fix UT and Sonar problem

core/error/error.go

@@ -1,54 +0,0 @@
-// Copyright 2020 beego
-//
-// 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 error
-
-import (
-	"fmt"
-
-	"github.com/pkg/errors"
-)
-
-type Code int32
-
-func (c Code) ToInt32() int32 {
-	return int32(c)
-}
-
-
-type Error struct {
-	Code Code
-	Msg string
-	Cause error
-}
-
-func (be *Error) String() string {
-	return fmt.Sprintf("code: %d, msg: %s", be.Code.ToInt32(), be.Msg)
-}
-
-func New(code Code, msg string) *Error {
-	return &Error{
-		Code: code,
-		Msg: msg,
-	}
-}
-
-func Wrap(cause error, code Code, msg string) {
-	errors.Wrap()
-}
-
-func Convert(err error) *Error {
-
-}
-