&0xFF00 == types.StatusVerified.Code {
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pair.req.BlockHash = header.Hash()
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pair.req.DiffHash, _ = core.CalculateDiffHash(backend.Chain().GetTrustedDiffLayer(header.Hash()))
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pair.res.BlockHash = pair.req.BlockHash
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pair.res.Root = header.Root
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} else if pair.res.Status.Code == types.StatusDiffHashMismatch.Code {
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pair.req.BlockHash = header.Hash()
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pair.res.BlockHash = pair.req.BlockHash
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}
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}
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p2p.Send(peer.app, RequestRootMsg, pair.req)
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if err := p2p.ExpectMsg(peer.app, RespondRootMsg, pair.res); err != nil {
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t.Errorf("test %d: root response not expected: %v", idx, err)
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}
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}
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}
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