Add parse test for DS record

parse_test.go

@@ -274,6 +274,28 @@ func TestParseLOC(t *testing.T) {
 	}
 }
 
+func TestParseDS(t *testing.T) {
+	dt := map[string]string{
+		"example.net. 3600 IN DS 40692 12 3 22261A8B0E0D799183E35E24E2AD6BB58533CBA7E3B14D659E9CA09B 2071398F":
+			"example.net.\t3600\tIN\tDS\t40692 12 3 22261A8B0E0D799183E35E24E2AD6BB58533CBA7E3B14D659E9CA09B2071398F",
+	}
+	for i, o := range dt {
+		rr, e := NewRR(i)
+		if e != nil {
+			t.Log("Failed to parse RR: " + e.Error())
+			t.Fail()
+			continue
+		}
+		if rr.String() != o {
+			t.Logf("`%s' should be equal to\n`%s', but is     `%s'\n", i, o, rr.String())
+			t.Fail()
+		} else {
+			t.Logf("RR is OK: `%s'", rr.String())
+		}
+	}
+}
+
+
 func TestQuotes(t *testing.T) {
 	tests := map[string]string{
 		`t.example.com. IN TXT "a bc"`: "t.example.com.\t3600\tIN\tTXT\t\"a bc\"",