karmada/pkg/resourceinterpreter/customized/declarative/configmanager/manager_test.go

/*
Copyright 2022 The Karmada 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 configmanager

import (
	"context"
	"reflect"
	"testing"
	"time"

	appsv1 "k8s.io/api/apps/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/runtime/schema"
	"k8s.io/client-go/dynamic/fake"
	"k8s.io/client-go/tools/cache"

	configv1alpha1 "github.com/karmada-io/karmada/pkg/apis/config/v1alpha1"
	"github.com/karmada-io/karmada/pkg/util/fedinformer/genericmanager"
	"github.com/karmada-io/karmada/pkg/util/gclient"
)

func Test_interpreterConfigManager_LuaScriptAccessors(t *testing.T) {
	customization01 := &configv1alpha1.ResourceInterpreterCustomization{
		ObjectMeta: metav1.ObjectMeta{Name: "customization01"},
		Spec: configv1alpha1.ResourceInterpreterCustomizationSpec{
			Target: configv1alpha1.CustomizationTarget{
				APIVersion: appsv1.SchemeGroupVersion.String(),
				Kind:       "Deployment",
			},
			Customizations: configv1alpha1.CustomizationRules{
				Retention:       &configv1alpha1.LocalValueRetention{LuaScript: "a=0"},
				ReplicaResource: &configv1alpha1.ReplicaResourceRequirement{LuaScript: "b=0"},
			},
		},
	}
	customization02 := &configv1alpha1.ResourceInterpreterCustomization{
		ObjectMeta: metav1.ObjectMeta{Name: "customization02"},
		Spec: configv1alpha1.ResourceInterpreterCustomizationSpec{
			Target: configv1alpha1.CustomizationTarget{
				APIVersion: appsv1.SchemeGroupVersion.String(),
				Kind:       "Deployment",
			},
			Customizations: configv1alpha1.CustomizationRules{
				ReplicaRevision:  &configv1alpha1.ReplicaRevision{LuaScript: "c=0"},
				StatusReflection: &configv1alpha1.StatusReflection{LuaScript: "d=0"},
			},
		},
	}
	customization03 := &configv1alpha1.ResourceInterpreterCustomization{
		ObjectMeta: metav1.ObjectMeta{Name: "customization03"},
		Spec: configv1alpha1.ResourceInterpreterCustomizationSpec{
			Target: configv1alpha1.CustomizationTarget{
				APIVersion: appsv1.SchemeGroupVersion.String(),
				Kind:       "Deployment",
			},
			Customizations: configv1alpha1.CustomizationRules{
				ReplicaResource: &configv1alpha1.ReplicaResourceRequirement{LuaScript: "b=1"},
				ReplicaRevision: &configv1alpha1.ReplicaRevision{LuaScript: "c=1"},
			},
		},
	}
	deploymentGVK := schema.GroupVersionKind{Group: "apps", Version: "v1", Kind: "Deployment"}

	type args struct {
		customizations []runtime.Object
	}
	tests := []struct {
		name string
		args args
		want map[schema.GroupVersionKind]CustomAccessor
	}{
		{
			name: "single ResourceInterpreterCustomization",
			args: args{[]runtime.Object{customization01}},
			want: map[schema.GroupVersionKind]CustomAccessor{
				deploymentGVK: &resourceCustomAccessor{
					retention:       &configv1alpha1.LocalValueRetention{LuaScript: "a=0"},
					replicaResource: &configv1alpha1.ReplicaResourceRequirement{LuaScript: "b=0"},
				},
			},
		},
		{
			name: "multi ResourceInterpreterCustomization with no redundant operation",
			args: args{[]runtime.Object{customization01, customization02}},
			want: map[schema.GroupVersionKind]CustomAccessor{
				deploymentGVK: &resourceCustomAccessor{
					retention:        &configv1alpha1.LocalValueRetention{LuaScript: "a=0"},
					replicaResource:  &configv1alpha1.ReplicaResourceRequirement{LuaScript: "b=0"},
					replicaRevision:  &configv1alpha1.ReplicaRevision{LuaScript: "c=0"},
					statusReflection: &configv1alpha1.StatusReflection{LuaScript: "d=0"},
				},
			},
		},
		{
			name: "multi ResourceInterpreterCustomization with redundant operation",
			args: args{[]runtime.Object{customization03, customization02, customization01}},
			want: map[schema.GroupVersionKind]CustomAccessor{
				deploymentGVK: &resourceCustomAccessor{
					retention:        &configv1alpha1.LocalValueRetention{LuaScript: "a=0"},
					replicaResource:  &configv1alpha1.ReplicaResourceRequirement{LuaScript: "b=0"},
					replicaRevision:  &configv1alpha1.ReplicaRevision{LuaScript: "c=0"},
					statusReflection: &configv1alpha1.StatusReflection{LuaScript: "d=0"},
				},
			},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			ctx, cancel := context.WithTimeout(context.TODO(), time.Second*5)
			defer cancel()
			stopCh := ctx.Done()

			client := fake.NewSimpleDynamicClient(gclient.NewSchema(), tt.args.customizations...)
			informer := genericmanager.NewSingleClusterInformerManager(client, 0, stopCh)
			configManager := NewInterpreterConfigManager(informer)

			informer.Start()
			defer informer.Stop()

			informer.WaitForCacheSync()

			if !cache.WaitForCacheSync(stopCh, configManager.HasSynced) {
				t.Errorf("informer has not been synced")
			}

			gotAccessors := configManager.CustomAccessors()
			for gvk, gotAccessor := range gotAccessors {
				wantAccessor, ok := tt.want[gvk]
				if !ok {
					t.Errorf("Can not find the target gvk %v", gvk)
				}
				if !reflect.DeepEqual(gotAccessor, wantAccessor) {
					t.Errorf("LuaScriptAccessors() = %v, want %v", gotAccessor, wantAccessor)
				}
			}
		})
	}
}