Add UTs to plugins

Deployment, service and namespace are plugins which offers CRUD
operations to manage their resources. They haven't implemented
Unit Tests which makes fragile to change/refactor the source code.
This change adds their corresponding Unit Tests and defines a
standard interface.

Change-Id: I1e1eb40f1a18ba33c74069a117462c8df17767ac
Signed-off-by: Victor Morales <victor.morales@intel.com>
Issue-ID: MULTICLOUD-301

13 files changed, 777 insertions, 166 deletions

diff --git a/src/k8splugin/Gopkg.lock b/src/k8splugin/Gopkg.lock
index 0fc98853..4ccf69ea 100644
--- a/src/k8splugin/Gopkg.lock
+++ b/src/k8splugin/Gopkg.lock
@@ -352,46 +352,77 @@
   version = "kubernetes-1.10.3"
 
 [[projects]]
-  digest = "1:0a4e3d4f41939942aa81b5900cd8332def6f529f2f286e521cc54d6d7874dbb8"
+  digest = "1:490b16761d2ded2729bf4e262eedc2d0df8b57d6f7d4f60a2893bb24be108331"
   name = "k8s.io/client-go"
   packages = [
     "discovery",
+    "discovery/fake",
     "kubernetes",
+    "kubernetes/fake",
     "kubernetes/scheme",
     "kubernetes/typed/admissionregistration/v1alpha1",
+    "kubernetes/typed/admissionregistration/v1alpha1/fake",
     "kubernetes/typed/admissionregistration/v1beta1",
+    "kubernetes/typed/admissionregistration/v1beta1/fake",
     "kubernetes/typed/apps/v1",
+    "kubernetes/typed/apps/v1/fake",
     "kubernetes/typed/apps/v1beta1",
+    "kubernetes/typed/apps/v1beta1/fake",
     "kubernetes/typed/apps/v1beta2",
+    "kubernetes/typed/apps/v1beta2/fake",
     "kubernetes/typed/authentication/v1",
+    "kubernetes/typed/authentication/v1/fake",
     "kubernetes/typed/authentication/v1beta1",
+    "kubernetes/typed/authentication/v1beta1/fake",
     "kubernetes/typed/authorization/v1",
+    "kubernetes/typed/authorization/v1/fake",
     "kubernetes/typed/authorization/v1beta1",
+    "kubernetes/typed/authorization/v1beta1/fake",
     "kubernetes/typed/autoscaling/v1",
+    "kubernetes/typed/autoscaling/v1/fake",
     "kubernetes/typed/autoscaling/v2beta1",
+    "kubernetes/typed/autoscaling/v2beta1/fake",
     "kubernetes/typed/batch/v1",
+    "kubernetes/typed/batch/v1/fake",
     "kubernetes/typed/batch/v1beta1",
+    "kubernetes/typed/batch/v1beta1/fake",
     "kubernetes/typed/batch/v2alpha1",
+    "kubernetes/typed/batch/v2alpha1/fake",
     "kubernetes/typed/certificates/v1beta1",
+    "kubernetes/typed/certificates/v1beta1/fake",
     "kubernetes/typed/core/v1",
+    "kubernetes/typed/core/v1/fake",
     "kubernetes/typed/events/v1beta1",
+    "kubernetes/typed/events/v1beta1/fake",
     "kubernetes/typed/extensions/v1beta1",
+    "kubernetes/typed/extensions/v1beta1/fake",
     "kubernetes/typed/networking/v1",
+    "kubernetes/typed/networking/v1/fake",
     "kubernetes/typed/policy/v1beta1",
+    "kubernetes/typed/policy/v1beta1/fake",
     "kubernetes/typed/rbac/v1",
+    "kubernetes/typed/rbac/v1/fake",
     "kubernetes/typed/rbac/v1alpha1",
+    "kubernetes/typed/rbac/v1alpha1/fake",
     "kubernetes/typed/rbac/v1beta1",
+    "kubernetes/typed/rbac/v1beta1/fake",
     "kubernetes/typed/scheduling/v1alpha1",
+    "kubernetes/typed/scheduling/v1alpha1/fake",
     "kubernetes/typed/settings/v1alpha1",
+    "kubernetes/typed/settings/v1alpha1/fake",
     "kubernetes/typed/storage/v1",
+    "kubernetes/typed/storage/v1/fake",
     "kubernetes/typed/storage/v1alpha1",
+    "kubernetes/typed/storage/v1alpha1/fake",
     "kubernetes/typed/storage/v1beta1",
+    "kubernetes/typed/storage/v1beta1/fake",
     "pkg/apis/clientauthentication",
     "pkg/apis/clientauthentication/v1alpha1",
     "pkg/version",
     "plugin/pkg/client/auth/exec",
     "rest",
     "rest/watch",
+    "testing",
     "tools/auth",
     "tools/clientcmd",
     "tools/clientcmd/api",
@@ -422,7 +453,10 @@
     "k8s.io/api/core/v1",
     "k8s.io/apimachinery/pkg/apis/meta/v1",
     "k8s.io/client-go/kubernetes",
+    "k8s.io/client-go/kubernetes/fake",
     "k8s.io/client-go/kubernetes/scheme",
+    "k8s.io/client-go/kubernetes/typed/apps/v1",
+    "k8s.io/client-go/kubernetes/typed/core/v1",
     "k8s.io/client-go/tools/clientcmd",
     "k8s.io/client-go/util/homedir",
   ]
diff --git a/src/k8splugin/Makefile b/src/k8splugin/Makefile
index 34b51982..510ac163 100644
--- a/src/k8splugin/Makefile
+++ b/src/k8splugin/Makefile
@@ -39,20 +39,16 @@ integration: clean
 	@go build -buildmode=plugin -o ./mock_files/mock_plugins/mockplugin.so ./mock_files/mock_plugins/mockplugin.go
 	@go test -v -tags 'integration' ./...
 
-.PHONY: format
 format:
 	@go fmt ./...
 
