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

     1  // Copyright © 2023 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 application
    16  
    17  import (
    18  	"os"
    19  	"path/filepath"
    20  	"testing"
    21  
    22  	"github.com/google/go-cmp/cmp"
    23  	v2 "github.com/sealerio/sealer/types/api/v2"
    24  )
    25  
    26  func Test_mergeProcessor_Process(t *testing.T) {
    27  	tests := []struct {
    28  		source   string
    29  		patch    string
    30  		expected string
    31  		wantErr  bool
    32  	}{
    33  		{
    34  			source:   "a: b\nb: c",
    35  			patch:    "b: d",
    36  			expected: "a: b\nb: d\n",
    37  			wantErr:  false,
    38  		},
    39  		{
    40  			source:   "a: b\n## ---\nb: c",
    41  			patch:    "b: d",
    42  			expected: "a: b\nb: d\n",
    43  			wantErr:  false,
    44  		},
    45  		{
    46  			source:   "a: b\n---\nb: c",
    47  			patch:    "b: d",
    48  			expected: "a: b\nb: d\n\n---\nb: d\n",
    49  			wantErr:  false,
    50  		},
    51  	}
    52  	// prepare a tmp dir to write test files
    53  	appRoot, err := os.MkdirTemp("", "sealer-unit-test")
    54  	if err != nil {
    55  		t.Fatal(err)
    56  	}
    57  	defer func() {
    58  		_ = os.RemoveAll(appRoot)
    59  	}()
    60  
    61  	testFile := filepath.Join(appRoot, "test.yaml")
    62  	for _, tt := range tests {
    63  		// prepare source file
    64  		f, err := os.Create(testFile)
    65  		if err != nil {
    66  			t.Fatal(err)
    67  		}
    68  		_, err = f.WriteString(tt.source)
    69  		if err != nil {
    70  			t.Fatal(err)
    71  		}
    72  
    73  		r := mergeProcessor{
    74  			AppFile: v2.AppFile{
    75  				Path:     "test.yaml",
    76  				Strategy: v2.MergeStrategy,
    77  				Data:     tt.patch,
    78  			},
    79  		}
    80  
    81  		if err := r.Process(appRoot); err != nil && !tt.wantErr {
    82  			t.Errorf("mergeProcessor.Process() error = %v", err)
    83  		} else {
    84  			output, err := os.ReadFile(testFile)
    85  			if err != nil {
    86  				t.Fatal(err)
    87  			}
    88  
    89  			if diff := cmp.Diff(string(output), tt.expected); diff != "" {
    90  				t.Errorf("test failed expected=%s; output=%s; diff=%s", tt.expected, string(output), diff)
    91  			}
    92  		}
    93  	}
    94  }