/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.iotdb.db.integration.aligned;

import org.apache.iotdb.db.utils.EnvironmentUtils;
import org.apache.iotdb.itbase.category.LocalStandaloneTest;
import org.apache.iotdb.jdbc.Config;

import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;

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

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;

@Category({LocalStandaloneTest.class})
public class IoTDBEmptyDataIT {

  @BeforeClass
  public static void setUp() throws Exception {
    EnvironmentUtils.envSetUp();
    Class.forName(Config.JDBC_DRIVER_NAME);
    try (Connection connection =
            DriverManager.getConnection(
                Config.IOTDB_URL_PREFIX + "127.0.0.1:6667/", "root", "root");
        Statement statement = connection.createStatement()) {

      statement.execute("create aligned timeseries root.sg.d1(s1 int32);");
      statement.execute("insert into root.sg.d1(time, s1) aligned values(1400, null); ");
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  @AfterClass
  public static void tearDown() throws Exception {
    EnvironmentUtils.cleanEnv();
  }

  @Test
  public void selectAllAlignedWithoutValueFilterTest() throws ClassNotFoundException {

    Class.forName(Config.JDBC_DRIVER_NAME);
    try (Connection connection =
            DriverManager.getConnection(
                Config.IOTDB_URL_PREFIX + "127.0.0.1:6667/", "root", "root");
        Statement statement = connection.createStatement()) {

      try (ResultSet resultSet = statement.executeQuery("select * from root.sg.d1")) {
        int cnt = 0;
        while (resultSet.next()) {
          cnt++;
        }
        assertEquals(0, cnt);
      }

    } catch (SQLException e) {
      e.printStackTrace();
      fail(e.getMessage());
    }
  }
}
