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package kubernetes
import (
"errors"
"net"
"reflect"
"testing"
"github.com/miekg/dns"
"k8s.io/client-go/1.5/pkg/api"
"github.com/coredns/coredns/middleware/etcd/msg"
)
func TestRecordForTXT(t *testing.T) {
k := Kubernetes{Zones: []string{"inter.webs.test"}}
r, _ := k.parseRequest("dns-version.inter.webs.test", dns.TypeTXT)
expected := DNSSchemaVersion
var svcs []msg.Service
k.recordsForTXT(r, &svcs)
if svcs[0].Text != expected {
t.Errorf("Expected result '%v'. Instead got result '%v'.", expected, svcs[0].Text)
}
}
func TestPrimaryZone(t *testing.T) {
k := Kubernetes{Zones: []string{"inter.webs.test", "inter.nets.test"}}
expected := "inter.webs.test"
result := k.PrimaryZone()
if result != expected {
t.Errorf("Expected result '%v'. Instead got result '%v'.", expected, result)
}
}
func TestIsRequestInReverseRange(t *testing.T) {
tests := []struct {
cidr string
name string
expected bool
}{
{"1.2.3.0/24", "4.3.2.1.in-addr.arpa.", true},
{"1.2.3.0/24", "5.3.2.1.in-addr.arpa.", true},
{"1.2.3.0/24", "5.4.2.1.in-addr.arpa.", false},
{"5.6.0.0/16", "5.4.2.1.in-addr.arpa.", false},
{"5.6.0.0/16", "5.4.6.5.in-addr.arpa.", true},
{"5.6.0.0/16", "5.6.0.1.in-addr.arpa.", false},
}
k := Kubernetes{Zones: []string{"inter.webs.test"}}
for _, test := range tests {
_, cidr, _ := net.ParseCIDR(test.cidr)
k.ReverseCidrs = []net.IPNet{*cidr}
result := k.isRequestInReverseRange(test.name)
if result != test.expected {
t.Errorf("Expected '%v' for '%v' in %v.", test.expected, test.name, test.cidr)
}
}
}
func TestIsNameError(t *testing.T) {
k := Kubernetes{Zones: []string{"inter.webs.test"}}
if !k.IsNameError(errNoItems) {
t.Errorf("Expected 'true' for '%v'", errNoItems)
}
if !k.IsNameError(errNsNotExposed) {
t.Errorf("Expected 'true' for '%v'", errNsNotExposed)
}
if !k.IsNameError(errInvalidRequest) {
t.Errorf("Expected 'true' for '%v'", errInvalidRequest)
}
otherErr := errors.New("Some other error occured")
if k.IsNameError(otherErr) {
t.Errorf("Expected 'true' for '%v'", otherErr)
}
}
func TestSymbolContainsWildcard(t *testing.T) {
var testdataSymbolContainsWildcard = []struct {
Symbol string
ExpectedResult bool
}{
{"mynamespace", false},
{"*", true},
{"any", true},
{"my*space", false},
{"*space", false},
{"myname*", false},
}
for _, example := range testdataSymbolContainsWildcard {
actualResult := symbolContainsWildcard(example.Symbol)
if actualResult != example.ExpectedResult {
t.Errorf("Expected SymbolContainsWildcard result '%v' for example string='%v'. Instead got result '%v'.", example.ExpectedResult, example.Symbol, actualResult)
}
}
}
func expectString(t *testing.T, function, qtype, query string, r *recordRequest, field, expected string) {
ref := reflect.ValueOf(r)
refField := reflect.Indirect(ref).FieldByName(field)
got := refField.String()
if got != expected {
t.Errorf("Expected %v(%v, \"%v\") to get %v == \"%v\". Instead got \"%v\".", function, query, qtype, field, expected, got)
}
}
func TestParseRequest(t *testing.T) {
var tcs map[string]string
k := Kubernetes{Zones: []string{"inter.webs.test"}}
f := "parseRequest"
// Test a valid SRV request
//
query := "_http._tcp.webs.mynamespace.svc.inter.webs.test."
r, e := k.parseRequest(query, dns.TypeSRV)
if e != nil {
t.Errorf("Expected no error from parseRequest(%v, \"SRV\"). Instead got '%v'.", query, e)
}
tcs = map[string]string{
"port": "http",
"protocol": "tcp",
"endpoint": "",
"service": "webs",
"namespace": "mynamespace",
"typeName": "svc",
"zone": "inter.webs.test",
}
for field, expected := range tcs {
expectString(t, f, "SRV", query, &r, field, expected)
}
// Test wildcard acceptance
//
query = "*.any.*.any.svc.inter.webs.test."