-.PHONY: plugins
 plugins:
 	@find plugins -type d -not -path plugins -exec sh -c "ls {}/plugin.go | xargs go build -buildmode=plugin -o $(basename {}).so" \;
 
-.PHONY: dep
 dep:
 	@go get -u $(DEPENDENCIES)
 	$(GOPATH)/bin/dep ensure
 
-.PHONY: clean
 clean:
 	find . -name "*so" -delete
 	@rm -f k8plugin
diff --git a/src/k8splugin/csar/parser.go b/src/k8splugin/csar/parser.go
index af4546c6..6cb07fc2 100644
--- a/src/k8splugin/csar/parser.go
+++ b/src/k8splugin/csar/parser.go
@@ -34,31 +34,31 @@ func generateExternalVNFID() string {
 	return hex.EncodeToString(b)
 }
 
-func ensuresNamespace(namespace string, kubeclient *kubernetes.Clientset) error {
+func ensuresNamespace(namespace string, kubeclient kubernetes.Interface) error {
 	namespacePlugin, ok := krd.LoadedPlugins["namespace"]
 	if !ok {
 		return pkgerrors.New("No plugin for namespace resource found")
 	}
 
-	symGetNamespaceFunc, err := namespacePlugin.Lookup("GetResource")
+	symGetNamespaceFunc, err := namespacePlugin.Lookup("Get")
 	if err != nil {
 		return pkgerrors.Wrap(err, "Error fetching get namespace function")
 	}
 
-	exists, err := symGetNamespaceFunc.(func(string, *kubernetes.Clientset) (bool, error))(
-		namespace, kubeclient)
+	ns, err := symGetNamespaceFunc.(func(string, string, kubernetes.Interface) (string, error))(
+		namespace, "", kubeclient)
 	if err != nil {
 		return pkgerrors.Wrap(err, "An error ocurred during the get namespace execution")
 	}
 
-	if !exists {
+	if ns == "" {
 		log.Println("Creating " + namespace + " namespace")
-		symGetNamespaceFunc, err := namespacePlugin.Lookup("CreateResource")
+		symGetNamespaceFunc, err := namespacePlugin.Lookup("Create")
 		if err != nil {
 			return pkgerrors.Wrap(err, "Error fetching create namespace plugin")
 		}
 
-		err = symGetNamespaceFunc.(func(string, *kubernetes.Clientset) error)(
+		err = symGetNamespaceFunc.(func(string, kubernetes.Interface) error)(
 			namespace, kubeclient)
 		if err != nil {
 			return pkgerrors.Wrap(err, "Error creating "+namespace+" namespace")
@@ -99,10 +99,10 @@ var CreateVNF = func(csarID string, cloudRegionID string, namespace string, kube
 			}
 			log.Println("Processing file: " + path)
 
-			genericKubeData := &krd.GenericKubeResourceData{
-				YamlFilePath:  path,
-				Namespace:     namespace,
-				InternalVNFID: internalVNFID,
+			genericKubeData := &krd.ResourceData{
+				YamlFilePath: path,
+				Namespace:    namespace,
+				VnfId:        internalVNFID,
 			}
 
 			typePlugin, ok := krd.LoadedPlugins[resource]
@@ -110,12 +110,12 @@ var CreateVNF = func(csarID string, cloudRegionID string, namespace string, kube
 				return "", nil, pkgerrors.New("No plugin for resource " + resource + " found")
 			}
 
-			symCreateResourceFunc, err := typePlugin.Lookup("CreateResource")
+			symCreateResourceFunc, err := typePlugin.Lookup("Create")
 			if err != nil {
 				return "", nil, pkgerrors.Wrap(err, "Error fetching "+resource+" plugin")
 			}
 
-			internalResourceName, err := symCreateResourceFunc.(func(*krd.GenericKubeResourceData, *kubernetes.Clientset) (string, error))(
+			internalResourceName, err := symCreateResourceFunc.(func(*krd.ResourceData, kubernetes.Interface) (string, error))(
 				genericKubeData, kubeclient)
 			if err != nil {
 				return "", nil, pkgerrors.Wrap(err, "Error in plugin "+resource+" plugin")
@@ -144,7 +144,7 @@ var DestroyVNF = func(data map[string][]string, namespace string, kubeclient *ku
 			return pkgerrors.New("No plugin for resource " + resourceName + " found")
 		}
 
-		symDeleteResourceFunc, err := typePlugin.Lookup("DeleteResource")
+		symDeleteResourceFunc, err := typePlugin.Lookup("Delete")
 		if err != nil {
 			return pkgerrors.Wrap(err, "Error fetching "+resourceName+" plugin")
 		}
@@ -153,7 +153,7 @@ var DestroyVNF = func(data map[string][]string, namespace string, kubeclient *ku
 
 			log.Println("Deleting resource: " + resourceName)
 
-			err = symDeleteResourceFunc.(func(string, string, *kubernetes.Clientset) error)(
+			err = symDeleteResourceFunc.(func(string, string, kubernetes.Interface) error)(
 				resourceName, namespace, kubeclient)
 			if err != nil {
 				return pkgerrors.Wrap(err, "Error destroying "+resourceName)
diff --git a/src/k8splugin/krd/plugins.go b/src/k8splugin/krd/plugins.go
index 612e3f6b..41b83226 100644
--- a/src/k8splugin/krd/plugins.go
+++ b/src/k8splugin/krd/plugins.go
@@ -14,31 +14,46 @@ limitations under the License.
 package krd
 
 import (
+	"io/ioutil"
+	"log"
+	"os"
 	"plugin"
 
-	appsV1 "k8s.io/api/apps/v1"
-	coreV1 "k8s.io/api/core/v1"
-	"k8s.io/client-go/kubernetes"
+	pkgerrors "github.com/pkg/errors"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/client-go/kubernetes/scheme"
 )
 
 // LoadedPlugins stores references to the stored plugins
 var LoadedPlugins = map[string]*plugin.Plugin{}
 
-// KubeResourceClient has the signature methods to create Kubernetes reources
-type KubeResourceClient interface {
-	CreateResource(GenericKubeResourceData, *kubernetes.Clientset) (string, error)
-	ListResources(string, string) (*[]string, error)
-	DeleteResource(string, string, *kubernetes.Clientset) error
-	GetResource(string, string, *kubernetes.Clientset) (string, error)
+const ResourcesListLimit = 10
+
+// ResourceData stores all supported Kubernetes plugin types
+type ResourceData struct {
+	YamlFilePath string
+	Namespace    string
+	VnfId        string
 }
 
