c6febe6250
* Add pkg/fall for Fallthrough Move this into it's own package to facilitate tests. Important bug was fixed: make the names fully qualified. Add fall package to hosts, reverse, etcd, and fix kubernetes and any tests. The k8s tests are still as-is, might need a future cleanup.
550 lines
12 KiB
Go
550 lines
12 KiB
Go
package kubernetes
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import (
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"strings"
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"testing"
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"time"
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"github.com/mholt/caddy"
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meta "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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func TestKubernetesParse(t *testing.T) {
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tests := []struct {
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input string // Corefile data as string
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shouldErr bool // true if test case is exected to produce an error.
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expectedErrContent string // substring from the expected error. Empty for positive cases.
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expectedZoneCount int // expected count of defined zones.
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expectedNSCount int // expected count of namespaces.
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expectedResyncPeriod time.Duration // expected resync period value
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expectedLabelSelector string // expected label selector value
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expectedPodMode string
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expectedFallthrough *[]string
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expectedUpstreams []string
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}{
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// positive
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{
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`kubernetes coredns.local`,
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false,
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"",
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1,
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0,
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defaultResyncPeriod,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local test.local`,
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false,
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"",
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2,
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0,
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defaultResyncPeriod,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local {
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}`,
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false,
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"",
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1,
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0,
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defaultResyncPeriod,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local {
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endpoint http://localhost:9090
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}`,
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false,
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"",
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1,
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0,
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defaultResyncPeriod,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local {
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namespaces demo
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}`,
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false,
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"",
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1,
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1,
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defaultResyncPeriod,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local {
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namespaces demo test
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}`,
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false,
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"",
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1,
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2,
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defaultResyncPeriod,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local {
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resyncperiod 30s
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}`,
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false,
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"",
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1,
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0,
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30 * time.Second,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local {
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resyncperiod 15m
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}`,
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false,
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"",
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1,
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0,
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15 * time.Minute,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local {
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labels environment=prod
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}`,
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false,
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"",
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1,
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0,
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defaultResyncPeriod,
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"environment=prod",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local {
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labels environment in (production, staging, qa),application=nginx
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}`,
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false,
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"",
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1,
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0,
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defaultResyncPeriod,
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"application=nginx,environment in (production,qa,staging)",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local test.local {
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resyncperiod 15m
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endpoint http://localhost:8080
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namespaces demo test
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labels environment in (production, staging, qa),application=nginx
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fallthrough
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}`,
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false,
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"",
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2,
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2,
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15 * time.Minute,
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"application=nginx,environment in (production,qa,staging)",
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podModeDisabled,
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&[]string{},
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nil,
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},
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// negative
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{
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`kubernetes coredns.local {
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endpoint
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}`,
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true,
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"rong argument count or unexpected line ending",
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-1,
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-1,
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defaultResyncPeriod,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local {
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namespaces
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}`,
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true,
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"rong argument count or unexpected line ending",
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-1,
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-1,
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defaultResyncPeriod,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local {
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resyncperiod
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}`,
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true,
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"rong argument count or unexpected line ending",
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-1,
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0,
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0 * time.Minute,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local {
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resyncperiod 15
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}`,
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true,
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"unable to parse resync duration value",
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-1,
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0,
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0 * time.Second,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local {
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resyncperiod abc
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}`,
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true,
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"unable to parse resync duration value",
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-1,
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0,
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0 * time.Second,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local {
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labels
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}`,
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true,
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"rong argument count or unexpected line ending",
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-1,
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0,
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0 * time.Second,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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{
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`kubernetes coredns.local {
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labels environment in (production, qa
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}`,
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true,
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"unable to parse label selector",
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-1,
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0,
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0 * time.Second,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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// pods disabled
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{
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`kubernetes coredns.local {
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pods disabled
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}`,
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false,
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"",
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1,
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0,
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defaultResyncPeriod,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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// pods insecure
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{
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`kubernetes coredns.local {
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pods insecure
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}`,
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false,
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"",
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1,
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0,
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defaultResyncPeriod,
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"",
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podModeInsecure,
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nil,
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nil,
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},
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// pods verified
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{
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`kubernetes coredns.local {
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pods verified
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}`,
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false,
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"",
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1,
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0,
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defaultResyncPeriod,
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"",
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podModeVerified,
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nil,
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nil,
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},
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// pods invalid
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{
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`kubernetes coredns.local {
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pods giant_seed
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}`,
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true,
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"rong value for pods",
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-1,
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0,
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defaultResyncPeriod,
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"",
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podModeVerified,
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nil,
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nil,
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},
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// fallthrough with zones
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{
