strategy_test.go

Documentation: k8s.io/kubernetes/pkg/registry/networking/networkpolicy

     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 networkpolicy
    18  
    19  import (
    20  	"context"
    21  	"testing"
    22  
    23  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    24  	"k8s.io/apimachinery/pkg/util/intstr"
    25  	api "k8s.io/kubernetes/pkg/apis/core"
    26  	"k8s.io/kubernetes/pkg/apis/networking"
    27  )
    28  
    29  func makeNetworkPolicy(isIngress, isEgress, hasEndPort bool) *networking.NetworkPolicy {
    30  
    31  	protocolTCP := api.ProtocolTCP
    32  	endPort := int32(32000)
    33  	netPol := &networking.NetworkPolicy{
    34  		ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar", Generation: 0},
    35  		Spec: networking.NetworkPolicySpec{
    36  			PodSelector: metav1.LabelSelector{
    37  				MatchLabels: map[string]string{"a": "b"},
    38  			},
    39  		},
    40  	}
    41  	egress := networking.NetworkPolicyEgressRule{
    42  		To: []networking.NetworkPolicyPeer{
    43  			{
    44  				NamespaceSelector: &metav1.LabelSelector{
    45  					MatchLabels: map[string]string{"c": "d"},
    46  				},
    47  			},
    48  		},
    49  	}
    50  
    51  	ingress := networking.NetworkPolicyIngressRule{
    52  		From: []networking.NetworkPolicyPeer{
    53  			{
    54  				NamespaceSelector: &metav1.LabelSelector{
    55  					MatchLabels: map[string]string{"c": "d"},
    56  				},
    57  			},
    58  		},
    59  	}
    60  
    61  	ports := []networking.NetworkPolicyPort{
    62  		{
    63  			Protocol: &protocolTCP,
    64  			Port:     &intstr.IntOrString{Type: intstr.Int, IntVal: 31000},
    65  		},
    66  	}
    67  
    68  	ingress.Ports = ports
    69  	egress.Ports = ports
    70  
    71  	if hasEndPort {
    72  		ingress.Ports[0].EndPort = &endPort
    73  		egress.Ports[0].EndPort = &endPort
    74  	}
    75  
    76  	if isIngress {
    77  		netPol.Spec.Ingress = append(netPol.Spec.Ingress, ingress)
    78  	}
    79  
    80  	if isEgress {
    81  		netPol.Spec.Egress = append(netPol.Spec.Egress, egress)
    82  	}
    83  
    84  	return netPol
    85  }
    86  
    87  func TestNetworkPolicyStrategy(t *testing.T) {
    88  
    89  	// Create a Network Policy containing EndPort defined to compare with the generated by the tests
    90  	netPol := makeNetworkPolicy(true, true, false)
    91  
    92  	Strategy.PrepareForCreate(context.Background(), netPol)
    93  
    94  	if netPol.Generation != 1 {
    95  		t.Errorf("Create: Test failed. Network Policy Generation should be 1, got %d",
    96  			netPol.Generation)
    97  	}
    98  
    99  	errs := Strategy.Validate(context.Background(), netPol)
   100  	if len(errs) != 0 {
   101  		t.Errorf("Unexpected error from validation for created Network Policy: %v", errs)
   102  	}
   103  
   104  	updatedNetPol := makeNetworkPolicy(true, true, true)
   105  	updatedNetPol.ObjectMeta.SetResourceVersion("1")
   106  	Strategy.PrepareForUpdate(context.Background(), updatedNetPol, netPol)
   107  
   108  	errs = Strategy.ValidateUpdate(context.Background(), updatedNetPol, netPol)
   109  	if len(errs) != 0 {
   110  		t.Errorf("Unexpected error from validation for updated Network Policy: %v", errs)
   111  	}
   112  
   113  }
   114
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