-// GenericKubeResourceData stores all supported Kubernetes plugin types
-type GenericKubeResourceData struct {
-	YamlFilePath  string
-	Namespace     string
-	InternalVNFID string
+// DecodeYAML reads a YAMl file to extract the Kubernetes object definition
+var DecodeYAML = func(path string) (runtime.Object, error) {
+	if _, err := os.Stat(path); os.IsNotExist(err) {
+		return nil, pkgerrors.New("File " + path + " not found")
+	}
+
+	log.Println("Reading deployment YAML")
+	rawBytes, err := ioutil.ReadFile(path)
+	if err != nil {
+		return nil, pkgerrors.Wrap(err, "Deployment YAML file read error")
+	}
+
+	log.Println("Decoding deployment YAML")
+	decode := scheme.Codecs.UniversalDeserializer().Decode
+	obj, _, err := decode(rawBytes, nil, nil)
+	if err != nil {
+		return nil, pkgerrors.Wrap(err, "Deserialize deployment error")
+	}
 
-	// Add additional Kubernetes plugins below kinds
-	DeploymentData *appsV1.Deployment
-	ServiceData    *coreV1.Service
+	return obj, nil
 }
diff --git a/src/k8splugin/mock_files/mock_plugins/mockplugin.go b/src/k8splugin/mock_files/mock_plugins/mockplugin.go
index 9ceec342..c31e4fe2 100644
--- a/src/k8splugin/mock_files/mock_plugins/mockplugin.go
+++ b/src/k8splugin/mock_files/mock_plugins/mockplugin.go
@@ -21,23 +21,23 @@ import (
 
 func main() {}
 
-// CreateResource object in a specific Kubernetes resource
-func CreateResource(kubedata *krd.GenericKubeResourceData, kubeclient *kubernetes.Clientset) (string, error) {
+// Create object in a specific Kubernetes resource
+func Create(data *krd.ResourceData, client kubernetes.Interface) (string, error) {
 	return "externalUUID", nil
 }
 
-// ListResources of existing resources
-func ListResources(limit int64, namespace string, kubeclient *kubernetes.Clientset) (*[]string, error) {
+// List of existing resources
+func List(namespace string, client kubernetes.Interface) ([]string, error) {
 	returnVal := []string{"cloud1-default-uuid1", "cloud1-default-uuid2"}
-	return &returnVal, nil
+	return returnVal, nil
 }
 
-// DeleteResource existing resources
-func DeleteResource(name string, namespace string, kubeclient *kubernetes.Clientset) error {
+// Delete existing resources
+func Delete(name string, namespace string, client kubernetes.Interface) error {
 	return nil
 }
 
-// GetResource existing resource host
-func GetResource(namespace string, client *kubernetes.Clientset) (bool, error) {
-	return true, nil
+// Get existing resource host
+func Get(name string, namespace string, client kubernetes.Interface) (string, error) {
+	return name, nil
 }
diff --git a/src/k8splugin/mock_files/mock_yamls/deployment.yaml b/src/k8splugin/mock_files/mock_yamls/deployment.yaml
index eff2fc5a..49a30efc 100644
--- a/src/k8splugin/mock_files/mock_yamls/deployment.yaml
+++ b/src/k8splugin/mock_files/mock_yamls/deployment.yaml
@@ -12,7 +12,7 @@
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: sise-deploy
+  name: mock-deployment
 spec:
   template:
     metadata:
diff --git a/src/k8splugin/mock_files/mock_yamls/service.yaml b/src/k8splugin/mock_files/mock_yamls/service.yaml
index 297ab1b7..71938949 100644
--- a/src/k8splugin/mock_files/mock_yamls/service.yaml
+++ b/src/k8splugin/mock_files/mock_yamls/service.yaml
@@ -12,7 +12,7 @@
 apiVersion: v1
 kind: Service
 metadata:
-  name: sise-svc
+  name: mock-service
 spec:
   ports:
   - port: 80
diff --git a/src/k8splugin/plugins/deployment/plugin.go b/src/k8splugin/plugins/deployment/plugin.go
index 2b4c7cb7..97330b5b 100644
--- a/src/k8splugin/plugins/deployment/plugin.go
+++ b/src/k8splugin/plugins/deployment/plugin.go
@@ -14,55 +14,36 @@ limitations under the License.
 package main
 
 import (
-	"io/ioutil"
 	"log"
-	"os"
-
-	"k8s.io/client-go/kubernetes"
 
 	pkgerrors "github.com/pkg/errors"
 
 	appsV1 "k8s.io/api/apps/v1"
 	metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/client-go/kubernetes/scheme"
+	"k8s.io/client-go/kubernetes"
 
 	"k8splugin/krd"
 )
 
-// CreateResource object in a specific Kubernetes Deployment
-func CreateResource(kubedata *krd.GenericKubeResourceData, kubeclient *kubernetes.Clientset) (string, error) {
-	if kubedata.Namespace == "" {
-		kubedata.Namespace = "default"
-	}
-
-	if _, err := os.Stat(kubedata.YamlFilePath); err != nil {
-		return "", pkgerrors.New("File " + kubedata.YamlFilePath + " not found")
-	}
-
-	log.Println("Reading deployment YAML")
-	rawBytes, err := ioutil.ReadFile(kubedata.YamlFilePath)
-	if err != nil {
-		return "", pkgerrors.Wrap(err, "Deployment YAML file read error")
+// Create deployment object in a specific Kubernetes cluster
+func Create(data *krd.ResourceData, client kubernetes.Interface) (string, error) {
+	namespace := data.Namespace
+	if namespace == "" {
+		namespace = "default"
 	}
-
-	log.Println("Decoding deployment YAML")
-	decode := scheme.Codecs.UniversalDeserializer().Decode
-	obj, _, err := decode(rawBytes, nil, nil)
+	obj, err := krd.DecodeYAML(data.YamlFilePath)
 	if err != nil {
-		return "", pkgerrors.Wrap(err, "Deserialize deployment error")
+		return "", pkgerrors.Wrap(err, "Decode deployment object error")
 	}
 
