knative.dev/pkg@v0.0.0-20260602142205-ac97e43f6622/reconciler/testing/generate_name_reactor_test.go (about)

     1  /*
     2  Copyright 2019 The Knative 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 testing
    18  
    19  import (
    20  	"testing"
    21  
    22  	"github.com/google/go-cmp/cmp"
    23  	appsv1 "k8s.io/api/apps/v1"
    24  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    25  	"k8s.io/apimachinery/pkg/runtime"
    26  	"k8s.io/apimachinery/pkg/runtime/schema"
    27  	clientgotesting "k8s.io/client-go/testing"
    28  )
    29  
    30  var deploymentsResource = schema.GroupVersionResource{Group: "apps", Version: "v1", Resource: "deployments"}
    31  
    32  func TestGenerateNameReactor(t *testing.T) {
    33  	tests := []struct {
    34  		name         string
    35  		deployment   *appsv1.Deployment
    36  		expectedName string
    37  	}{{
    38  		name:         "resource with name",
    39  		expectedName: "basic",
    40  		deployment: &appsv1.Deployment{
    41  			ObjectMeta: metav1.ObjectMeta{
    42  				Name: "basic",
    43  			},
    44  		},
    45  	}, {
    46  		name:         "resource with generatedName",
    47  		expectedName: "fancy-00001",
    48  		deployment: &appsv1.Deployment{
    49  			ObjectMeta: metav1.ObjectMeta{
    50  				GenerateName: "fancy-",
    51  			},
    52  		},
    53  	}, {
    54  		name:         "resource with name and generatedName",
    55  		expectedName: "fancy-00002",
    56  		deployment: &appsv1.Deployment{
    57  			ObjectMeta: metav1.ObjectMeta{
    58  				Name:         "fancy-00002",
    59  				GenerateName: "fancy-",
    60  			},
    61  		},
    62  	}, {
    63  		name:         "broken resource with no names",
    64  		expectedName: "",
    65  		deployment:   &appsv1.Deployment{},
    66  	}}
    67  
    68  	for _, tc := range tests {
    69  		t.Run(tc.name, func(t *testing.T) {
    70  			lastHandlerInvoked := false
    71  
    72  			fake := &clientgotesting.Fake{}
    73  			var mutated *appsv1.Deployment
    74  			fake.AddReactor("*", "*", func(action clientgotesting.Action) (handled bool, ret runtime.Object, err error) {
    75  				create, ok := action.(clientgotesting.CreateAction)
    76  				if !ok {
    77  					return false, nil, nil
    78  				}
    79  				deploy, ok := create.GetObject().(*appsv1.Deployment)
    80  				if !ok {
    81  					return false, nil, nil
    82  				}
    83  				lastHandlerInvoked = true
    84  				mutated = deploy
    85  				return false, nil, nil
    86  			})
    87  
    88  			PrependGenerateNameReactor(fake)
    89  
    90  			action := clientgotesting.NewCreateAction(deploymentsResource, "namespace", tc.deployment)
    91  
    92  			fake.Invokes(action, &appsv1.Deployment{})
    93  
    94  			if diff := cmp.Diff(tc.expectedName, mutated.GetName()); diff != "" {
    95  				t.Error(diff)
    96  			}
    97  
    98  			if !lastHandlerInvoked {
    99  				t.Error("GenerateNameReactor should not interfere with the fake's ReactionChain")
   100  			}
   101  		})
   102  	}
   103  }