Merge pull request #1182 from prafull01/no-apitype

🐛 add error check when no apiType is provided for reconciliation

pkg/builder/controller.go

@@ -167,6 +167,10 @@ func (blder *Builder) Build(r reconcile.Reconciler) (controller.Controller, erro
 	if blder.forInput.err != nil {
 		return nil, blder.forInput.err
 	}
+	// Checking the reconcile type exist or not
+	if blder.forInput.object == nil {
+		return nil, fmt.Errorf("must provide an object for reconciliation")
+	}
 
 	// Set the Config
 	blder.loadRestConfig()

pkg/builder/controller_test.go

@@ -104,6 +104,18 @@ var _ = Describe("application", func() {
 			Expect(instance).To(BeNil())
 		})
 
+		It("should return an error if For function is not called", func() {
+			By("creating a controller manager")
+			m, err := manager.New(cfg, manager.Options{})
+			Expect(err).NotTo(HaveOccurred())
+
+			instance, err := ControllerManagedBy(m).
+				Owns(&appsv1.ReplicaSet{}).
+				Build(noop)
+			Expect(err).To(MatchError(ContainSubstring("must provide an object for reconciliation")))
+			Expect(instance).To(BeNil())
+		})
+
 		It("should return an error if there is no GVK for an object, and thus we can't default the controller name", func() {
 			By("creating a controller manager")
 			m, err := manager.New(cfg, manager.Options{})