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cd5879f866
Cache would let the first response through and would then cap subsequent ones to whatever the cache duration was. This would lead to huge drops in TTL values: 3600 -> 20 for instance, which is not only bad, but can mess up your careful TTL planning business. This PR fixes that and applies the cache duration to all replies. As a bonus I could remove a time.Sleep() from the cache test and just check for the cache duration as the TTL on the reply. Fixes #1038
60 lines
1.4 KiB
Go
60 lines
1.4 KiB
Go
package test
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import (
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"testing"
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"github.com/coredns/coredns/plugin/proxy"
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"github.com/coredns/coredns/plugin/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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// 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, 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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// 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 10
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}
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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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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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if ttl != 10 { // as set in the Corefile
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t.Errorf("Expected TTL to be %d, got %d", 10, ttl)
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}
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}
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