Merge pull request #34 from libp2p/fix/transport

fix: cleanup transport suite
libp2p · Jul 23, 2021 · dfda146 · dfda146
2 parents 9aed2da + 75a6c48
commit dfda146
Showing 1 changed file with 107 additions and 99 deletions.
diff --git a/p2p/transport/testsuite/stream_suite.go b/p2p/transport/testsuite/stream_suite.go
@@ -7,7 +7,6 @@ import (
 	"io"
 	"io/ioutil"
 	"os"
-	"runtime/debug"
 	"strconv"
 	"sync"
 	"testing"
@@ -82,23 +81,13 @@ func randBuf(size int) []byte {
 	return randomness[start : start+size]
 }
 
-func checkErr(t *testing.T, err error) {
-	t.Helper()
-	if err != nil {
-		debug.PrintStack()
-		// TODO: not safe to call in parallel
-		t.Fatal(err)
-	}
-}
-
 func debugLog(t *testing.T, s string, args ...interface{}) {
 	if VerboseDebugging {
 		t.Logf(s, args...)
 	}
 }
 
 func echoStream(t *testing.T, s mux.MuxedStream) {
-	defer s.Close()
 	// echo everything
 	var err error
 	if VerboseDebugging {
@@ -123,42 +112,45 @@ func (lw *logWriter) Write(buf []byte) (int, error) {
 	return lw.W.Write(buf)
 }
 
-func goServe(t *testing.T, l transport.Listener) (done func()) {
-	closed := make(chan struct{}, 1)
+func echo(t *testing.T, c transport.CapableConn) {
+	var wg sync.WaitGroup
+	defer wg.Wait()
+	for {
+		str, err := c.AcceptStream()
+		if err != nil {
+			break
+		}
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			defer str.Close()
+			echoStream(t, str)
+		}()
+	}
+}
 
-	go func() {
-		for {
-			c, err := l.Accept()
-			if err != nil {
-				select {
-				case <-closed:
-					return // closed naturally.
-				default:
-					checkErr(t, err)
-				}
-			}
+func serve(t *testing.T, l transport.Listener) {
+	var wg sync.WaitGroup
+	defer wg.Wait()
 
-			debugLog(t, "accepted connection")
-			go func() {
-				for {
-					str, err := c.AcceptStream()
-					if err != nil {
-						break
-					}
-					go echoStream(t, str)
-				}
-			}()
+	for {
+		c, err := l.Accept()
+		if err != nil {
+			return
 		}
-	}()
 
-	return func() {
-		closed <- struct{}{}
+		wg.Add(1)
+		debugLog(t, "accepted connection")
+		go func() {
+			defer wg.Done()
+			defer c.Close()
+			echo(t, c)
+		}()
 	}
 }
 
 func SubtestStress(t *testing.T, ta, tb transport.Transport, maddr ma.Multiaddr, peerA peer.ID, opt Options) {
 	msgsize := 1 << 11
-	errs := make(chan error) // dont block anything.
 
 	rateLimitN := 5000 // max of 5k funcs, because -race has 8k max.
 	rateLimitChan := make(chan struct{}, rateLimitN)
@@ -180,7 +172,7 @@ func SubtestStress(t *testing.T, ta, tb transport.Transport, maddr ma.Multiaddr,
 			bufs <- buf
 			debugLog(t, "%p writing %d bytes (message %d/%d #%x)", s, len(buf), i, opt.MsgNum, buf[:3])
 			if _, err := s.Write(buf); err != nil {
-				errs <- fmt.Errorf("s.Write(buf): %s", err)
+				t.Errorf("s.Write(buf): %s", err)
 				continue
 			}
 		}
@@ -196,12 +188,12 @@ func SubtestStress(t *testing.T, ta, tb transport.Transport, maddr ma.Multiaddr,
 			debugLog(t, "%p reading %d bytes (message %d/%d #%x)", s, len(buf1), i-1, opt.MsgNum, buf1[:3])
 
 			if _, err := io.ReadFull(s, buf2); err != nil {
-				errs <- fmt.Errorf("io.ReadFull(s, buf2): %s", err)
+				t.Errorf("io.ReadFull(s, buf2): %s", err)
 				debugLog(t, "%p failed to read %d bytes (message %d/%d #%x)", s, len(buf1), i-1, opt.MsgNum, buf1[:3])
 				continue
 			}
 			if !bytes.Equal(buf1, buf2) {
-				errs <- fmt.Errorf("buffers not equal (%x != %x)", buf1[:3], buf2[:3])
+				t.Errorf("buffers not equal (%x != %x)", buf1[:3], buf2[:3])
 			}
 		}
 	}
@@ -211,7 +203,7 @@ func SubtestStress(t *testing.T, ta, tb transport.Transport, maddr ma.Multiaddr,
 
 		s, err := c.OpenStream(context.Background())
 		if err != nil {
-			errs <- fmt.Errorf("failed to create NewStream: %s", err)
+			t.Errorf("failed to create NewStream: %s", err)
 			return
 		}
 
