Move Kustomize patch tests to Go test suite

.github/workflows/e2e.yaml

@@ -79,26 +79,6 @@ jobs:
           kubectl -n impersonation wait kustomizations/podinfo --for=condition=ready --timeout=4m
           kubectl -n impersonation delete kustomizations/podinfo
           until kubectl -n impersonation get deploy/podinfo 2>&1 | grep NotFound ; do sleep 2; done
-      - name: Run images override tests
-        run: |
-          kubectl -n images-test apply -f ./config/testdata/overrides/images.yaml
-          kubectl -n images-test wait kustomizations/podinfo --for=condition=ready --timeout=1m
-          ACTUAL_TAG=$(kubectl -n images-test get deployments podinfo -o jsonpath='{.spec.template.spec.containers[0].image}' | cut -f2 -d ":")
-          if [[ $ACTUAL_TAG != "5.0.0" ]]; then echo "Image tag was not overwritten" && exit 1; fi
-      - name: Run patches override tests
-        run: |
-          kubectl -n patches-test apply -f ./config/testdata/overrides/patches.yaml
-          kubectl -n patches-test wait kustomizations/podinfo --for=condition=ready --timeout=1m
-          WANT="xxxx"
-          RESULT=$(kubectl -n patches-test get deployment podinfo -o jsonpath='{.metadata.labels.yyyy}')
-          if [ "$RESULT" != "$WANT" ]; then
-              echo -e "$RESULT\n\ndoes not equal\n\n$WANT" && exit 1
-          fi
-          WANT="yyyy"
-          RESULT=$(kubectl -n patches-test get deployment podinfo -o jsonpath='{.metadata.labels.xxxx}')
-          if [ "$RESULT" != "$WANT" ]; then
-              echo -e "$RESULT\n\ndoes not equal\n\$WANT" && exit 1
-          fi
       - name: Logs
         run: |
           kubectl -n kustomize-system logs deploy/source-controller