-	switch o := obj.(type) {
-	case *appsV1.Deployment:
-		kubedata.DeploymentData = o
-	default:
-		return "", pkgerrors.New(kubedata.YamlFilePath + " contains another resource different than Deployment")
+	deployment, ok := obj.(*appsV1.Deployment)
+	if !ok {
+		return "", pkgerrors.New("Decoded object contains another resource different than Deployment")
 	}
+	deployment.Namespace = namespace
+	deployment.Name = data.VnfId + "-" + deployment.Name
 
-	kubedata.DeploymentData.Namespace = kubedata.Namespace
-	kubedata.DeploymentData.Name = kubedata.InternalVNFID + "-" + kubedata.DeploymentData.Name
-
-	result, err := kubeclient.AppsV1().Deployments(kubedata.Namespace).Create(kubedata.DeploymentData)
+	result, err := client.AppsV1().Deployments(namespace).Create(deployment)
 	if err != nil {
 		return "", pkgerrors.Wrap(err, "Create Deployment error")
 	}
@@ -70,14 +51,14 @@ func CreateResource(kubedata *krd.GenericKubeResourceData, kubeclient *kubernete
 	return result.GetObjectMeta().GetName(), nil
 }
 
-// ListResources of existing deployments hosted in a specific Kubernetes Deployment
-func ListResources(limit int64, namespace string, kubeclient *kubernetes.Clientset) (*[]string, error) {
+// List of existing deployments hosted in a specific Kubernetes cluster
+func List(namespace string, kubeclient kubernetes.Interface) ([]string, error) {
 	if namespace == "" {
 		namespace = "default"
 	}
 
 	opts := metaV1.ListOptions{
-		Limit: limit,
+		Limit: krd.ResourcesListLimit,
 	}
 	opts.APIVersion = "apps/v1"
 	opts.Kind = "Deployment"
@@ -87,38 +68,38 @@ func ListResources(limit int64, namespace string, kubeclient *kubernetes.Clients
 		return nil, pkgerrors.Wrap(err, "Get Deployment list error")
 	}
 
-	result := make([]string, 0, limit)
+	result := make([]string, 0, krd.ResourcesListLimit)
 	if list != nil {
 		for _, deployment := range list.Items {
+			log.Printf("%v", deployment.Name)
 			result = append(result, deployment.Name)
 		}
 	}
 
-	return &result, nil
+	return result, nil
 }
 
-// DeleteResource existing deployments hosting in a specific Kubernetes Deployment
-func DeleteResource(name string, namespace string, kubeclient *kubernetes.Clientset) error {
+// Delete an existing deployment hosted in a specific Kubernetes cluster
+func Delete(name string, namespace string, kubeclient kubernetes.Interface) error {
 	if namespace == "" {
 		namespace = "default"
 	}
 
-	log.Println("Deleting deployment: " + name)
-
 	deletePolicy := metaV1.DeletePropagationForeground
-	err := kubeclient.AppsV1().Deployments(namespace).Delete(name, &metaV1.DeleteOptions{
+	opts := &metaV1.DeleteOptions{
 		PropagationPolicy: &deletePolicy,
-	})
+	}
 
-	if err != nil {
+	log.Println("Deleting deployment: " + name)
+	if err := kubeclient.AppsV1().Deployments(namespace).Delete(name, opts); err != nil {
 		return pkgerrors.Wrap(err, "Delete Deployment error")
 	}
 
