修复相关BUG + 增加单元测试, 覆盖率100%

header.go

@@ -9,15 +9,15 @@ package consts
 
 type HttpHeader string
 
-func (hh *HttpHeader) String() string {
-	return string(*hh)
+func (hh HttpHeader) String() string {
+	return string(hh)
 }
 
-func (hh *HttpHeader) MarshalJSON() ([]byte, error) {
-	return []byte(hh.String()), nil
+func (hh HttpHeader) MarshalJSON() ([]byte, error) {
+	return []byte(`"` + hh.String() + `"`), nil
 }
 
-var (
+const (
 	HeaderKeyAccessControlAllowOrigin   HttpHeader = "Access-Control-Allow-Origin"   // 标识允许哪个域的请求
 	HeaderKeyAccessControlAllowHeaders  HttpHeader = "Access-Control-Allow-Headers"  // 标识允许的请求header
 	HeaderKeyAccessControlAllowMethods  HttpHeader = "Access-Control-Allow-Methods"  // 标识允许的请求方法
@@ -25,7 +25,7 @@ var (
 	HeaderKeyAccessControlMaxAge        HttpHeader = "Access-Control-Max-Age"        // 控制发送预检请求options的频率，单位 : 秒
 )
 
-var (
+const (
 	HeaderKeyContentType    HttpHeader = "Content-Type"    // 请求头中Content-Type的key
 	HeaderKeyReferer        HttpHeader = "Referer"         // 请求头中Referer的key
 	HeaderKeyUserAgent      HttpHeader = "User-Agent"      // 请求头中User-Agent的key