Example #1
0
func TestGoroutineCounts(t *testing.T) {
	if runtime.GOOS == "openbsd" {
		testenv.SkipFlaky(t, 15156)
	}
	c := make(chan int)
	for i := 0; i < 100; i++ {
		if i%10 == 0 {
			go func1(c)
			continue
		}
		if i%2 == 0 {
			go func2(c)
			continue
		}
		go func3(c)
	}
	time.Sleep(10 * time.Millisecond) // let goroutines block on channel

	var prof bytes.Buffer
	Lookup("goroutine").WriteTo(&prof, 1)

	parseProfile(t, prof, func(p *ProfileTest) {
		if len(p.Sample) < 4 {
			t.Errorf("few samples, got %v", len(p.Sample))
		}
		if p.Sample[0].Value[0] != 50 || p.Sample[1].Value[0] != 40 || p.Sample[2].Value[0] != 10 || p.Sample[3].Value[0] != 1 {
			t.Errorf("expected sorted goroutine counts:\n 50, 40, 10, 1\ngot:\n", p.Sample[0].Value[0], p.Sample[1].Value[0], p.Sample[2].Value[0], p.Sample[3].Value[0])
		}
	})
	close(c)

	time.Sleep(10 * time.Millisecond) // let goroutines exit
}
Example #2
0
func TestGoroutineCounts(t *testing.T) {
	if runtime.GOOS == "openbsd" {
		testenv.SkipFlaky(t, 15156)
	}
	c := make(chan int)
	for i := 0; i < 100; i++ {
		if i%10 == 0 {
			go func1(c)
			continue
		}
		if i%2 == 0 {
			go func2(c)
			continue
		}
		go func3(c)
	}
	time.Sleep(10 * time.Millisecond) // let goroutines block on channel

	var w bytes.Buffer
	Lookup("goroutine").WriteTo(&w, 1)
	prof := w.String()

	if !containsInOrder(prof, "\n50 @ ", "\n40 @", "\n10 @", "\n1 @") {
		t.Errorf("expected sorted goroutine counts:\n%s", prof)
	}

	close(c)

	time.Sleep(10 * time.Millisecond) // let goroutines exit
}
Example #3
0
// TestGdbBacktrace tests that gdb can unwind the stack correctly
// using only the DWARF debug info.
func TestGdbBacktrace(t *testing.T) {
	t.Parallel()
	checkGdbEnvironment(t)
	checkGdbVersion(t)

	if runtime.GOOS == "netbsd" {
		testenv.SkipFlaky(t, 15603)
	}

	dir, err := ioutil.TempDir("", "go-build")
	if err != nil {
		t.Fatalf("failed to create temp directory: %v", err)
	}
	defer os.RemoveAll(dir)

	// Build the source code.
	src := filepath.Join(dir, "main.go")
	err = ioutil.WriteFile(src, []byte(backtraceSource), 0644)
	if err != nil {
		t.Fatalf("failed to create file: %v", err)
	}
	cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", "a.exe")
	cmd.Dir = dir
	out, err := testEnv(cmd).CombinedOutput()
	if err != nil {
		t.Fatalf("building source %v\n%s", err, out)
	}

	// Execute gdb commands.
	args := []string{"-nx", "-batch",
		"-ex", "set startup-with-shell off",
		"-ex", "break main.eee",
		"-ex", "run",
		"-ex", "backtrace",
		"-ex", "continue",
		filepath.Join(dir, "a.exe"),
	}
	got, _ := exec.Command("gdb", args...).CombinedOutput()

	// Check that the backtrace matches the source code.
	bt := []string{
		"eee",
		"ddd",
		"ccc",
		"bbb",
		"aaa",
		"main",
	}
	for i, name := range bt {
		s := fmt.Sprintf("#%v.*main\\.%v", i, name)
		re := regexp.MustCompile(s)
		if found := re.Find(got) != nil; !found {
			t.Errorf("could not find '%v' in backtrace", s)
			t.Fatalf("gdb output:\n%v", string(got))
		}
	}
}
Example #4
0
func TestDialerDualStack(t *testing.T) {
	// This test is known to be flaky. Don't frighten regular
	// users about it; only fail on the build dashboard.
	if testenv.Builder() == "" {
		testenv.SkipFlaky(t, 13324)
	}
	if !supportsIPv4 || !supportsIPv6 {
		t.Skip("both IPv4 and IPv6 are required")
	}

	closedPortDelay, expectClosedPortDelay := dialClosedPort()
	if closedPortDelay > expectClosedPortDelay {
		t.Errorf("got %v; want <= %v", closedPortDelay, expectClosedPortDelay)
	}

	origTestHookLookupIP := testHookLookupIP
	defer func() { testHookLookupIP = origTestHookLookupIP }()
	testHookLookupIP = lookupLocalhost
	handler := func(dss *dualStackServer, ln Listener) {
		for {
			c, err := ln.Accept()
			if err != nil {
				return
			}
			c.Close()
		}
	}

