content: /*
   * Copyright 2021-2022 Alibaba Group Holding Ltd.
   *
   *    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.
   */
  
  package com.aliyun.fastmodel.compare.impl;
  
  import java.util.List;
  
  import com.aliyun.fastmodel.compare.CompareStrategy;
  import com.aliyun.fastmodel.core.tree.BaseStatement;
  import com.aliyun.fastmodel.core.tree.QualifiedName;
  import com.aliyun.fastmodel.core.tree.statement.table.DropTable;
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  
  /**
   * Desc:
   *
   * @author panguanjing
   * @date 2021/2/24
   */
  public class DropTableCompareNodeTest {
  
      @Test
      public void testDropTable() {
          DropTableCompareNode dropTableCompareNode = new DropTableCompareNode();
          List<BaseStatement> statements = dropTableCompareNode.compareResult(null,
              new DropTable(QualifiedName.of("a.b")),
              CompareStrategy.INCREMENTAL
          );
          assertEquals(statements.size(), 1);
          BaseStatement statement = statements.get(0);
          assertEquals(statement.toString(), "DROP TABLE a.b");
      }
  
      @Test(expected = IllegalArgumentException.class)
      public void testDropTableWithAfterNull() {
          DropTableCompareNode dropTableCompareNode = new DropTableCompareNode();
          List<BaseStatement> statements = dropTableCompareNode.compareResult(new DropTable(QualifiedName.of("a.b")),
              null,
              CompareStrategy.INCREMENTAL
          );
          assertEquals(statements.size(), 0);
      }
  }