func queryA(t *testing.T, c *cachingResolver, rr, domain, expected string) *dns.Msg {
// Set up the response from the given RR (if any).
if rr != "" {
back := c.back.(*TestResolver)
back.response = newReply(mustNewRR(t, rr))
}
tr := util.NewTestTrace(t)
defer tr.Finish()
req := newQuery(domain, dns.TypeA)
resp, err := c.Query(req, tr)
if err != nil {
t.Fatalf("query failed: %v", err)
}
a := resp.Answer[0].(*dns.A)
if a.A.String() != expected {
t.Errorf("expected %s, got %v", expected, a.A)
}
if !reflect.DeepEqual(req.Question, resp.Question) {
t.Errorf("question mis-match: request %v, response %v",
req.Question, resp.Question)
}
return resp
}
func queryFail(t *testing.T, c *cachingResolver) *dns.Msg {
back := c.back.(*TestResolver)
back.response = &dns.Msg{}
back.response.Response = true
back.response.Rcode = dns.RcodeNameError
tr := util.NewTestTrace(t)
defer tr.Finish()
req := newQuery("doesnotexist.", dns.TypeA)
resp, err := c.Query(req, tr)
if err != nil {
t.Fatalf("query failed: %v", err)
}
return resp
}