	var timeout = 150*time.Millisecond + closedPortDelay
	for _, dualstack := range []bool{false, true} {
		dss, err := newDualStackServer()
		if err != nil {
			t.Fatal(err)
		}
		defer dss.teardown()
		if err := dss.buildup(handler); err != nil {
			t.Fatal(err)
		}

		d := &Dialer{DualStack: dualstack, Timeout: timeout}
		for range dss.lns {
			c, err := d.Dial("tcp", JoinHostPort("localhost", dss.port))
			if err != nil {
				t.Error(err)
				continue
			}
			switch addr := c.LocalAddr().(*TCPAddr); {
			case addr.IP.To4() != nil:
				dss.teardownNetwork("tcp4")
			case addr.IP.To16() != nil && addr.IP.To4() == nil:
				dss.teardownNetwork("tcp6")
			}
			c.Close()
		}
	}
}
Example #5
0
func TestAcceptTimeout(t *testing.T) {
	testenv.SkipFlaky(t, 17948)
	t.Parallel()

	switch runtime.GOOS {
	case "plan9":
		t.Skipf("not supported on %s", runtime.GOOS)
	}

	ln, err := newLocalListener("tcp")
	if err != nil {
		t.Fatal(err)
	}
	defer ln.Close()

	var wg sync.WaitGroup
	for i, tt := range acceptTimeoutTests {
		if tt.timeout < 0 {
			wg.Add(1)
			go func() {
				defer wg.Done()
				d := Dialer{Timeout: 100 * time.Millisecond}
				c, err := d.Dial(ln.Addr().Network(), ln.Addr().String())
				if err != nil {
					t.Error(err)
					return
				}
				c.Close()
			}()
		}

		if err := ln.(*TCPListener).SetDeadline(time.Now().Add(tt.timeout)); err != nil {
			t.Fatalf("$%d: %v", i, err)
		}
		for j, xerr := range tt.xerrs {
			for {
				c, err := ln.Accept()
				if xerr != nil {
					if perr := parseAcceptError(err); perr != nil {
						t.Errorf("#%d/%d: %v", i, j, perr)
					}
					if nerr, ok := err.(Error); !ok || !nerr.Timeout() {
						t.Fatalf("#%d/%d: %v", i, j, err)
					}
				}
				if err == nil {
					c.Close()
					time.Sleep(10 * time.Millisecond)
					continue
				}
				break
			}
		}
	}
	wg.Wait()
}
Example #6
0
func TestReadUnixgramWithUnnamedSocket(t *testing.T) {
	if !testableNetwork("unixgram") {
		t.Skip("unixgram test")
	}
	if runtime.GOOS == "openbsd" {
		testenv.SkipFlaky(t, 15157)
	}

	addr := testUnixAddr()
	la, err := ResolveUnixAddr("unixgram", addr)
	if err != nil {
		t.Fatal(err)
	}
	c, err := ListenUnixgram("unixgram", la)
	if err != nil {
		t.Fatal(err)
	}
	defer func() {
		c.Close()
		os.Remove(addr)
	}()

	off := make(chan bool)
	data := [5]byte{1, 2, 3, 4, 5}
	go func() {
		defer func() { off <- true }()
		s, err := syscall.Socket(syscall.AF_UNIX, syscall.SOCK_DGRAM, 0)
		if err != nil {
			t.Error(err)
			return
		}
		defer syscall.Close(s)
		rsa := &syscall.SockaddrUnix{Name: addr}
		if err := syscall.Sendto(s, data[:], 0, rsa); err != nil {
			t.Error(err)
			return
		}
	}()

	<-off
	b := make([]byte, 64)
	c.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
	n, from, err := c.ReadFrom(b)
	if err != nil {
		t.Fatal(err)
	}
	if from != nil {
		t.Fatalf("unexpected peer address: %v", from)
	}
	if !bytes.Equal(b[:n], data[:]) {
		t.Fatalf("got %v; want %v", b[:n], data[:])
	}
}
Example #7
0
func TestGoroutineCounts(t *testing.T) {
	if runtime.GOOS == "openbsd" {
		testenv.SkipFlaky(t, 15156)
	}
	c := make(chan int)
	for i := 0; i < 100; i++ {
		if i%10 == 0 {
			go func1(c)
			continue
		}
		if i%2 == 0 {
			go func2(c)
			continue
		}
		go func3(c)
	}
	time.Sleep(10 * time.Millisecond) // let goroutines block on channel

	var w bytes.Buffer
	goroutineProf := Lookup("goroutine")

	// Check debug profile
	goroutineProf.WriteTo(&w, 1)
	prof := w.String()

	if !containsInOrder(prof, "\n50 @ ", "\n40 @", "\n10 @", "\n1 @") {
		t.Errorf("expected sorted goroutine counts:\n%s", prof)
	}