 	return nil
 }
 
-// GetResource existing deployment hosting in a specific Kubernetes Deployment
-func GetResource(name string, namespace string, kubeclient *kubernetes.Clientset) (string, error) {
+// Get an existing deployment hosted in a specific Kubernetes cluster
+func Get(name string, namespace string, kubeclient kubernetes.Interface) (string, error) {
 	if namespace == "" {
 		namespace = "default"
 	}
diff --git a/src/k8splugin/plugins/deployment/plugin_test.go b/src/k8splugin/plugins/deployment/plugin_test.go
new file mode 100644
index 00000000..636629a9
--- /dev/null
+++ b/src/k8splugin/plugins/deployment/plugin_test.go
@@ -0,0 +1,199 @@
+// +build unit
+
+/*
+Copyright 2018 Intel Corporation.
+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 main
+
+import (
+	"reflect"
+	"strings"
+	"testing"
+
+	"k8splugin/krd"
+
+	appsV1 "k8s.io/api/apps/v1"
+	metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	testclient "k8s.io/client-go/kubernetes/fake"
+)
+
+func TestCreateDeployment(t *testing.T) {
+	namespace := "test1"
+	name := "mock-deployment"
+	internalVNFID := "1"
+	testCases := []struct {
+		label          string
+		input          *krd.ResourceData
+		clientOutput   *appsV1.Deployment
+		expectedResult string
+		expectedError  string
+	}{
+		{
+			label: "Fail to create a deployment with non-existing file",
+			input: &krd.ResourceData{
+				YamlFilePath: "non-existing_test_file.yaml",
+			},
+			clientOutput:  &appsV1.Deployment{},
+			expectedError: "not found",
+		},
+		{
+			label: "Fail to create a deployment with invalid type",
+			input: &krd.ResourceData{
+				YamlFilePath: "../../mock_files/mock_yamls/service.yaml",
+			},
+			clientOutput:  &appsV1.Deployment{},
+			expectedError: "contains another resource different than Deployment",
+		},
+		{
+			label: "Successfully create a deployment",
+			input: &krd.ResourceData{
+				VnfId:        internalVNFID,
+				YamlFilePath: "../../mock_files/mock_yamls/deployment.yaml",
+			},
+			clientOutput: &appsV1.Deployment{
+				ObjectMeta: metaV1.ObjectMeta{
+					Name:      name,
+					Namespace: namespace,
+				},
+			},
+			expectedResult: internalVNFID + "-" + name,
+		},
+	}
+
+	for _, testCase := range testCases {
+		client := testclient.NewSimpleClientset(testCase.clientOutput)
+		t.Run(testCase.label, func(t *testing.T) {
+			result, err := Create(testCase.input, client)
+			if err != nil {
+				if !strings.Contains(string(err.Error()), testCase.expectedError) {
+					t.Fatalf("Create method returned an error (%s)", err)
+				}
+			}
+			if !reflect.DeepEqual(testCase.expectedResult, result) {
+				t.Fatalf("Create method returned %v and it was expected (%v)", result, testCase.expectedResult)
+			}
+		})
+	}
+}
+
+func TestListDeployment(t *testing.T) {
+	namespace := "test1"
+	testCases := []struct {
+		label          string
+		input          string
+		clientOutput   *appsV1.DeploymentList
+		expectedResult []string
+	}{
+		{
+			label:          "Sucessfully display an empty deployment list",
+			input:          namespace,
+			clientOutput:   &appsV1.DeploymentList{},
+			expectedResult: []string{},
+		},
+		{
+			label: "Sucessfully display a list of existing deployments",
+			input: namespace,
+			clientOutput: &appsV1.DeploymentList{
+				Items: []appsV1.Deployment{
+					appsV1.Deployment{
+						ObjectMeta: metaV1.ObjectMeta{
+							Name:      "test",
+							Namespace: namespace,
+						},
+					},
+				},
+			},
+			expectedResult: []string{"test"},
+		},
+	}
+
+	for _, testCase := range testCases {
+		client := testclient.NewSimpleClientset(testCase.clientOutput)
+		t.Run(testCase.label, func(t *testing.T) {
+			result, err := List(testCase.input, client)
+			if err != nil {
+				t.Fatalf("List method returned an error (%s)", err)
+			}
+			if !reflect.DeepEqual(testCase.expectedResult, result) {
+				t.Fatalf("List method returned %v and it was expected (%v)", result, testCase.expectedResult)
+			}
+		})
+	}
+}
+
+func TestDeleteDeployment(t *testing.T) {
+	namespace := "test1"
+	name := "mock-deployment"
+	testCases := []struct {
+		label        string
+		input        string
+		clientOutput *appsV1.Deployment
+	}{
+		{
+			label: "Sucessfully delete an existing deployment",
+			input: name,
+			clientOutput: &appsV1.Deployment{
+				ObjectMeta: metaV1.ObjectMeta{
+					Name:      name,
+					Namespace: namespace,
+				},
+			},
+		},
+	}
+
+	for _, testCase := range testCases {
+		client := testclient.NewSimpleClientset(testCase.clientOutput)
+		t.Run(testCase.label, func(t *testing.T) {
+			err := Delete(testCase.input, namespace, client)
+			if err != nil {
+				t.Fatalf("Delete method returned an error (%s)", err)
+			}
+		})
+	}
+}
+
+func TestGetDeployment(t *testing.T) {
+	namespace := "test1"
+	name := "mock-deployment"
+	testCases := []struct {
+		label          string
+		input          string
+		clientOutput   *appsV1.Deployment
+		expectedResult string
+	}{
+		{
+			label: "Sucessfully get an existing deployment",
+			input: name,
+			clientOutput: &appsV1.Deployment{
+				ObjectMeta: metaV1.ObjectMeta{
+					Name:      name,
+					Namespace: namespace,
+				},
+			},
+			expectedResult: name,
+		},
+	}
+
+	for _, testCase := range testCases {
+		client := testclient.NewSimpleClientset(testCase.clientOutput)
+		t.Run(testCase.label, func(t *testing.T) {
+			result, err := Get(testCase.input, namespace, client)
+			if err != nil {
+				t.Fatalf("Get method returned an error (%s)", err)
+			}
+			if !reflect.DeepEqual(testCase.expectedResult, result) {
+				t.Fatalf("Get method returned %v and it was expected (%v)", result, testCase.expectedResult)
+			}
+		})
+	}
+}
diff --git a/src/k8splugin/plugins/namespace/plugin.go b/src/k8splugin/plugins/namespace/plugin.go
index 986de863..e29ff43d 100644
--- a/src/k8splugin/plugins/namespace/plugin.go
+++ b/src/k8splugin/plugins/namespace/plugin.go
@@ -14,55 +14,85 @@ limitations under the License.
 package main
 
 import (
+	"log"
+
+	"k8s.io/client-go/kubernetes"
+
 	pkgerrors "github.com/pkg/errors"
 
 	coreV1 "k8s.io/api/core/v1"
 	metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/client-go/kubernetes"
+
+	"k8splugin/krd"
 )
 
-// CreateResource is used to create a new Namespace
-func CreateResource(namespace string, client *kubernetes.Clientset) error {
-	namespaceStruct := &coreV1.Namespace{
+// Create a namespace object in a specific Kubernetes cluster
+func Create(data *krd.ResourceData, client kubernetes.Interface) (string, error) {
+	namespace := &coreV1.Namespace{
 		ObjectMeta: metaV1.ObjectMeta{
-			Name: namespace,
+			Name: data.Namespace,
 		},
 	}
-	_, err := client.CoreV1().Namespaces().Create(namespaceStruct)
+	_, err := client.CoreV1().Namespaces().Create(namespace)
 	if err != nil {
-		return pkgerrors.Wrap(err, "Create Namespace error")
+		return "", pkgerrors.Wrap(err, "Create Namespace error")
 	}
-	return nil
+	return data.Namespace, nil
 }
 
-// GetResource is used to check if a given namespace actually exists in Kubernetes
-func GetResource(namespace string, client *kubernetes.Clientset) (bool, error) {
+// Get an existing namespace hosted in a specific Kubernetes cluster
+func Get(name string, namespace string, client kubernetes.Interface) (string, error) {
 	opts := metaV1.ListOptions{}
 
-	namespaceList, err := client.CoreV1().Namespaces().List(opts)
+	list, err := client.CoreV1().Namespaces().List(opts)
 	if err != nil {
-		return false, pkgerrors.Wrap(err, "Get Namespace list error")
+		return "", pkgerrors.Wrap(err, "Get Namespace list error")
 	}
 