controllers/kustomization_controller_patch_test.go

@@ -0,0 +1,195 @@
+/*
+Copyright 2021 The Flux 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 controllers
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"time"
+
+	sourcev1 "github.com/fluxcd/source-controller/api/v1beta1"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+	appsv1 "k8s.io/api/apps/v1"
+	corev1 "k8s.io/api/core/v1"
+	apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+
+	"github.com/fluxcd/pkg/apis/kustomize"
+	"github.com/fluxcd/pkg/apis/meta"
+	"github.com/fluxcd/pkg/testserver"
+
+	kustomizev1 "github.com/fluxcd/kustomize-controller/api/v1beta1"
+)
+
+const timeout = 10 * time.Second
+
+var _ = Describe("KustomizationReconciler", func() {
+	var (
+		artifactServer *testserver.ArtifactServer
+	)
+
+	BeforeEach(func() {
+		var err error
+		artifactServer, err = testserver.NewTempArtifactServer()
+		Expect(err).ToNot(HaveOccurred())
+		artifactServer.Start()
+	})
+
+	AfterEach(func() {
+		artifactServer.Stop()
+		os.RemoveAll(artifactServer.Root())
+	})
+
+	Context("Kustomize patches", func() {
+		var (
+			namespace        *corev1.Namespace
+			kubeconfig       *kustomizev1.KubeConfig
+			artifactFile     string
+			artifactChecksum string
+			artifactURL      string
+			kustomization    *kustomizev1.Kustomization
+		)
+		BeforeEach(func() {
+			namespace = &corev1.Namespace{}
+			namespace.Name = "patch-" + randStringRunes(5)
+			Expect(k8sClient.Create(context.Background(), namespace)).To(Succeed())
+
+			kubecfgSecret, err := kubeConfigSecret()
+			Expect(err).ToNot(HaveOccurred())
+			kubecfgSecret.Namespace = namespace.Name
+			Expect(k8sClient.Create(context.Background(), kubecfgSecret)).To(Succeed())
+			kubeconfig = &kustomizev1.KubeConfig{
+				SecretRef: meta.LocalObjectReference{
+					Name: kubecfgSecret.Name,
+				},
+			}
+
+			artifactFile = "patch-" + randStringRunes(5)
+			artifactChecksum, err = initArtifact(artifactServer, "testdata/patch", artifactFile)
+			Expect(err).ToNot(HaveOccurred())
+			artifactURL, err = artifactServer.URLForFile(artifactFile)
+			Expect(err).ToNot(HaveOccurred())
+
+			gitRepoKey := client.ObjectKey{
+				Name:      fmt.Sprintf("patch-%s", randStringRunes(5)),
+				Namespace: namespace.Name,
+			}
+			gitRepo := readyGitRepository(gitRepoKey, artifactURL, "main/"+artifactChecksum, artifactChecksum)
+			Expect(k8sClient.Create(context.Background(), gitRepo)).To(Succeed())
+			Expect(k8sClient.Status().Update(context.Background(), gitRepo)).To(Succeed())
+
+			kustomizationKey := types.NamespacedName{
+				Name:      "patch-" + randStringRunes(5),
+				Namespace: namespace.Name,
+			}
+			kustomization = &kustomizev1.Kustomization{
+				ObjectMeta: metav1.ObjectMeta{
+					Name:      kustomizationKey.Name,
+					Namespace: kustomizationKey.Namespace,
+				},
+				Spec: kustomizev1.KustomizationSpec{
+					Path:       "./",
+					KubeConfig: kubeconfig,
+					SourceRef: kustomizev1.CrossNamespaceSourceReference{
+						Name:      gitRepoKey.Name,
+						Namespace: gitRepoKey.Namespace,
+						Kind:      sourcev1.GitRepositoryKind,
+					},
+					TargetNamespace: namespace.Name,
+				},
+			}
+		})
+
+		AfterEach(func() {
+			Expect(k8sClient.Delete(context.Background(), namespace)).To(Succeed())
+		})
+
+		It("patches images", func() {
+			kustomization.Spec.Images = []kustomize.Image{
+				{
+					Name:    "podinfo",
+					NewName: "ghcr.io/stefanprodan/podinfo",
+					NewTag:  "5.2.0",
+				},
+			}
+			Expect(k8sClient.Create(context.TODO(), kustomization)).To(Succeed())
+
+			Eventually(func() bool {
+				var obj kustomizev1.Kustomization
+				_ = k8sClient.Get(context.Background(), ObjectKey(kustomization), &obj)
+				return obj.Status.LastAppliedRevision == "main/"+artifactChecksum
+			}, timeout, time.Second).Should(BeTrue())
+
+			var deployment appsv1.Deployment
+			Expect(k8sClient.Get(context.TODO(), client.ObjectKey{Name: "podinfo", Namespace: namespace.Name}, &deployment)).To(Succeed())
+			Expect(deployment.Spec.Template.Spec.Containers[0].Image).To(Equal("ghcr.io/stefanprodan/podinfo:5.2.0"))
+		})
+
+		It("strategic merge patches", func() {
+			kustomization.Spec.PatchesStrategicMerge = []apiextensionsv1.JSON{
+				{
+					Raw: []byte(`{"kind":"Deployment","apiVersion":"apps/v1","metadata":{"name":"podinfo","labels":{"xxxx":"yyyy"}}}`),
+				},
+			}
+			Expect(k8sClient.Create(context.TODO(), kustomization)).To(Succeed())
+
+			Eventually(func() bool {
+				var obj kustomizev1.Kustomization
+				_ = k8sClient.Get(context.Background(), ObjectKey(kustomization), &obj)
+				return obj.Status.LastAppliedRevision == "main/"+artifactChecksum
+			}, timeout, time.Second).Should(BeTrue())
+
+			var deployment appsv1.Deployment
+			Expect(k8sClient.Get(context.TODO(), client.ObjectKey{Name: "podinfo", Namespace: namespace.Name}, &deployment)).To(Succeed())
+			Expect(deployment.ObjectMeta.Labels["xxxx"]).To(Equal("yyyy"))
+		})
+
+		It("JSON6902 patches", func() {
+			kustomization.Spec.PatchesJSON6902 = []kustomize.JSON6902Patch{
+				{
+
+					Patch: []kustomize.JSON6902{
+						{Op: "add", Path: "/metadata/labels/yyyy", Value: &apiextensionsv1.JSON{Raw: []byte(`"xxxx"`)}},
+						{Op: "replace", Path: "/spec/replicas", Value: &apiextensionsv1.JSON{Raw: []byte("2")}},
+					},
+					Target: kustomize.Selector{
+						Group:   "apps",
+						Version: "v1",
+						Kind:    "Deployment",
+						Name:    "podinfo",
+					},
+				},
+			}
+			Expect(k8sClient.Create(context.TODO(), kustomization)).To(Succeed())
+
+			Eventually(func() bool {
+				var obj kustomizev1.Kustomization
+				_ = k8sClient.Get(context.Background(), ObjectKey(kustomization), &obj)
+				return obj.Status.LastAppliedRevision == "main/"+artifactChecksum
+			}, timeout, time.Second).Should(BeTrue())
+
+			var deployment appsv1.Deployment
+			Expect(k8sClient.Get(context.TODO(), client.ObjectKey{Name: "podinfo", Namespace: namespace.Name}, &deployment)).To(Succeed())
+			Expect(deployment.ObjectMeta.Labels["yyyy"]).To(Equal("xxxx"))
+			Expect(*deployment.Spec.Replicas).To(Equal(int32(2)))
+		})
+	})
+})