k8s.io/kubernetes@v1.31.0-alpha.0.0.20240520171757-56147500dadc/pkg/apis/autoscaling/v2beta1/defaults_test.go (about)

     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 v2beta1_test
    18  
    19  import (
    20  	"reflect"
    21  	"testing"
    22  
    23  	"github.com/google/go-cmp/cmp"
    24  	autoscalingv2beta1 "k8s.io/api/autoscaling/v2beta1"
    25  	v1 "k8s.io/api/core/v1"
    26  	apiequality "k8s.io/apimachinery/pkg/api/equality"
    27  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    28  	"k8s.io/apimachinery/pkg/runtime"
    29  	"k8s.io/kubernetes/pkg/api/legacyscheme"
    30  	"k8s.io/kubernetes/pkg/apis/autoscaling"
    31  	_ "k8s.io/kubernetes/pkg/apis/autoscaling/install"
    32  	. "k8s.io/kubernetes/pkg/apis/autoscaling/v2beta1"
    33  	_ "k8s.io/kubernetes/pkg/apis/core/install"
    34  	utilpointer "k8s.io/utils/pointer"
    35  )
    36  
    37  func TestSetDefaultHPA(t *testing.T) {
    38  	utilizationDefaultVal := int32(autoscaling.DefaultCPUUtilization)
    39  	defaultReplicas := utilpointer.Int32(1)
    40  	defaultTemplate := []autoscalingv2beta1.MetricSpec{
    41  		{
    42  			Type: autoscalingv2beta1.ResourceMetricSourceType,
    43  			Resource: &autoscalingv2beta1.ResourceMetricSource{
    44  				Name:                     v1.ResourceCPU,
    45  				TargetAverageUtilization: &utilizationDefaultVal,
    46  			},
    47  		},
    48  	}
    49  
    50  	tests := []struct {
    51  		original *autoscalingv2beta1.HorizontalPodAutoscaler
    52  		expected *autoscalingv2beta1.HorizontalPodAutoscaler
    53  	}{
    54  		{ // MinReplicas default value
    55  			original: &autoscalingv2beta1.HorizontalPodAutoscaler{
    56  				Spec: autoscalingv2beta1.HorizontalPodAutoscalerSpec{
    57  					Metrics: defaultTemplate,
    58  				},
    59  			},
    60  			expected: &autoscalingv2beta1.HorizontalPodAutoscaler{
    61  				Spec: autoscalingv2beta1.HorizontalPodAutoscalerSpec{
    62  					MinReplicas: defaultReplicas,
    63  					Metrics:     defaultTemplate,
    64  				},
    65  			},
    66  		},
    67  		{ // MinReplicas update
    68  			original: &autoscalingv2beta1.HorizontalPodAutoscaler{
    69  				Spec: autoscalingv2beta1.HorizontalPodAutoscalerSpec{
    70  					MinReplicas: utilpointer.Int32(3),
    71  					Metrics:     defaultTemplate,
    72  				},
    73  			},
    74  			expected: &autoscalingv2beta1.HorizontalPodAutoscaler{
    75  				Spec: autoscalingv2beta1.HorizontalPodAutoscalerSpec{
    76  					MinReplicas: utilpointer.Int32(3),
    77  					Metrics:     defaultTemplate,
    78  				},
    79  			},
    80  		},
    81  		{ // Metrics default value
    82  			original: &autoscalingv2beta1.HorizontalPodAutoscaler{
    83  				Spec: autoscalingv2beta1.HorizontalPodAutoscalerSpec{
    84  					MinReplicas: defaultReplicas,
    85  				},
    86  			},
    87  			expected: &autoscalingv2beta1.HorizontalPodAutoscaler{
    88  				Spec: autoscalingv2beta1.HorizontalPodAutoscalerSpec{
    89  					MinReplicas: defaultReplicas,
    90  					Metrics:     defaultTemplate,
    91  				},
    92  			},
    93  		},
    94  	}
    95  
    96  	for i, test := range tests {
    97  		original := test.original
    98  		expected := test.expected
    99  		obj2 := roundTrip(t, runtime.Object(original))
   100  		got, ok := obj2.(*autoscalingv2beta1.HorizontalPodAutoscaler)
   101  		if !ok {
   102  			t.Fatalf("(%d) unexpected object: %v", i, obj2)
   103  		}
   104  		if !apiequality.Semantic.DeepEqual(got.Spec, expected.Spec) {
