package cnet_test import ( "context" "fmt" "log" "net" "os" "sync" "testing" "time" "github.com/CPunch/gopenfusion/cnet" "github.com/CPunch/gopenfusion/cnet/protocol" "github.com/CPunch/gopenfusion/internal/testutil" "github.com/matryer/is" ) var ( srvcPort int ) const ( timeout = 2 * time.Second maxDummyPeers = 5 ) func TestMain(m *testing.M) { var err error srvcPort, err = cnet.RandomPort() if err != nil { panic(err) } os.Exit(m.Run()) } func TestService(t *testing.T) { is := is.New(t) ctx, cancel := context.WithCancel(context.Background()) srvc := cnet.NewService(ctx, "TEST", srvcPort) wg := sync.WaitGroup{} // shutdown service when test is done defer func() { cancel() is.True(testutil.SelectWithTimeout(srvc.Stopped(), timeout)) // wait for service to stop with timeout }() // our dummy packet handler wg.Add(maxDummyPeers) srvc.AddPacketHandler(0x1234, func(peer *cnet.Peer, pkt protocol.Packet) error { log.Printf("Received packet %#v", pkt) wg.Done() return nil }) // wait for all dummy peers to connect and disconnect wg.Add(maxDummyPeers) srvc.OnConnect = func(peer *cnet.Peer) { wg.Done() } wg.Add(maxDummyPeers) srvc.OnDisconnect = func(peer *cnet.Peer) { wg.Done() } // run service go func() { is.NoErr(srvc.Start()) }() // srvc.Start error is.True(testutil.SelectWithTimeout(srvc.Started(), timeout)) // wait for service to start with timeout wg.Add(maxDummyPeers * 2) // 2 wg.Done() per peer for receiving packets for i := 0; i < maxDummyPeers; i++ { go func() { // make dummy client conn, err := net.Dial("tcp", fmt.Sprintf("127.0.0.1:%d", srvcPort)) is.NoErr(err) // net.Dial error peer := cnet.NewPeer(ctx, conn) go func() { defer peer.Kill() // send dummy packets for i := 0; i < 2; i++ { is.NoErr(peer.Send(0x1234)) // peer.Send error } }() // we wait until Handler gracefully exits (peer was killed) peer.Handler(make(chan *cnet.PacketEvent)) wg.Done() }() } is.True(testutil.WaitWithTimeout(&wg, timeout)) // wait for all dummy peers to be done with timeout }