mirror of
https://github.com/coredns/coredns.git
synced 2025-10-30 17:53:21 -04:00
a6d232a622
* dont require/allow "_" prefix for srv wildcard fields * streamline parse/validation of req name * removing nametemplate * error when zone not found, loopify unit tests
317 lines
7.2 KiB
Go
317 lines
7.2 KiB
Go
package kubernetes
|
|
|
|
import (
|
|
"strings"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/mholt/caddy"
|
|
unversionedapi "k8s.io/client-go/1.5/pkg/api/unversioned"
|
|
)
|
|
|
|
func TestKubernetesParse(t *testing.T) {
|
|
tests := []struct {
|
|
description string // Human-facing description of test case
|
|
input string // Corefile data as string
|
|
shouldErr bool // true if test case is exected to produce an error.
|
|
expectedErrContent string // substring from the expected error. Empty for positive cases.
|
|
expectedZoneCount int // expected count of defined zones.
|
|
expectedNSCount int // expected count of namespaces.
|
|
expectedResyncPeriod time.Duration // expected resync period value
|
|
expectedLabelSelector string // expected label selector value
|
|
}{
|
|
// positive
|
|
{
|
|
"kubernetes keyword with one zone",
|
|
`kubernetes coredns.local`,
|
|
false,
|
|
"",
|
|
1,
|
|
0,
|
|
defaultResyncPeriod,
|
|
"",
|
|
},
|
|
{
|
|
"kubernetes keyword with multiple zones",
|
|
`kubernetes coredns.local test.local`,
|
|
false,
|
|
"",
|
|
2,
|
|
0,
|
|
defaultResyncPeriod,
|
|
"",
|
|
},
|
|
{
|
|
"kubernetes keyword with zone and empty braces",
|
|
`kubernetes coredns.local {
|
|
}`,
|
|
false,
|
|
"",
|
|
1,
|
|
0,
|
|
defaultResyncPeriod,
|
|
"",
|
|
},
|
|
{
|
|
"endpoint keyword with url",
|
|
`kubernetes coredns.local {
|
|
endpoint http://localhost:9090
|
|
}`,
|
|
false,
|
|
"",
|
|
1,
|
|
0,
|
|
defaultResyncPeriod,
|
|
"",
|
|
},
|
|
{
|
|
"namespaces keyword with one namespace",
|
|
`kubernetes coredns.local {
|
|
namespaces demo
|
|
}`,
|
|
false,
|
|
"",
|
|
1,
|
|
1,
|
|
defaultResyncPeriod,
|
|
"",
|
|
},
|
|
{
|
|
"namespaces keyword with multiple namespaces",
|
|
`kubernetes coredns.local {
|
|
namespaces demo test
|
|
}`,
|
|
false,
|
|
"",
|
|
1,
|
|
2,
|
|
defaultResyncPeriod,
|
|
"",
|
|
},
|
|
{
|
|
"resync period in seconds",
|
|
`kubernetes coredns.local {
|
|
resyncperiod 30s
|
|
}`,
|
|
false,
|
|
"",
|
|
1,
|
|
0,
|
|
30 * time.Second,
|
|
"",
|
|
},
|
|
{
|
|
"resync period in minutes",
|
|
`kubernetes coredns.local {
|
|
resyncperiod 15m
|
|
}`,
|
|
false,
|
|
"",
|
|
1,
|
|
0,
|
|
15 * time.Minute,
|
|
"",
|
|
},
|
|
{
|
|
"basic label selector",
|
|
`kubernetes coredns.local {
|
|
labels environment=prod
|
|
}`,
|
|
false,
|
|
"",
|
|
1,
|
|
0,
|
|
defaultResyncPeriod,
|
|
"environment=prod",
|
|
},
|
|
{
|
|
"multi-label selector",
|
|
`kubernetes coredns.local {
|
|
labels environment in (production, staging, qa),application=nginx
|
|
}`,
|
|
false,
|
|
"",
|
|
1,
|
|
0,
|
|
defaultResyncPeriod,
|
|
"application=nginx,environment in (production,qa,staging)",
|
|
},
|
|
{
|
|
"fully specified valid config",
|
|
`kubernetes coredns.local test.local {
|
|
resyncperiod 15m
|
|
endpoint http://localhost:8080
|
|
namespaces demo test
|
|
labels environment in (production, staging, qa),application=nginx
|
|
}`,
|
|
false,
|
|
"",
|
|
2,
|
|
2,
|
|
15 * time.Minute,
|
|
"application=nginx,environment in (production,qa,staging)",
|
|
},
|
|
// negative
|
|
{
|
|
"no kubernetes keyword",
|
|
"",
|
|
true,
|
|
"Kubernetes setup called without keyword 'kubernetes' in Corefile",
|
|
-1,
|
|
-1,
|
|
defaultResyncPeriod,
|
|
"",
|
|
},
|
|
{
|
|
"kubernetes keyword without a zone",
|
|
`kubernetes`,
|
|
true,
|
|
"Zone name must be provided for kubernetes middleware",
|
|
-1,
|
|
0,
|
|
defaultResyncPeriod,
|
|
"",
|
|
},
|
|
{
|
|
"endpoint keyword without an endpoint value",
|
|
`kubernetes coredns.local {
|
|
endpoint
|
|
}`,
|
|
true,
|
|
"Wrong argument count or unexpected line ending after 'endpoint'",
|
|
-1,
|
|
-1,
|
|
defaultResyncPeriod,
|
|
"",
|
|
},
|
|
{
|
|
"namespace keyword without a namespace value",
|
|
