backendtlspolicy_test.go

Documentation: sigs.k8s.io/gateway-api/pkg/test/cel

     1  //go:build experimental
     2  // +build experimental
     3  
     4  /*
     5  Copyright 2023 The Kubernetes Authors.
     6  
     7  Licensed under the Apache License, Version 2.0 (the "License");
     8  you may not use this file except in compliance with the License.
     9  You may obtain a copy of the License at
    10  
    11      http://www.apache.org/licenses/LICENSE-2.0
    12  
    13  Unless required by applicable law or agreed to in writing, software
    14  distributed under the License is distributed on an "AS IS" BASIS,
    15  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    16  See the License for the specific language governing permissions and
    17  limitations under the License.
    18  */
    19  
    20  package main
    21  
    22  import (
    23  	"context"
    24  	"fmt"
    25  	"strings"
    26  	"testing"
    27  	"time"
    28  
    29  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    30  	gatewayv1a2 "sigs.k8s.io/gateway-api/apis/v1alpha2"
    31  	"sigs.k8s.io/gateway-api/apis/v1beta1"
    32  )
    33  
    34  func TestBackendTLSPolicyConfig(t *testing.T) {
    35  	tests := []struct {
    36  		name        string
    37  		wantErrors  []string
    38  		routeConfig gatewayv1a2.BackendTLSPolicyConfig
    39  	}{
    40  		{
    41  			name: "valid BackendTLSPolicyConfig with WellKnownCACerts",
    42  			routeConfig: gatewayv1a2.BackendTLSPolicyConfig{
    43  				WellKnownCACerts: ptrTo(gatewayv1a2.WellKnownCACertType("System")),
    44  				Hostname:         "foo.example.com",
    45  			},
    46  			wantErrors: []string{},
    47  		},
    48  		{
    49  			name: "valid BackendTLSPolicyConfig with CACertRefs",
    50  			routeConfig: gatewayv1a2.BackendTLSPolicyConfig{
    51  				CACertRefs: []v1beta1.LocalObjectReference{
    52  					{
    53  						Group: "group",
    54  						Kind:  "kind",
    55  						Name:  "name",
    56  					},
    57  				},
    58  				Hostname: "foo.example.com",
    59  			},
    60  			wantErrors: []string{},
    61  		},
    62  		{
    63  			name:        "invalid BackendTLSPolicyConfig with missing fields",
    64  			routeConfig: gatewayv1a2.BackendTLSPolicyConfig{},
    65  			wantErrors:  []string{"spec.tls.hostname in body should be at least 1 chars long", "must specify either CACertRefs or WellKnownCACerts"},
    66  		},
    67  		{
    68  			name: "invalid BackendTLSPolicyConfig with both CACertRefs and WellKnownCACerts",
    69  			routeConfig: gatewayv1a2.BackendTLSPolicyConfig{
    70  				CACertRefs: []v1beta1.LocalObjectReference{
    71  					{
    72  						Group: "group",
    73  						Kind:  "kind",
    74  						Name:  "name",
    75  					},
    76  				},
    77  				WellKnownCACerts: ptrTo(gatewayv1a2.WellKnownCACertType("System")),
    78  				Hostname:         "foo.example.com",
    79  			},
    80  
    81  			wantErrors: []string{"must not contain both CACertRefs and WellKnownCACerts"},
    82  		},
    83  		{
    84  			name: "invalid BackendTLSPolicyConfig with Unsupported value for WellKnownCACerts",
    85  			routeConfig: gatewayv1a2.BackendTLSPolicyConfig{
    86  				WellKnownCACerts: ptrTo(gatewayv1a2.WellKnownCACertType("bar")),
    87  				Hostname:         "foo.example.com",
    88  			},
    89  			wantErrors: []string{"supported values: \"System\""},
    90  		},
    91  		{
    92  			name: "invalid BackendTLSPolicyConfig with empty Hostname field",
    93  			routeConfig: gatewayv1a2.BackendTLSPolicyConfig{
    94  				CACertRefs: []v1beta1.LocalObjectReference{
    95  					{
    96  						Group: "group",
    97  						Kind:  "kind",
    98  						Name:  "name",
    99  					},
   100  				},
   101  				Hostname: "",
   102  			},
   103  			wantErrors: []string{"spec.tls.hostname in body should be at least 1 chars long"},
   104  		},
   105  	}
   106  	for _, tc := range tests {
   107  		t.Run(tc.name, func(t *testing.T) {
   108  			route := &gatewayv1a2.BackendTLSPolicy{
   109  				ObjectMeta: metav1.ObjectMeta{
   110  					Name:      fmt.Sprintf("foo-%v", time.Now().UnixNano()),
   111  					Namespace: metav1.NamespaceDefault,
   112  				},
   113  				Spec: gatewayv1a2.BackendTLSPolicySpec{
   114  					TargetRef: gatewayv1a2.PolicyTargetReferenceWithSectionName{
   115  						PolicyTargetReference: gatewayv1a2.PolicyTargetReference{
   116  							Group:     "group",
   117  							Kind:      "kind",
   118  							Name:      "name",
   119  							Namespace: ptrTo(gatewayv1a2.Namespace("ns")),
   120  						},
   121  					},
   122  					TLS: tc.routeConfig,
   123  				},
   124  			}
   125  			validateBackendTLSPolicy(t, route, tc.wantErrors)
   126  		})
   127  	}
   128  }
   129  
   130  func validateBackendTLSPolicy(t *testing.T, route *gatewayv1a2.BackendTLSPolicy, wantErrors []string) {
   131  	t.Helper()
   132  
   133  	ctx := context.Background()
   134  	err := k8sClient.Create(ctx, route)
   135  
   136  	if (len(wantErrors) != 0) != (err != nil) {
   137  		t.Fatalf("Unexpected response while creating BackendTLSPolicy %q; got err=\n%v\n;want error=%v", fmt.Sprintf("%v/%v", route.Namespace, route.Name), err, wantErrors)
   138  	}
   139  
   140  	var missingErrorStrings []string
   141  	for _, wantError := range wantErrors {
   142  		if !strings.Contains(strings.ToLower(err.Error()), strings.ToLower(wantError)) {
   143  			missingErrorStrings = append(missingErrorStrings, wantError)
   144  		}
   145  	}
   146  	if len(missingErrorStrings) != 0 {
   147  		t.Errorf("Unexpected response while creating BackendTLSPolicy %q; got err=\n%v\n;missing strings within error=%q", fmt.Sprintf("%v/%v", route.Namespace, route.Name), err, missingErrorStrings)
   148  	}
   149  }
   150
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