k3s/pkg/apis/networking/validation/validation_test.go

/*
Copyright 2014 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package validation

import (
	"testing"

	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/util/intstr"
	"k8s.io/kubernetes/pkg/api"
	"k8s.io/kubernetes/pkg/apis/networking"
)

func TestValidateNetworkPolicy(t *testing.T) {
	protocolTCP := api.ProtocolTCP
	protocolUDP := api.ProtocolUDP
	protocolICMP := api.Protocol("ICMP")

	successCases := []networking.NetworkPolicy{
		{
			ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
			Spec: networking.NetworkPolicySpec{
				PodSelector: metav1.LabelSelector{
					MatchLabels: map[string]string{"a": "b"},
				},
				Ingress: []networking.NetworkPolicyIngressRule{},
			},
		},
		{
			ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
			Spec: networking.NetworkPolicySpec{
				PodSelector: metav1.LabelSelector{
					MatchLabels: map[string]string{"a": "b"},
				},
				Ingress: []networking.NetworkPolicyIngressRule{
					{
						From:  []networking.NetworkPolicyPeer{},
						Ports: []networking.NetworkPolicyPort{},
					},
				},
			},
		},
		{
			ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
			Spec: networking.NetworkPolicySpec{
				PodSelector: metav1.LabelSelector{
					MatchLabels: map[string]string{"a": "b"},
				},
				Ingress: []networking.NetworkPolicyIngressRule{
					{
						Ports: []networking.NetworkPolicyPort{
							{
								Protocol: nil,
								Port:     &intstr.IntOrString{Type: intstr.Int, IntVal: 80},
							},
							{
								Protocol: &protocolTCP,
								Port:     nil,
							},
							{
								Protocol: &protocolTCP,
								Port:     &intstr.IntOrString{Type: intstr.Int, IntVal: 443},
							},
							{
								Protocol: &protocolUDP,
								Port:     &intstr.IntOrString{Type: intstr.String, StrVal: "dns"},
							},
						},
					},
				},
			},
		},
		{
			ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
			Spec: networking.NetworkPolicySpec{
				PodSelector: metav1.LabelSelector{
					MatchLabels: map[string]string{"a": "b"},
				},
				Ingress: []networking.NetworkPolicyIngressRule{
					{
						From: []networking.NetworkPolicyPeer{
							{
								PodSelector: &metav1.LabelSelector{
									MatchLabels: map[string]string{"c": "d"},
								},
							},
						},
					},
				},
			},
		},
		{
			ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
			Spec: networking.NetworkPolicySpec{
				PodSelector: metav1.LabelSelector{
					MatchLabels: map[string]string{"a": "b"},
				},
				Ingress: []networking.NetworkPolicyIngressRule{
					{
						From: []networking.NetworkPolicyPeer{
							{
								NamespaceSelector: &metav1.LabelSelector{
									MatchLabels: map[string]string{"c": "d"},
								},
							},
						},
					},
				},
			},
		},
	}

	// Success cases are expected to pass validation.
	for k, v := range successCases {
		if errs := ValidateNetworkPolicy(&v); len(errs) != 0 {
			t.Errorf("Expected success for %d, got %v", k, errs)
		}
	}

