config_test.go

Documentation: k8s.io/kubernetes/cmd/kubeadm/app/phases/kubelet

     1  /*
     2  Copyright 2017 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 kubelet
    18  
    19  import (
    20  	"bytes"
    21  	"io"
    22  	"os"
    23  	"path/filepath"
    24  	"testing"
    25  
    26  	v1 "k8s.io/api/core/v1"
    27  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    28  	"k8s.io/apimachinery/pkg/runtime"
    29  	"k8s.io/client-go/kubernetes/fake"
    30  	core "k8s.io/client-go/testing"
    31  
    32  	configutil "k8s.io/kubernetes/cmd/kubeadm/app/util/config"
    33  )
    34  
    35  func TestCreateConfigMap(t *testing.T) {
    36  	nodeName := "fake-node"
    37  	client := fake.NewSimpleClientset()
    38  	client.PrependReactor("get", "nodes", func(action core.Action) (bool, runtime.Object, error) {
    39  		return true, &v1.Node{
    40  			ObjectMeta: metav1.ObjectMeta{
    41  				Name: nodeName,
    42  			},
    43  			Spec: v1.NodeSpec{},
    44  		}, nil
    45  	})
    46  	client.PrependReactor("create", "roles", func(action core.Action) (bool, runtime.Object, error) {
    47  		return true, nil, nil
    48  	})
    49  	client.PrependReactor("create", "rolebindings", func(action core.Action) (bool, runtime.Object, error) {
    50  		return true, nil, nil
    51  	})
    52  	client.PrependReactor("create", "configmaps", func(action core.Action) (bool, runtime.Object, error) {
    53  		return true, nil, nil
    54  	})
    55  
    56  	internalcfg, err := configutil.DefaultedStaticInitConfiguration()
    57  	if err != nil {
    58  		t.Fatalf("unexpected failure when defaulting InitConfiguration: %v", err)
    59  	}
    60  
    61  	if err := CreateConfigMap(&internalcfg.ClusterConfiguration, client); err != nil {
    62  		t.Errorf("CreateConfigMap: unexpected error %v", err)
    63  	}
    64  }
    65  
    66  func TestCreateConfigMapRBACRules(t *testing.T) {
    67  	client := fake.NewSimpleClientset()
    68  	client.PrependReactor("create", "roles", func(action core.Action) (bool, runtime.Object, error) {
    69  		return true, nil, nil
    70  	})
    71  	client.PrependReactor("create", "rolebindings", func(action core.Action) (bool, runtime.Object, error) {
    72  		return true, nil, nil
    73  	})
    74  
    75  	if err := createConfigMapRBACRules(client); err != nil {
    76  		t.Errorf("createConfigMapRBACRules: unexpected error %v", err)
    77  	}
    78  }
    79  
    80  func TestApplyKubeletConfigPatches(t *testing.T) {
    81  	var (
    82  		input          = []byte("bar: 0\nfoo: 0\n")
    83  		patch          = []byte("bar: 1\n")
    84  		expectedOutput = []byte("bar: 1\nfoo: 0\n")
    85  	)
    86  
    87  	dir, err := os.MkdirTemp("", "patches")
    88  	if err != nil {
    89  		t.Fatalf("could not create temp dir: %v", err)
    90  	}
    91  	defer os.RemoveAll(dir)
    92  
    93  	if err := os.WriteFile(filepath.Join(dir, "kubeletconfiguration.yaml"), patch, 0644); err != nil {
    94  		t.Fatalf("could not write patch file: %v", err)
    95  	}
    96  
    97  	output, err := applyKubeletConfigPatches(input, dir, io.Discard)
    98  	if err != nil {
    99  		t.Fatalf("could not apply patch: %v", err)
   100  	}
   101  
   102  	if !bytes.Equal(output, expectedOutput) {
   103  		t.Fatalf("expected output:\n%s\ngot\n%s\n", expectedOutput, output)
   104  	}
   105  }
   106
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