/*
* Copyright 1999-2015 dangdang.com.
* <p>
* 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.
* </p>
*/
package com.dangdang.ddframe.rdb.integrate.nullable;
import java.math.BigDecimal;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import com.dangdang.ddframe.rdb.sharding.jdbc.ShardingDataSource;
import org.dbunit.DatabaseUnitException;
import org.hamcrest.CoreMatchers;
import org.junit.Before;
import org.junit.Test;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.hamcrest.MatcherAssert.assertThat;
public final class ShardingForNullableWithAggregateTest extends AbstractShardingNullableDBUnitTest {
private ShardingDataSource shardingDataSource;
@Before
public void init() throws SQLException {
shardingDataSource = getShardingDataSource();
}
@Test
public void assertSelectCount() throws SQLException, DatabaseUnitException {
String sql = "SELECT COUNT(`user_id`) FROM `t_order`";
try (Connection conn = shardingDataSource.getConnection();
PreparedStatement ps = conn.prepareStatement(sql);
ResultSet rs = ps.executeQuery()) {
assertThat(rs.next(), is(true));
assertThat(rs.getInt("COUNT(`user_id`)"), is(0));
assertThat(rs.getInt(1), is(0));
assertThat(rs.getObject("COUNT(`user_id`)"), CoreMatchers.<Object>is(new BigDecimal("0")));
assertThat(rs.getObject(1), CoreMatchers.<Object>is(new BigDecimal("0")));
assertThat(rs.next(), is(false));
}
}
@Test
public void assertSelectSum() throws SQLException, DatabaseUnitException {
String sql = "SELECT SUM(`user_id`) FROM `t_order`";
try (Connection conn = shardingDataSource.getConnection();
PreparedStatement ps = conn.prepareStatement(sql);
ResultSet rs = ps.executeQuery()) {
assertThat(rs.next(), is(true));
assertThat(rs.getInt("SUM(`user_id`)"), is(0));
assertThat(rs.getInt(1), is(0));
assertThat(rs.getObject("SUM(`user_id`)"), nullValue());
assertThat(rs.getObject(1), nullValue());
assertThat(rs.next(), is(false));
}
}
@Test
public void assertSelectMax() throws SQLException, DatabaseUnitException {
String sql = "SELECT MAX(`user_id`) FROM `t_order`";
try (Connection conn = shardingDataSource.getConnection();
PreparedStatement ps = conn.prepareStatement(sql);
ResultSet rs = ps.executeQuery()) {
assertThat(rs.next(), is(true));
assertThat(rs.getInt("MAX(`user_id`)"), is(0));
assertThat(rs.getInt(1), is(0));
assertThat(rs.getObject("MAX(`user_id`)"), nullValue());
assertThat(rs.getObject(1), nullValue());
assertThat(rs.next(), is(false));
}
}
@Test
public void assertSelectMin() throws SQLException, DatabaseUnitException {
String sql = "SELECT MIN(`user_id`) FROM `t_order`";
try (Connection conn = shardingDataSource.getConnection();
PreparedStatement ps = conn.prepareStatement(sql);
ResultSet rs = ps.executeQuery()) {
assertThat(rs.next(), is(true));
assertThat(rs.getInt("MIN(`user_id`)"), is(0));
assertThat(rs.getInt(1), is(0));
assertThat(rs.getObject("MIN(`user_id`)"), nullValue());
assertThat(rs.getObject(1), nullValue());
assertThat(rs.next(), is(false));
}
}
@Test
public void assertSelectAvg() throws SQLException, DatabaseUnitException {
String sql = "SELECT AVG(`user_id`) FROM `t_order`";
try (Connection conn = shardingDataSource.getConnection();
PreparedStatement ps = conn.prepareStatement(sql);
ResultSet rs = ps.executeQuery()) {
assertThat(rs.next(), is(true));
assertThat(rs.getInt("AVG(`user_id`)"), is(0));
assertThat(rs.getInt(1), is(0));
assertThat(rs.getObject("AVG(`user_id`)"), nullValue());
assertThat(rs.getObject(1), nullValue());
assertThat(rs.next(), is(false));
}
}
}