考试插件bug

addons/exam/enum/UserStatus.php

@@ -5,7 +5,9 @@ namespace addons\exam\enum;
 class UserStatus extends BaseEnum
 {
     /** 正常 */
-    const NORMAL = 'normal';
+    const NORMAL = 1;
     /** 隐藏 */
-    const HIDDEN = 'hidden';
+    const HIDDEN = 0;
+    /** 注销 */
+    const CANCEL = -1;
 }