/*
Copyright 2023 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 servicecidr

import (
	"context"
	"reflect"
	"testing"

	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"

	"k8s.io/kubernetes/pkg/apis/networking"
)

func newServiceCIDR() *networking.ServiceCIDR {
	return &networking.ServiceCIDR{
		ObjectMeta: metav1.ObjectMeta{
			Name:            "servicecidr-test",
			ResourceVersion: "1",
		},
		Spec: networking.ServiceCIDRSpec{
			CIDRs: []string{"10.10.0.0/24"},
		},
	}
}

func TestServiceCIDRStrategy(t *testing.T) {
	if Strategy.NamespaceScoped() {
		t.Errorf("Expected ServiceCIDR to be cluster-scoped")
	}

	obj := &networking.ServiceCIDR{Spec: networking.ServiceCIDRSpec{CIDRs: []string{"bad cidr"}}}

	errors := Strategy.Validate(context.TODO(), obj)
	if len(errors) != 2 {
		t.Errorf("Expected 2 validation errors for invalid object, got %d", len(errors))
	}

	oldObj := newServiceCIDR()
	newObj := oldObj.DeepCopy()
	newObj.Spec.CIDRs = []string{"bad cidr"}
	errors = Strategy.ValidateUpdate(context.TODO(), newObj, oldObj)
	if len(errors) != 2 {
		t.Errorf("Expected 2 validation errors for invalid update, got %d", len(errors))
	}
}

func TestServiceCIDRStatusStrategy(t *testing.T) {
	oldObj := &networking.ServiceCIDR{Spec: networking.ServiceCIDRSpec{}}
	newObj := &networking.ServiceCIDR{
		Spec: networking.ServiceCIDRSpec{
			CIDRs: []string{"10.10.0.0/16"},
		},
	}
	StatusStrategy.PrepareForUpdate(context.TODO(), newObj, oldObj)
	if !reflect.DeepEqual(newObj.Spec, networking.ServiceCIDRSpec{}) {
		t.Errorf("Expected spec field to be preserved from old object during status update")
	}

	newObj = &networking.ServiceCIDR{
		Status: networking.ServiceCIDRStatus{
			Conditions: []metav1.Condition{
				{
					Type:   "bad type",
					Status: "bad status",
				},
			},
		},
	}
	oldObj = &networking.ServiceCIDR{}
	errors := StatusStrategy.ValidateUpdate(context.TODO(), newObj, oldObj)
	if len(errors) != 1 {
		t.Errorf("Expected 1 validation errors for invalid update, got %d", len(errors))
	}
}
