Resolve "Containerised Southbound Interfaces and the corresponding device config representation within the controller"

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

Closes #159 (closed)

nucleus/plugin_test.go

+package nucleus
+
+import (
+	"crypto/md5"
+	"io"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+func generateHash(path, fileName string) (string, error) {
+	fp := filepath.Join("..", path, fileName)
+	f, err := os.Open(fp)
+	if err != nil {
+		return "", err
+	}
+	defer f.Close()
+
+	h := md5.New()
+	if _, err := io.Copy(h, f); err != nil {
+		return "", err
+	}
+
+	return string(h.Sum(nil)), nil
+}
+
+func TestBuildPlugin(t *testing.T) {
+	type args struct {
+		path, goStructName, pluginName string
+	}
+	tests := []struct {
+		name    string
+		args    args
+		want    string
+		wantErr bool
+	}{
+		{
+			name: "build success",
+			args: args{
+				path:         "test/plugin",
+				goStructName: "gostructs.go",
+				pluginName:   "plugin.so",
+			},
+			want:    "874c9f3d36f9cba5eb03c1e48b3ccc33",
+			wantErr: false,
+		},
+		{
+			name: "fail: file does not exist",
+			args: args{
+				path:         "test/plugin",
+				goStructName: "doesNotExist.go",
+			},
+			want:    "",
+			wantErr: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := BuildPlugin(tt.args.path, tt.args.goStructName)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("BuildPlugin() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+
+			hash, err := generateHash(tt.args.path, tt.args.pluginName)
+			if err != nil {
+				if tt.name != "fail: file does not exist" {
+					t.Errorf("BuildPlugin() error = %v", err)
+					return
+				}
+			}
+			cmp.Equal(hash, tt.want)
+			os.Remove(filepath.Join("..", tt.args.path, tt.args.pluginName))
+		})
+	}
+}
+
+func TestLoadPlugin(t *testing.T) {
+
+}