consul/agent/dns/router_virtual_test.go

123 lines
3.0 KiB
Go

// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: BUSL-1.1
package dns
import (
"github.com/hashicorp/consul/agent/discovery"
"github.com/miekg/dns"
"github.com/stretchr/testify/mock"
"net"
"testing"
)
func Test_HandleRequest_Virtual(t *testing.T) {
testCases := []HandleTestCase{
{
name: "test A 'virtual.' query, ipv4 response",
request: &dns.Msg{
MsgHdr: dns.MsgHdr{
Opcode: dns.OpcodeQuery,
},
Question: []dns.Question{
{
Name: "c000020a.virtual.dc1.consul", // "intentionally missing the trailing dot"
Qtype: dns.TypeA,
Qclass: dns.ClassINET,
},
},
},
configureDataFetcher: func(fetcher discovery.CatalogDataFetcher) {
fetcher.(*discovery.MockCatalogDataFetcher).On("FetchVirtualIP",
mock.Anything, mock.Anything).Return(&discovery.Result{
Node: &discovery.Location{Address: "240.0.0.2"},
Type: discovery.ResultTypeVirtual,
}, nil)
},
validateAndNormalizeExpected: true,
response: &dns.Msg{
MsgHdr: dns.MsgHdr{
Opcode: dns.OpcodeQuery,
Response: true,
Authoritative: true,
},
Compress: true,
Question: []dns.Question{
{
Name: "c000020a.virtual.dc1.consul.",
Qtype: dns.TypeA,
Qclass: dns.ClassINET,
},
},
Answer: []dns.RR{
&dns.A{
Hdr: dns.RR_Header{
Name: "c000020a.virtual.dc1.consul.",
Rrtype: dns.TypeA,
Class: dns.ClassINET,
Ttl: 123,
},
A: net.ParseIP("240.0.0.2"),
},
},
},
},
{
name: "test A 'virtual.' query, ipv6 response",
// Since we asked for an A record, the AAAA record that resolves from the address is attached as an extra
request: &dns.Msg{
MsgHdr: dns.MsgHdr{
Opcode: dns.OpcodeQuery,
},
Question: []dns.Question{
{
Name: "20010db800010002cafe000000001337.virtual.dc1.consul",
Qtype: dns.TypeA,
Qclass: dns.ClassINET,
},
},
},
configureDataFetcher: func(fetcher discovery.CatalogDataFetcher) {
fetcher.(*discovery.MockCatalogDataFetcher).On("FetchVirtualIP",
mock.Anything, mock.Anything).Return(&discovery.Result{
Node: &discovery.Location{Address: "2001:db8:1:2:cafe::1337"},
Type: discovery.ResultTypeVirtual,
}, nil)
},
validateAndNormalizeExpected: true,
response: &dns.Msg{
MsgHdr: dns.MsgHdr{
Opcode: dns.OpcodeQuery,
Response: true,
Authoritative: true,
},
Compress: true,
Question: []dns.Question{
{
Name: "20010db800010002cafe000000001337.virtual.dc1.consul.",
Qtype: dns.TypeA,
Qclass: dns.ClassINET,
},
},
Extra: []dns.RR{
&dns.AAAA{
Hdr: dns.RR_Header{
Name: "20010db800010002cafe000000001337.virtual.dc1.consul.",
Rrtype: dns.TypeAAAA,
Class: dns.ClassINET,
Ttl: 123,
},
AAAA: net.ParseIP("2001:db8:1:2:cafe::1337"),
},
},
},
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
runHandleTestCases(t, tc)
})
}
}