mirror of
https://github.com/coredns/coredns.git
synced 2025-10-31 02:03:20 -04:00
117 lines
3.0 KiB
Go
117 lines
3.0 KiB
Go
package erratic
|
|
|
|
import (
|
|
"context"
|
|
"testing"
|
|
|
|
"github.com/coredns/coredns/plugin/pkg/dnstest"
|
|
"github.com/coredns/coredns/plugin/test"
|
|
|
|
"github.com/miekg/dns"
|
|
)
|
|
|
|
func TestErraticDrop(t *testing.T) {
|
|
e := &Erratic{drop: 2} // 50% drops
|
|
|
|
tests := []struct {
|
|
rrtype uint16
|
|
expectedCode int
|
|
expectedErr error
|
|
drop bool
|
|
}{
|
|
{rrtype: dns.TypeA, expectedCode: dns.RcodeSuccess, expectedErr: nil, drop: true},
|
|
{rrtype: dns.TypeA, expectedCode: dns.RcodeSuccess, expectedErr: nil, drop: false},
|
|
{rrtype: dns.TypeAAAA, expectedCode: dns.RcodeSuccess, expectedErr: nil, drop: true},
|
|
{rrtype: dns.TypeHINFO, expectedCode: dns.RcodeServerFailure, expectedErr: nil, drop: false},
|
|
}
|
|
|
|
ctx := context.TODO()
|
|
|
|
for i, tc := range tests {
|
|
req := new(dns.Msg)
|
|
req.SetQuestion("example.org.", tc.rrtype)
|
|
|
|
rec := dnstest.NewRecorder(&test.ResponseWriter{})
|
|
code, err := e.ServeDNS(ctx, rec, req)
|
|
|
|
if err != tc.expectedErr {
|
|
t.Errorf("Test %d: Expected error %q, but got %q", i, tc.expectedErr, err)
|
|
}
|
|
if code != tc.expectedCode {
|
|
t.Errorf("Test %d: Expected status code %d, but got %d", i, tc.expectedCode, code)
|
|
}
|
|
|
|
if tc.drop && rec.Msg != nil {
|
|
t.Errorf("Test %d: Expected dropped message, but got %q", i, rec.Msg.Question[0].Name)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestErraticTruncate(t *testing.T) {
|
|
e := &Erratic{truncate: 2} // 50% drops
|
|
|
|
tests := []struct {
|
|
expectedCode int
|
|
expectedErr error
|
|
truncate bool
|
|
}{
|
|
{expectedCode: dns.RcodeSuccess, expectedErr: nil, truncate: true},
|
|
{expectedCode: dns.RcodeSuccess, expectedErr: nil, truncate: false},
|
|
}
|
|
|
|
ctx := context.TODO()
|
|
|
|
for i, tc := range tests {
|
|
req := new(dns.Msg)
|
|
req.SetQuestion("example.org.", dns.TypeA)
|
|
|
|
rec := dnstest.NewRecorder(&test.ResponseWriter{})
|
|
code, err := e.ServeDNS(ctx, rec, req)
|
|
|
|
if err != tc.expectedErr {
|
|
t.Errorf("Test %d: Expected error %q, but got %q", i, tc.expectedErr, err)
|
|
}
|
|
if code != tc.expectedCode {
|
|
t.Errorf("Test %d: Expected status code %d, but got %d", i, tc.expectedCode, code)
|
|
}
|
|
|
|
if tc.truncate && !rec.Msg.Truncated {
|
|
t.Errorf("Test %d: Expected truncated message, but got %q", i, rec.Msg.Question[0].Name)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestAxfr(t *testing.T) {
|
|
e := &Erratic{truncate: 0} // nothing, just check if we can get an axfr
|
|
|
|
ctx := context.TODO()
|
|
|
|
req := new(dns.Msg)
|
|
req.SetQuestion("example.org.", dns.TypeAXFR)
|
|
|
|
rec := dnstest.NewRecorder(&test.ResponseWriter{})
|
|
_, err := e.ServeDNS(ctx, rec, req)
|
|
if err != nil {
|
|
t.Errorf("Failed to set up AXFR: %s", err)
|
|
}
|
|
if x := rec.Msg.Answer[0].Header().Rrtype; x != dns.TypeSOA {
|
|
t.Errorf("Expected for record to be %d, got %d", dns.TypeSOA, x)
|
|
}
|
|
}
|
|
|
|
func TestErratic(t *testing.T) {
|
|
e := &Erratic{drop: 0, delay: 0}
|
|
|
|
ctx := context.TODO()
|
|
|
|
req := new(dns.Msg)
|
|
req.SetQuestion("example.org.", dns.TypeA)
|
|
|
|
rec := dnstest.NewRecorder(&test.ResponseWriter{})
|
|
e.ServeDNS(ctx, rec, req)
|
|
|
|
if rec.Msg.Answer[0].Header().Rrtype != dns.TypeA {
|
|
t.Errorf("Expected A response, got %d type", rec.Msg.Answer[0].Header().Rrtype)
|
|
}
|
|
}
|