mirror of
https://github.com/coredns/coredns.git
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6966bce653
This fixes a crash when we resolve (or try to) an external CNAME when no proxy is set. Add test as well.
89 lines
2.0 KiB
Go
89 lines
2.0 KiB
Go
package test
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import (
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"io/ioutil"
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"log"
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"testing"
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"time"
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"github.com/coredns/coredns/middleware/proxy"
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"github.com/coredns/coredns/middleware/test"
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"github.com/coredns/coredns/request"
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"github.com/miekg/dns"
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)
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func TestLookupCache(t *testing.T) {
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t.Parallel()
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// Start auth. CoreDNS holding the auth zone.
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name, rm, err := test.TempFile(".", exampleOrg)
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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 ` + name + `
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}
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`
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i, err := CoreDNSServer(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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udp, _ := CoreDNSServerPorts(i, 0)
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if udp == "" {
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t.Fatalf("Could not get UDP listening port")
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}
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defer i.Stop()
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// Start caching proxy CoreDNS that we want to test.
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corefile = `example.org:0 {
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proxy . ` + udp + `
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cache
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}
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`
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i, err = CoreDNSServer(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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udp, _ = CoreDNSServerPorts(i, 0)
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if udp == "" {
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t.Fatalf("Could not get UDP listening port")
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}
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defer i.Stop()
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log.SetOutput(ioutil.Discard)
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p := proxy.NewLookup([]string{udp})
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state := request.Request{W: &test.ResponseWriter{}, Req: new(dns.Msg)}
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resp, err := p.Lookup(state, "example.org.", dns.TypeA)
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if err != nil {
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t.Fatal("Expected to receive reply, but didn't")
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}
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// expect answer section with A record in it
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if len(resp.Answer) == 0 {
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t.Fatal("Expected to at least one RR in the answer section, got none")
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}
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ttl := resp.Answer[0].Header().Ttl
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time.Sleep(2 * time.Second) // TODO(miek): meh.
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resp, err = p.Lookup(state, "example.org.", dns.TypeA)
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if err != nil {
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t.Fatal("Expected to receive reply, but didn't")
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}
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// expect answer section with A record in it
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if len(resp.Answer) == 0 {
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t.Error("Expected to at least one RR in the answer section, got none")
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}
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newTTL := resp.Answer[0].Header().Ttl
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if newTTL >= ttl {
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t.Errorf("Expected TTL to be lower than: %d, got %d", ttl, newTTL)
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}
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}
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