r, e = k.parseRequest(query, dns.TypeSRV)
if e != nil {
t.Errorf("Expected no error from parseRequest(\"%v\", \"SRV\"). Instead got '%v'.", query, e)
}
tcs = map[string]string{
"port": "*",
"protocol": "any",
"endpoint": "",
"service": "*",
"namespace": "any",
"typeName": "svc",
"zone": "inter.webs.test",
}
for field, expected := range tcs {
expectString(t, f, "SRV", query, &r, field, expected)
}
// Test A request of endpoint
query = "1-2-3-4.webs.mynamespace.svc.inter.webs.test."
r, e = k.parseRequest(query, dns.TypeA)
if e != nil {
t.Errorf("Expected no error from parseRequest(\"%v\", \"A\"). Instead got '%v'.", query, e)
}
tcs = map[string]string{
"port": "",
"protocol": "",
"endpoint": "1-2-3-4",
"service": "webs",
"namespace": "mynamespace",
"typeName": "svc",
"zone": "inter.webs.test",
}
for field, expected := range tcs {
expectString(t, f, "A", query, &r, field, expected)
}
// Test NS request
query = "inter.webs.test."
r, e = k.parseRequest(query, dns.TypeNS)
if e != nil {
t.Errorf("Expected no error from parseRequest(\"%v\", \"NS\"). Instead got '%v'.", query, e)
}
tcs = map[string]string{
"port": "",
"protocol": "",
"endpoint": "",
"service": "",
"namespace": "",
"typeName": "",
"zone": "inter.webs.test",
}
for field, expected := range tcs {
expectString(t, f, "NS", query, &r, field, expected)
}
// Test TXT request
query = "dns-version.inter.webs.test."
r, e = k.parseRequest(query, dns.TypeTXT)
if e != nil {
t.Errorf("Expected no error from parseRequest(\"%v\", \"TXT\"). Instead got '%v'.", query, e)
}
tcs = map[string]string{
"port": "",
"protocol": "",
"endpoint": "",
"service": "",
"namespace": "",
"typeName": "dns-version",
"zone": "inter.webs.test",
}
for field, expected := range tcs {
expectString(t, f, "TXT", query, &r, field, expected)
}
// Invalid query tests
invalidAQueries := []string{
"_http._tcp.webs.mynamespace.svc.inter.webs.test.", // A requests cannot have port or protocol
"servname.ns1.srv.inter.nets.test.", // A requests must have zone that matches corefile
}
for _, q := range invalidAQueries {
_, e = k.parseRequest(q, dns.TypeA)
if e == nil {
t.Errorf("Expected error from %v(\"%v\", \"A\").", f, q)
}
}
invalidSRVQueries := []string{
"webs.mynamespace.svc.inter.webs.test.", // SRV requests must have port and protocol
"_http._pcp.webs.mynamespace.svc.inter.webs.test.", // SRV protocol must be tcp or udp
"_http._tcp.ep.webs.ns.svc.inter.webs.test.", // SRV requests cannot have an endpoint
"_*._*.webs.mynamespace.svc.inter.webs.test.", // SRV request with invalid wildcards
"_http._tcp",
"_tcp.test.",
".",
}
for _, q := range invalidSRVQueries {
_, e = k.parseRequest(q, dns.TypeSRV)
if e == nil {
t.Errorf("Expected error from %v(\"%v\", \"SRV\").", f, q)
}
}
}
func TestEndpointHostname(t *testing.T) {
var tests = []struct {
ip string
hostname string
expected string
}{
{"10.11.12.13", "", "10-11-12-13"},
{"10.11.12.13", "epname", "epname"},
}
for _, test := range tests {
result := endpointHostname(api.EndpointAddress{IP: test.ip, Hostname: test.hostname})
if result != test.expected {
t.Errorf("Expected endpoint name for (ip:%v hostname:%v) to be '%v', but got '%v'", test.ip, test.hostname, test.expected, result)
}
}
}
func TestIpFromPodName(t *testing.T) {
var tests = []struct {
ip string
expected string
}{
{"10-11-12-13", "10.11.12.13"},
{"1-2-3-4", "1.2.3.4"},
{"1-2-3--A-B-C", "1:2:3::A:B:C"},
}
for _, test := range tests {
result := ipFromPodName(test.ip)
if result != test.expected {
t.Errorf("Expected ip for podname '%v' to be '%v', but got '%v'", test.ip, test.expected, result)
}
}
}
|
