content: /*
   * Copyright 1999-2018 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.alibaba.druid.bvt.filter.wall.mysql;
  
  import com.alibaba.druid.wall.WallConfig;
  import com.alibaba.druid.wall.WallUtils;
  import junit.framework.TestCase;
  
  public class MySqlWallTest_union extends TestCase {
      public void testUnion() throws Exception {
          WallConfig config = new WallConfig();
          config.setSelectUnionCheck(true);
  
          assertFalse(WallUtils.isValidateMySql("select f1, f2 from t where id=1 union select 1, 2", config)); // not end of comment
          assertFalse(WallUtils.isValidateMySql("select f1, f2 from t where id=1 union select 1, 2 --", config));
  
          assertTrue(WallUtils.isValidateMySql("select f1, f2 from t union select 1, 2", config)); // no where
  
          assertFalse(WallUtils.isValidateMySql("select f1, f2 from t where id=1 union select null, '1', 2 --", config));
  
          assertTrue(WallUtils.isValidateMySql("select f1, f2 from t where id=1 union select c1, c2", config)); //union select item is not const
  
          assertTrue(WallUtils.isValidateMySql("SELECT typeid, typename FROM (SELECT typeid, typename FROM materialtype UNION ALL SELECT ? AS typeid, ? AS typename) a ORDER BY typeid",
                  config)); // union select item has alias
  
          assertFalse(WallUtils.isValidateMySql("select f1, f2 from (select 1 as f1, 2 as f2) t union select 'u1', 'u2' --", config)); // from is subQuery
  
          assertTrue(WallUtils.isValidateMySql("select f1, f2 from t where id=1 union select 'u1' as u1, 'u2' as u2", config)); // union select item has alias
      }
  
      public void testUnion2() throws Exception {
  //        assertFalse(
  //                WallUtils.isValidateMySql("SELECT name, surname FROM users WHERE name='' UNION SELECT @@version, 'string1'")
  //        );
  
          assertFalse(
                  WallUtils.isValidateMySql("SELECT name, surname FROM users WHERE name='' UNION SELECT /*! @@version,*/ 'string1'")
          );
  
          assertFalse(
                  WallUtils.isValidateMySql("SELECT name, surname FROM users WHERE name=' ' UNION SELECT /*! (select table_name FROM information_schema.tables limit 1,1),*/ 'string1'")
          );
      }
  }
  