content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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.alibaba.druid.proxy.demo;
  
  import com.alibaba.druid.stat.JdbcStatManager;
  import junit.framework.TestCase;
  import org.junit.Assert;
  
  import java.sql.Connection;
  import java.sql.DriverManager;
  
  public class Demo1 extends TestCase {
      public void test_0() throws Exception {
          JdbcStatManager.getInstance().reset(); // 重置计数器
  
          Assert.assertEquals(0, JdbcStatManager.getInstance().getConnectionStat().getConnectCount());
          Assert.assertEquals(0, JdbcStatManager.getInstance().getConnectionStat().getCloseCount());
  
          String url = "jdbc:wrap-jdbc:filters=default:name=preCallTest:jdbc:derby:memory:Demo1;create=true";
          Connection conn = DriverManager.getConnection(url);
  
          Assert.assertEquals(1, JdbcStatManager.getInstance().getConnectionStat().getConnectCount());
          Assert.assertEquals(0, JdbcStatManager.getInstance().getConnectionStat().getCloseCount());
  
          conn.close();
  
          Assert.assertEquals(1, JdbcStatManager.getInstance().getConnectionStat().getConnectCount());
          Assert.assertEquals(1, JdbcStatManager.getInstance().getConnectionStat().getCloseCount());
      }
  }
  