defer dnsWaitGroup.Wait()

	txts, err := LookupTXT("golang.rsc.io")
	if err != nil {
		t.Fatal(err)
	}
	slices.Sort(txts)
	want := []string{
		strings.Repeat("abcdefghijklmnopqrstuvwxyABCDEFGHJIKLMNOPQRSTUVWXY", 10),
		"gophers rule",
	}
	if !reflect.DeepEqual(txts, want) {
		t.Fatalf("LookupTXT golang.rsc.io incorrect\nhave %q\nwant %q", txts, want)
	}
}