	invalidSelector := map[string]string{"NoUppercaseOrSpecialCharsLike=Equals": "b"}
	errorCases := map[string]networking.NetworkPolicy{
		"namespaceSelector and podSelector": {
			ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
			Spec: networking.NetworkPolicySpec{
				PodSelector: metav1.LabelSelector{
					MatchLabels: map[string]string{"a": "b"},
				},
				Ingress: []networking.NetworkPolicyIngressRule{
					{
						From: []networking.NetworkPolicyPeer{
							{
								PodSelector: &metav1.LabelSelector{
									MatchLabels: map[string]string{"c": "d"},
								},
								NamespaceSelector: &metav1.LabelSelector{
									MatchLabels: map[string]string{"c": "d"},
								},
							},
						},
					},
				},
			},
		},
		"invalid spec.podSelector": {
			ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
			Spec: networking.NetworkPolicySpec{
				PodSelector: metav1.LabelSelector{
					MatchLabels: invalidSelector,
				},
				Ingress: []networking.NetworkPolicyIngressRule{
					{
						From: []networking.NetworkPolicyPeer{
							{
								NamespaceSelector: &metav1.LabelSelector{
									MatchLabels: map[string]string{"c": "d"},
								},
							},
						},
					},
				},
			},
		},
		"invalid ingress.ports.protocol": {
			ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
			Spec: networking.NetworkPolicySpec{
				PodSelector: metav1.LabelSelector{},
				Ingress: []networking.NetworkPolicyIngressRule{
					{
						Ports: []networking.NetworkPolicyPort{
							{
								Protocol: &protocolICMP,
								Port:     &intstr.IntOrString{Type: intstr.Int, IntVal: 80},
							},
						},
					},
				},
			},
		},
		"invalid ingress.ports.port (int)": {
			ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
			Spec: networking.NetworkPolicySpec{
				PodSelector: metav1.LabelSelector{},
				Ingress: []networking.NetworkPolicyIngressRule{
					{
						Ports: []networking.NetworkPolicyPort{
							{
								Protocol: &protocolTCP,
								Port:     &intstr.IntOrString{Type: intstr.Int, IntVal: 123456789},
							},
						},
					},
				},
			},
		},
		"invalid ingress.ports.port (str)": {
			ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
			Spec: networking.NetworkPolicySpec{
				PodSelector: metav1.LabelSelector{},
				Ingress: []networking.NetworkPolicyIngressRule{
					{
						Ports: []networking.NetworkPolicyPort{
							{
								Protocol: &protocolTCP,
								Port:     &intstr.IntOrString{Type: intstr.String, StrVal: "!@#$"},
							},
						},
					},
				},
			},
		},
		"invalid ingress.from.podSelector": {
			ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
			Spec: networking.NetworkPolicySpec{
				PodSelector: metav1.LabelSelector{},
				Ingress: []networking.NetworkPolicyIngressRule{
					{
						From: []networking.NetworkPolicyPeer{
							{
								PodSelector: &metav1.LabelSelector{
									MatchLabels: invalidSelector,
								},
							},
						},
					},
				},
			},
		},
		"invalid ingress.from.namespaceSelector": {
			ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
			Spec: networking.NetworkPolicySpec{
				PodSelector: metav1.LabelSelector{},
				Ingress: []networking.NetworkPolicyIngressRule{
					{
						From: []networking.NetworkPolicyPeer{
							{
								NamespaceSelector: &metav1.LabelSelector{
									MatchLabels: invalidSelector,
								},
							},
						},
					},
				},
			},
		},
	}

	// Error cases are not expected to pass validation.
	for testName, networkPolicy := range errorCases {
		if errs := ValidateNetworkPolicy(&networkPolicy); len(errs) == 0 {
			t.Errorf("Expected failure for test: %s", testName)
		}
	}
}

func TestValidateNetworkPolicyUpdate(t *testing.T) {
	type npUpdateTest struct {
		old    networking.NetworkPolicy
		update networking.NetworkPolicy
	}
	successCases := map[string]npUpdateTest{
		"no change": {
			old: networking.NetworkPolicy{
				ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
				Spec: networking.NetworkPolicySpec{
					PodSelector: metav1.LabelSelector{
						MatchLabels: map[string]string{"a": "b"},
					},
					Ingress: []networking.NetworkPolicyIngressRule{},
				},
			},
			update: networking.NetworkPolicy{
				ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
				Spec: networking.NetworkPolicySpec{
					PodSelector: metav1.LabelSelector{
						MatchLabels: map[string]string{"a": "b"},
					},
					Ingress: []networking.NetworkPolicyIngressRule{},
				},
			},
		},
		"change spec": {
			old: networking.NetworkPolicy{
				ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
				Spec: networking.NetworkPolicySpec{
					PodSelector: metav1.LabelSelector{},
					Ingress:     []networking.NetworkPolicyIngressRule{},
				},
			},
			update: networking.NetworkPolicy{
				ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
				Spec: networking.NetworkPolicySpec{
					PodSelector: metav1.LabelSelector{
						MatchLabels: map[string]string{"a": "b"},
					},
					Ingress: []networking.NetworkPolicyIngressRule{},
				},
			},
		},
	}

	for testName, successCase := range successCases {
		successCase.old.ObjectMeta.ResourceVersion = "1"
		successCase.update.ObjectMeta.ResourceVersion = "1"
		if errs := ValidateNetworkPolicyUpdate(&successCase.update, &successCase.old); len(errs) != 0 {
			t.Errorf("expected success (%s): %v", testName, errs)
		}
	}

	errorCases := map[string]npUpdateTest{
		"change name": {
			old: networking.NetworkPolicy{
				ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
				Spec: networking.NetworkPolicySpec{
					PodSelector: metav1.LabelSelector{},
					Ingress:     []networking.NetworkPolicyIngressRule{},
				},
			},
			update: networking.NetworkPolicy{
				ObjectMeta: metav1.ObjectMeta{Name: "baz", Namespace: "bar"},
				Spec: networking.NetworkPolicySpec{
					PodSelector: metav1.LabelSelector{},
					Ingress:     []networking.NetworkPolicyIngressRule{},
				},
			},
		},
	}

	for testName, errorCase := range errorCases {
		errorCase.old.ObjectMeta.ResourceVersion = "1"
		errorCase.update.ObjectMeta.ResourceVersion = "1"
		if errs := ValidateNetworkPolicyUpdate(&errorCase.update, &errorCase.old); len(errs) == 0 {
			t.Errorf("expected failure: %s", testName)
		}
	}
}