mapper_test.go

Documentation: k8s.io/apimachinery/pkg/runtime

     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      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 runtime
    18  
    19  import (
    20  	"reflect"
    21  	"testing"
    22  
    23  	"github.com/google/go-cmp/cmp"
    24  	"k8s.io/apimachinery/pkg/runtime/schema"
    25  )
    26  
    27  func TestResourceMapper(t *testing.T) {
    28  	gvr := func(g, v, r string) schema.GroupVersionResource {
    29  		return schema.GroupVersionResource{Group: g, Version: v, Resource: r}
    30  	}
    31  
    32  	gvk := func(g, v, k string) schema.GroupVersionKind {
    33  		return schema.GroupVersionKind{Group: g, Version: v, Kind: k}
    34  	}
    35  
    36  	kindsToRegister := []struct {
    37  		gvr         schema.GroupVersionResource
    38  		subresource string
    39  		gvk         schema.GroupVersionKind
    40  	}{
    41  		// pods
    42  		{gvr("", "v1", "pods"), "", gvk("", "v1", "Pod")},
    43  		// pods/status
    44  		{gvr("", "v1", "pods"), "status", gvk("", "v1", "Pod")},
    45  		// deployments
    46  		{gvr("apps", "v1", "deployments"), "", gvk("apps", "v1", "Deployment")},
    47  		{gvr("apps", "v1beta1", "deployments"), "", gvk("apps", "v1beta1", "Deployment")},
    48  		{gvr("apps", "v1alpha1", "deployments"), "", gvk("apps", "v1alpha1", "Deployment")},
    49  		{gvr("extensions", "v1beta1", "deployments"), "", gvk("extensions", "v1beta1", "Deployment")},
    50  		// deployments/scale (omitted for apps/v1alpha1)
    51  		{gvr("apps", "v1", "deployments"), "scale", gvk("", "", "Scale")},
    52  		{gvr("apps", "v1beta1", "deployments"), "scale", gvk("", "", "Scale")},
    53  		{gvr("extensions", "v1beta1", "deployments"), "scale", gvk("", "", "Scale")},
    54  		// deployments/status (omitted for apps/v1alpha1)
    55  		{gvr("apps", "v1", "deployments"), "status", gvk("apps", "v1", "Deployment")},
    56  		{gvr("apps", "v1beta1", "deployments"), "status", gvk("apps", "v1beta1", "Deployment")},
    57  		{gvr("extensions", "v1beta1", "deployments"), "status", gvk("extensions", "v1beta1", "Deployment")},
    58  	}
    59  
    60  	testcases := []struct {
    61  		Name                           string
    62  		IdentityFunc                   func(schema.GroupResource) string
    63  		ResourcesForV1Deployment       []schema.GroupVersionResource
    64  		ResourcesForV1DeploymentScale  []schema.GroupVersionResource
    65  		ResourcesForV1DeploymentStatus []schema.GroupVersionResource
    66  	}{
    67  		{
    68  			Name:                           "no identityfunc",
    69  			ResourcesForV1Deployment:       []schema.GroupVersionResource{gvr("apps", "v1", "deployments"), gvr("apps", "v1beta1", "deployments"), gvr("apps", "v1alpha1", "deployments")},
    70  			ResourcesForV1DeploymentScale:  []schema.GroupVersionResource{gvr("apps", "v1", "deployments"), gvr("apps", "v1beta1", "deployments")},
    71  			ResourcesForV1DeploymentStatus: []schema.GroupVersionResource{gvr("apps", "v1", "deployments"), gvr("apps", "v1beta1", "deployments")},
    72  		},
    73  		{
    74  			Name:         "empty identityfunc",
    75  			IdentityFunc: func(schema.GroupResource) string { return "" },
    76  			// same group
    77  			ResourcesForV1Deployment:       []schema.GroupVersionResource{gvr("apps", "v1", "deployments"), gvr("apps", "v1beta1", "deployments"), gvr("apps", "v1alpha1", "deployments")},
    78  			ResourcesForV1DeploymentScale:  []schema.GroupVersionResource{gvr("apps", "v1", "deployments"), gvr("apps", "v1beta1", "deployments")},
    79  			ResourcesForV1DeploymentStatus: []schema.GroupVersionResource{gvr("apps", "v1", "deployments"), gvr("apps", "v1beta1", "deployments")},
