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-rw-r--r--plugin/kubernetes/setup_test.go473
1 files changed, 473 insertions, 0 deletions
diff --git a/plugin/kubernetes/setup_test.go b/plugin/kubernetes/setup_test.go
new file mode 100644
index 000000000..2fdc38a9c
--- /dev/null
+++ b/plugin/kubernetes/setup_test.go
@@ -0,0 +1,473 @@
+package kubernetes
+
+import (
+ "strings"
+ "testing"
+ "time"
+
+ "github.com/mholt/caddy"
+ "k8s.io/client-go/1.5/pkg/api/unversioned"
+)
+
+func TestKubernetesParse(t *testing.T) {
+ tests := []struct {
+ 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
+ expectedPodMode string
+ expectedFallthrough bool
+ expectedUpstreams []string
+ }{
+ // positive
+ {
+ `kubernetes coredns.local`,
+ false,
+ "",
+ 1,
+ 0,
+ defaultResyncPeriod,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local test.local`,
+ false,
+ "",
+ 2,
+ 0,
+ defaultResyncPeriod,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local {
+}`,
+ false,
+ "",
+ 1,
+ 0,
+ defaultResyncPeriod,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local {
+ endpoint http://localhost:9090
+}`,
+ false,
+ "",
+ 1,
+ 0,
+ defaultResyncPeriod,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local {
+ namespaces demo
+}`,
+ false,
+ "",
+ 1,
+ 1,
+ defaultResyncPeriod,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local {
+ namespaces demo test
+}`,
+ false,
+ "",
+ 1,
+ 2,
+ defaultResyncPeriod,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local {
+ resyncperiod 30s
+}`,
+ false,
+ "",
+ 1,
+ 0,
+ 30 * time.Second,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local {
+ resyncperiod 15m
+}`,
+ false,
+ "",
+ 1,
+ 0,
+ 15 * time.Minute,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local {
+ labels environment=prod
+}`,
+ false,
+ "",
+ 1,
+ 0,
+ defaultResyncPeriod,
+ "environment=prod",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local {
+ labels environment in (production, staging, qa),application=nginx
+}`,
+ false,
+ "",
+ 1,
+ 0,
+ defaultResyncPeriod,
+ "application=nginx,environment in (production,qa,staging)",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local test.local {
+ resyncperiod 15m
+ endpoint http://localhost:8080
+ namespaces demo test
+ labels environment in (production, staging, qa),application=nginx
+ fallthrough
+}`,
+ false,
+ "",
+ 2,
+ 2,
+ 15 * time.Minute,
+ "application=nginx,environment in (production,qa,staging)",
+ podModeDisabled,
+ true,
+ nil,
+ },
+ // negative
+ {
+ `kubernetes coredns.local {
+ endpoint
+}`,
+ true,
+ "rong argument count or unexpected line ending",
+ -1,
+ -1,
+ defaultResyncPeriod,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local {
+ namespaces
+}`,
+ true,
+ "rong argument count or unexpected line ending",
+ -1,
+ -1,
+ defaultResyncPeriod,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local {
+ resyncperiod
+}`,
+ true,
+ "rong argument count or unexpected line ending",
+ -1,
+ 0,
+ 0 * time.Minute,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local {
+ resyncperiod 15
+}`,
+ true,
+ "unable to parse resync duration value",
+ -1,
+ 0,
+ 0 * time.Second,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local {
+ resyncperiod abc
+}`,
+ true,
+ "unable to parse resync duration value",
+ -1,
+ 0,
+ 0 * time.Second,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local {
+ labels
+}`,
+ true,
+ "rong argument count or unexpected line ending",
+ -1,
+ 0,
+ 0 * time.Second,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ {
+ `kubernetes coredns.local {
+ labels environment in (production, qa
+}`,
+ true,
+ "unable to parse label selector",
+ -1,
+ 0,
+ 0 * time.Second,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ // pods disabled
+ {
+ `kubernetes coredns.local {
+ pods disabled
+}`,
+ false,
+ "",
+ 1,
+ 0,
+ defaultResyncPeriod,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ // pods insecure
+ {
+ `kubernetes coredns.local {
+ pods insecure
+}`,
+ false,
+ "",
+ 1,
+ 0,
+ defaultResyncPeriod,
+ "",
+ podModeInsecure,
+ false,
+ nil,
+ },
+ // pods verified
+ {
+ `kubernetes coredns.local {
+ pods verified
+}`,
+ false,
+ "",
+ 1,
+ 0,
+ defaultResyncPeriod,
+ "",
+ podModeVerified,
+ false,
+ nil,
+ },
+ // pods invalid
+ {
+ `kubernetes coredns.local {
+ pods giant_seed
+}`,
+ true,
+ "rong value for pods",
+ -1,
+ 0,
+ defaultResyncPeriod,
+ "",
+ podModeVerified,
+ false,
+ nil,
+ },
+ // fallthrough invalid
+ {
+ `kubernetes coredns.local {
+ fallthrough junk
+}`,
+ true,
+ "rong argument count",
+ -1,
+ 0,
+ defaultResyncPeriod,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ // Valid upstream
+ {
+ `kubernetes coredns.local {
+ upstream 13.14.15.16:53
+}`,
+ false,
+ "",
+ 1,
+ 0,
+ defaultResyncPeriod,
+ "",
+ podModeDisabled,
+ false,
+ []string{"13.14.15.16:53"},
+ },
+ // Invalid upstream
+ {
+ `kubernetes coredns.local {
+ upstream 13.14.15.16orange
+}`,
+ true,
+ "not an IP address or file: \"13.14.15.16orange\"",
+ -1,
+ 0,
+ defaultResyncPeriod,
+ "",
+ podModeDisabled,
+ false,
+ nil,
+ },
+ }
+
+ for i, test := range tests {
+ c := caddy.NewTestController("dns", test.input)
+ k8sController, opts, 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 := opts.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 opts.labelSelector != nil {
+ foundLabelSelectorString := unversioned.FormatLabelSelector(opts.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)
+ }
+ }
+ // Pods
+ foundPodMode := k8sController.podMode
+ if foundPodMode != test.expectedPodMode {
+ 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)
+ }
+
+ // fallthrough
+ foundFallthrough := k8sController.Fallthrough
+ if foundFallthrough != test.expectedFallthrough {
+ 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)
+ }
+ // upstream
+ foundUpstreams := k8sController.Proxy.Upstreams
+ if test.expectedUpstreams == nil {
+ if foundUpstreams != nil {
+ t.Errorf("Test %d: Expected kubernetes controller to not be initialized with upstreams for input '%s'", i, test.input)
+ }
+ } else {
+ if foundUpstreams == nil {
+ t.Errorf("Test %d: Expected kubernetes controller to be initialized with upstreams for input '%s'", i, test.input)
+ } else {
+ if len(*foundUpstreams) != len(test.expectedUpstreams) {
+ 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)
+ }
+ for j, want := range test.expectedUpstreams {
+ got := (*foundUpstreams)[j].Select().Name
+ if got != want {
+ 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)
+ }
+ }
+
+ }
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-26 20:44:37 +0000