irsa-manager/internal/controller/irsa_controller_test.go

/*
Copyright 2024.

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 controller

import (
	"fmt"

	. "github.com/onsi/ginkgo/v2"
	. "github.com/onsi/gomega"
	"k8s.io/apimachinery/pkg/api/errors"
	"k8s.io/apimachinery/pkg/types"
	"sigs.k8s.io/controller-runtime/pkg/client"
	"sigs.k8s.io/controller-runtime/pkg/reconcile"

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

	irsav1alpha1 "github.com/kkb0318/irsa-manager/api/v1alpha1"
)

var _ = Describe("IRSA Controller", func() {
	Context("When reconciling IRSA", func() {
		tests := []struct {
			name         string
			obj          *irsav1alpha1.IRSA
			irsaSetupObj *irsav1alpha1.IRSASetup
			f            func(*IRSAReconciler, *irsav1alpha1.IRSA)
		}{
			{
				name: "should reconcile successfully",
				obj: &irsav1alpha1.IRSA{
					ObjectMeta: metav1.ObjectMeta{
						Name:      "test-resource1",
						Namespace: "default",
					},
					Spec: irsav1alpha1.IRSASpec{
						Cleanup: true,
						ServiceAccount: irsav1alpha1.IRSAServiceAccount{
							Name: "sa-1",
							Namespaces: []string{
								"kube-system",
								"default",
							},
						},
					},
				},
				irsaSetupObj: newMockIRSASetup(),
				f: func(r *IRSAReconciler, obj *irsav1alpha1.IRSA) {
					expected := []expectedResource{
						{
							NamespacedName: types.NamespacedName{Name: "sa-1", Namespace: "kube-system"},
							f:              newServiceAccount,
						},
						{
							NamespacedName: types.NamespacedName{Name: "sa-1", Namespace: "default"},
							f:              newServiceAccount,
						},
					}

					By("Reconciling the created resource")
					typeNamespacedName := types.NamespacedName{
						Name:      obj.Name,
						Namespace: obj.Namespace,
					}

					_, err := r.Reconcile(ctx, reconcile.Request{
						NamespacedName: typeNamespacedName,
					})
					Expect(err).NotTo(HaveOccurred())
					_, err = r.Reconcile(ctx, reconcile.Request{
						NamespacedName: typeNamespacedName,
					})
					Expect(err).NotTo(HaveOccurred())
					for _, expect := range expected {
						checkExist(expect)
					}
					By("removing the custom resource for the Kind")
					Eventually(func() error {
						return k8sClient.Delete(ctx, obj)
					}, timeout).Should(Succeed())
					_, err = r.Reconcile(ctx, reconcile.Request{
						NamespacedName: typeNamespacedName,
					})
					Expect(err).To(Not(HaveOccurred()))
					for _, expect := range expected {
						checkNoExist(expect)
					}
				},
			},
			{
				name: "error",
				obj: &irsav1alpha1.IRSA{
					ObjectMeta: metav1.ObjectMeta{
						Name:      "test-resource2",
						Namespace: "default",
					},
					Spec: irsav1alpha1.IRSASpec{
						Cleanup: true,
						ServiceAccount: irsav1alpha1.IRSAServiceAccount{
							Name: "sa-2",
							Namespaces: []string{
								"kube-system",
								"default",
							},
						},
					},
				},
				irsaSetupObj: newMockIRSASetup(),
				f: func(r *IRSAReconciler, obj *irsav1alpha1.IRSA) {
					expected := []expectedResource{
						{
							NamespacedName: types.NamespacedName{Name: "sa-2", Namespace: "kube-system"},
							f:              newServiceAccount,
						},
						{
							NamespacedName: types.NamespacedName{Name: "sa-2", Namespace: "default"},
							f:              newServiceAccount,
						},
					}

					By("Reconciling the created resource")
					typeNamespacedName := types.NamespacedName{
						Name:      obj.Name,
						Namespace: obj.Namespace,
					}

					By("Error when creating role")
					r.AwsClient = newMockAwsClient(&mockAwsIamAPI{createRoleErr: fmt.Errorf("createRoleErr")}, nil, nil)
					_, err := r.Reconcile(ctx, reconcile.Request{
						NamespacedName: typeNamespacedName,
					})
					Expect(err).To(HaveOccurred())
					for _, expect := range expected {
						checkNoExist(expect)
					}

					By("successfully Reconciling")
					r.AwsClient = newMockAwsClient(&mockAwsIamAPI{}, nil, nil)
					_, err = r.Reconcile(ctx, reconcile.Request{
						NamespacedName: typeNamespacedName,
					})
					Expect(err).NotTo(HaveOccurred())
					for _, expect := range expected {
						checkExist(expect)
					}
					By("removing the custom resource for the Kind")
					Eventually(func() error {
						return k8sClient.Delete(ctx, obj)
					}, timeout).Should(Succeed())
					_, err = r.Reconcile(ctx, reconcile.Request{
						NamespacedName: typeNamespacedName,
					})
					Expect(err).To(Not(HaveOccurred()))
					for _, expect := range expected {
						checkNoExist(expect)
					}
				},
			},
		}
		for _, tt := range tests {
			It(tt.name, func() {
				typeNamespacedName := types.NamespacedName{
					Name:      tt.obj.Name,
					Namespace: tt.obj.Namespace,
				}
				controllerReconciler := &IRSAReconciler{
					Client:    k8sClient,
					Scheme:    k8sClient.Scheme(),
					AwsClient: newMockAwsClient(&mockAwsIamAPI{}, nil, nil),
				}
				By("creating the mock ISASetup")
				if tt.irsaSetupObj != nil {
					err := k8sClient.Get(ctx, client.ObjectKeyFromObject(tt.irsaSetupObj), tt.irsaSetupObj)
					if err != nil && errors.IsNotFound(err) {
						Expect(k8sClient.Create(ctx, tt.obj)).To(Succeed())
					}

				}
				By("creating the custom resource for the Kind IRSA")
				err := k8sClient.Get(ctx, typeNamespacedName, tt.obj)
				if err != nil && errors.IsNotFound(err) {
					Expect(k8sClient.Create(ctx, tt.obj)).To(Succeed())
				}
				_, err = controllerReconciler.Reconcile(ctx, reconcile.Request{
					NamespacedName: typeNamespacedName,
				})
				Expect(err).NotTo(HaveOccurred())
				tt.f(controllerReconciler, tt.obj)

				By("deleting the mock ISASetup")
				err = k8sClient.Get(ctx, client.ObjectKeyFromObject(tt.irsaSetupObj), tt.irsaSetupObj)
				if err == nil {
					err = k8sClient.Delete(ctx, tt.irsaSetupObj)
					Expect(err).NotTo(HaveOccurred())
				}
			})
		}
		BeforeEach(func() {
		})
		AfterEach(func() {
		})
	})
})

func newMockIRSASetup() *irsav1alpha1.IRSASetup {
	return &irsav1alpha1.IRSASetup{
		ObjectMeta: metav1.ObjectMeta{
			Name:      "test",
			Namespace: "default",
		},
		Spec: irsav1alpha1.IRSASetupSpec{
			Discovery: irsav1alpha1.Discovery{
				S3: irsav1alpha1.S3Discovery{
					Region:     "ap-northeast-1",
					BucketName: "irsa-manager-1",
				},
			},
		},
	}
}