bug fix: fixed mongo.go unit test

backend/database/mongo_test.go

@@ -1,6 +1,7 @@
 package database
 
 import (
+	"crawlab/config"
 	. "github.com/smartystreets/goconvey/convey"
 	"github.com/spf13/viper"
 	"testing"
@@ -8,12 +9,20 @@ import (
 
 func TestGetDb(t *testing.T) {
 	Convey("Test GetDb", t, func() {
+		if err := config.InitConfig(""); err != nil {
+			t.Fatal("Init config failed")
+		}
+		t.Log("初始化配置成功")
+		err := InitMongo()
+		if err != nil {
+			t.Fatal("Init mongodb failed")
+		}
 		s, db := GetDb()
 		Convey("The value should be Session.Copy", func() {
-			So(s, ShouldEqual, Session.Copy())
+			So(s, ShouldResemble, Session.Copy())
 		})
 		Convey("The value should be reference of database", func() {
-			So(db, ShouldEqual, s.DB(viper.GetString("mongo.db")))
+			So(db, ShouldResemble, s.DB(viper.GetString("mongo.db")))
 		})
 	})
 }