Run integration tests with -race (fixes #1043)

build.go

@@ -44,6 +44,7 @@ var (
 	goos      string
 	noupgrade bool
 	version   string
+	race      bool
 )
 
 const minGoVersion = 1.3
@@ -65,8 +66,9 @@ func main() {
 
 	flag.StringVar(&goarch, "goarch", runtime.GOARCH, "GOARCH")
 	flag.StringVar(&goos, "goos", runtime.GOOS, "GOOS")
-	flag.BoolVar(&noupgrade, "no-upgrade", false, "Disable upgrade functionality")
+	flag.BoolVar(&noupgrade, "no-upgrade", noupgrade, "Disable upgrade functionality")
 	flag.StringVar(&version, "version", getVersion(), "Set compiled in version string")
+	flag.BoolVar(&race, "race", race, "Use race detector")
 	flag.Parse()
 
 	switch goarch {
@@ -182,6 +184,9 @@ func install(pkg string, tags []string) {
 	if len(tags) > 0 {
 		args = append(args, "-tags", strings.Join(tags, ","))
 	}
+	if race {
+		args = append(args, "-race")
+	}
 	args = append(args, pkg)
 	setBuildEnv()
 	runPrint("go", args...)
@@ -193,6 +198,9 @@ func build(pkg string, tags []string) {
 	if len(tags) > 0 {
 		args = append(args, "-tags", strings.Join(tags, ","))
 	}
+	if race {
+		args = append(args, "-race")
+	}
 	args = append(args, pkg)
 	setBuildEnv()
 	runPrint("go", args...)

build.sh

@@ -125,7 +125,7 @@ case "${1:-default}" in
 				&& cp -r /tmp/syncthing syncthing \
 				&& cd syncthing \
 				&& ./build.sh clean \
-				&& ./build.sh \
+				&& go run build.go -race \
 				&& export GOPATH=$(pwd)/Godeps/_workspace:$GOPATH \
 				&& cd test \
 				&& go test -tags integration -v'

test/common_test.go

@@ -18,6 +18,8 @@
 package integration_test
 
 import (
+	"bufio"
+	"bytes"
 	"crypto/md5"
 	"encoding/json"
 	"errors"
@@ -94,9 +96,31 @@ func (p *syncthingProcess) start() error {
 	}
 }
 
-func (p *syncthingProcess) stop() {
+func (p *syncthingProcess) stop() error {
 	p.cmd.Process.Signal(os.Interrupt)
 	p.cmd.Wait()
+
+	fd, err := os.Open(p.log)
+	if err != nil {
+		return err
+	}
+	defer fd.Close()
+
+	raceCondition := []byte("DATA RACE")
+	sc := bufio.NewScanner(fd)
+	for sc.Scan() {
+		line := sc.Bytes()
+		if bytes.Contains(line, raceCondition) {
+			name := fmt.Sprintf("race-%d.out", time.Now().Unix())
+			cp, _ := os.Create(name)
+			fd.Seek(0, os.SEEK_SET)
+			io.Copy(cp, fd)
+			cp.Close()
+
+			return errors.New("Race condition detected in " + name)
+		}
+	}
+	return nil
 }
 
 func (p *syncthingProcess) get(path string) (*http.Response, error) {

test/filetype_test.go

@@ -77,7 +77,7 @@ func TestFiletypeChange(t *testing.T) {
 	}
 	err = receiver.start()
 	if err != nil {
-		sender.stop()
+		_ = sender.stop()
 		t.Fatal(err)
 	}
 
@@ -88,24 +88,30 @@ func TestFiletypeChange(t *testing.T) {
 				time.Sleep(time.Second)
 				continue
 			}
-			sender.stop()
-			receiver.stop()
+			_ = sender.stop()
+			_ = receiver.stop()
 			t.Fatal(err)
 		}
 
 		curComp := comp[id2]
 
 		if curComp == 100 {
-			sender.stop()
-			receiver.stop()
+			_ = sender.stop()
+			_ = receiver.stop()
 			break
 		}
 
 		time.Sleep(time.Second)
 	}
 
-	sender.stop()
-	receiver.stop()
+	err = sender.stop()
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = receiver.stop()
+	if err != nil {
+		t.Fatal(err)
+	}
 
 	log.Println("Comparing directories...")
 	err = compareDirectories("s1", "s2")
@@ -143,7 +149,7 @@ func TestFiletypeChange(t *testing.T) {
 
 	err = receiver.start()
 	if err != nil {
-		sender.stop()
+		_ = sender.stop()
 		t.Fatal(err)
 	}
 
