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.transform.fml.compare;
  
  import java.util.List;
  import java.util.stream.Collectors;
  
  import com.aliyun.fastmodel.core.tree.BaseStatement;
  import com.aliyun.fastmodel.transform.api.dialect.DialectNode;
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  
  /**
   * Fml Node Compare
   *
   * @author panguanjing
   * @date 2021/9/4
   */
  public class FmlNodeCompareTest {
  
      private FmlNodeCompare fmlNodeCompare = new FmlNodeCompare();
  
      @Test
      public void testCompare() {
          DialectNode before = new DialectNode("create dim table a (b bigint)");
          DialectNode after = new DialectNode("create dim table b (b bigint comment 'abc')");
          List<BaseStatement> compare = fmlNodeCompare.compare(before, after);
          String collect = compare.stream().map(BaseStatement::toString).collect(Collectors.joining("\n"));
          assertEquals(collect, "ALTER TABLE a RENAME TO b\n"
              + "ALTER TABLE b CHANGE COLUMN b b BIGINT COMMENT 'abc'");
      }
  
      @Test
      public void testCompare_with_delimited() {
          DialectNode before = new DialectNode("create dim table a (`b` bigint)");
          DialectNode after = new DialectNode("create dim table a (b bigint)");
          List<BaseStatement> compare = fmlNodeCompare.compare(before, after);
          String collect = compare.stream().map(BaseStatement::toString).collect(Collectors.joining("\n"));
          assertEquals(collect, "");
  
      }
  }