-	for _, ns := range namespaceList.Items {
+	for _, ns := range list.Items {
 		if namespace == ns.Name {
-			return true, nil
+			return ns.Name, nil
 		}
 	}
 
-	return false, nil
+	return "", nil
 }
 
-// DeleteResource is used to delete a namespace
-func DeleteResource(namespace string, client *kubernetes.Clientset) error {
+// Delete an existing namespace hosted in a specific Kubernetes cluster
+func Delete(name string, namespace string, client kubernetes.Interface) error {
 	deletePolicy := metaV1.DeletePropagationForeground
-
-	err := client.CoreV1().Namespaces().Delete(namespace, &metaV1.DeleteOptions{
+	opts := &metaV1.DeleteOptions{
 		PropagationPolicy: &deletePolicy,
-	})
+	}
 
-	if err != nil {
-		return pkgerrors.Wrap(err, "Delete Namespace error")
+	log.Println("Deleting namespace: " + name)
+	if err := client.CoreV1().Namespaces().Delete(name, opts); err != nil {
+		return pkgerrors.Wrap(err, "Delete namespace error")
 	}
+
 	return nil
 }
+
+// List of existing namespaces hosted in a specific Kubernetes cluster
+func List(namespace string, client kubernetes.Interface) ([]string, error) {
+	opts := metaV1.ListOptions{
+		Limit: krd.ResourcesListLimit,
+	}
+	opts.APIVersion = "apps/v1"
+	opts.Kind = "Namespace"
+
+	list, err := client.CoreV1().Namespaces().List(opts)
+	if err != nil {
+		return nil, pkgerrors.Wrap(err, "Get Namespace list error")
+	}
+
+	result := make([]string, 0, krd.ResourcesListLimit)
+	if list != nil {
+		for _, deployment := range list.Items {
+			log.Printf("%v", deployment.Name)
+			result = append(result, deployment.Name)
+		}
+	}
+
+	return result, nil
+}
diff --git a/src/k8splugin/plugins/namespace/plugin_test.go b/src/k8splugin/plugins/namespace/plugin_test.go
new file mode 100644
index 00000000..fe60404d
--- /dev/null
+++ b/src/k8splugin/plugins/namespace/plugin_test.go
@@ -0,0 +1,170 @@
+// +build unit
+
+/*
+Copyright 2018 Intel Corporation.
+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 main
+
+import (
+	"reflect"
+	"strings"
+	"testing"
+
+	"k8splugin/krd"
+
+	coreV1 "k8s.io/api/core/v1"
+	metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	testclient "k8s.io/client-go/kubernetes/fake"
+)
+
+func TestCreateNamespace(t *testing.T) {
+	namespace := "test1"
+	testCases := []struct {
+		label          string
+		input          *krd.ResourceData
+		clientOutput   *coreV1.Namespace
+		expectedResult string
+		expectedError  string
+	}{
+		{
+			label: "Successfully create a namespace",
+			input: &krd.ResourceData{
+				Namespace: namespace,
+			},
+			clientOutput:   &coreV1.Namespace{},
+			expectedResult: namespace,
+		},
+	}
+
+	for _, testCase := range testCases {
+		client := testclient.NewSimpleClientset(testCase.clientOutput)
+		t.Run(testCase.label, func(t *testing.T) {
+			result, err := Create(testCase.input, client)
+			if err != nil {
+				if !strings.Contains(string(err.Error()), testCase.expectedError) {
+					t.Fatalf("Create method returned an error (%s)", err)
+				}
+			}
+			if !reflect.DeepEqual(testCase.expectedResult, result) {
+				t.Fatalf("Create method returned %v and it was expected (%v)", result, testCase.expectedResult)
+			}
+		})
+	}
+}
+
+func TestListNamespace(t *testing.T) {
+	namespace := "test1"
+	testCases := []struct {
+		label          string
+		input          string
+		clientOutput   *coreV1.NamespaceList
+		expectedResult []string
+	}{
+		{
+			label:          "Sucessfully to display an empty namespace list",
+			input:          namespace,
+			clientOutput:   &coreV1.NamespaceList{},
+			expectedResult: []string{},
+		},
+		{
+			label: "Sucessfully to display a list of existing namespaces",
+			input: namespace,
+			clientOutput: &coreV1.NamespaceList{
+				Items: []coreV1.Namespace{
+					coreV1.Namespace{
+						ObjectMeta: metaV1.ObjectMeta{
+							Name: namespace,
+						},
+					},
+				},
+			},
+			expectedResult: []string{namespace},
+		},
+	}
+
+	for _, testCase := range testCases {
+		client := testclient.NewSimpleClientset(testCase.clientOutput)
+		t.Run(testCase.label, func(t *testing.T) {
+			result, err := List(testCase.input, client)
+			if err != nil {
+				t.Fatalf("List method returned an error (%s)", err)
+			}
+			if !reflect.DeepEqual(testCase.expectedResult, result) {
+				t.Fatalf("List method returned %v and it was expected (%v)", result, testCase.expectedResult)
+			}
+		})
+	}
+}
+
+func TestDeleteNamespace(t *testing.T) {
+	namespace := "test1"
+	testCases := []struct {
+		label        string
+		input        string
+		clientOutput *coreV1.Namespace
+	}{
+		{
+			label: "Sucessfully to delete an existing namespace",
+			input: namespace,
+			clientOutput: &coreV1.Namespace{
+				ObjectMeta: metaV1.ObjectMeta{
+					Name: namespace,
+				},
+			},
+		},
+	}
+
+	for _, testCase := range testCases {
+		client := testclient.NewSimpleClientset(testCase.clientOutput)
+		t.Run(testCase.label, func(t *testing.T) {
+			err := Delete(testCase.input, namespace, client)
+			if err != nil {
+				t.Fatalf("Delete method returned an error (%s)", err)
+			}
+		})
+	}
+}
+
+func TestGetNamespace(t *testing.T) {
+	namespace := "test1"
+	testCases := []struct {
+		label          string
+		input          string
+		clientOutput   *coreV1.Namespace
+		expectedResult string
+	}{
+		{
+			label: "Sucessfully to get an existing namespace",
+			input: namespace,
+			clientOutput: &coreV1.Namespace{
+				ObjectMeta: metaV1.ObjectMeta{
+					Name: namespace,
+				},
+			},
+			expectedResult: namespace,
+		},
+	}
+
+	for _, testCase := range testCases {
+		client := testclient.NewSimpleClientset(testCase.clientOutput)
+		t.Run(testCase.label, func(t *testing.T) {
+			result, err := Get(testCase.input, namespace, client)
+			if err != nil {
+				t.Fatalf("Get method returned an error (%s)", err)
+			}
+			if !reflect.DeepEqual(testCase.expectedResult, result) {
+				t.Fatalf("Get method returned %v and it was expected (%v)", result, testCase.expectedResult)
+			}
+		})
+	}
+}
diff --git a/src/k8splugin/plugins/service/plugin.go b/src/k8splugin/plugins/service/plugin.go
index 36ef24f6..61609e98 100644
--- a/src/k8splugin/plugins/service/plugin.go
+++ b/src/k8splugin/plugins/service/plugin.go
@@ -14,9 +14,7 @@ limitations under the License.
 package main
 