@@ -154,24 +160,28 @@ func TestFiletypeChange(t *testing.T) {
 				time.Sleep(time.Second)
 				continue
 			}
-			sender.stop()
-			receiver.stop()
+			_ = sender.stop()
+			_ = receiver.stop()
 			t.Fatal(err)
 		}
 
 		curComp := comp[id2]
 
 		if curComp == 100 {
-			sender.stop()
-			receiver.stop()
 			break
 		}
 
 		time.Sleep(time.Second)
 	}
 
-	sender.stop()
-	receiver.stop()
+	err = sender.stop()
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = receiver.stop()
+	if err != nil {
+		t.Fatal(err)
+	}
 
 	log.Println("Comparing directories...")
 	err = compareDirectories("s1", "s2")

test/httpstress_test.go

@@ -120,10 +120,13 @@ func TestStressHTTP(t *testing.T) {
 	}()
 
 	err = <-errChan
+	if err != nil {
+		t.Error(err)
+	}
 
 	t.Logf("%.01f reqs/sec", float64(counter)/time.Since(t0).Seconds())
 
-	sender.stop()
+	err = sender.stop()
 	if err != nil {
 		t.Error(err)
 	}

test/reconnect_test.go

@@ -73,7 +73,7 @@ func testRestartDuringTransfer(t *testing.T, restartSender, restartReceiver bool
 	}
 	err = receiver.start()
 	if err != nil {
-		sender.stop()
+		_ = sender.stop()
 		t.Fatal(err)
 	}
 
@@ -85,28 +85,40 @@ func testRestartDuringTransfer(t *testing.T, restartSender, restartReceiver bool
 				time.Sleep(250 * time.Millisecond)
 				continue
 			}
-			sender.stop()
-			receiver.stop()
+			_ = sender.stop()
+			_ = receiver.stop()
 			t.Fatal(err)
 		}
 
 		curComp := comp[id2]
 
 		if curComp == 100 {
-			sender.stop()
-			receiver.stop()
+			err = sender.stop()
+			if err != nil {
+				t.Fatal(err)
+			}
+			err = receiver.stop()
+			if err != nil {
+				t.Fatal(err)
+			}
 			break
 		}
 
 		if curComp > prevComp {
 			if restartReceiver {
 				log.Printf("Stopping receiver...")
-				receiver.stop()
+				err = receiver.stop()
+				if err != nil {
+					t.Fatal(err)
+				}
 			}
 
 			if restartSender {
 				log.Printf("Stopping sender...")
-				sender.stop()
+				err = sender.stop()
+				if err != nil {
+					t.Fatal(err)
+				}
 			}
 
 			var wg sync.WaitGroup
@@ -139,8 +151,14 @@ func testRestartDuringTransfer(t *testing.T, restartSender, restartReceiver bool
 		time.Sleep(250 * time.Millisecond)
 	}
 
-	sender.stop()
-	receiver.stop()
+	err = sender.stop()
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = receiver.stop()
+	if err != nil {
+		t.Fatal(err)
+	}
 
 	log.Println("Comparing directories...")
 	err = compareDirectories("s1", "s2")

test/symlink_test.go

@@ -122,7 +122,7 @@ func TestSymlinks(t *testing.T) {
 	}
 	err = receiver.start()
 	if err != nil {
-		sender.stop()
+		_ = sender.stop()
 		t.Fatal(err)
 	}
 
@@ -133,24 +133,28 @@ func TestSymlinks(t *testing.T) {
 				time.Sleep(time.Second)
 				continue
 			}
-			sender.stop()
-			receiver.stop()
+			_ = sender.stop()
+			_ = receiver.stop()
 			t.Fatal(err)
 		}
 
 		curComp := comp[id2]
 
 		if curComp == 100 {
-			sender.stop()
-			receiver.stop()
 			break
 		}
 
 		time.Sleep(time.Second)
 	}
 
-	sender.stop()
-	receiver.stop()
+	err = sender.stop()
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = receiver.stop()
+	if err != nil {
+		t.Fatal(err)
+	}
 
 	log.Println("Comparing directories...")
 	err = compareDirectories("s1", "s2")
@@ -236,7 +240,7 @@ func TestSymlinks(t *testing.T) {
 
 	err = receiver.start()
 	if err != nil {
-		sender.stop()
+		_ = sender.stop()
 		t.Fatal(err)
 	}
 
@@ -247,24 +251,28 @@ func TestSymlinks(t *testing.T) {
 				time.Sleep(time.Second)
 				continue
 			}
-			sender.stop()
-			receiver.stop()
+			_ = sender.stop()
+			_ = receiver.stop()
 			t.Fatal(err)
 		}
 
 		curComp := comp[id2]
 
 		if curComp == 100 {
-			sender.stop()
-			receiver.stop()
 			break
 		}
 
 		time.Sleep(time.Second)
 	}
 
-	sender.stop()
-	receiver.stop()
+	err = sender.stop()
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = receiver.stop()
+	if err != nil {
+		t.Fatal(err)
+	}
 
 	log.Println("Comparing directories...")
 	err = compareDirectories("s1", "s2")