dt.I = 271828
	dt.J = OnTheFly{3}
	dt.I_nil = nil
	dt.M = map[string]int{"one": 1, "two": 2}
	dt.T = [3]int{11, 22, 33}
	dt.S = []string{"hi", "joe"}
	return dt
}

func TestDebugStruct(t *testing.T) {
	if debugFunc == nil {
		return
	}
	Register(OnTheFly{})
	dt := newDT()
	b := new(bytes.Buffer)
	err := NewEncoder(b).Encode(dt)
	if err != nil {
		t.Fatal("encode:", err)