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// This file contains some shares testing functionality, common to multiple
// different files and modules being tested.
package eth
import (
"crypto/rand"
"math/big"
"sync"
"testing"
"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"
)
var (
testBankKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
testBankAddress = crypto.PubkeyToAddress(testBankKey.PublicKey)
testBankFunds = big.NewInt(1000000)
)
// newTestProtocolManager creates a new protocol manager for testing purposes,
// with the given number of blocks already known, and potential notification
// channels for different events.
func newTestProtocolManager(fastSync bool, blocks int, generator func(int, *core.BlockGen), newtx chan<- []*types.Transaction) (*ProtocolManager, error) {
var (
evmux = new(event.TypeMux)
pow = new(core.FakePow)
db, _ = ethdb.NewMemDatabase()
genesis = core.WriteGenesisBlockForTesting(db, core.GenesisAccount{testBankAddress, testBankFunds})
blockchain, _ = core.NewBlockChain(db, pow, evmux)
blockproc = core.NewBlockProcessor(db, pow, blockchain, evmux)
)
blockchain.SetProcessor(blockproc)
chain, _ := core.GenerateChain(genesis, db, blocks, generator)
if _, err := blockchain.InsertChain(chain); err != nil {
panic(err)
}
pm, err := NewProtocolManager(fastSync, NetworkId, evmux, &testTxPool{added: newtx}, pow, blockchain, db)
if err != nil {
return nil, err
}
pm.Start()
return pm, nil
}
// newTestProtocolManagerMust creates a new protocol manager for testing purposes,
// with the given number of blocks already known, and potential notification
// channels for different events. In case of an error, the constructor force-
// fails the test.
func newTestProtocolManagerMust(t *testing.T, fastSync bool, blocks int, generator func(int, *core.BlockGen), newtx chan<- []*types.Transaction) *ProtocolManager {
pm, err := newTestProtocolManager(fastSync, blocks, generator, newtx)
if err != nil {
t.Fatalf("Failed to create protocol manager: %v", err)
}
return pm
}
// testTxPool is a fake, helper transaction pool for testing purposes
type testTxPool struct {
pool []*types.Transaction // Collection of all transactions
added chan<- []*types.Transaction // Notification channel for new transactions
lock sync.RWMutex // Protects the transaction pool
}
// AddTransactions appends a batch of transactions to the pool, and notifies any
// listeners if the addition channel is non nil
func (p *testTxPool) AddTransactions(txs []*types.Transaction) {
p.lock.Lock()
defer p.lock.Unlock()
p.pool = append(p.pool, txs...)
if p.added != nil {
p.added <- txs
}
}
// GetTransactions returns all the transactions known to the pool
func (p *testTxPool) GetTransactions() types.Transactions {
p.lock.RLock()
defer p.lock.RUnlock()
txs := make([]*types.Transaction, len(p.pool))
copy(txs, p.pool)
return txs
}
// newTestTransaction create a new dummy transaction.
func newTestTransaction(from *crypto.Key, nonce uint64, datasize int) *types.Transaction {
tx := types.NewTransaction(nonce, common.Address{}, big.NewInt(0), big.NewInt(100000), big.NewInt(0), make([]byte, datasize))
tx, _ = tx.SignECDSA(from.PrivateKey)
return tx
}
// testPeer is a simulated peer to allow testing direct network calls.
type testPeer struct {
net p2p.MsgReadWriter // Network layer reader/writer to simulate remote messaging
app *p2p.MsgPipeRW // Application layer reader/writer to simulate the local side
*peer
}
// newTestPeer creates a new peer registered at the given protocol manager.
func newTestPeer(name string, version int, pm *ProtocolManager, shake bool) (*testPeer, <-chan error) {
// Create a message pipe to communicate through
app, net := p2p.MsgPipe()
// Generate a random id and create the peer
var id discover.NodeID
rand.Read(id[:])
peer := pm.newPeer(version, p2p.NewPeer(id, name, nil), net)
// Start the peer on a new thread
errc := make(chan error, 1)
go func() {
pm.newPeerCh <- peer
errc <- pm.handle(peer)
}()
tp := &testPeer{
app: app,
net: net,
peer: peer,
}
// Execute any implicitly requested handshakes and return
if shake {
td, head, genesis := pm.blockchain.Status()
tp.handshake(nil, td, head, genesis)
}
return tp, errc
}
// handshake simulates a trivial handshake that expects the same state from the
// remote side as we are simulating locally.
func (p *testPeer) handshake(t *testing.T, td *big.Int, head common.Hash, genesis common.Hash) {
msg := &statusData{
ProtocolVersion: uint32(p.version),
NetworkId: uint32(NetworkId),
TD: td,
CurrentBlock: head,
GenesisBlock: genesis,
}
if err := p2p.ExpectMsg(p.app, StatusMsg, msg); err != nil {
t.Fatalf("status recv: %v", err)
}
if err := p2p.Send(p.app, StatusMsg, msg); err != nil {
t.Fatalf("status send: %v", err)
}
}
// close terminates the local side of the peer, notifying the remote protocol
// manager of termination.
func (p *testPeer) close() {
p.app.Close()
}
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