fs.PrintDefaults()
	got := buf.String()
	if got != defaultOutput {
		t.Errorf("got:\n%q\nwant:\n%q", got, defaultOutput)
	}
}

// Issue 19230: validate range of Int and Uint flag values.
func TestIntFlagOverflow(t *testing.T) {
	if strconv.IntSize != 32 {
		return
	}
	ResetForTesting(nil)
	Int("i", 0, "")
	Uint("u", 0, "")
	if err := Set("i", "2147483648"); err == nil {