if err != nil {
		t.Fatal(err)
	}
	res.Body.Close()
	if string(all) != "hi" {
		t.Errorf("Body = %q; want hi", all)
	}
}

// Issue 6157, Issue 6685
func TestCodesPreventingContentTypeAndBody(t *testing.T) {
	for _, code := range []int{StatusNotModified, StatusNoContent} {
		ht := newHandlerTest(HandlerFunc(func(w ResponseWriter, r *Request) {
			if r.URL.Path == "/header" {