add test for manager.

Author: llcao

go.mod

@@ -41,6 +41,7 @@ require (
 	github.com/kylelemons/godebug v1.1.0
 	github.com/mholt/archiver v3.1.1+incompatible
 	github.com/nwaples/rardecode v1.0.0 // indirect
+	github.com/onsi/gomega v1.5.0
 	github.com/openshift/api v3.9.1-0.20191008181517-e4fd21196097+incompatible // indirect
 	github.com/openshift/cluster-network-operator v0.0.0-20191009144453-fdceef8e1a7b
 	github.com/pierrec/lz4 v2.2.5+incompatible // indirect

pkg/controller/istiocontrolplane/istiocontrolplane_controller_suit_test.go

@@ -0,0 +1,81 @@
+// Copyright 2019 Istio 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 istiocontrolplane
+
+import (
+	"os"
+	"path/filepath"
+	"sync"
+	"testing"
+
+	"github.com/onsi/gomega"
+	"k8s.io/client-go/kubernetes/scheme"
+	"k8s.io/client-go/rest"
+	"sigs.k8s.io/controller-runtime/pkg/envtest"
+	"sigs.k8s.io/controller-runtime/pkg/manager"
+	"sigs.k8s.io/controller-runtime/pkg/reconcile"
+
+	"istio.io/operator/pkg/apis"
+	"istio.io/pkg/log"
+)
+
+var cfg *rest.Config
+
+func TestMain(m *testing.M) {
+	t := &envtest.Environment{
+		CRDDirectoryPaths: []string{
+			filepath.Join("..", "..", "..", "deploy", "crds"),
+		},
+	}
+
+	apis.AddToScheme(scheme.Scheme)
+
+	var err error
+	if cfg, err = t.Start(); err != nil {
+		log.Fatalf("error to start the test env: %s", err)
+	}
+
+	code := m.Run()
+
+	t.Stop()
+	os.Exit(code)
+}
+
+// SetupTestReconcile returns a reconcile.Reconcile implementation that delegates to inner and
+// writes the request to requests after Reconcile is finished.
+func SetupTestReconcile(inner reconcile.Reconciler) (reconcile.Reconciler, chan reconcile.Request) {
+	requests := make(chan reconcile.Request)
+	fn := reconcile.Func(func(req reconcile.Request) (reconcile.Result, error) {
+		result, err := inner.Reconcile(req)
+		requests <- req
+		return result, err
+	})
+
+	return fn, requests
+}
+
+// StartTestManager adds recFn
+func StartTestManager(mgr manager.Manager, g *gomega.GomegaWithT) (chan struct{}, *sync.WaitGroup) {
+	stop := make(chan struct{})
+	wg := &sync.WaitGroup{}
+	wg.Add(1)
+
+	go func() {
+		defer wg.Done()
+		g.Expect(mgr.Start(stop)).NotTo(gomega.HaveOccurred())
+	}()
+
+	return stop, wg
+}

pkg/controller/istiocontrolplane/istiocontrolplane_controller_test.go

@@ -19,6 +19,9 @@ import (
 	"fmt"
 	"strconv"
 	"testing"
+	"time"
+
+	"github.com/onsi/gomega"
 
 	"istio.io/operator/pkg/apis/istio/v1alpha2"
 	"istio.io/operator/pkg/helmreconciler"
@@ -29,10 +32,26 @@ import (
 	"k8s.io/client-go/kubernetes/scheme"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/client/fake"
+	"sigs.k8s.io/controller-runtime/pkg/manager"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
 )
 