@@ -228,68 +220,67 @@ func SubtestStress(t *testing.T, ta, tb transport.Transport, maddr ma.Multiaddr,
 	openConnAndRW := func() {
 		debugLog(t, "openConnAndRW")
 
+		var wg sync.WaitGroup
+		defer wg.Wait()
+
 		l, err := ta.Listen(maddr)
-		checkErr(t, err)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer l.Close()
 
-		done := goServe(t, l)
-		defer done()
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			serve(t, l)
+		}()
 
 		c, err := tb.Dial(context.Background(), l.Multiaddr(), peerA)
-		checkErr(t, err)
+		if err != nil {
+			t.Error(err)
+			return
+		}
 
 		// serve the outgoing conn, because some muxers assume
 		// that we _always_ call serve. (this is an error?)
+		wg.Add(1)
 		go func() {
+			defer wg.Done()
+			defer c.Close()
 			debugLog(t, "serving connection")
-			for {
-				str, err := c.AcceptStream()
-				if err != nil {
-					break
-				}
-				go echoStream(t, str)
-			}
+			echo(t, c)
 		}()
 
-		var wg sync.WaitGroup
+		var openWg sync.WaitGroup
 		for i := 0; i < opt.StreamNum; i++ {
-			wg.Add(1)
+			openWg.Add(1)
 			go rateLimit(func() {
-				defer wg.Done()
+				defer openWg.Done()
 				openStreamAndRW(c)
 			})
 		}
-		wg.Wait()
-		c.Close()
-	}
-
-	openConnsAndRW := func() {
-		debugLog(t, "openConnsAndRW, %d conns", opt.ConnNum)
-
-		var wg sync.WaitGroup
-		for i := 0; i < opt.ConnNum; i++ {
-			wg.Add(1)
-			go rateLimit(func() {
-				defer wg.Done()
-				openConnAndRW()
-			})
-		}
-		wg.Wait()
+		openWg.Wait()
 	}
 
-	go func() {
-		openConnsAndRW()
-		close(errs) // done
-	}()
+	debugLog(t, "openConnsAndRW, %d conns", opt.ConnNum)
 
-	for err := range errs {
-		t.Error(err)
+	var wg sync.WaitGroup
+	defer wg.Wait()
+	for i := 0; i < opt.ConnNum; i++ {
+		wg.Add(1)
+		go rateLimit(func() {
+			defer wg.Done()
+			openConnAndRW()
+		})
 	}
-
 }
 
 func SubtestStreamOpenStress(t *testing.T, ta, tb transport.Transport, maddr ma.Multiaddr, peerA peer.ID) {
 	l, err := ta.Listen(maddr)
-	checkErr(t, err)
+	if err != nil {
+		t.Fatal(err)
+	}
 	defer l.Close()
 
 	count := 10000
@@ -311,8 +302,13 @@ func SubtestStreamOpenStress(t *testing.T, ta, tb transport.Transport, maddr ma.
 		accepted <- err
 	}()
 	connB, err = tb.Dial(context.Background(), l.Multiaddr(), peerA)
-	checkErr(t, err)
-	checkErr(t, <-accepted)
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = <-accepted
+	if err != nil {
+		t.Fatal(err)
+	}
 
 	defer func() {
 		if connA != nil {
@@ -379,22 +375,36 @@ func SubtestStreamOpenStress(t *testing.T, ta, tb transport.Transport, maddr ma.
 }
 
 func SubtestStreamReset(t *testing.T, ta, tb transport.Transport, maddr ma.Multiaddr, peerA peer.ID) {
+	var wg sync.WaitGroup
+	defer wg.Wait()
+
 	l, err := ta.Listen(maddr)
-	checkErr(t, err)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer l.Close()
 
-	done := make(chan struct{}, 2)
+	wg.Add(1)
 	go func() {
+		defer wg.Done()
+
 		muxa, err := l.Accept()
-		checkErr(t, err)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		defer muxa.Close()
 
 		s, err := muxa.OpenStream(context.Background())
 		if err != nil {
-			panic(err)
+			t.Error(err)
+			return
 		}
+		defer s.Close()
 
 		// Some transports won't open the stream until we write. That's
 		// fine.
-		s.Write([]byte("foo"))
+		_, _ = s.Write([]byte("foo"))
 
 		time.Sleep(time.Millisecond * 50)
 
@@ -403,22 +413,20 @@ func SubtestStreamReset(t *testing.T, ta, tb transport.Transport, maddr ma.Multi
 			t.Error("should have failed to write")
 		}
 
-		s.Close()
-		done <- struct{}{}
 	}()
 
 	muxb, err := tb.Dial(context.Background(), l.Multiaddr(), peerA)
-	checkErr(t, err)
-
-	go func() {
-		str, err := muxb.AcceptStream()
-		checkErr(t, err)
-		str.Reset()
-		done <- struct{}{}
-	}()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer muxb.Close()
 
-	<-done
-	<-done
+	str, err := muxb.AcceptStream()
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	str.Reset()
 }
 
 func SubtestStress1Conn1Stream1Msg(t *testing.T, ta, tb transport.Transport, maddr ma.Multiaddr, peerA peer.ID) {