mirror of
https://github.com/coredns/coredns.git
synced 2025-11-03 18:53:13 -05:00
117 lines
3.0 KiB
Go
117 lines
3.0 KiB
Go
package erratic
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import (
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"context"
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"testing"
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"github.com/coredns/coredns/plugin/pkg/dnstest"
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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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func TestErraticDrop(t *testing.T) {
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e := &Erratic{drop: 2} // 50% drops
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tests := []struct {
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rrtype uint16
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expectedCode int
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expectedErr error
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drop bool
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}{
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{rrtype: dns.TypeA, expectedCode: dns.RcodeSuccess, expectedErr: nil, drop: true},
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{rrtype: dns.TypeA, expectedCode: dns.RcodeSuccess, expectedErr: nil, drop: false},
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{rrtype: dns.TypeAAAA, expectedCode: dns.RcodeSuccess, expectedErr: nil, drop: true},
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{rrtype: dns.TypeHINFO, expectedCode: dns.RcodeServerFailure, expectedErr: nil, drop: false},
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}
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ctx := context.TODO()
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for i, tc := range tests {
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req := new(dns.Msg)
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req.SetQuestion("example.org.", tc.rrtype)
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rec := dnstest.NewRecorder(&test.ResponseWriter{})
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code, err := e.ServeDNS(ctx, rec, req)
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if err != tc.expectedErr {
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t.Errorf("Test %d: Expected error %q, but got %q", i, tc.expectedErr, err)
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}
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if code != tc.expectedCode {
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t.Errorf("Test %d: Expected status code %d, but got %d", i, tc.expectedCode, code)
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}
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if tc.drop && rec.Msg != nil {
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t.Errorf("Test %d: Expected dropped message, but got %q", i, rec.Msg.Question[0].Name)
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}
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}
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}
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func TestErraticTruncate(t *testing.T) {
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e := &Erratic{truncate: 2} // 50% drops
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tests := []struct {
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expectedCode int
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expectedErr error
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truncate bool
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}{
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{expectedCode: dns.RcodeSuccess, expectedErr: nil, truncate: true},
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{expectedCode: dns.RcodeSuccess, expectedErr: nil, truncate: false},
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}
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ctx := context.TODO()
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for i, tc := range tests {
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req := new(dns.Msg)
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req.SetQuestion("example.org.", dns.TypeA)
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rec := dnstest.NewRecorder(&test.ResponseWriter{})
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code, err := e.ServeDNS(ctx, rec, req)
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if err != tc.expectedErr {
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t.Errorf("Test %d: Expected error %q, but got %q", i, tc.expectedErr, err)
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}
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if code != tc.expectedCode {
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t.Errorf("Test %d: Expected status code %d, but got %d", i, tc.expectedCode, code)
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}
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if tc.truncate && !rec.Msg.Truncated {
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t.Errorf("Test %d: Expected truncated message, but got %q", i, rec.Msg.Question[0].Name)
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}
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}
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}
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func TestAxfr(t *testing.T) {
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e := &Erratic{truncate: 0} // nothing, just check if we can get an axfr
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ctx := context.TODO()
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req := new(dns.Msg)
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req.SetQuestion("example.org.", dns.TypeAXFR)
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rec := dnstest.NewRecorder(&test.ResponseWriter{})
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_, err := e.ServeDNS(ctx, rec, req)
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if err != nil {
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t.Errorf("Failed to set up AXFR: %s", err)
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}
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if x := rec.Msg.Answer[0].Header().Rrtype; x != dns.TypeSOA {
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t.Errorf("Expected for record to be %d, got %d", dns.TypeSOA, x)
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}
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}
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func TestErratic(t *testing.T) {
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e := &Erratic{drop: 0, delay: 0}
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ctx := context.TODO()
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req := new(dns.Msg)
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req.SetQuestion("example.org.", dns.TypeA)
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rec := dnstest.NewRecorder(&test.ResponseWriter{})
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e.ServeDNS(ctx, rec, req)
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if rec.Msg.Answer[0].Header().Rrtype != dns.TypeA {
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t.Errorf("Expected A response, got %d type", rec.Msg.Answer[0].Header().Rrtype)
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}
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}
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