/*
 * 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.bvt.filter;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

import org.junit.Assert;
import junit.framework.TestCase;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.stat.JdbcSqlStat;
import com.alibaba.druid.stat.JdbcStatManager;
import com.alibaba.druid.util.JdbcUtils;

public class StatFilterAfterResetTest extends TestCase {
    private DruidDataSource dataSource;

    protected void setUp() throws Exception {
        dataSource = new DruidDataSource();

        dataSource.setUrl("jdbc:mock:xxx");
        dataSource.setFilters("stat");

        dataSource.init();
    }

    protected void tearDown() throws Exception {
        JdbcUtils.close(dataSource);
    }

    public void test_stat() throws Exception {
        final String sql = "SELECT 1";
        Assert.assertTrue(dataSource.isInited());

        JdbcSqlStat sqlStat = dataSource.getDataSourceStat().getSqlStat(sql);

        Assert.assertNull(sqlStat);

        {
            Connection conn = dataSource.getConnection();
            PreparedStatement stmt = conn.prepareStatement(sql);
            ResultSet rs = stmt.executeQuery();
            rs.next();
            rs.close();

            sqlStat = dataSource.getDataSourceStat().getSqlStat(sql);
            Assert.assertNotNull(sqlStat);

            Assert.assertEquals("first failed", 1, sqlStat.getExecuteAndResultHoldTimeHistogramSum());

            rs.close();

            Assert.assertEquals("second failed", 1, sqlStat.getExecuteAndResultHoldTimeHistogramSum());

            stmt.close();

            conn.close();

            Assert.assertEquals(1, sqlStat.getExecuteAndResultHoldTimeHistogramSum());
        }

        JdbcStatManager.getInstance().reset();

        Assert.assertFalse(sqlStat.isRemoved());

        JdbcStatManager.getInstance().reset();
        Assert.assertTrue(sqlStat.isRemoved());

        {
            Connection conn = dataSource.getConnection();
            PreparedStatement stmt = conn.prepareStatement(sql);
            ResultSet rs = stmt.executeQuery();
            rs.next();
            rs.close();
            conn.close();
        }

        Assert.assertNotSame(sqlStat, dataSource.getDataSourceStat().getSqlStat(sql));

        {
            Assert.assertEquals(0, sqlStat.getExecuteAndResultHoldTimeHistogramSum());
        }

        sqlStat = dataSource.getDataSourceStat().getSqlStat(sql);

        Assert.assertEquals(1, sqlStat.getExecuteAndResultHoldTimeHistogramSum());
    }
}