    80  		},
    81  		{
    82  			Name:         "common identityfunc",
    83  			IdentityFunc: func(schema.GroupResource) string { return "x" },
    84  			// all resources are seen as equivalent
    85  			ResourcesForV1Deployment: []schema.GroupVersionResource{gvr("", "v1", "pods"), gvr("apps", "v1", "deployments"), gvr("apps", "v1beta1", "deployments"), gvr("apps", "v1alpha1", "deployments"), gvr("extensions", "v1beta1", "deployments")},
    86  			// all resources with scale are seen as equivalent
    87  			ResourcesForV1DeploymentScale: []schema.GroupVersionResource{gvr("apps", "v1", "deployments"), gvr("apps", "v1beta1", "deployments"), gvr("extensions", "v1beta1", "deployments")},
    88  			// all resources with status are seen as equivalent
    89  			ResourcesForV1DeploymentStatus: []schema.GroupVersionResource{gvr("", "v1", "pods"), gvr("apps", "v1", "deployments"), gvr("apps", "v1beta1", "deployments"), gvr("extensions", "v1beta1", "deployments")},
    90  		},
    91  		{
    92  			Name: "colocated deployments",
    93  			IdentityFunc: func(resource schema.GroupResource) string {
    94  				if resource.Resource == "deployments" {
    95  					return "deployments"
    96  				}
    97  				return ""
    98  			},
    99  			// all deployments are seen as equivalent
   100  			ResourcesForV1Deployment: []schema.GroupVersionResource{gvr("apps", "v1", "deployments"), gvr("apps", "v1beta1", "deployments"), gvr("apps", "v1alpha1", "deployments"), gvr("extensions", "v1beta1", "deployments")},
   101  			// all deployments with scale are seen as equivalent
   102  			ResourcesForV1DeploymentScale: []schema.GroupVersionResource{gvr("apps", "v1", "deployments"), gvr("apps", "v1beta1", "deployments"), gvr("extensions", "v1beta1", "deployments")},
   103  			// all deployments with status are seen as equivalent
   104  			ResourcesForV1DeploymentStatus: []schema.GroupVersionResource{gvr("apps", "v1", "deployments"), gvr("apps", "v1beta1", "deployments"), gvr("extensions", "v1beta1", "deployments")},
   105  		},
   106  	}
   107  
   108  	for _, tc := range testcases {
   109  		t.Run(tc.Name, func(t *testing.T) {
   110  			mapper := NewEquivalentResourceRegistryWithIdentity(tc.IdentityFunc)
   111  
   112  			// register
   113  			for _, data := range kindsToRegister {
   114  				mapper.RegisterKindFor(data.gvr, data.subresource, data.gvk)
   115  			}
   116  			// verify
   117  			for _, data := range kindsToRegister {
   118  				if kind := mapper.KindFor(data.gvr, data.subresource); kind != data.gvk {
   119  					t.Errorf("KindFor(%#v, %v) returned %#v, expected %#v", data.gvr, data.subresource, kind, data.gvk)
   120  				}
   121  			}
   122  
   123  			// Verify equivalents to primary resource
   124  			if resources := mapper.EquivalentResourcesFor(gvr("apps", "v1", "deployments"), ""); !reflect.DeepEqual(resources, tc.ResourcesForV1Deployment) {
   125  				t.Errorf("diff:\n%s", cmp.Diff(tc.ResourcesForV1Deployment, resources))
   126  			}
   127  			// Verify equivalents to subresources
   128  			if resources := mapper.EquivalentResourcesFor(gvr("apps", "v1", "deployments"), "scale"); !reflect.DeepEqual(resources, tc.ResourcesForV1DeploymentScale) {
   129  				t.Errorf("diff:\n%s", cmp.Diff(tc.ResourcesForV1DeploymentScale, resources))
   130  			}
   131  			if resources := mapper.EquivalentResourcesFor(gvr("apps", "v1", "deployments"), "status"); !reflect.DeepEqual(resources, tc.ResourcesForV1DeploymentStatus) {
   132  				t.Errorf("diff:\n%s", cmp.Diff(tc.ResourcesForV1DeploymentStatus, resources))
   133  			}
   134  		})
   135  	}
   136  }
   137
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