package dnsrec

import "testing"

// Route53 stores a TXT value as a quoted character-string. SPF and DMARC
// values contain spaces and semicolons, so an unquoted value is either
// rejected or silently stored as something no resolver will match — which
// looks like "DNS published, verification still pending" forever.
func TestTXTValuesAreQuoted(t *testing.T) {
	got := quoteTXT(`v=DMARC1; p=none; adkim=s; aspf=s`)
	want := `"v=DMARC1; p=none; adkim=s; aspf=s"`
	if got != want {
		t.Fatalf("quoteTXT = %s, want %s", got, want)
	}
}

// A TXT value with an embedded quote must be escaped, not truncated.
func TestTXTQuotingEscapes(t *testing.T) {
	if got := quoteTXT(`a"b`); got != `"a\"b"` {
		t.Fatalf("quoteTXT = %s, want %s", got, `"a\"b"`)
	}
}

// A CNAME or MX value is NOT quoted — quoting one produces a record Route53
// accepts and no resolver can follow.
func TestNonTXTValuesAreNotQuoted(t *testing.T) {
	for _, typ := range []string{TypeCNAME, TypeMX} {
		if got := renderValue(typ, "x.dkim.amazonses.com"); got != "x.dkim.amazonses.com" {
			t.Fatalf("renderValue(%s) = %q, want unquoted", typ, got)
		}
	}
	if got := renderValue(TypeTXT, "hello"); got != `"hello"` {
		t.Fatalf("renderValue(TXT) = %q, want quoted", got)
	}
}