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package test
import (
"io/ioutil"
"testing"
"time"
"github.com/coredns/coredns/plugin/test"
"github.com/miekg/dns"
)
func TestZoneReload(t *testing.T) {
name, rm, err := test.TempFile(".", exampleOrg)
if err != nil {
t.Fatalf("Failed to create zone: %s", err)
}
defer rm()
// Corefile with two stanzas
corefile := `
example.org:0 {
file ` + name + ` {
reload 0.1s
}
}
example.net:0 {
file ` + name + `
}`
i, udp, _, err := CoreDNSServerAndPorts(corefile)
if err != nil {
t.Fatalf("Could not get CoreDNS serving instance: %s", err)
}
defer i.Stop()
m := new(dns.Msg)
m.SetQuestion("example.org.", dns.TypeA)
resp, err := dns.Exchange(m, udp)
if err != nil {
t.Fatalf("Expected to receive reply, but didn't: %s", err)
}
if len(resp.Answer) != 2 {
t.Fatalf("Expected two RR in answer section got %d", len(resp.Answer))
}
// Remove RR from the Apex
ioutil.WriteFile(name, []byte(exampleOrgUpdated), 0644)
time.Sleep(150 * time.Millisecond) // reload time
resp, err = dns.Exchange(m, udp)
if err != nil {
t.Fatal("Expected to receive reply, but didn't")
}
if len(resp.Answer) != 1 {
t.Fatalf("Expected two RR in answer section got %d", len(resp.Answer))
}
}
const exampleOrgUpdated = `; example.org test file
example.org. IN SOA sns.dns.icann.org. noc.dns.icann.org. 2016082541 7200 3600 1209600 3600
example.org. IN NS b.iana-servers.net.
example.org. IN NS a.iana-servers.net.
example.org. IN A 127.0.0.2
`
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