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`kubernetes coredns.local {
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fallthrough ip6.arpa inaddr.arpa foo.com
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}`,
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false,
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"rong argument count",
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1,
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0,
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defaultResyncPeriod,
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"",
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podModeDisabled,
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&[]string{"ip6.arpa.", "inaddr.arpa.", "foo.com."},
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nil,
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},
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// Valid upstream
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{
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`kubernetes coredns.local {
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upstream 13.14.15.16:53
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}`,
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false,
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"",
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1,
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0,
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defaultResyncPeriod,
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"",
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podModeDisabled,
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nil,
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[]string{"13.14.15.16:53"},
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},
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// Invalid upstream
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{
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`kubernetes coredns.local {
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upstream 13.14.15.16orange
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}`,
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true,
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"not an IP address or file: \"13.14.15.16orange\"",
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-1,
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0,
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defaultResyncPeriod,
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"",
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podModeDisabled,
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nil,
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nil,
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},
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}
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for i, test := range tests {
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c := caddy.NewTestController("dns", test.input)
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k8sController, opts, err := kubernetesParse(c)
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if test.shouldErr && err == nil {
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t.Errorf("Test %d: Expected error, but did not find error for input '%s'. Error was: '%v'", i, test.input, err)
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}
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if err != nil {
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if !test.shouldErr {
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t.Errorf("Test %d: Expected no error but found one for input %s. Error was: %v", i, test.input, err)
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continue
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}
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if test.shouldErr && (len(test.expectedErrContent) < 1) {
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t.Fatalf("Test %d: Test marked as expecting an error, but no expectedErrContent provided for input '%s'. Error was: '%v'", i, test.input, err)
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}
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if test.shouldErr && (test.expectedZoneCount >= 0) {
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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)
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}
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if !strings.Contains(err.Error(), test.expectedErrContent) {
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t.Errorf("Test %d: Expected error to contain: %v, found error: %v, input: %s", i, test.expectedErrContent, err, test.input)
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}
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continue
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}
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// No error was raised, so validate initialization of k8sController
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// Zones
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foundZoneCount := len(k8sController.Zones)
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if foundZoneCount != test.expectedZoneCount {
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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)
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}
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// Namespaces
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foundNSCount := len(k8sController.Namespaces)
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if foundNSCount != test.expectedNSCount {
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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)
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}
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// ResyncPeriod
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foundResyncPeriod := opts.resyncPeriod
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if foundResyncPeriod != test.expectedResyncPeriod {
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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)
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}
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// Labels
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if opts.labelSelector != nil {
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foundLabelSelectorString := meta.FormatLabelSelector(opts.labelSelector)
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if foundLabelSelectorString != test.expectedLabelSelector {
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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)
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}
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}
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// Pods
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foundPodMode := k8sController.podMode
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if foundPodMode != test.expectedPodMode {
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t.Errorf("Test %d: Expected kubernetes controller to be initialized with pod mode '%s'. Instead found pod mode '%s' for input '%s'", i, test.expectedPodMode, foundPodMode, test.input)
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}
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// fallthrough
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foundFallthrough := k8sController.Fall
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if foundFallthrough != nil {
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failed := false
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if test.expectedFallthrough == nil {
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failed = true
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} else if len(*foundFallthrough) != len(*test.expectedFallthrough) {
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failed = true
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} else {
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for i := range *foundFallthrough {
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if (*foundFallthrough)[i] != (*test.expectedFallthrough)[i] {
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failed = true
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}
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}
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}
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if failed {
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t.Errorf("Test %d: Expected kubernetes controller to be initialized with fallthrough '%v'. Instead found fallthrough '%v' for input '%s'", i, test.expectedFallthrough, foundFallthrough, test.input)
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}
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}
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// upstream
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foundUpstreams := k8sController.Proxy.Upstreams
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if test.expectedUpstreams == nil {
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if foundUpstreams != nil {
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t.Errorf("Test %d: Expected kubernetes controller to not be initialized with upstreams for input '%s'", i, test.input)
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}
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} else {
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if foundUpstreams == nil {
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t.Errorf("Test %d: Expected kubernetes controller to be initialized with upstreams for input '%s'", i, test.input)
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} else {
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if len(*foundUpstreams) != len(test.expectedUpstreams) {
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t.Errorf("Test %d: Expected kubernetes controller to be initialized with %d upstreams. Instead found %d upstreams for input '%s'", i, len(test.expectedUpstreams), len(*foundUpstreams), test.input)
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}
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for j, want := range test.expectedUpstreams {
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got := (*foundUpstreams)[j].Select().Name
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if got != want {
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t.Errorf("Test %d: Expected kubernetes controller to be initialized with upstream '%s'. Instead found upstream '%s' for input '%s'", i, want, got, test.input)
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}
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}
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}
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}
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}
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}
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func TestKubernetesEndpointsParse(t *testing.T) {
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tests := []struct {
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input string // Corefile data as string
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shouldErr bool // true if test case is exected to produce an error.
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expectedErrContent string // substring from the expected error. Empty for positive cases.
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expectedEndpointMode bool
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}{
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// valid endpoints mode
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{
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`kubernetes coredns.local {
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endpoint_pod_names
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}`,
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false,
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"",
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true,
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},
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// endpoints invalid
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{
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`kubernetes coredns.local {
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endpoint_pod_names giant_seed
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}`,
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true,
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"rong argument count or unexpected",
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false,
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},
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// endpoint not set
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{
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`kubernetes coredns.local {
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}`,
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false,
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"",
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false,
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},
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}
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for i, test := range tests {
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c := caddy.NewTestController("dns", test.input)
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k8sController, _, err := kubernetesParse(c)
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if test.shouldErr && err == nil {
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t.Errorf("Test %d: Expected error, but did not find error for input '%s'. Error was: '%v'", i, test.input, err)
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}
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if err != nil {
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if !test.shouldErr {
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t.Errorf("Test %d: Expected no error but found one for input %s. Error was: %v", i, test.input, err)
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continue
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}
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if !strings.Contains(err.Error(), test.expectedErrContent) {
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t.Errorf("Test %d: Expected error to contain: %v, found error: %v, input: %s", i, test.expectedErrContent, err, test.input)
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}
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continue
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}
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// Endpoints
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foundEndpointNameMode := k8sController.endpointNameMode
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if foundEndpointNameMode != test.expectedEndpointMode {
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t.Errorf("Test %d: Expected kubernetes controller to be initialized with endpoints mode '%v'. Instead found endpoints mode '%v' for input '%s'", i, test.expectedEndpointMode, foundEndpointNameMode, test.input)
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}
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}
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}
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