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5300466a5c
The canonical import for json-patch v4 is gopkg.in/evanphx/json-patch.v4 (see https://github.com/evanphx/json-patch/blob/master/README.md#get-it for reference). Using the v4-specific path should also reduce the risk of unwanted v5 upgrade attempts, because they won't be offered as automated upgrades by dependency upgrade management tools, and they won't happen through indirect dependencies (see https://github.com/kubernetes/kubernetes/pull/120327 for context). Signed-off-by: Stephen Kitt <skitt@redhat.com>
87 lines
2.4 KiB
Go
87 lines
2.4 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package webhook
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import (
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"encoding/json"
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"reflect"
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"testing"
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jsonpatch "gopkg.in/evanphx/json-patch.v4"
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"k8s.io/api/admission/v1"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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)
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func TestAddLabel(t *testing.T) {
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testCases := []struct {
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name string
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initialLabels map[string]string
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expectedLabels map[string]string
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}{
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{
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name: "add first label",
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initialLabels: nil,
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expectedLabels: map[string]string{"added-label": "yes"},
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},
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{
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name: "add second label",
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initialLabels: map[string]string{"other-label": "yes"},
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expectedLabels: map[string]string{"other-label": "yes", "added-label": "yes"},
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},
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{
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name: "idempotent update label",
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initialLabels: map[string]string{"added-label": "yes"},
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expectedLabels: map[string]string{"added-label": "yes"},
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},
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}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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request := corev1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Labels: tc.initialLabels}}
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raw, err := json.Marshal(request)
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if err != nil {
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t.Fatal(err)
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}
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review := v1.AdmissionReview{Request: &v1.AdmissionRequest{Object: runtime.RawExtension{Raw: raw}}}
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response := addLabel(review)
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if response.Patch != nil {
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patchObj, err := jsonpatch.DecodePatch(response.Patch)
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if err != nil {
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t.Fatal(err)
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}
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raw, err = patchObj.Apply(raw)
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if err != nil {
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t.Fatal(err)
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}
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}
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objType := reflect.TypeOf(request)
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objTest := reflect.New(objType).Interface()
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err = json.Unmarshal(raw, objTest)
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if err != nil {
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t.Fatal(err)
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}
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actual := objTest.(*corev1.ConfigMap)
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if !reflect.DeepEqual(actual.Labels, tc.expectedLabels) {
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t.Errorf("\nexpected %#v, got %#v, patch: %v", actual.Labels, tc.expectedLabels, string(response.Patch))
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}
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})
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}
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}
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