iotdb-core/datanode/src/test/java/org/apache/iotdb/db/queryengine/plan/planner/node/process/LimitNodeSerdeTest.java

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 * to you under the Apache License, Version 2.0 (the
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package org.apache.iotdb.db.queryengine.plan.planner.node.process;

import org.apache.iotdb.commons.exception.IllegalPathException;
import org.apache.iotdb.commons.path.MeasurementPath;
import org.apache.iotdb.db.queryengine.plan.planner.node.PlanNodeDeserializeHelper;
import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanNodeId;
import org.apache.iotdb.db.queryengine.plan.planner.plan.node.process.LimitNode;
import org.apache.iotdb.db.queryengine.plan.planner.plan.node.process.OffsetNode;
import org.apache.iotdb.db.queryengine.plan.planner.plan.node.source.SeriesScanNode;
import org.apache.iotdb.db.queryengine.plan.statement.component.Ordering;

import org.apache.tsfile.enums.TSDataType;
import org.junit.Test;

import java.nio.ByteBuffer;

import static org.junit.Assert.assertEquals;

public class LimitNodeSerdeTest {

  @Test
  public void testSerializeAndDeserialize() throws IllegalPathException {
    SeriesScanNode seriesScanNode =
        new SeriesScanNode(
            new PlanNodeId("TestSeriesScanNode"),
            new MeasurementPath("root.sg.d1.s1", TSDataType.INT32),
            Ordering.DESC,
            null,
            100,
            100,
            null);
    OffsetNode offsetNode = new OffsetNode(new PlanNodeId("TestOffsetNode"), seriesScanNode, 2);
    LimitNode limitNode = new LimitNode(new PlanNodeId("TestLimitNode"), offsetNode, 3);

    ByteBuffer byteBuffer = ByteBuffer.allocate(2048);
    limitNode.serialize(byteBuffer);
    byteBuffer.flip();
    assertEquals(PlanNodeDeserializeHelper.deserialize(byteBuffer), limitNode);
  }
}