time.Sleep(100 * time.Millisecond)

	// Write to the pipe to unblock it.
	if _, err := syscall.Write(wfd, []byte{10}); err != nil {
		log.Fatalf("failed to write to pipe: %v", err)
	}

	// Wait for the goroutine to unblock and start running.
	// This is helpful to catch incorrect information written
	// down for the syscall-blocked goroutine, since it'll start
	// executing, and that execution information will be

	}); err != nil {
		t.Fatalf("Failed to wait progress requests, err: %s, want: %d , got %d", err, wantRequestsSent, requestsSent)
	}
	pr.Add()
	clock.Step(progressRequestPeriod * 2)
	if err := pollConditionNoChange(pollPeriod, minimalNoChange, pollTimeout, func() bool {
		requestsSent = pr.progressRequestsSentCount.Load()
		return requestsSent == wantRequestsSent
	}); err != nil {

	}

	// Check that all Process' public methods work as expected with
	// "done" Process.
	if err := proc.Kill(); err != os.ErrProcessDone {
		t.Errorf("Kill: got %v, want %v", err, os.ErrProcessDone)
	}
	if err := proc.Signal(os.Kill); err != os.ErrProcessDone {
		t.Errorf("Signal: got %v, want %v", err, os.ErrProcessDone)
	}
	if _, err := proc.Wait(); !errors.Is(err, syscall.ECHILD) {

		// Solaris/Illumos have a lower limit, above which wait returns
		// EINVAL (see waitid in usr/src/uts/common/os/exit.c in
		// illumos). This is configurable via sysconf(_SC_MAXPID), but
		// we'll just take the default.
		pid = 30000-1
	}

	p, err := FindProcess(pid)
	if err != nil {
		t.Fatalf("FindProcess(math.MaxInt32) got err %v, want nil", err)
	}

	if ps, err := p.Wait(); !errors.Is(err, syscall.ECHILD) {

				t.Errorf("unexpected diff (-want, +got):\n%s", diff)
			}
		})
	}
}

func TestIsStatusEqual(t *testing.T) {
	tests := []struct {
		name string
		x, y *Status
		want bool
	}{
		{
			name: "two nil should be equal",
			x:    nil,
			y:    nil,
			want: true,
		},
		{
			name: "nil should be equal to success status",
			x:    nil,

	if fd != -1 {
		t.Errorf("open(%q)=%d, want -1", nonfile, fd)
	}
	var buf [32]byte
	r := runtime.Read(-1, unsafe.Pointer(&buf[0]), int32(len(buf)))
	if got, want := r, -int32(syscall.EBADF); got != want {
		t.Errorf("read()=%d, want %d", got, want)
	}
	w := runtime.Write(^uintptr(0), unsafe.Pointer(&buf[0]), int32(len(buf)))
	if got, want := w, -int32(syscall.EBADF); got != want {
		t.Errorf("write()=%d, want %d", got, want)
	}

		t.Fatalf("Wait succeeded, want SIGABRT")
	}
	ee, ok := err.(*exec.ExitError)
	if !ok {
		t.Fatalf("Wait err got %T %v, want exec.ExitError", ee, ee)
	}
	ws, ok := ee.Sys().(syscall.WaitStatus)
	if !ok {
		t.Fatalf("Sys got %T %v, want syscall.WaitStatus", ee.Sys(), ee.Sys())
	}
	if ws.Signal() != syscall.SIGABRT {
		t.Fatalf("Signal got %d want SIGABRT", ws.Signal())
	}
	if !ws.CoreDump() {

	}
	t.Logf("WriteString(%q) = <nil>", part1)

	wait := mustBlock(t, "Read", func() {
		b, err := lockedfile.Read(path)
		if err != nil {
			t.Errorf("Read: %v", err)
			return
		}

		const want = part1 + part2
		got := string(b)
		if got == want {
			t.Logf("Read(_) = %q", got)
		} else {
			t.Errorf("Read(_) = %q, _; want %q", got, want)
		}
	})

	_, err = f.WriteString(part2)

			sum += i
		}
		fmt.Println("Computed once:", sum)
		return sum
	})
	done := make(chan bool)
	for i := 0; i < 10; i++ {
		go func() {
			const want = 499500
			got := once()
			if got != want {
				fmt.Println("want", want, "got", got)
			}
			done <- true
		}()
	}
	for i := 0; i < 10; i++ {
		<-done
	}
	// Output:
	// Computed once: 499500
}

		if len(events) == 0 {
			return
		}
		select {
		case e := <-fx.Events:
			found := false
			for i, want := range events {
				if e.Type == want.Type &&
					(want.ID == "" || e.ID == want.ID) &&
					(want.Namespace == "" || want.Namespace == e.Namespace) &&
					(want.EndpointCount == 0 || want.EndpointCount == len(e.Endpoints)) {
					// Matched - delete event from desired
					events = slices.Delete(events, i)