Add Some Unit Test

backend/config/config_test.go

@@ -0,0 +1,16 @@
+package config
+
+import (
+	. "github.com/smartystreets/goconvey/convey"
+	"testing"
+)
+
+func TestInitConfig(t *testing.T) {
+	Convey("Test InitConfig func", t, func() {
+		x := InitConfig("")
+
+		Convey("The value should be nil", func() {
+			So(x, ShouldEqual, nil)
+		})
+	})
+}

backend/database/mongo_test.go

@@ -0,0 +1,19 @@
+package database
+
+import (
+	. "github.com/smartystreets/goconvey/convey"
+	"github.com/spf13/viper"
+	"testing"
+)
+
+func TestGetDb(t *testing.T) {
+	Convey("Test GetDb", t, func() {
+		s, db := GetDb()
+		Convey("The value should be Session.Copy", func() {
+			So(s, ShouldEqual, Session.Copy())
+		})
+		Convey("The value should be reference of database", func() {
+			So(db, ShouldEqual, s.DB(viper.GetString("mongo.db")))
+		})
+	})
+}

backend/go.mod

@@ -11,5 +11,6 @@ require (
 	github.com/gomodule/redigo v2.0.0+incompatible
 	github.com/pkg/errors v0.8.1
 	github.com/satori/go.uuid v1.2.0
+	github.com/smartystreets/goconvey v0.0.0-20190731233626-505e41936337
 	github.com/spf13/viper v1.4.0
 )