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Adding test case for the webhook behavior change 

Authored-by: Jordan Liggitt <liggitt@google.com>
Signed-off-by: Davanum Srinivas <davanum@gmail.com>

Kubernetes-commit: 3be3051fb77be1a1ad250c04a68efe8c6bf61940
This commit is contained in:
Davanum Srinivas 2025-05-06 09:23:46 -04:00 committed by Kubernetes Publisher
parent 0f91510ab0
commit 71463feb30
2 changed files with 45 additions and 0 deletions
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35
pkg/admission/plugin/webhook/testing/testcase.go
View File

@ -38,6 +38,7 @@ import (
"k8s.io/client-go/informers"
"k8s.io/client-go/kubernetes"
fakeclientset "k8s.io/client-go/kubernetes/fake"
"k8s.io/utils/ptr"
)
var matchEverythingRules = []registrationv1.RuleWithOperations{{
@ -897,6 +898,40 @@ func NewMutatingTestCases(url *url.URL, configurationName string) []MutatingTest
"mutation.webhook.admission.k8s.io/round_0_index_0": mutationAnnotationValue(configurationName, "invalidMutation", false),
},
},
{
Name: "match & invalid patch",
Webhooks: []registrationv1.MutatingWebhook{{
Name: "invalidPatch",
ClientConfig: ccfgSVC("invalidPatch"),
Rules: matchEverythingRules,
NamespaceSelector: &metav1.LabelSelector{},
ObjectSelector: &metav1.LabelSelector{},
AdmissionReviewVersions: []string{"v1beta1"},
}},
ExpectStatusCode: http.StatusInternalServerError,
ErrorContains: "unexpected end of JSON input",
ExpectAnnotations: map[string]string{
"mutation.webhook.admission.k8s.io/round_0_index_0": mutationAnnotationValue(configurationName, "invalidPatch", false),
},
},
{
Name: "match & invalid patch fail open",
Webhooks: []registrationv1.MutatingWebhook{{
Name: "invalidPatch",
ClientConfig: ccfgSVC("invalidPatch"),
Rules: matchEverythingRules,
NamespaceSelector: &metav1.LabelSelector{},
ObjectSelector: &metav1.LabelSelector{},
AdmissionReviewVersions: []string{"v1beta1"},
FailurePolicy: ptr.To(registrationv1.Ignore),
}},
ExpectAllow: true,
ExpectStatusCode: http.StatusOK,
ExpectAnnotations: map[string]string{
"failed-open.mutation.webhook.admission.k8s.io/round_0_index_0": "invalidPatch",
"mutation.webhook.admission.k8s.io/round_0_index_0": mutationAnnotationValue(configurationName, "invalidPatch", false),
},
},
{
Name: "match & remove label dry run unsupported",
Webhooks: []registrationv1.MutatingWebhook{{

10
pkg/admission/plugin/webhook/testing/webhook_server.go
View File

@ -137,6 +137,16 @@ func webhookHandler(w http.ResponseWriter, r *http.Request) {
Patch: []byte(`[{"op": "add", "path": "/metadata/labels/added", "value": "test"}]`),
},
})
case "/invalidPatch":
w.Header().Set("Content-Type", "application/json")
pt := v1beta1.PatchTypeJSONPatch
json.NewEncoder(w).Encode(&v1beta1.AdmissionReview{
Response: &v1beta1.AdmissionResponse{
Allowed: true,
PatchType: &pt,
Patch: []byte(`[{`),
},
})
case "/invalidMutation":
w.Header().Set("Content-Type", "application/json")
pt := v1beta1.PatchTypeJSONPatch