package eth
import (
"crypto/rand"
"math/big"
"sync"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/discover"
)
func init() {
// glog.SetToStderr(true)
// glog.SetV(6)
}
var testAccount = crypto.NewKey(rand.Reader)
func TestStatusMsgErrors(t *testing.T) {
pm := newProtocolManagerForTesting(nil)
td, currentBlock, genesis := pm.chainman.Status()
defer pm.Stop()
tests := []struct {
code uint64
data interface{}
wantError error
}{
{
code: TxMsg, data: []interface{}{},
wantError: errResp(ErrNoStatusMsg, "first msg has code 2 (!= 0)"),
},
{
code: StatusMsg, data: statusMsgData{10, NetworkId, td, currentBlock, genesis},
wantError: errResp(ErrProtocolVersionMismatch, "10 (!= 0)"),
},
{
code: StatusMsg, data: statusMsgData{ProtocolVersion, 999, td, currentBlock, genesis},
wantError: errResp(ErrNetworkIdMismatch, "999 (!= 0)"),
},
{
code: StatusMsg, data: statusMsgData{ProtocolVersion, NetworkId, td, currentBlock, common.Hash{3}},
wantError: errResp(ErrGenesisBlockMismatch, "0300000000000000000000000000000000000000000000000000000000000000 (!= %x)", genesis),
},
}
for i, test := range tests {
p, errc := newTestPeer(pm)
// The send call might hang until reset because
// the protocol might not read the payload.
go p2p.Send(p, test.code, test.data)
select {
case err := <-errc:
if err == nil {
t.Errorf("test %d: protocol returned nil error, want %q", test.wantError)
} else if err.Error() != test.wantError.Error() {
t.Errorf("test %d: wrong error: got %q, want %q", i, err, test.wantError)
}
case <-time.After(2 * time.Second):
t.Errorf("protocol did not shut down withing 2 seconds")
}
p.close()
}
}
// This test checks that received transactions are added to the local pool.
func TestRecvTransactions(t *testing.T) {
txAdded := make(chan []*types.Transaction)
pm := newProtocolManagerForTesting(txAdded)
p, _ := newTestPeer(pm)
defer pm.Stop()
defer p.close()
p.handshake(t)
tx := newtx(testAccount, 0, 0)
if err := p2p.Send(p, TxMsg, []interface{}{tx}); err != nil {
t.Fatalf("send error: %v", err)
}
select {
case added := <-txAdded:
if len(added) != 1 {
t.Errorf("wrong number of added transactions: got %d, want 1", len(added))
} else if added[0].Hash() != tx.Hash() {
t.Errorf("added wrong tx hash: got %v, want %v", added[0].Hash(), tx.Hash())
}
case <-time.After(2 * time.Second):
t.Errorf("no TxPreEvent received within 2 seconds")
}
}
// This test checks that pending transactions are sent.
func TestSendTransactions(t *testing.T) {
pm := newProtocolManagerForTesting(nil)
defer pm.Stop()
// Fill the pool with big transactions.
const txsize = txsyncPackSize / 10
alltxs := make([]*types.Transaction, 100)
for nonce := range alltxs {
alltxs[nonce] = newtx(testAccount, uint64(nonce), txsize)
}
pm.txpool.AddTransactions(alltxs)
// Connect several peers. They should all receive the pending transactions.
var wg sync.WaitGroup
checktxs := func(p *testPeer) {
defer wg.Done()
defer p.close()
seen := make(map[common.Hash]bool)
for _, tx := range alltxs {
seen[tx.Hash()] = false
}
for n := 0; n < len(alltxs) && !t.Failed(); {
var txs []*types.Transaction
msg, err := p.ReadMsg()
if err != nil {
t.Errorf("%v: read error: %v", p.Peer, err)
} else if msg.Code != TxMsg {
t.Errorf("%v: got code %d, want TxMsg", p.Peer, msg.Code)
}
if err := msg.Decode(&txs); err != nil {
t.Errorf("%v: %v", p.Peer, err)
}
for _, tx := range txs {
hash := tx.Hash()
seentx, want := seen[hash]
if seentx {
t.Errorf("%v: got tx more than once: %x", p.Peer, hash)
}
if !want {
t.Errorf("%v: got unexpected tx: %x", p.Peer, hash)
}
seen[hash] = true
n++
}
}
}
for i := 0; i < 3; i++ {
p, _ := newTestPeer(pm)
p.handshake(t)
wg.Add(1)
go checktxs(p)
}
wg.Wait()
}
// testPeer wraps all peer-related data for tests.
type testPeer struct {
p2p.MsgReadWriter // writing to the test peer feeds the protocol
pipe *p2p.MsgPipeRW // the protocol read/writes on this end
pm *ProtocolManager
*peer
}
func newProtocolManagerForTesting(txAdded chan<- []*types.Transaction) *ProtocolManager {
var (
em = new(event.TypeMux)
db, _ = ethdb.NewMemDatabase()
chain, _ = core.NewChainManager(core.GenesisBlock(0, db), db, db, core.FakePow{}, em)
txpool = &fakeTxPool{added: txAdded}
pm = NewProtocolManager(ProtocolVersion, 0, em, txpool, core.FakePow{}, chain)
)
pm.Start()
return pm
}
func newTestPeer(pm *ProtocolManager) (*testPeer, <-chan error) {
var id discover.NodeID
rand.Read(id[:])
rw1, rw2 := p2p.MsgPipe()
peer := pm.newPeer(pm.protVer, pm.netId, p2p.NewPeer(id, "test peer", nil), rw2)
errc := make(chan error, 1)
go func() {
pm.newPeerCh <- peer
errc <- pm.handle(peer)
}()
return &testPeer{rw1, rw2, pm, peer}, errc
}
func (p *testPeer) handshake(t *testing.T) {
td, currentBlock, genesis := p.pm.chainman.Status()
msg := &statusMsgData{
ProtocolVersion: uint32(p.pm.protVer),
NetworkId: uint32(p.pm.netId),
TD: td,
CurrentBlock: currentBlock,
GenesisBlock: genesis,
}
if err := p2p.ExpectMsg(p, StatusMsg, msg); err != nil {
t.Fatalf("status recv: %v", err)
}
if err := p2p.Send(p, StatusMsg, msg); err != nil {
t.Fatalf("status send: %v", err)
}
}
func (p *testPeer) close() {
p.pipe.Close()
}
type fakeTxPool struct {
// all transactions are collected.
mu sync.Mutex
all []*types.Transaction
// if added is non-nil, it receives added transactions.
added chan<- []*types.Transaction
}
func (pool *fakeTxPool) AddTransactions(txs []*types.Transaction) {
pool.mu.Lock()
defer pool.mu.Unlock()
pool.all = append(pool.all, txs...)
if pool.added != nil {
pool.added <- txs
}
}
func (pool *fakeTxPool) GetTransactions() types.Transactions {
pool.mu.Lock()
defer pool.mu.Unlock()
txs := make([]*types.Transaction, len(pool.all))
copy(txs, pool.all)
return types.Transactions(txs)
}
func newtx(from *crypto.Key, nonce uint64, datasize int) *types.Transaction {
data := make([]byte, datasize)
tx := types.NewTransactionMessage(common.Address{}, big.NewInt(0), big.NewInt(100000), big.NewInt(0), data)
tx.SetNonce(nonce)
return tx
}
