go-pulse/p2p/protocol_test.go
Felix Lange eb0e7b1b81 eth, p2p: remove EncodeMsg from p2p.MsgWriter
...and make it a top-level function instead.

The original idea behind having EncodeMsg in the interface was that
implementations might be able to encode RLP data to their underlying
writer directly instead of buffering the encoded data. The encoder
will buffer anyway, so that doesn't matter anymore.

Given the recent problems with EncodeMsg (copy-pasted implementation
bug) I'd rather implement once, correctly.
2015-01-06 12:23:38 +01:00

137 lines
3.2 KiB
Go

package p2p
import (
"fmt"
"net"
"reflect"
"testing"
"github.com/ethereum/go-ethereum/crypto"
)
type peerId struct {
pubkey []byte
}
func (self *peerId) String() string {
return fmt.Sprintf("test peer %x", self.Pubkey()[:4])
}
func (self *peerId) Pubkey() (pubkey []byte) {
pubkey = self.pubkey
if len(pubkey) == 0 {
pubkey = crypto.GenerateNewKeyPair().PublicKey
self.pubkey = pubkey
}
return
}
func newTestPeer() (peer *Peer) {
peer = NewPeer(&peerId{}, []Cap{})
peer.pubkeyHook = func(*peerAddr) error { return nil }
peer.ourID = &peerId{}
peer.listenAddr = &peerAddr{}
peer.otherPeers = func() []*Peer { return nil }
return
}
func TestBaseProtocolPeers(t *testing.T) {
cannedPeerList := []*peerAddr{
{IP: net.ParseIP("1.2.3.4"), Port: 2222, Pubkey: []byte{}},
{IP: net.ParseIP("5.6.7.8"), Port: 3333, Pubkey: []byte{}},
}
var ownAddr *peerAddr = &peerAddr{IP: net.ParseIP("1.3.5.7"), Port: 1111, Pubkey: []byte{}}
rw1, rw2 := MsgPipe()
// run matcher, close pipe when addresses have arrived
addrChan := make(chan *peerAddr, len(cannedPeerList))
go func() {
for _, want := range cannedPeerList {
got := <-addrChan
t.Logf("got peer: %+v", got)
if !reflect.DeepEqual(want, got) {
t.Errorf("mismatch: got %#v, want %#v", got, want)
}
}
close(addrChan)
var own []*peerAddr
var got *peerAddr
for got = range addrChan {
own = append(own, got)
}
if len(own) != 1 || !reflect.DeepEqual(ownAddr, own[0]) {
t.Errorf("mismatch: peers own address is incorrectly or not given, got %v, want %#v", ownAddr)
}
rw2.Close()
}()
// run first peer
peer1 := newTestPeer()
peer1.ourListenAddr = ownAddr
peer1.otherPeers = func() []*Peer {
pl := make([]*Peer, len(cannedPeerList))
for i, addr := range cannedPeerList {
pl[i] = &Peer{listenAddr: addr}
}
return pl
}
go runBaseProtocol(peer1, rw1)
// run second peer
peer2 := newTestPeer()
peer2.newPeerAddr = addrChan // feed peer suggestions into matcher
if err := runBaseProtocol(peer2, rw2); err != ErrPipeClosed {
t.Errorf("peer2 terminated with unexpected error: %v", err)
}
}
func TestBaseProtocolDisconnect(t *testing.T) {
peer := NewPeer(&peerId{}, nil)
peer.ourID = &peerId{}
peer.pubkeyHook = func(*peerAddr) error { return nil }
rw1, rw2 := MsgPipe()
done := make(chan struct{})
go func() {
if err := expectMsg(rw2, handshakeMsg); err != nil {
t.Error(err)
}
err := EncodeMsg(rw2, handshakeMsg,
baseProtocolVersion,
"",
[]interface{}{},
0,
make([]byte, 64),
)
if err != nil {
t.Error(err)
}
if err := expectMsg(rw2, getPeersMsg); err != nil {
t.Error(err)
}
if err := EncodeMsg(rw2, discMsg, DiscQuitting); err != nil {
t.Error(err)
}
close(done)
}()
if err := runBaseProtocol(peer, rw1); err == nil {
t.Errorf("base protocol returned without error")
} else if reason, ok := err.(discRequestedError); !ok || reason != DiscQuitting {
t.Errorf("base protocol returned wrong error: %v", err)
}
<-done
}
func expectMsg(r MsgReader, code uint64) error {
msg, err := r.ReadMsg()
if err != nil {
return err
}
if err := msg.Discard(); err != nil {
return err
}
if msg.Code != code {
return fmt.Errorf("wrong message code: got %d, expected %d", msg.Code, code)
}
return nil
}