github.com/sealerio/sealer@v0.11.1-0.20240507115618-f4f89c5853ae/pkg/runtime/utils_test.go (about)

     1  // Copyright © 2022 Alibaba Group Holding Ltd.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package runtime
    16  
    17  import (
    18  	"os"
    19  	"path/filepath"
    20  	"reflect"
    21  	"testing"
    22  
    23  	"github.com/sealerio/sealer/common"
    24  )
    25  
    26  const (
    27  	mockMetadata = `{
    28    "version": "v1.19.8",
    29    "arch": "amd64",
    30    "ClusterRuntime": "kubernetes",
    31    "NydusFlag": false,
    32    "kubeVersion": "",
    33    "variant": ""
    34  }
    35  `
    36  )
    37  
    38  func TestLoadMetadata(t *testing.T) {
    39  	const (
    40  		rootfsPath       = "rootfs"
    41  		metadataFileName = "Metadata"
    42  	)
    43  	type object struct {
    44  		RuntimeMetadata []byte
    45  	}
    46  	tests := []struct {
    47  		name    string
    48  		object  object
    49  		want    *Metadata
    50  		wantErr bool
    51  	}{
    52  		{
    53  			name: "test metadata file from rootfs",
    54  			object: object{
    55  				[]byte(mockMetadata),
    56  			},
    57  			want: &Metadata{
    58  				Version:        "v1.19.8",
    59  				Arch:           "amd64",
    60  				ClusterRuntime: ClusterRuntime(common.K8s),
    61  				NydusFlag:      false,
    62  				KubeVersion:    "",
    63  				Variant:        "",
    64  			},
    65  			wantErr: false,
    66  		},
    67  	}
    68  	for _, tt := range tests {
    69  		t.Run(tt.name, func(t *testing.T) {
    70  			dir, err := os.MkdirTemp("", "test-rootfs-metadata-tmp")
    71  			if err != nil {
    72  				t.Errorf("Make temp dir %s error = %s, wantErr %v", dir, err, tt.wantErr)
    73  			}
    74  			defer func() {
    75  				err = os.RemoveAll(dir)
    76  				if err != nil {
    77  					t.Errorf("Remove temp dir %s error = %v, wantErr %v", dir, err, tt.wantErr)
    78  				}
    79  			}()
    80  
    81  			err = os.Mkdir(filepath.Join(dir, rootfsPath), 0777)
    82  			if err != nil {
    83  				t.Errorf("Make dir %s error = %s, wantErr %v", dir, err, tt.wantErr)
    84  			}
    85  
    86  			err = os.WriteFile(filepath.Join(dir, rootfsPath, metadataFileName), tt.object.RuntimeMetadata, 0777)
    87  			if err != nil {
    88  				t.Errorf("Write file %s error = %v, wantErr %v", filepath.Join(dir, rootfsPath, metadataFileName), err, tt.wantErr)
    89  			}
    90  
    91  			metadata, err := LoadMetadata(filepath.Join(dir, rootfsPath))
    92  			if err != nil {
    93  				t.Errorf("LoadMetadata error: %v, wantErr %v", err, tt.wantErr)
    94  			}
    95  			if !reflect.DeepEqual(metadata, tt.want) {
    96  				t.Errorf("Metadata loaded from file is not wanted! Got: %v, wanted: %v", metadata, tt.want)
    97  			}
    98  		})
    99  	}
   100  }