`kubernetes coredns.local {
|
|
namespaces
|
|
}`,
|
|
true,
|
|
"Parse error: Wrong argument count or unexpected line ending after 'namespaces'",
|
|
-1,
|
|
-1,
|
|
defaultResyncPeriod,
|
|
"",
|
|
},
|
|
{
|
|
"resyncperiod keyword without a duration value",
|
|
`kubernetes coredns.local {
|
|
resyncperiod
|
|
}`,
|
|
true,
|
|
"Wrong argument count or unexpected line ending after 'resyncperiod'",
|
|
-1,
|
|
0,
|
|
0 * time.Minute,
|
|
"",
|
|
},
|
|
{
|
|
"resync period no units",
|
|
`kubernetes coredns.local {
|
|
resyncperiod 15
|
|
}`,
|
|
true,
|
|
"Unable to parse resync duration value. Value provided was ",
|
|
-1,
|
|
0,
|
|
0 * time.Second,
|
|
"",
|
|
},
|
|
{
|
|
"resync period invalid",
|
|
`kubernetes coredns.local {
|
|
resyncperiod abc
|
|
}`,
|
|
true,
|
|
"Unable to parse resync duration value. Value provided was ",
|
|
-1,
|
|
0,
|
|
0 * time.Second,
|
|
"",
|
|
},
|
|
{
|
|
"labels with no selector value",
|
|
`kubernetes coredns.local {
|
|
labels
|
|
}`,
|
|
true,
|
|
"Wrong argument count or unexpected line ending after 'labels'",
|
|
-1,
|
|
0,
|
|
0 * time.Second,
|
|
"",
|
|
},
|
|
{
|
|
"labels with invalid selector value",
|
|
`kubernetes coredns.local {
|
|
labels environment in (production, qa
|
|
}`,
|
|
true,
|
|
"Unable to parse label selector. Value provided was",
|
|
-1,
|
|
0,
|
|
0 * time.Second,
|
|
"",
|
|
},
|
|
}
|
|
|
|
for i, test := range tests {
|
|
c := caddy.NewTestController("dns", test.input)
|
|
k8sController, err := kubernetesParse(c)
|
|
|
|
if test.shouldErr && err == nil {
|
|
t.Errorf("Test %d: Expected error, but did not find error for input '%s'. Error was: '%v'", i, test.input, err)
|
|
}
|
|
|
|
if err != nil {
|
|
if !test.shouldErr {
|
|
t.Errorf("Test %d: Expected no error but found one for input %s. Error was: %v", i, test.input, err)
|
|
continue
|
|
}
|
|
|
|
if test.shouldErr && (len(test.expectedErrContent) < 1) {
|
|
t.Fatalf("Test %d: Test marked as expecting an error, but no expectedErrContent provided for input '%s'. Error was: '%v'", i, test.input, err)
|
|
}
|
|
|
|
if test.shouldErr && (test.expectedZoneCount >= 0) {
|
|
t.Errorf("Test %d: Test marked as expecting an error, but provides value for expectedZoneCount!=-1 for input '%s'. Error was: '%v'", i, test.input, err)
|
|
}
|
|
|
|
if !strings.Contains(err.Error(), test.expectedErrContent) {
|
|
t.Errorf("Test %d: Expected error to contain: %v, found error: %v, input: %s", i, test.expectedErrContent, err, test.input)
|
|
}
|
|
continue
|
|
}
|
|
|
|
// No error was raised, so validate initialization of k8sController
|
|
// Zones
|
|
foundZoneCount := len(k8sController.Zones)
|
|
if foundZoneCount != test.expectedZoneCount {
|
|
t.Errorf("Test %d: Expected kubernetes controller to be initialized with %d zones, instead found %d zones: '%v' for input '%s'", i, test.expectedZoneCount, foundZoneCount, k8sController.Zones, test.input)
|
|
}
|
|
|
|
// Namespaces
|
|
foundNSCount := len(k8sController.Namespaces)
|
|
if foundNSCount != test.expectedNSCount {
|
|
t.Errorf("Test %d: Expected kubernetes controller to be initialized with %d namespaces. Instead found %d namespaces: '%v' for input '%s'", i, test.expectedNSCount, foundNSCount, k8sController.Namespaces, test.input)
|
|
}
|
|
|
|
// ResyncPeriod
|
|
foundResyncPeriod := k8sController.ResyncPeriod
|
|
if foundResyncPeriod != test.expectedResyncPeriod {
|
|
t.Errorf("Test %d: Expected kubernetes controller to be initialized with resync period '%s'. Instead found period '%s' for input '%s'", i, test.expectedResyncPeriod, foundResyncPeriod, test.input)
|
|
}
|
|
|
|
// Labels
|
|
if k8sController.LabelSelector != nil {
|
|
foundLabelSelectorString := unversionedapi.FormatLabelSelector(k8sController.LabelSelector)
|
|
if foundLabelSelectorString != test.expectedLabelSelector {
|
|
t.Errorf("Test %d: Expected kubernetes controller to be initialized with label selector '%s'. Instead found selector '%s' for input '%s'", i, test.expectedLabelSelector, foundLabelSelectorString, test.input)
|
|
}
|
|
}
|
|
}
|
|
}
|