configmap_test.go

Documentation: k8s.io/kubernetes/test/integration/configmap

     1  /*
     2  Copyright 2015 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package configmap
    18  
    19  // This file tests use of the configMap API resource.
    20  
    21  import (
    22  	"context"
    23  	"testing"
    24  
    25  	"k8s.io/api/core/v1"
    26  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    27  	clientset "k8s.io/client-go/kubernetes"
    28  	kubeapiservertesting "k8s.io/kubernetes/cmd/kube-apiserver/app/testing"
    29  	"k8s.io/kubernetes/test/integration"
    30  	"k8s.io/kubernetes/test/integration/framework"
    31  )
    32  
    33  // TestConfigMap tests apiserver-side behavior of creation of ConfigMaps and pods that consume them.
    34  func TestConfigMap(t *testing.T) {
    35  	// Disable ServiceAccount admission plugin as we don't have serviceaccount controller running.
    36  	server := kubeapiservertesting.StartTestServerOrDie(t, nil, []string{"--disable-admission-plugins=ServiceAccount"}, framework.SharedEtcd())
    37  	defer server.TearDownFn()
    38  
    39  	client := clientset.NewForConfigOrDie(server.ClientConfig)
    40  
    41  	ns := framework.CreateNamespaceOrDie(client, "config-map", t)
    42  	defer framework.DeleteNamespaceOrDie(client, ns, t)
    43  
    44  	DoTestConfigMap(t, client, ns)
    45  }
    46  
    47  func DoTestConfigMap(t *testing.T, client clientset.Interface, ns *v1.Namespace) {
    48  	cfg := v1.ConfigMap{
    49  		ObjectMeta: metav1.ObjectMeta{
    50  			Name:      "configmap",
    51  			Namespace: ns.Name,
    52  		},
    53  		Data: map[string]string{
    54  			"data-1": "value-1",
    55  			"data-2": "value-2",
    56  			"data-3": "value-3",
    57  		},
    58  	}
    59  
    60  	if _, err := client.CoreV1().ConfigMaps(cfg.Namespace).Create(context.TODO(), &cfg, metav1.CreateOptions{}); err != nil {
    61  		t.Errorf("unable to create test configMap: %v", err)
    62  	}
    63  	defer deleteConfigMapOrErrorf(t, client, cfg.Namespace, cfg.Name)
    64  
    65  	pod := &v1.Pod{
    66  		ObjectMeta: metav1.ObjectMeta{
    67  			Name:      "XXX",
    68  			Namespace: ns.Name,
    69  		},
    70  		Spec: v1.PodSpec{
    71  			Containers: []v1.Container{
    72  				{
    73  					Name:  "fake-name",
    74  					Image: "fakeimage",
    75  					Env: []v1.EnvVar{
    76  						{
    77  							Name: "CONFIG_DATA_1",
    78  							ValueFrom: &v1.EnvVarSource{
    79  								ConfigMapKeyRef: &v1.ConfigMapKeySelector{
    80  									LocalObjectReference: v1.LocalObjectReference{
    81  										Name: "configmap",
    82  									},
    83  									Key: "data-1",
    84  								},
    85  							},
    86  						},
    87  						{
    88  							Name: "CONFIG_DATA_2",
    89  							ValueFrom: &v1.EnvVarSource{
    90  								ConfigMapKeyRef: &v1.ConfigMapKeySelector{
    91  									LocalObjectReference: v1.LocalObjectReference{
    92  										Name: "configmap",
    93  									},
    94  									Key: "data-2",
    95  								},
    96  							},
    97  						}, {
    98  							Name: "CONFIG_DATA_3",
    99  							ValueFrom: &v1.EnvVarSource{
   100  								ConfigMapKeyRef: &v1.ConfigMapKeySelector{
   101  									LocalObjectReference: v1.LocalObjectReference{
   102  										Name: "configmap",
   103  									},
   104  									Key: "data-3",
   105  								},
   106  							},
   107  						},
   108  					},
   109  				},
   110  			},
   111  		},
   112  	}
   113  
   114  	pod.ObjectMeta.Name = "uses-configmap"
   115  	if _, err := client.CoreV1().Pods(ns.Name).Create(context.TODO(), pod, metav1.CreateOptions{}); err != nil {
   116  		t.Errorf("Failed to create pod: %v", err)
   117  	}
   118  	defer integration.DeletePodOrErrorf(t, client, ns.Name, pod.Name)
   119  }
   120  
   121  func deleteConfigMapOrErrorf(t *testing.T, c clientset.Interface, ns, name string) {
   122  	if err := c.CoreV1().ConfigMaps(ns).Delete(context.TODO(), name, metav1.DeleteOptions{}); err != nil {
   123  		t.Errorf("unable to delete ConfigMap %v: %v", name, err)
   124  	}
   125  }
   126
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