   105  			t.Errorf("(%d) got different than expected\ngot:\n\t%+v\nexpected:\n\t%+v", i, got.Spec, expected.Spec)
   106  		}
   107  	}
   108  }
   109  
   110  func TestHorizontalPodAutoscalerAnnotations(t *testing.T) {
   111  	tests := []struct {
   112  		hpa  autoscalingv2beta1.HorizontalPodAutoscaler
   113  		test string
   114  	}{
   115  		{
   116  			hpa: autoscalingv2beta1.HorizontalPodAutoscaler{
   117  				ObjectMeta: metav1.ObjectMeta{
   118  					Annotations: map[string]string{
   119  						autoscaling.HorizontalPodAutoscalerConditionsAnnotation: "",
   120  						autoscaling.MetricSpecsAnnotation:                       "",
   121  						autoscaling.BehaviorSpecsAnnotation:                     "",
   122  						autoscaling.MetricStatusesAnnotation:                    "",
   123  					},
   124  				},
   125  			},
   126  			test: "test empty value for Annotations",
   127  		},
   128  		{
   129  			hpa: autoscalingv2beta1.HorizontalPodAutoscaler{
   130  				ObjectMeta: metav1.ObjectMeta{
   131  					Annotations: map[string]string{
   132  						autoscaling.HorizontalPodAutoscalerConditionsAnnotation: "abc",
   133  						autoscaling.MetricSpecsAnnotation:                       "abc",
   134  						autoscaling.BehaviorSpecsAnnotation:                     "abc",
   135  						autoscaling.MetricStatusesAnnotation:                    "abc",
   136  					},
   137  				},
   138  			},
   139  			test: "test random value for Annotations",
   140  		},
   141  		{
   142  			hpa: autoscalingv2beta1.HorizontalPodAutoscaler{
   143  				ObjectMeta: metav1.ObjectMeta{
   144  					Annotations: map[string]string{
   145  						autoscaling.HorizontalPodAutoscalerConditionsAnnotation: "[]",
   146  						autoscaling.MetricSpecsAnnotation:                       "[]",
   147  						autoscaling.BehaviorSpecsAnnotation:                     "[]",
   148  						autoscaling.MetricStatusesAnnotation:                    "[]",
   149  					},
   150  				},
   151  			},
   152  			test: "test empty array value for Annotations",
   153  		},
   154  	}
   155  
   156  	for _, test := range tests {
   157  		hpa := &test.hpa
   158  		hpaBeforeMuatate := *hpa.DeepCopy()
   159  		obj := roundTrip(t, runtime.Object(hpa))
   160  		final_obj, ok := obj.(*autoscalingv2beta1.HorizontalPodAutoscaler)
   161  		if !ok {
   162  			t.Fatalf("unexpected object: %v", obj)
   163  		}
   164  		if !reflect.DeepEqual(*hpa, hpaBeforeMuatate) {
   165  			t.Errorf("diff: %v", cmp.Diff(*hpa, hpaBeforeMuatate))
   166  			t.Errorf("expected: %#v\n actual:   %#v", *hpa, hpaBeforeMuatate)
   167  		}
   168  
   169  		if len(final_obj.ObjectMeta.Annotations) != 0 {
   170  			t.Fatalf("unexpected annotations: %v", final_obj.ObjectMeta.Annotations)
   171  		}
   172  	}
   173  }
   174  
   175  func roundTrip(t *testing.T, obj runtime.Object) runtime.Object {
   176  	data, err := runtime.Encode(legacyscheme.Codecs.LegacyCodec(SchemeGroupVersion), obj)
   177  	if err != nil {
   178  		t.Errorf("%v\n %#v", err, obj)
   179  		return nil
   180  	}
   181  	obj2, err := runtime.Decode(legacyscheme.Codecs.UniversalDecoder(), data)
   182  	if err != nil {
   183  		t.Errorf("%v\nData: %s\nSource: %#v", err, string(data), obj)
   184  		return nil
   185  	}
   186  	obj3 := reflect.New(reflect.TypeOf(obj).Elem()).Interface().(runtime.Object)
   187  	err = legacyscheme.Scheme.Convert(obj2, obj3, nil)
   188  	if err != nil {
   189  		t.Errorf("%v\nSource: %#v", err, obj2)
   190  		return nil
   191  	}
   192  	return obj3
   193  }