github.com/alex123012/deckhouse-controller-tools@v0.0.0-20230510090815-d594daf1af8c/pkg/schemapatcher/internal/yaml/set_test.go (about)

     1  /*
     2  Copyright 2019 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      htcp://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 yaml
    18  
    19  import (
    20  	. "github.com/onsi/ginkgo"
    21  	. "github.com/onsi/gomega"
    22  	"gopkg.in/yaml.v3"
    23  )
    24  
    25  var _ = Describe("SetNode", func() {
    26  	tests := []struct {
    27  		name    string
    28  		obj     interface{}
    29  		value   interface{}
    30  		path    []string
    31  		want    interface{}
    32  		wantErr bool
    33  	}{
    34  		{name: "null"},
    35  		{name: "empty, null value",
    36  			obj:   map[string]interface{}{},
    37  			value: nil,
    38  			want:  nil,
    39  		},
    40  		{name: "empty, non-null value",
    41  			obj:   map[string]interface{}{},
    42  			value: int64(64),
    43  			want:  int64(64),
    44  		},
    45  		{name: "non-empty, unknown path",
    46  			obj: map[string]interface{}{
    47  				"bar": int64(42),
    48  			},
    49  			value: "foo",
    50  			path:  []string{"foo"},
    51  			want: map[string]interface{}{
    52  				"bar": int64(42),
    53  				"foo": "foo",
    54  			},
    55  		},
    56  		{name: "non-empty, existing path",
    57  			obj: map[string]interface{}{
    58  				"bar": int64(42),
    59  			},
    60  			value: "foo",
    61  			path:  []string{"bar"},
    62  			want: map[string]interface{}{
    63  				"bar": "foo",
    64  			},
    65  		},
    66  		{name: "non-empty, long path",
    67  			obj: map[string]interface{}{
    68  				"foo": map[string]interface{}{
    69  					"bar": int64(42),
    70  				},
    71  			},
    72  			value: "foo",
    73  			path:  []string{"foo", "bar"},
    74  			want: map[string]interface{}{
    75  				"foo": map[string]interface{}{
    76  					"bar": "foo",
    77  				},
    78  			},
    79  		},
    80  		{name: "invalid type",
    81  			obj: map[string]interface{}{
    82  				"foo": []interface{}{int64(42)},
    83  			},
    84  			value:   "foo",
    85  			path:    []string{"foo", "bar"},
    86  			wantErr: true,
    87  		},
    88  	}
    89  
    90  	for i := range tests {
    91  		tc := tests[i]
    92  		It("should support "+tc.name, func() {
    93  			By("setting up the test objects and desired values")
    94  			obj, err := ToYAML(tc.obj)
    95  			Expect(err).NotTo(HaveOccurred())
    96  			value, err := ToYAML(tc.value)
    97  			Expect(err).NotTo(HaveOccurred())
    98  			value, _, _ = asCloseAsPossible(value)
    99  			want, err := ToYAML(tc.want)
   100  			Expect(err).NotTo(HaveOccurred())
   101  
   102  			By("calling SetNode")
   103  			if tc.wantErr {
   104  				Expect(SetNode(obj, *value, tc.path...)).NotTo(Succeed())
   105  				return // don't check output value if there's an error
   106  			}
   107  
   108  			Expect(SetNode(obj, *value, tc.path...)).To(Succeed())
   109  
   110  			By("marshalling the desired and actual objects")
   111  			wantOut, err := yaml.Marshal(want)
   112  			Expect(err).NotTo(HaveOccurred())
   113  			objOut, err := yaml.Marshal(obj)
   114  			Expect(err).NotTo(HaveOccurred())
   115  
   116  			By("comparing actual and desired output")
   117  			Expect(string(wantOut)).To(Equal(string(objOut)))
   118  		})
   119  	}
   120  })