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https://github.com/coredns/coredns.git
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59 lines
1.6 KiB
Go
59 lines
1.6 KiB
Go
package test
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import (
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"testing"
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"github.com/coredns/coredns/plugin/test"
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"github.com/miekg/dns"
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)
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// Zone with a CNAME whose target does not exist in the zone.
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const exampleOrgDanglingCNAME = `; example.org test file
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$TTL 3600
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@ IN SOA sns.dns.icann.org. noc.dns.icann.org. 2015082541 7200 3600 1209600 3600
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@ IN NS b.iana-servers.net.
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name IN CNAME name2.example.org.
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`
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// A negative (NXDOMAIN) answer produced by following a CNAME to a
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// non-existent in-zone name must carry the zone SOA in the authority
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// section, per RFC 2308, just like querying that name directly.
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// See https://github.com/coredns/coredns/issues/6385.
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func TestZoneDanglingCNAMENegativeAuthority(t *testing.T) {
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t.Parallel()
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zoneFile, rm, err := test.TempFile(".", exampleOrgDanglingCNAME)
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if err != nil {
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t.Fatalf("Failed to create zone: %s", err)
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}
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defer rm()
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corefile := `example.org:0 {
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file ` + zoneFile + `
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}`
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i, udp, _, err := CoreDNSServerAndPorts(corefile)
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if err != nil {
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t.Fatalf("Could not get CoreDNS serving instance: %s", err)
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}
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defer i.Stop()
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m := new(dns.Msg)
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m.SetQuestion("name.example.org.", dns.TypeA)
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resp, err := dns.Exchange(m, udp)
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if err != nil {
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t.Fatalf("Expected to receive reply, but didn't: %s", err)
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}
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if resp.Rcode != dns.RcodeNameError {
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t.Errorf("Expected NXDOMAIN, got %s", dns.RcodeToString[resp.Rcode])
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}
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if len(resp.Ns) != 1 {
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t.Fatalf("Expected 1 record in authority section, got %d: %v", len(resp.Ns), resp.Ns)
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}
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if _, ok := resp.Ns[0].(*dns.SOA); !ok {
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t.Errorf("Expected SOA in authority section, got %T: %v", resp.Ns[0], resp.Ns[0])
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}
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}
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