ConnectionAdapterTest.java

/*
 * 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.sharding.jdbc.adapter;

import com.dangdang.ddframe.rdb.integrate.AbstractDBUnitTest;
import com.dangdang.ddframe.rdb.integrate.db.AbstractShardingDataBasesOnlyDBUnitTest;
import com.dangdang.ddframe.rdb.sharding.constants.DatabaseType;
import com.dangdang.ddframe.rdb.sharding.jdbc.ShardingConnection;
import com.dangdang.ddframe.rdb.sharding.jdbc.ShardingDataSource;
import org.junit.Before;
import org.junit.Test;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;

import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;

public final class ConnectionAdapterTest extends AbstractShardingDataBasesOnlyDBUnitTest {
    
    private ShardingDataSource shardingDataSource;
    
    @Before
    public void init() throws SQLException {
        shardingDataSource = getShardingDataSource();
    }
    
    @Test
    public void assertSetAutoCommit() throws SQLException {
        try (ShardingConnection actual = shardingDataSource.getConnection()) {
            assertTrue(actual.getAutoCommit());
            actual.setAutoCommit(false);
            actual.createStatement().executeQuery("SELECT `user_id` FROM `t_order` WHERE `status` = 'init'");
            assertAutoCommit(actual, false);
            actual.setAutoCommit(true);
            assertAutoCommit(actual, true);
        }
    }
    
    private void assertAutoCommit(final ShardingConnection actual, final boolean autoCommit) throws SQLException {
        assertThat(actual.getAutoCommit(), is(autoCommit));
        assertThat(actual.getConnections().size(), is(10));
        for (Connection each : actual.getConnections()) {
            assertThat(each.getAutoCommit(), is(autoCommit));
        }
    }
    
    @Test
    // TODO 缺少断言，做柔性事务时补充
    public void assertCommit() throws SQLException {
        try (ShardingConnection actual = shardingDataSource.getConnection()) {
            actual.setAutoCommit(false);
            actual.createStatement().executeQuery("SELECT `user_id` FROM `t_order` WHERE `status` = 'init'");
            actual.commit();
        }
    }
    
    @Test
    // TODO 缺少断言，做柔性事务时补充
    public void assertRollback() throws SQLException {
        try (ShardingConnection actual = shardingDataSource.getConnection()) {
            actual.setAutoCommit(false);
            actual.createStatement().executeQuery("SELECT `user_id` FROM `t_order` WHERE `status` = 'init'");
            actual.rollback();
        }
    }
    
    @Test
    public void assertClose() throws SQLException {
        try (ShardingConnection actual = shardingDataSource.getConnection()) {
            actual.createStatement().executeQuery("SELECT `user_id` FROM `t_order` WHERE `status` = 'init'");
            assertClose(actual, false);
            actual.close();
            assertClose(actual, true);
        }
    }
    
    private void assertClose(final ShardingConnection actual, final boolean closed) throws SQLException {
        assertThat(actual.isClosed(), is(closed));
        assertThat(actual.getConnections().size(), is(10));
        for (Connection each : actual.getConnections()) {
            assertThat(each.isClosed(), is(closed));
        }
    }
    
    @Test
    public void assertSetReadOnly() throws SQLException {
        try (ShardingConnection actual = shardingDataSource.getConnection()) {
            assertTrue(actual.isReadOnly());
            actual.setReadOnly(false);
            actual.createStatement().executeQuery("SELECT `user_id` FROM `t_order` WHERE `status` = 'init'");
            assertReadOnly(actual, false);
            actual.setReadOnly(true);
            assertReadOnly(actual, true);
        }
    }
    
    private void assertReadOnly(final ShardingConnection actual, final boolean readOnly) throws SQLException {
        assertThat(actual.isReadOnly(), is(readOnly));
        assertThat(actual.getConnections().size(), is(10));
        for (Connection each : actual.getConnections()) {
            // H2数据库未实现setReadOnly方法
            if (DatabaseType.H2 == AbstractDBUnitTest.CURRENT_DB_TYPE) {
                assertFalse(each.isReadOnly());
            } else {
                assertThat(each.isReadOnly(), is(readOnly));
            }
        }
    }
    
    @Test
    public void assertSetTransactionIsolation() throws SQLException {
        try (ShardingConnection actual = shardingDataSource.getConnection()) {
            assertThat(actual.getTransactionIsolation(), is(Connection.TRANSACTION_READ_UNCOMMITTED));
            actual.setTransactionIsolation(Connection.TRANSACTION_SERIALIZABLE);
            actual.createStatement().executeQuery("SELECT `user_id` FROM `t_order` WHERE `status` = 'init'");
            assertTransactionIsolation(actual, Connection.TRANSACTION_SERIALIZABLE);
            actual.setTransactionIsolation(Connection.TRANSACTION_READ_COMMITTED);
            assertTransactionIsolation(actual, Connection.TRANSACTION_READ_COMMITTED);
        }
    }
    
    private void assertTransactionIsolation(final ShardingConnection actual, final int transactionIsolation) throws SQLException {
        assertThat(actual.getTransactionIsolation(), is(transactionIsolation));
        assertThat(actual.getConnections().size(), is(10));
        for (Connection each : actual.getConnections()) {
            assertThat(each.getTransactionIsolation(), is(transactionIsolation));
        }
    }
    
    @Test
    public void assertGetWarnings() throws SQLException {
        try (ShardingConnection actual = shardingDataSource.getConnection()) {
            assertNull(actual.getWarnings());
        }
    }
    
    @Test
    public void assertClearWarnings() throws SQLException {
        try (ShardingConnection actual = shardingDataSource.getConnection()) {
            actual.clearWarnings();
        }
    }
    
    @Test
    public void assertGetHoldability() throws SQLException {
        try (ShardingConnection actual = shardingDataSource.getConnection()) {
            assertThat(actual.getHoldability(), is(ResultSet.CLOSE_CURSORS_AT_COMMIT));
        }
    }
    
    @Test
    public void assertSetHoldability() throws SQLException {
        try (ShardingConnection actual = shardingDataSource.getConnection()) {
            actual.setHoldability(ResultSet.CONCUR_READ_ONLY);
            assertThat(actual.getHoldability(), is(ResultSet.CLOSE_CURSORS_AT_COMMIT));
        }
    }
}