 import (
-	"io/ioutil"
 	"log"
-	"os"
 
 	"k8s.io/client-go/kubernetes"
 
@@ -24,58 +22,44 @@ import (
 
 	coreV1 "k8s.io/api/core/v1"
 	metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/client-go/kubernetes/scheme"
 
 	"k8splugin/krd"
 )
 
-// CreateResource object in a specific Kubernetes Deployment
-func CreateResource(kubedata *krd.GenericKubeResourceData, kubeclient *kubernetes.Clientset) (string, error) {
-	if kubedata.Namespace == "" {
-		kubedata.Namespace = "default"
-	}
-
-	if _, err := os.Stat(kubedata.YamlFilePath); err != nil {
-		return "", pkgerrors.New("File " + kubedata.YamlFilePath + " not found")
-	}
-
-	log.Println("Reading service YAML")
-	rawBytes, err := ioutil.ReadFile(kubedata.YamlFilePath)
-	if err != nil {
-		return "", pkgerrors.Wrap(err, "Service YAML file read error")
+// Create a service object in a specific Kubernetes cluster
+func Create(data *krd.ResourceData, client kubernetes.Interface) (string, error) {
+	namespace := data.Namespace
+	if namespace == "" {
+		namespace = "default"
 	}
-
-	log.Println("Decoding service YAML")
-	decode := scheme.Codecs.UniversalDeserializer().Decode
-	obj, _, err := decode(rawBytes, nil, nil)
+	obj, err := krd.DecodeYAML(data.YamlFilePath)
 	if err != nil {
-		return "", pkgerrors.Wrap(err, "Deserialize service error")
+		return "", pkgerrors.Wrap(err, "Decode service object error")
 	}
 
-	switch o := obj.(type) {
-	case *coreV1.Service:
-		kubedata.ServiceData = o
-	default:
-		return "", pkgerrors.New(kubedata.YamlFilePath + " contains another resource different than Service")
+	service, ok := obj.(*coreV1.Service)
+	if !ok {
+		return "", pkgerrors.New("Decoded object contains another resource different than Service")
 	}
+	service.Namespace = namespace
+	service.Name = data.VnfId + "-" + service.Name
 
-	kubedata.ServiceData.Namespace = kubedata.Namespace
-	kubedata.ServiceData.Name = kubedata.InternalVNFID + "-" + kubedata.ServiceData.Name
-
-	result, err := kubeclient.CoreV1().Services(kubedata.Namespace).Create(kubedata.ServiceData)
+	result, err := client.CoreV1().Services(namespace).Create(service)
 	if err != nil {
 		return "", pkgerrors.Wrap(err, "Create Service error")
 	}
+
 	return result.GetObjectMeta().GetName(), nil
 }
 
-// ListResources of existing deployments hosted in a specific Kubernetes Deployment
-func ListResources(limit int64, namespace string, kubeclient *kubernetes.Clientset) (*[]string, error) {
+// List of existing services hosted in a specific Kubernetes cluster
+func List(namespace string, kubeclient kubernetes.Interface) ([]string, error) {
 	if namespace == "" {
 		namespace = "default"
 	}
+
 	opts := metaV1.ListOptions{
-		Limit: limit,
+		Limit: krd.ResourcesListLimit,
 	}
 	opts.APIVersion = "apps/v1"
 	opts.Kind = "Service"
@@ -84,36 +68,39 @@ func ListResources(limit int64, namespace string, kubeclient *kubernetes.Clients
 	if err != nil {
 		return nil, pkgerrors.Wrap(err, "Get Service list error")
 	}
-	result := make([]string, 0, limit)
+
+	result := make([]string, 0, krd.ResourcesListLimit)
 	if list != nil {
-		for _, service := range list.Items {
-			result = append(result, service.Name)
+		for _, deployment := range list.Items {
+			log.Printf("%v", deployment.Name)
+			result = append(result, deployment.Name)
 		}
 	}
-	return &result, nil
+
+	return result, nil
 }
 
-// DeleteResource deletes an existing Kubernetes service
-func DeleteResource(name string, namespace string, kubeclient *kubernetes.Clientset) error {
+// Delete an existing service hosted in a specific Kubernetes cluster
+func Delete(name string, namespace string, kubeclient kubernetes.Interface) error {
 	if namespace == "" {
 		namespace = "default"
 	}
 
