mirror of
https://github.com/coredns/coredns.git
synced 2025-11-03 10:43:20 -05:00
120 lines
2.8 KiB
Go
120 lines
2.8 KiB
Go
package test
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import (
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"os"
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"path/filepath"
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"testing"
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"github.com/miekg/dns"
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)
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func setupProxyTargetCoreDNS(t *testing.T, fn func(string)) {
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tmpdir, err := os.MkdirTemp(os.TempDir(), "coredns")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(tmpdir)
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content := `
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example.org. IN SOA sns.dns.icann.org. noc.dns.icann.org. 1 3600 3600 3600 3600
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google.com. IN SOA ns1.google.com. dns-admin.google.com. 1 3600 3600 3600 3600
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google.com. IN A 172.217.25.110
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`
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path := filepath.Join(tmpdir, "file")
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if err = os.WriteFile(path, []byte(content), 0644); err != nil {
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t.Fatalf("Could not write to temp file: %s", err)
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}
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defer os.Remove(path)
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corefile := `.:0 {
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file ` + path + `
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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 proxy target CoreDNS serving instance: %s", err)
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}
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defer i.Stop()
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fn(udp)
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}
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func TestLookupAutoPathErratic(t *testing.T) {
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setupProxyTargetCoreDNS(t, func(proxyPath string) {
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corefile := `.:0 {
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erratic
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autopath @erratic
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forward . ` + proxyPath + `
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debug
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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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tests := []struct {
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qname string
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expectedAnswer string
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expectedType uint16
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}{
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{"google.com.a.example.org.", "google.com.a.example.org.", dns.TypeCNAME},
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{"google.com.", "google.com.", dns.TypeA},
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}
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for i, tc := range tests {
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m := new(dns.Msg)
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// erratic always returns this search path: "a.example.org.", "b.example.org.", "".
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m.SetQuestion(tc.qname, dns.TypeA)
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r, err := dns.Exchange(m, udp)
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if err != nil {
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t.Fatalf("Test %d, failed to sent query: %q", i, err)
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}
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if len(r.Answer) == 0 {
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t.Fatalf("Test %d, answer section should have RRs", i)
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}
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if x := r.Answer[0].Header().Name; x != tc.expectedAnswer {
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t.Fatalf("Test %d, expected answer %s, got %s", i, tc.expectedAnswer, x)
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}
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if x := r.Answer[0].Header().Rrtype; x != tc.expectedType {
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t.Fatalf("Test %d, expected answer type %d, got %d", i, tc.expectedType, x)
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}
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}
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})
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}
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func TestAutoPathErraticNotLoaded(t *testing.T) {
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setupProxyTargetCoreDNS(t, func(proxyPath string) {
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corefile := `.:0 {
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autopath @erratic
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forward . ` + proxyPath + `
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debug
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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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m := new(dns.Msg)
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m.SetQuestion("google.com.a.example.org.", dns.TypeA)
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r, err := dns.Exchange(m, udp)
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if err != nil {
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t.Fatalf("Failed to sent query: %q", err)
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}
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if r.Rcode != dns.RcodeNameError {
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t.Fatalf("Expected NXDOMAIN, got %d", r.Rcode)
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}
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})
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}
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