server/src/test/java/org/apache/iotdb/db/integration/IoTDBPathNumOverLimitIT.java

/*
 * 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;

import org.apache.iotdb.db.conf.IoTDBDescriptor;
import org.apache.iotdb.db.utils.EnvironmentUtils;
import org.apache.iotdb.jdbc.Config;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;

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

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

public class IoTDBPathNumOverLimitIT {

  @Before
  public void setUp() throws Exception {
    EnvironmentUtils.closeStatMonitor();
    EnvironmentUtils.envSetUp();
    Class.forName(Config.JDBC_DRIVER_NAME);
    IoTDBDescriptor.getInstance().getConfig().setMaxQueryDeduplicatedPathNum(2);
  }

  @After
  public void tearDown() throws Exception {
    EnvironmentUtils.cleanEnv();
    IoTDBDescriptor.getInstance().getConfig().setMaxQueryDeduplicatedPathNum(1000);
  }

  /** Test path num over limit, there is supposed to throw pathNumOverLimitException. */
  @Test
  public void pathNumOverLimitTest() {
    try (Connection connection =
            DriverManager.getConnection("jdbc:iotdb://127.0.0.1:6667/", "root", "root");
        Statement statement = connection.createStatement()) {

      statement.execute("insert into root.sg.d1(time, s1, s2, s3) values(1, 1, 1, 1)");

      // fail
      statement.execute("select * from root");
      fail();
    } catch (Exception e) {
      assertTrue(
          e.getMessage()
              .contains(
                  "Too many paths in one query! Currently allowed max deduplicated path number is 2."));
    }
  }
}