feat(testutil) add testutil.Peer shim

util/testutil/peer.go

+package testutil
+
+import (
+	"testing"
+
+	ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
+	ci "github.com/jbenet/go-ipfs/crypto"
+	ipfspeer "github.com/jbenet/go-ipfs/peer"
+)
+
+type Peer interface {
+	Address() ma.Multiaddr
+	ID() ipfspeer.ID
+	PrivateKey() ci.PrivKey
+	PublicKey() ci.PubKey
+}
+
+func RandPeer(t *testing.T) Peer {
+	p := RandPeerNetParams(t)
+	var err error
+	p.Addr = RandLocalTCPAddress()
+	p.PrivKey, p.PubKey, err = ci.GenerateKeyPair(ci.RSA, 512)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	p.ID, err = ipfspeer.IDFromPublicKey(p.PubKey)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if err := p.checkKeys(); err != nil {
+		t.Fatal(err)
+	}
+	return &testpeer{p}
+}
+
+// peer is a temporary shim to delay binding of PeerNetParams.
+type testpeer struct {
+	PeerNetParams
+}
+
+func (p *testpeer) ID() ipfspeer.ID {
+	return p.PeerNetParams.ID
+}
+
+func (p *testpeer) Address() ma.Multiaddr {
+	return p.Addr
+}
+
+func (p *testpeer) PrivateKey() ci.PrivKey {
+	return p.PrivKey
+}
+
+func (p *testpeer) PublicKey() ci.PubKey {
+	return p.PubKey
+}