	// Check proto profile
	w.Reset()
	goroutineProf.WriteTo(&w, 0)
	p, err := profile.Parse(&w)
	if err != nil {
		t.Errorf("error parsing protobuf profile: %v", err)
	}
	if err := p.CheckValid(); err != nil {
		t.Errorf("protobuf profile is invalid: %v", err)
	}
	if !containsCounts(p, []int64{50, 40, 10, 1}) {
		t.Errorf("expected count profile to contain goroutines with counts %v, got %v",
			[]int64{50, 40, 10, 1}, p)
	}

	close(c)

	time.Sleep(10 * time.Millisecond) // let goroutines exit
}
Example #8
0
func TestDialTimeoutMaxDuration(t *testing.T) {
	if runtime.GOOS == "openbsd" {
		testenv.SkipFlaky(t, 15157)
	}

	ln, err := newLocalListener("tcp")
	if err != nil {
		t.Fatal(err)
	}
	defer ln.Close()

	for i, tt := range dialTimeoutMaxDurationTests {
		ch := make(chan error)
		max := time.NewTimer(250 * time.Millisecond)
		defer max.Stop()
		go func() {
			d := Dialer{Timeout: tt.timeout}
			if tt.delta != 0 {
				d.Deadline = time.Now().Add(tt.delta)
			}
			c, err := d.Dial(ln.Addr().Network(), ln.Addr().String())
			if err == nil {
				c.Close()
			}
			ch <- err
		}()

		select {
		case <-max.C:
			t.Fatalf("#%d: Dial didn't return in an expected time", i)
		case err := <-ch:
			if perr := parseDialError(err); perr != nil {
				t.Error(perr)
			}
			if err != nil {
				t.Errorf("#%d: %v", i, err)
			}
		}
	}
}
Example #9
0
func TestCgoCallbackGC(t *testing.T) {
	switch runtime.GOOS {
	case "plan9", "windows":
		t.Skipf("no pthreads on %s", runtime.GOOS)
	case "freebsd":
		testenv.SkipFlaky(t, 16396)
	}
	if testing.Short() {
		switch {
		case runtime.GOOS == "dragonfly":
			t.Skip("see golang.org/issue/11990")
		case runtime.GOOS == "linux" && runtime.GOARCH == "arm":
			t.Skip("too slow for arm builders")
		case runtime.GOOS == "linux" && (runtime.GOARCH == "mips64" || runtime.GOARCH == "mips64le"):
			t.Skip("too slow for mips64x builders")
		}
	}
	got := runTestProg(t, "testprogcgo", "CgoCallbackGC")
	want := "OK\n"
	if got != want {
		t.Fatalf("expected %q, but got:\n%s", want, got)
	}
}
Example #10
0
func TestDialTimeoutFDLeak(t *testing.T) {
	switch runtime.GOOS {
	case "plan9":
		t.Skipf("%s does not have full support of socktest", runtime.GOOS)
	case "openbsd":
		testenv.SkipFlaky(t, 15157)
	}

	const T = 100 * time.Millisecond

	switch runtime.GOOS {
	case "plan9", "windows":
		origTestHookDialChannel := testHookDialChannel
		testHookDialChannel = func() { time.Sleep(2 * T) }
		defer func() { testHookDialChannel = origTestHookDialChannel }()
		if runtime.GOOS == "plan9" {
			break
		}
		fallthrough
	default:
		sw.Set(socktest.FilterConnect, func(so *socktest.Status) (socktest.AfterFilter, error) {
			time.Sleep(2 * T)
			return nil, errTimeout
		})
		defer sw.Set(socktest.FilterConnect, nil)
	}

	// Avoid tracking open-close jitterbugs between netFD and
	// socket that leads to confusion of information inside
	// socktest.Switch.
	// It may happen when the Dial call bumps against TCP
	// simultaneous open. See selfConnect in tcpsock_posix.go.
	defer func() { sw.Set(socktest.FilterClose, nil) }()
	var mu sync.Mutex
	var attempts int
	sw.Set(socktest.FilterClose, func(so *socktest.Status) (socktest.AfterFilter, error) {
		mu.Lock()
		attempts++
		mu.Unlock()
		return nil, nil
	})

	const N = 100
	var wg sync.WaitGroup
	wg.Add(N)
	for i := 0; i < N; i++ {
		go func() {
			defer wg.Done()
			// This dial never starts to send any SYN
			// segment because of above socket filter and
			// test hook.
			c, err := DialTimeout("tcp", "127.0.0.1:0", T)
			if err == nil {
				t.Errorf("unexpectedly established: tcp:%s->%s", c.LocalAddr(), c.RemoteAddr())
				c.Close()
			}
		}()
	}
	wg.Wait()
	if attempts < N {
		t.Errorf("got %d; want >= %d", attempts, N)
	}
}