diff --git a/eth/protocols/trust/handler_test.go b/eth/protocols/trust/handler_test.go new file mode 100644 index 0000000000..e594401a2c --- /dev/null +++ b/eth/protocols/trust/handler_test.go @@ -0,0 +1,270 @@ +package trust + +import ( + "math/big" + "testing" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus/clique" + "github.com/ethereum/go-ethereum/core" + "github.com/ethereum/go-ethereum/core/rawdb" + "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/ethdb" + "github.com/ethereum/go-ethereum/p2p" + "github.com/ethereum/go-ethereum/p2p/enode" + "github.com/ethereum/go-ethereum/params" +) + +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) +) + +// testBackend is a mock implementation of the live Ethereum message handler. Its +// purpose is to allow testing the request/reply workflows and wire serialization +// in the `eth` protocol without actually doing any data processing. +type testBackend struct { + db ethdb.Database + chain *core.BlockChain + txpool *core.TxPool +} + +// newTestBackend creates an empty chain and wraps it into a mock backend. +func newTestBackend(blocks int) *testBackend { + return newTestBackendWithGenerator(blocks) +} + +// newTestBackend creates a chain with a number of explicitly defined blocks and +// wraps it into a mock backend. +func newTestBackendWithGenerator(blocks int) *testBackend { + signer := types.HomesteadSigner{} + db := rawdb.NewMemoryDatabase() + engine := clique.New(params.AllCliqueProtocolChanges.Clique, db) + genspec := &core.Genesis{ + //Config: params.TestChainConfig, + ExtraData: make([]byte, 32+common.AddressLength+65), + Alloc: core.GenesisAlloc{testAddr: {Balance: big.NewInt(100000000000000000)}}, + } + copy(genspec.ExtraData[32:], testAddr[:]) + genesis := genspec.MustCommit(db) + + chain, _ := core.NewBlockChain(db, nil, params.AllCliqueProtocolChanges, engine, vm.Config{}, nil, nil) + generator := func(i int, block *core.BlockGen) { + // The chain maker doesn't have access to a chain, so the difficulty will be + // lets unset (nil). Set it here to the correct value. + // block.SetCoinbase(testAddr) + block.SetDifficulty(big.NewInt(2)) + + // We want to simulate an empty middle block, having the same state as the + // first one. The last is needs a state change again to force a reorg. + tx, err := types.SignTx(types.NewTransaction(block.TxNonce(testAddr), common.Address{0x01}, big.NewInt(1), params.TxGas, nil, nil), signer, testKey) + if err != nil { + panic(err) + } + block.AddTxWithChain(chain, tx) + } + + bs, _ := core.GenerateChain(params.AllCliqueProtocolChanges, genesis, engine, db, blocks, generator) + for i, block := range bs { + header := block.Header() + if i > 0 { + header.ParentHash = bs[i-1].Hash() + } + header.Extra = make([]byte, 32+65) + header.Difficulty = big.NewInt(2) + + sig, _ := crypto.Sign(clique.SealHash(header).Bytes(), testKey) + copy(header.Extra[len(header.Extra)-65:], sig) + bs[i] = block.WithSeal(header) + } + + if _, err := chain.InsertChain(bs); err != nil { + panic(err) + } + + txconfig := core.DefaultTxPoolConfig + txconfig.Journal = "" // Don't litter the disk with test journals + + return &testBackend{ + db: db, + chain: chain, + txpool: core.NewTxPool(txconfig, params.AllCliqueProtocolChanges, chain), + } +} + +// close tears down the transaction pool and chain behind the mock backend. +func (b *testBackend) close() { + b.txpool.Stop() + b.chain.Stop() +} + +func (b *testBackend) Chain() *core.BlockChain { return b.chain } + +func (b *testBackend) RunPeer(peer *Peer, handler Handler) error { + // Normally the backend would do peer mainentance and handshakes. All that + // is omitted and we will just give control back to the handler. + return handler(peer) +} +func (b *testBackend) PeerInfo(enode.ID) interface{} { panic("not implemented") } + +func (b *testBackend) Handle(*Peer, Packet) error { + panic("data processing tests should be done in the handler package") +} + +func TestRequestRoot(t *testing.T) { testRequestRoot(t, Trust1) } + +func testRequestRoot(t *testing.T, protocol uint) { + t.Parallel() + + blockNum := 1032 // The latest 1024 blocks' DiffLayer will be cached. + backend := newTestBackend(blockNum) + defer backend.close() + + peer, _ := newTestPeer("peer", protocol, backend) + defer peer.close() + + pairs := []struct { + req RootRequestPacket + res RootResponsePacket + }{ + { + req: RootRequestPacket{ + RequestId: 1, + BlockNumber: 1, + }, + res: RootResponsePacket{ + RequestId: 1, + Status: types.StatusPartiallyVerified, + BlockNumber: 1, + Extra: defaultExtra, + }, + }, + { + req: RootRequestPacket{ + RequestId: 2, + BlockNumber: 128, + }, + res: RootResponsePacket{ + RequestId: 2, + Status: types.StatusFullVerified, + BlockNumber: 128, + Extra: defaultExtra, + }, + }, + { + req: RootRequestPacket{ + RequestId: 3, + BlockNumber: 128, + BlockHash: types.EmptyRootHash, + DiffHash: types.EmptyRootHash, + }, + res: RootResponsePacket{ + RequestId: 3, + Status: types.StatusImpossibleFork, + BlockNumber: 128, + BlockHash: types.EmptyRootHash, + Root: common.Hash{}, + Extra: defaultExtra, + }, + }, + { + req: RootRequestPacket{ + RequestId: 4, + BlockNumber: 128, + DiffHash: types.EmptyRootHash, + }, + res: RootResponsePacket{ + RequestId: 4, + Status: types.StatusDiffHashMismatch, + BlockNumber: 128, + Root: common.Hash{}, + Extra: defaultExtra, + }, + }, + { + req: RootRequestPacket{ + RequestId: 5, + BlockNumber: 1024, + }, + res: RootResponsePacket{ + RequestId: 5, + Status: types.StatusFullVerified, + BlockNumber: 1024, + Extra: defaultExtra, + }, + }, + { + req: RootRequestPacket{ + RequestId: 6, + BlockNumber: 1024, + BlockHash: types.EmptyRootHash, + DiffHash: types.EmptyRootHash, + }, + res: RootResponsePacket{ + RequestId: 6, + Status: types.StatusPossibleFork, + BlockNumber: 1024, + BlockHash: types.EmptyRootHash, + Root: common.Hash{}, + Extra: defaultExtra, + }, + }, + { + req: RootRequestPacket{ + RequestId: 7, + BlockNumber: 1033, + BlockHash: types.EmptyRootHash, + DiffHash: types.EmptyRootHash, + }, + res: RootResponsePacket{ + RequestId: 7, + Status: types.StatusBlockNewer, + BlockNumber: 1033, + BlockHash: types.EmptyRootHash, + Root: common.Hash{}, + Extra: defaultExtra, + }, + }, + { + req: RootRequestPacket{ + RequestId: 8, + BlockNumber: 1044, + BlockHash: types.EmptyRootHash, + DiffHash: types.EmptyRootHash, + }, + res: RootResponsePacket{ + RequestId: 8, + Status: types.StatusBlockTooNew, + BlockNumber: 1044, + BlockHash: types.EmptyRootHash, + Root: common.Hash{}, + Extra: defaultExtra, + }, + }, + } + + for idx, pair := range pairs { + header := backend.Chain().GetHeaderByNumber(pair.req.BlockNumber) + if header != nil { + if pair.res.Status.Code&0xFF00 == types.StatusVerified.Code { + pair.req.BlockHash = header.Hash() + pair.req.DiffHash, _ = core.CalculateDiffHash(backend.Chain().GetTrustedDiffLayer(header.Hash())) + pair.res.BlockHash = pair.req.BlockHash + pair.res.Root = header.Root + } else if pair.res.Status.Code == types.StatusDiffHashMismatch.Code { + pair.req.BlockHash = header.Hash() + pair.res.BlockHash = pair.req.BlockHash + } + } + + p2p.Send(peer.app, RequestRootMsg, pair.req) + if err := p2p.ExpectMsg(peer.app, RespondRootMsg, pair.res); err != nil { + t.Errorf("test %d: root response not expected: %v", idx, err) + } + } +} diff --git a/eth/protocols/trust/peer_test.go b/eth/protocols/trust/peer_test.go new file mode 100644 index 0000000000..ab229a1b32 --- /dev/null +++ b/eth/protocols/trust/peer_test.go @@ -0,0 +1,42 @@ +package trust + +import ( + "math/rand" + + "github.com/ethereum/go-ethereum/p2p" + "github.com/ethereum/go-ethereum/p2p/enode" +) + +// testPeer is a simulated peer to allow testing direct network calls. +type testPeer struct { + *Peer + + net p2p.MsgReadWriter // Network layer reader/writer to simulate remote messaging + app *p2p.MsgPipeRW // Application layer reader/writer to simulate the local side +} + +// newTestPeer creates a new peer registered at the given data backend. +func newTestPeer(name string, version uint, backend Backend) (*testPeer, <-chan error) { + // Create a message pipe to communicate through + app, net := p2p.MsgPipe() + + // Start the peer on a new thread + var id enode.ID + rand.Read(id[:]) + + peer := NewPeer(version, p2p.NewPeer(id, name, nil), net) + errc := make(chan error, 1) + go func() { + errc <- backend.RunPeer(peer, func(peer *Peer) error { + return Handle(backend, peer) + }) + }() + return &testPeer{app: app, net: net, Peer: peer}, errc +} + +// close terminates the local side of the peer, notifying the remote protocol +// manager of termination. +func (p *testPeer) close() { + p.Peer.Close() + p.app.Close() +}