sigs.k8s.io/cluster-api@v1.7.1/bootstrap/kubeadm/internal/cloudinit/node_test.go (about)

     1  /*
     2  Copyright 2021 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 cloudinit
    18  
    19  import (
    20  	"fmt"
    21  	"testing"
    22  
    23  	"sigs.k8s.io/yaml"
    24  
    25  	bootstrapv1 "sigs.k8s.io/cluster-api/bootstrap/kubeadm/api/v1beta1"
    26  )
    27  
    28  func TestNewNode(t *testing.T) {
    29  	tests := []struct {
    30  		name    string
    31  		input   *NodeInput
    32  		check   func([]byte) error
    33  		wantErr bool
    34  	}{
    35  		{
    36  			"check for duplicated write_files",
    37  			&NodeInput{
    38  				BaseUserData: BaseUserData{
    39  					AdditionalFiles: []bootstrapv1.File{
    40  						{
    41  							Path:        "/etc/foo.conf",
    42  							Content:     "bar",
    43  							Owner:       "root",
    44  							Permissions: "0644",
    45  						},
    46  					},
    47  				},
    48  			},
    49  			checkWriteFiles("/etc/foo.conf", "/run/kubeadm/kubeadm-join-config.yaml", "/run/cluster-api/placeholder"),
    50  			false,
    51  		},
    52  		{
    53  			"check for existence of /run/kubeadm/kubeadm-join-config.yaml and /run/cluster-api/placeholder",
    54  			&NodeInput{},
    55  			checkWriteFiles("/run/kubeadm/kubeadm-join-config.yaml", "/run/cluster-api/placeholder"),
    56  			false,
    57  		},
    58  	}
    59  	for _, tt := range tests {
    60  		t.Run(tt.name, func(t *testing.T) {
    61  			got, err := NewNode(tt.input)
    62  			if (err != nil) != tt.wantErr {
    63  				t.Errorf("NewNode() error = %v, wantErr %v", err, tt.wantErr)
    64  				return
    65  			}
    66  			if err := tt.check(got); err != nil {
    67  				t.Errorf("%v: got = %s", err, got)
    68  			}
    69  		})
    70  	}
    71  }
    72  
    73  func checkWriteFiles(files ...string) func(b []byte) error {
    74  	return func(b []byte) error {
    75  		var cloudinitData struct {
    76  			WriteFiles []struct {
    77  				Path string `json:"path"`
    78  			} `json:"write_files"`
    79  		}
    80  
    81  		if err := yaml.Unmarshal(b, &cloudinitData); err != nil {
    82  			return err
    83  		}
    84  
    85  		gotFiles := map[string]bool{}
    86  		for _, f := range cloudinitData.WriteFiles {
    87  			gotFiles[f.Path] = true
    88  		}
    89  		for _, file := range files {
    90  			if !gotFiles[file] {
    91  				return fmt.Errorf("expected %q to exist in CloudInit's write_files", file)
    92  			}
    93  		}
    94  		if len(files) != len(cloudinitData.WriteFiles) {
    95  			return fmt.Errorf("expected to have %d files generated to CloudInit's write_files, got %d", len(files), len(cloudinitData.WriteFiles))
    96  		}
    97  
    98  		return nil
    99  	}
   100  }