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

1 files changed, 199 insertions, 0 deletions

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)
+			}
+		})
+	}
+}