fix: improve test logic for LDAP connection string

Author: iaorekhov-1980

fe/fe-core/src/main/java/org/apache/doris/mysql/authenticate/ldap/LdapClient.java

@@ -107,7 +107,7 @@ public boolean checkUpdate(String ldapPassword) {
             return this.ldapPassword == null || !this.ldapPassword.equals(ldapPassword);
         }
 
-        public String getURL() {
+        private String getURL() {
             return ((LdapConfig.ldap_use_ssl ? "ldaps" : "ldap") + "://" + NetUtils
                     .getHostPortInAccessibleFormat(LdapConfig.ldap_host, LdapConfig.ldap_port));
         }
@@ -231,6 +231,11 @@ protected String doMapFromContext(DirContextOperations ctx) {
         }
     }
 
+    @VisibleForTesting
+    public String getURL() {
+        return clientInfo.getURL();
+    }
+
     private String getUserFilter(String userFilter, String userName) {
         return userFilter.replaceAll("\\{login}", userName);
     }

fe/fe-core/src/test/java/org/apache/doris/mysql/authenticate/ldap/LdapClientTest.java

@@ -22,7 +22,6 @@
 
 import mockit.Expectations;
 import mockit.Tested;
-
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;