-	log.Println("Deleting service: " + name)
-
 	deletePolicy := metaV1.DeletePropagationForeground
-	err := kubeclient.CoreV1().Services(namespace).Delete(name, &metaV1.DeleteOptions{
+	opts := &metaV1.DeleteOptions{
 		PropagationPolicy: &deletePolicy,
-	})
-	if err != nil {
-		return pkgerrors.Wrap(err, "Delete Service error")
+	}
+
+	log.Println("Deleting service: " + name)
+	if err := kubeclient.CoreV1().Services(namespace).Delete(name, opts); err != nil {
+		return pkgerrors.Wrap(err, "Delete service error")
 	}
 
 	return nil
 }
 
-// GetResource existing service hosting in a specific Kubernetes Service
-func GetResource(name string, namespace string, kubeclient *kubernetes.Clientset) (string, error) {
+// Get an existing service hosted in a specific Kubernetes cluster
+func Get(name string, namespace string, kubeclient kubernetes.Interface) (string, error) {
 	if namespace == "" {
 		namespace = "default"
 	}
diff --git a/src/k8splugin/plugins/service/plugin_test.go b/src/k8splugin/plugins/service/plugin_test.go
new file mode 100644
index 00000000..001467df
--- /dev/null
+++ b/src/k8splugin/plugins/service/plugin_test.go
@@ -0,0 +1,199 @@
+// +build unit
+
+/*
+Copyright 2018 Intel Corporation.
+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 main
+
+import (
+	"reflect"
+	"strings"
+	"testing"
+
+	"k8splugin/krd"
+
+	coreV1 "k8s.io/api/core/v1"
+	metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	testclient "k8s.io/client-go/kubernetes/fake"
+)
+
+func TestCreateService(t *testing.T) {
+	namespace := "test1"
+	name := "mock-service"
+	internalVNFID := "1"
+	testCases := []struct {
+		label          string
+		input          *krd.ResourceData
+		clientOutput   *coreV1.Service
+		expectedResult string
+		expectedError  string
+	}{
+		{
+			label: "Fail to create a service with non-existing file",
+			input: &krd.ResourceData{
+				YamlFilePath: "non-existing_test_file.yaml",
+			},
+			clientOutput:  &coreV1.Service{},
+			expectedError: "not found",
+		},
+		{
+			label: "Fail to create a service with invalid type",
+			input: &krd.ResourceData{
+				YamlFilePath: "../../mock_files/mock_yamls/deployment.yaml",
+			},
+			clientOutput:  &coreV1.Service{},
+			expectedError: "contains another resource different than Service",
+		},
+		{
+			label: "Successfully create a service",
+			input: &krd.ResourceData{
+				VnfId:        internalVNFID,
+				YamlFilePath: "../../mock_files/mock_yamls/service.yaml",
+			},
+			clientOutput: &coreV1.Service{
+				ObjectMeta: metaV1.ObjectMeta{
+					Name:      name,
+					Namespace: namespace,
+				},
+			},
+			expectedResult: internalVNFID + "-" + name,
+		},
+	}
+
+	for _, testCase := range testCases {
+		client := testclient.NewSimpleClientset(testCase.clientOutput)
+		t.Run(testCase.label, func(t *testing.T) {
+			result, err := Create(testCase.input, client)
+			if err != nil {
+				if !strings.Contains(string(err.Error()), testCase.expectedError) {
+					t.Fatalf("Create method returned an error (%s)", err)
+				}
+			}
+			if !reflect.DeepEqual(testCase.expectedResult, result) {
+				t.Fatalf("Create method returned %v and it was expected (%v)", result, testCase.expectedResult)
+			}
+		})
+	}
+}
+
+func TestListService(t *testing.T) {
+	namespace := "test1"
+	testCases := []struct {
+		label          string
+		input          string
+		clientOutput   *coreV1.ServiceList
+		expectedResult []string
+	}{
+		{
+			label:          "Sucessfully to display an empty service list",
+			input:          namespace,
+			clientOutput:   &coreV1.ServiceList{},
+			expectedResult: []string{},
+		},
+		{
+			label: "Sucessfully to display a list of existing services",
+			input: namespace,
+			clientOutput: &coreV1.ServiceList{
+				Items: []coreV1.Service{
+					coreV1.Service{
+						ObjectMeta: metaV1.ObjectMeta{
+							Name:      "test",
+							Namespace: namespace,
+						},
+					},
+				},
+			},
+			expectedResult: []string{"test"},
+		},
+	}
+
+	for _, testCase := range testCases {
+		client := testclient.NewSimpleClientset(testCase.clientOutput)
+		t.Run(testCase.label, func(t *testing.T) {
+			result, err := List(testCase.input, client)
+			if err != nil {
+				t.Fatalf("List method returned an error (%s)", err)
+			}
+			if !reflect.DeepEqual(testCase.expectedResult, result) {
+				t.Fatalf("List method returned %v and it was expected (%v)", result, testCase.expectedResult)
+			}
+		})
+	}
+}
+
+func TestDeleteService(t *testing.T) {
+	namespace := "test1"
+	name := "mock-service"
+	testCases := []struct {
+		label        string
+		input        string
+		clientOutput *coreV1.Service
+	}{
+		{
+			label: "Sucessfully to delete an existing service",
+			input: name,
+			clientOutput: &coreV1.Service{
+				ObjectMeta: metaV1.ObjectMeta{
+					Name:      name,
+					Namespace: namespace,
+				},
+			},
+		},
+	}
+
+	for _, testCase := range testCases {
+		client := testclient.NewSimpleClientset(testCase.clientOutput)
+		t.Run(testCase.label, func(t *testing.T) {
+			err := Delete(testCase.input, namespace, client)
+			if err != nil {
+				t.Fatalf("Delete method returned an error (%s)", err)
+			}
+		})
+	}
+}
+
+func TestGetService(t *testing.T) {
+	namespace := "test1"
+	name := "mock-service"
+	testCases := []struct {
+		label          string
+		input          string
+		clientOutput   *coreV1.Service
+		expectedResult string
+	}{
+		{
+			label: "Sucessfully to get an existing service",
+			input: name,
+			clientOutput: &coreV1.Service{
+				ObjectMeta: metaV1.ObjectMeta{
+					Name:      name,
+					Namespace: namespace,
+				},
+			},
+			expectedResult: name,
+		},
+	}
+
+	for _, testCase := range testCases {
+		client := testclient.NewSimpleClientset(testCase.clientOutput)
+		t.Run(testCase.label, func(t *testing.T) {
+			result, err := Get(testCase.input, namespace, client)
+			if err != nil {
+				t.Fatalf("Get method returned an error (%s)", err)
+			}
+			if !reflect.DeepEqual(testCase.expectedResult, result) {
+				t.Fatalf("Get method returned %v and it was expected (%v)", result, testCase.expectedResult)
+			}
+		})
+	}
+}