340 lines
9.1 KiB
Go
340 lines
9.1 KiB
Go
package eth
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import (
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"fmt"
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"log"
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"math/big"
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"os"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/errs"
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ethlogger "github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/p2p/discover"
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)
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var logsys = ethlogger.NewStdLogSystem(os.Stdout, log.LstdFlags, ethlogger.LogLevel(ethlogger.DebugDetailLevel))
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var ini = false
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func logInit() {
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if !ini {
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ethlogger.AddLogSystem(logsys)
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ini = true
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}
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}
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type testTxPool struct {
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getTransactions func() []*types.Transaction
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addTransactions func(txs []*types.Transaction)
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}
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type testChainManager struct {
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getBlockHashes func(hash common.Hash, amount uint64) (hashes []common.Hash)
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getBlock func(hash common.Hash) *types.Block
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status func() (td *big.Int, currentBlock common.Hash, genesisBlock common.Hash)
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}
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type testBlockPool struct {
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addBlockHashes func(next func() (common.Hash, bool), peerId string)
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addBlock func(block *types.Block, peerId string) (err error)
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addPeer func(td *big.Int, currentBlock common.Hash, peerId string, requestHashes func(common.Hash) error, requestBlocks func([]common.Hash) error, peerError func(*errs.Error)) (best bool, suspended bool)
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removePeer func(peerId string)
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}
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func (self *testTxPool) AddTransactions(txs []*types.Transaction) {
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if self.addTransactions != nil {
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self.addTransactions(txs)
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}
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}
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func (self *testTxPool) GetTransactions() types.Transactions { return nil }
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func (self *testChainManager) GetBlockHashesFromHash(hash common.Hash, amount uint64) (hashes []common.Hash) {
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if self.getBlockHashes != nil {
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hashes = self.getBlockHashes(hash, amount)
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}
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return
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}
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func (self *testChainManager) Status() (td *big.Int, currentBlock common.Hash, genesisBlock common.Hash) {
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if self.status != nil {
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td, currentBlock, genesisBlock = self.status()
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} else {
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td = common.Big1
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currentBlock = common.Hash{1}
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genesisBlock = common.Hash{2}
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}
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return
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}
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func (self *testChainManager) GetBlock(hash common.Hash) (block *types.Block) {
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if self.getBlock != nil {
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block = self.getBlock(hash)
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}
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return
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}
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func (self *testBlockPool) AddBlockHashes(next func() (common.Hash, bool), peerId string) {
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if self.addBlockHashes != nil {
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self.addBlockHashes(next, peerId)
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}
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}
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func (self *testBlockPool) AddBlock(block *types.Block, peerId string) {
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if self.addBlock != nil {
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self.addBlock(block, peerId)
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}
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}
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func (self *testBlockPool) AddPeer(td *big.Int, currentBlock common.Hash, peerId string, requestBlockHashes func(common.Hash) error, requestBlocks func([]common.Hash) error, peerError func(*errs.Error)) (best bool, suspended bool) {
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if self.addPeer != nil {
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best, suspended = self.addPeer(td, currentBlock, peerId, requestBlockHashes, requestBlocks, peerError)
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}
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return
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}
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func (self *testBlockPool) RemovePeer(peerId string) {
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if self.removePeer != nil {
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self.removePeer(peerId)
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}
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}
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func testPeer() *p2p.Peer {
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var id discover.NodeID
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pk := crypto.GenerateNewKeyPair().PublicKey
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copy(id[:], pk)
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return p2p.NewPeer(id, "test peer", []p2p.Cap{})
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}
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type ethProtocolTester struct {
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p2p.MsgReadWriter // writing to the tester feeds the protocol
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quit chan error
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pipe *p2p.MsgPipeRW // the protocol read/writes on this end
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txPool *testTxPool // txPool
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chainManager *testChainManager // chainManager
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blockPool *testBlockPool // blockPool
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t *testing.T
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}
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func newEth(t *testing.T) *ethProtocolTester {
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p1, p2 := p2p.MsgPipe()
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return ðProtocolTester{
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MsgReadWriter: p1,
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quit: make(chan error, 1),
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pipe: p2,
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txPool: &testTxPool{},
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chainManager: &testChainManager{},
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blockPool: &testBlockPool{},
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t: t,
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}
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}
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func (self *ethProtocolTester) reset() {
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self.pipe.Close()
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p1, p2 := p2p.MsgPipe()
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self.MsgReadWriter = p1
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self.pipe = p2
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self.quit = make(chan error, 1)
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}
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func (self *ethProtocolTester) checkError(expCode int, delay time.Duration) (err error) {
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var timer = time.After(delay)
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select {
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case err = <-self.quit:
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case <-timer:
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self.t.Errorf("no error after %v, expected %v", delay, expCode)
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return
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}
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perr, ok := err.(*errs.Error)
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if ok && perr != nil {
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if code := perr.Code; code != expCode {
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self.t.Errorf("expected protocol error (code %v), got %v (%v)", expCode, code, err)
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}
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} else {
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self.t.Errorf("expected protocol error (code %v), got %v", expCode, err)
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}
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return
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}
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func (self *ethProtocolTester) run() {
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err := runEthProtocol(ProtocolVersion, NetworkId, self.txPool, self.chainManager, self.blockPool, testPeer(), self.pipe)
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self.quit <- err
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}
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func (self *ethProtocolTester) handshake(t *testing.T, mock bool) {
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td, currentBlock, genesis := self.chainManager.Status()
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// first outgoing msg should be StatusMsg.
