content: // Copyright (c) 2025 Alibaba Group and its affiliates
  
  // 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 com.example.service;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.BeforeEach;
  import static org.junit.jupiter.api.Assertions.*;
  
  import java.sql.SQLException;
  
  /**
   * 功能测试类 - 测试DatabaseService的基本功能
   */
  public class FunctionalTest {
      
      private DatabaseService databaseService;
      
      @BeforeEach
      public void setUp() {
          databaseService = new DatabaseService();
      }
      
      
      /**
       * 测试带参数的URL格式验证
       */
      @Test
      public void testUrlWithParameters() {
          String urlWithParams = "jdbc:mysql://localhost:3306/testdb?useSSL=true&serverTimezone=UTC";
          
          // 同样，预期抛出SQLException因为无法实际连接
          assertThrows(
              SQLException.class,
              () -> databaseService.connectToDatabase(urlWithParams, "testuser", "testpass"),
              "带参数的URL应该被正确解析"
          );
      }
  } 