+const (
+	timeout        = time.Second * 2
+	defaultProfile = "default"
+	demoProfile    = "demo"
+	minimalProfile = "minimal"
+	sdsProfile     = "sds"
+)
+
 var (
+	c      client.Client
+	icpkey = types.NamespacedName{
+		Name:      "test-istiocontrolplane",
+		Namespace: "test-istio-operator",
+	}
+	expectedRequest = reconcile.Request{NamespacedName: icpkey}
+
 	minimalStatus = map[string]*v1alpha2.InstallStatus_VersionStatus{
 		"Pilot": {
 			Status: v1alpha2.InstallStatus_HEALTHY,
@@ -156,28 +175,28 @@ func TestICPController_SwitchProfile(t *testing.T) {
 	cases := []testCase{
 		{
 			description:    "switch profile from minimal to default",
-			initialProfile: "minimal",
-			targetProfile:  "default",
+			initialProfile: minimalProfile,
+			targetProfile:  defaultProfile,
 		},
 		{
 			description:    "switch profile from default to minimal",
-			initialProfile: "default",
-			targetProfile:  "minimal",
+			initialProfile: defaultProfile,
+			targetProfile:  minimalProfile,
 		},
 		{
 			description:    "switch profile from default to demo",
-			initialProfile: "default",
-			targetProfile:  "demo",
+			initialProfile: defaultProfile,
+			targetProfile:  demoProfile,
 		},
 		{
 			description:    "switch profile from demo to sds",
-			initialProfile: "demo",
-			targetProfile:  "sds",
+			initialProfile: demoProfile,
+			targetProfile:  sdsProfile,
 		},
 		{
 			description:    "switch profile from sds to default",
-			initialProfile: "sds",
-			targetProfile:  "default",
+			initialProfile: sdsProfile,
+			targetProfile:  defaultProfile,
 		},
 	}
 	for i, c := range cases {
@@ -186,14 +205,15 @@ func TestICPController_SwitchProfile(t *testing.T) {
 		})
 	}
 }
+
 func testSwitchProfile(t *testing.T, c testCase) {
 	t.Helper()
-	name := "example-istiocontrolplane"
-	namespace := "istio-system"
 	icp := &v1alpha2.IstioControlPlane{
+		Kind:       "IstioControlPlane",
+		ApiVersion: "install.istio.io/v1alpha2",
 		ObjectMeta: metav1.ObjectMeta{
-			Name:      name,
-			Namespace: namespace,
+			Name:      icpkey.Name,
+			Namespace: icpkey.Namespace,
 		},
 		Spec: &v1alpha2.IstioControlPlaneSpec{
 			Profile: c.initialProfile,
@@ -211,8 +231,8 @@ func testSwitchProfile(t *testing.T, c testCase) {
 
 	req := reconcile.Request{
 		NamespacedName: types.NamespacedName{
-			Name:      name,
-			Namespace: namespace,
+			Name:      icpkey.Name,
+			Namespace: icpkey.Namespace,
 		},
 	}
 	res, err := r.Reconcile(req)
@@ -270,13 +290,13 @@ func checkICPStatus(cl client.Client, key client.ObjectKey, profile string) (boo
 	}
 	var status map[string]*v1alpha2.InstallStatus_VersionStatus
 	switch profile {
-	case "minimal":
+	case minimalProfile:
 		status = minimalStatus
-	case "default":
+	case defaultProfile:
 		status = defaultStatus
-	case "sds":
+	case sdsProfile:
 		status = sdsStatus
-	case "demo":
+	case demoProfile:
 		status = demoStatus
 	}
 	installStatus := instance.GetStatus()
@@ -296,3 +316,45 @@ func checkICPStatus(cl client.Client, key client.ObjectKey, profile string) (boo
 	}
 	return true, nil
 }
+
+// TestReconcile test the reconciler process with manager from end to end.
+func TestReconcile(t *testing.T) {
+	g := gomega.NewGomegaWithT(t)
+
+	// Setup the Manager and Controller. Wrap the Controller Reconcile function so it writes each request to a
+	// channel when it is finished.
+	mgr, err := manager.New(cfg, manager.Options{})
+	g.Expect(err).NotTo(gomega.HaveOccurred())
+
+	c = mgr.GetClient()
+
+	rec := newReconciler(mgr)
+	recFn, requests := SetupTestReconcile(rec)
+
+	g.Expect(add(mgr, recFn)).NotTo(gomega.HaveOccurred())
+
+	stopMgr, mgrStopped := StartTestManager(mgr, g)
+
+	defer func() {
+		close(stopMgr)
+		mgrStopped.Wait()
+	}()
+
+	icp := &v1alpha2.IstioControlPlane{
+		Kind:       "IstioControlPlane",
+		ApiVersion: "install.istio.io/v1alpha2",
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      icpkey.Name,
+			Namespace: icpkey.Namespace,
+		},
+		Spec: &v1alpha2.IstioControlPlaneSpec{
+			Profile: defaultProfile,
+		},
+	}
+
+	g.Expect(c.Create(context.TODO(), icp)).NotTo(gomega.HaveOccurred())
+
+	defer c.Delete(context.TODO(), icp)
+
+	g.Eventually(requests, timeout).Should(gomega.Receive(gomega.Equal(expectedRequest)))
+}