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err := p2p.ExpectMsg(self, StatusMsg, &statusMsgData{
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ProtocolVersion: ProtocolVersion,
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NetworkId: NetworkId,
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TD: *td,
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CurrentBlock: currentBlock,
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GenesisBlock: genesis,
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})
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if err != nil {
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t.Fatalf("incorrect outgoing status: %v", err)
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}
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if mock {
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go p2p.Send(self, StatusMsg, &statusMsgData{ProtocolVersion, NetworkId, *td, currentBlock, genesis})
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}
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}
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func TestStatusMsgErrors(t *testing.T) {
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logInit()
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eth := newEth(t)
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go eth.run()
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td, currentBlock, genesis := eth.chainManager.Status()
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tests := []struct {
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code uint64
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data interface{}
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wantErrorCode int
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}{
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{
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code: TxMsg, data: []interface{}{},
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wantErrorCode: ErrNoStatusMsg,
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},
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{
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code: StatusMsg, data: statusMsgData{10, NetworkId, *td, currentBlock, genesis},
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wantErrorCode: ErrProtocolVersionMismatch,
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},
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{
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code: StatusMsg, data: statusMsgData{ProtocolVersion, 999, *td, currentBlock, genesis},
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wantErrorCode: ErrNetworkIdMismatch,
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},
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{
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code: StatusMsg, data: statusMsgData{ProtocolVersion, NetworkId, *td, currentBlock, common.Hash{3}},
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wantErrorCode: ErrGenesisBlockMismatch,
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},
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}
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for _, test := range tests {
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eth.handshake(t, false)
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// the send call might hang until reset because
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// the protocol might not read the payload.
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go p2p.Send(eth, test.code, test.data)
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eth.checkError(test.wantErrorCode, 1*time.Second)
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eth.reset()
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go eth.run()
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}
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}
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func TestNewBlockMsg(t *testing.T) {
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logInit()
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eth := newEth(t)
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var disconnected bool
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eth.blockPool.removePeer = func(peerId string) {
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fmt.Printf("peer <%s> is disconnected\n", peerId)
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disconnected = true
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}
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go eth.run()
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eth.handshake(t, true)
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err := p2p.ExpectMsg(eth, TxMsg, []interface{}{})
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if err != nil {
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t.Errorf("transactions expected, got %v", err)
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}
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var tds = make(chan *big.Int)
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eth.blockPool.addPeer = func(td *big.Int, currentBlock common.Hash, peerId string, requestHashes func(common.Hash) error, requestBlocks func([]common.Hash) error, peerError func(*errs.Error)) (best bool, suspended bool) {
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tds <- td
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return
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}
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var delay = 1 * time.Second
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// eth.reset()
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block := types.NewBlock(common.Hash{1}, common.Address{1}, common.Hash{1}, common.Big1, 1, "extra")
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go p2p.Send(eth, NewBlockMsg, &newBlockMsgData{Block: block})
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timer := time.After(delay)
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select {
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case td := <-tds:
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if td.Cmp(common.Big0) != 0 {
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t.Errorf("incorrect td %v, expected %v", td, common.Big0)
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}
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case <-timer:
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t.Errorf("no td recorded after %v", delay)
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return
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case err := <-eth.quit:
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t.Errorf("no error expected, got %v", err)
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return
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}
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go p2p.Send(eth, NewBlockMsg, &newBlockMsgData{block, common.Big2})
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timer = time.After(delay)
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select {
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case td := <-tds:
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if td.Cmp(common.Big2) != 0 {
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t.Errorf("incorrect td %v, expected %v", td, common.Big2)
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}
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case <-timer:
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t.Errorf("no td recorded after %v", delay)
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return
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case err := <-eth.quit:
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t.Errorf("no error expected, got %v", err)
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return
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}
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go p2p.Send(eth, NewBlockMsg, []interface{}{})
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// Block.DecodeRLP: validation failed: header is nil
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eth.checkError(ErrDecode, delay)
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}
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func TestBlockMsg(t *testing.T) {
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logInit()
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eth := newEth(t)
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blocks := make(chan *types.Block)
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eth.blockPool.addBlock = func(block *types.Block, peerId string) (err error) {
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blocks <- block
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return
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}
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var disconnected bool
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eth.blockPool.removePeer = func(peerId string) {
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fmt.Printf("peer <%s> is disconnected\n", peerId)
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disconnected = true
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}
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go eth.run()
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eth.handshake(t, true)
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err := p2p.ExpectMsg(eth, TxMsg, []interface{}{})
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if err != nil {
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t.Errorf("transactions expected, got %v", err)
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}
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var delay = 3 * time.Second
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// eth.reset()
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newblock := func(i int64) *types.Block {
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return types.NewBlock(common.Hash{byte(i)}, common.Address{byte(i)}, common.Hash{byte(i)}, big.NewInt(i), uint64(i), string(i))
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}
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go p2p.Send(eth, BlocksMsg, types.Blocks{newblock(0), newblock(1), newblock(2)})
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timer := time.After(delay)
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for i := int64(0); i < 3; i++ {
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select {
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case block := <-blocks:
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if (block.ParentHash() != common.Hash{byte(i)}) {
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t.Errorf("incorrect block %v, expected %v", block.ParentHash(), common.Hash{byte(i)})
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}
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case <-timer:
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t.Errorf("no td recorded after %v", delay)
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return
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case err := <-eth.quit:
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t.Errorf("no error expected, got %v", err)
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return
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}
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}
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}
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