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76 lines
3.2 KiB
Go
76 lines
3.2 KiB
Go
package main
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import (
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"testing"
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)
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func TestGetClusterDomain(t *testing.T) {
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c := Config{}
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if c.GetClusterDomain() != "cluster.local" {
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t.Errorf("cluster domain should default to cluster.local, not: %s", c.GetClusterDomain())
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}
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c.ClusterDomain = "mydomain.com"
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if c.GetClusterDomain() != "mydomain.com" {
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t.Errorf("cluster domain should default to cluster.local, not: %s", c.GetClusterDomain())
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}
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}
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func TestShouldMutate(t *testing.T) {
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testCases := []struct {
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description string
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subject string
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namespace string
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expected bool
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}{
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{"full cluster domain", "test.default.svc.cluster.local", "default", true},
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{"full cluster domain wrong ns", "test.default.svc.cluster.local", "kube-system", false},
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{"left dots get stripped", ".test.default.svc.cluster.local", "default", true},
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{"left dots get stripped wrong ns", ".test.default.svc.cluster.local", "kube-system", false},
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{"right dots get stripped", "test.default.svc.cluster.local.", "default", true},
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{"right dots get stripped wrong ns", "test.default.svc.cluster.local.", "kube-system", false},
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{"dots get stripped", ".test.default.svc.cluster.local.", "default", true},
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{"dots get stripped wrong ns", ".test.default.svc.cluster.local.", "kube-system", false},
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{"partial cluster domain", "test.default.svc.cluster", "default", true},
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{"partial cluster domain wrong ns is still allowed because not valid hostname", "test.default.svc.cluster", "kube-system", true},
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{"service domain", "test.default.svc", "default", true},
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{"service domain wrong ns", "test.default.svc", "kube-system", false},
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{"two part domain", "test.default", "default", true},
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{"two part domain different ns", "test.default", "kube-system", true},
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{"one hostname", "test", "default", true},
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{"no subject specified", "", "default", false},
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{"three part not cluster", "test.default.com", "kube-system", true},
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{"four part not cluster", "test.default.svc.com", "kube-system", true},
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{"five part not cluster", "test.default.svc.cluster.com", "kube-system", true},
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{"six part not cluster", "test.default.svc.cluster.local.com", "kube-system", true},
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}
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for _, testCase := range testCases {
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t.Run(testCase.description, func(t *testing.T) {
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mutationAllowed, validationErr := shouldMutate(&metav1.ObjectMeta{
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Annotations: map[string]string{
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admissionWebhookAnnotationKey: testCase.subject,
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},
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}, testCase.namespace, "cluster.local", true)
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if mutationAllowed != testCase.expected {
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t.Errorf("shouldMutate did not return %t for %s", testCase.expected, testCase.description)
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}
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if testCase.subject != "" && mutationAllowed == false && validationErr == nil {
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t.Errorf("shouldMutate should return validation error for invalid hostname")
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}
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})
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}
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}
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func TestShouldMutateNotRestrictToNamespace(t *testing.T) {
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mutationAllowed, _ := shouldMutate(&metav1.ObjectMeta{
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Annotations: map[string]string{
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admissionWebhookAnnotationKey: "test.default.svc.cluster.local",
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},
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}, "kube-system", "cluster.local", false)
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if mutationAllowed == false {
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t.Errorf("shouldMutate should return true even with a wrong namespace if restrictToNamespace is false.")
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}
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}
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