gatewayclass_test.go

Documentation: sigs.k8s.io/gateway-api/apis/v1alpha2/validation

     1  /*
     2  Copyright 2021 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 validation
    18  
    19  import (
    20  	"reflect"
    21  	"testing"
    22  
    23  	"k8s.io/apimachinery/pkg/util/validation/field"
    24  
    25  	gatewayv1a2 "sigs.k8s.io/gateway-api/apis/v1alpha2"
    26  )
    27  
    28  func TestValidateGatewayClassUpdate(t *testing.T) {
    29  	type args struct {
    30  		oldClass *gatewayv1a2.GatewayClass
    31  		newClass *gatewayv1a2.GatewayClass
    32  	}
    33  	tests := []struct {
    34  		name string
    35  		args args
    36  		want field.ErrorList
    37  	}{
    38  		{
    39  			name: "changing parameters reference is allowed",
    40  			args: args{
    41  				oldClass: &gatewayv1a2.GatewayClass{
    42  					Spec: gatewayv1a2.GatewayClassSpec{
    43  						ControllerName: "foo",
    44  					},
    45  				},
    46  				newClass: &gatewayv1a2.GatewayClass{
    47  					Spec: gatewayv1a2.GatewayClassSpec{
    48  						ControllerName: "foo",
    49  						ParametersRef: &gatewayv1a2.ParametersReference{
    50  							Group: "example.com",
    51  							Kind:  "GatewayClassConfig",
    52  							Name:  "foo",
    53  						},
    54  					},
    55  				},
    56  			},
    57  			want: nil,
    58  		},
    59  		{
    60  			name: "changing controller field results in an error",
    61  			args: args{
    62  				oldClass: &gatewayv1a2.GatewayClass{
    63  					Spec: gatewayv1a2.GatewayClassSpec{
    64  						ControllerName: "example.com/gateway",
    65  					},
    66  				},
    67  				newClass: &gatewayv1a2.GatewayClass{
    68  					Spec: gatewayv1a2.GatewayClassSpec{
    69  						ControllerName: "example.org/gateway",
    70  					},
    71  				},
    72  			},
    73  			want: field.ErrorList{
    74  				{
    75  					Type:     field.ErrorTypeInvalid,
    76  					Field:    "spec.controllerName",
    77  					Detail:   "cannot update an immutable field",
    78  					BadValue: gatewayv1a2.GatewayController("example.org/gateway"),
    79  				},
    80  			},
    81  		},
    82  		{
    83  			name: "nil input result in no errors",
    84  			args: args{
    85  				oldClass: nil,
    86  				newClass: nil,
    87  			},
    88  			want: nil,
    89  		},
    90  	}
    91  	for _, tc := range tests {
    92  		t.Run(tc.name, func(t *testing.T) {
    93  			if got := ValidateGatewayClassUpdate(tc.args.oldClass, tc.args.newClass); !reflect.DeepEqual(got, tc.want) {
    94  				t.Errorf("ValidateGatewayClassUpdate() = %v, want %v", got, tc.want)
    95  			}
    96  		})
    97  	}
    98  }
    99
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