package blockchain import ( "net" "testing" cmn "github.com/tendermint/tendermint/libs/common" dbm "github.com/tendermint/tendermint/libs/db" "github.com/tendermint/tendermint/libs/log" cfg "github.com/tendermint/tendermint/config" "github.com/tendermint/tendermint/p2p" "github.com/tendermint/tendermint/proxy" sm "github.com/tendermint/tendermint/state" "github.com/tendermint/tendermint/types" ) func makeStateAndBlockStore(logger log.Logger) (sm.State, *BlockStore) { config := cfg.ResetTestRoot("blockchain_reactor_test") // blockDB := dbm.NewDebugDB("blockDB", dbm.NewMemDB()) // stateDB := dbm.NewDebugDB("stateDB", dbm.NewMemDB()) blockDB := dbm.NewMemDB() stateDB := dbm.NewMemDB() blockStore := NewBlockStore(blockDB) state, err := sm.LoadStateFromDBOrGenesisFile(stateDB, config.GenesisFile()) if err != nil { panic(cmn.ErrorWrap(err, "error constructing state from genesis file")) } return state, blockStore } func newBlockchainReactor(logger log.Logger, maxBlockHeight int64) *BlockchainReactor { state, blockStore := makeStateAndBlockStore(logger) // Make the blockchainReactor itself fastSync := true var nilApp proxy.AppConnConsensus blockExec := sm.NewBlockExecutor(dbm.NewMemDB(), log.TestingLogger(), nilApp, sm.MockMempool{}, sm.MockEvidencePool{}) bcReactor := NewBlockchainReactor(state.Copy(), blockExec, blockStore, fastSync) bcReactor.SetLogger(logger.With("module", "blockchain")) // Next: we need to set a switch in order for peers to be added in bcReactor.Switch = p2p.NewSwitch(cfg.DefaultP2PConfig(), nil) // Lastly: let's add some blocks in for blockHeight := int64(1); blockHeight <= maxBlockHeight; blockHeight++ { firstBlock := makeBlock(blockHeight, state) secondBlock := makeBlock(blockHeight+1, state) firstParts := firstBlock.MakePartSet(types.BlockPartSizeBytes) blockStore.SaveBlock(firstBlock, firstParts, secondBlock.LastCommit) } return bcReactor } func TestNoBlockResponse(t *testing.T) { maxBlockHeight := int64(20) bcr := newBlockchainReactor(log.TestingLogger(), maxBlockHeight) bcr.Start() defer bcr.Stop() // Add some peers in peer := newbcrTestPeer(p2p.ID(cmn.RandStr(12))) bcr.AddPeer(peer) chID := byte(0x01) tests := []struct { height int64 existent bool }{ {maxBlockHeight + 2, false}, {10, true}, {1, true}, {100, false}, } // receive a request message from peer, // wait for our response to be received on the peer for _, tt := range tests { reqBlockMsg := &bcBlockRequestMessage{tt.height} reqBlockBytes := cdc.MustMarshalBinaryBare(reqBlockMsg) bcr.Receive(chID, peer, reqBlockBytes) msg := peer.lastBlockchainMessage() if tt.existent { if blockMsg, ok := msg.(*bcBlockResponseMessage); !ok { t.Fatalf("Expected to receive a block response for height %d", tt.height) } else if blockMsg.Block.Height != tt.height { t.Fatalf("Expected response to be for height %d, got %d", tt.height, blockMsg.Block.Height) } } else { if noBlockMsg, ok := msg.(*bcNoBlockResponseMessage); !ok { t.Fatalf("Expected to receive a no block response for height %d", tt.height) } else if noBlockMsg.Height != tt.height { t.Fatalf("Expected response to be for height %d, got %d", tt.height, noBlockMsg.Height) } } } } /* // NOTE: This is too hard to test without // an easy way to add test peer to switch // or without significant refactoring of the module. // Alternatively we could actually dial a TCP conn but // that seems extreme. func TestBadBlockStopsPeer(t *testing.T) { maxBlockHeight := int64(20) bcr := newBlockchainReactor(log.TestingLogger(), maxBlockHeight) bcr.Start() defer bcr.Stop() // Add some peers in peer := newbcrTestPeer(p2p.ID(cmn.RandStr(12))) // XXX: This doesn't add the peer to anything, // so it's hard to check that it's later removed bcr.AddPeer(peer) assert.True(t, bcr.Switch.Peers().Size() > 0) // send a bad block from the peer // default blocks already dont have commits, so should fail block := bcr.store.LoadBlock(3) msg := &bcBlockResponseMessage{Block: block} peer.Send(BlockchainChannel, struct{ BlockchainMessage }{msg}) ticker := time.NewTicker(time.Millisecond * 10) timer := time.NewTimer(time.Second * 2) LOOP: for { select { case <-ticker.C: if bcr.Switch.Peers().Size() == 0 { break LOOP } case <-timer.C: t.Fatal("Timed out waiting to disconnect peer") } } } */ //---------------------------------------------- // utility funcs func makeTxs(height int64) (txs []types.Tx) { for i := 0; i < 10; i++ { txs = append(txs, types.Tx([]byte{byte(height), byte(i)})) } return txs } func makeBlock(height int64, state sm.State) *types.Block { block, _ := state.MakeBlock(height, makeTxs(height), new(types.Commit), nil, state.Validators.GetProposer().Address) return block } // The Test peer type bcrTestPeer struct { cmn.BaseService id p2p.ID ch chan interface{} } var _ p2p.Peer = (*bcrTestPeer)(nil) func newbcrTestPeer(id p2p.ID) *bcrTestPeer { bcr := &bcrTestPeer{ id: id, ch: make(chan interface{}, 2), } bcr.BaseService = *cmn.NewBaseService(nil, "bcrTestPeer", bcr) return bcr } func (tp *bcrTestPeer) lastBlockchainMessage() interface{} { return <-tp.ch } func (tp *bcrTestPeer) TrySend(chID byte, msgBytes []byte) bool { var msg BlockchainMessage err := cdc.UnmarshalBinaryBare(msgBytes, &msg) if err != nil { panic(cmn.ErrorWrap(err, "Error while trying to parse a BlockchainMessage")) } if _, ok := msg.(*bcStatusResponseMessage); ok { // Discard status response messages since they skew our results // We only want to deal with: // + bcBlockResponseMessage // + bcNoBlockResponseMessage } else { tp.ch <- msg } return true } func (tp *bcrTestPeer) Send(chID byte, msgBytes []byte) bool { return tp.TrySend(chID, msgBytes) } func (tp *bcrTestPeer) NodeInfo() p2p.NodeInfo { return p2p.DefaultNodeInfo{} } func (tp *bcrTestPeer) Status() p2p.ConnectionStatus { return p2p.ConnectionStatus{} } func (tp *bcrTestPeer) ID() p2p.ID { return tp.id } func (tp *bcrTestPeer) IsOutbound() bool { return false } func (tp *bcrTestPeer) IsPersistent() bool { return true } func (tp *bcrTestPeer) Get(s string) interface{} { return s } func (tp *bcrTestPeer) Set(string, interface{}) {} func (tp *bcrTestPeer) RemoteIP() net.IP { return []byte{127, 0, 0, 1} }