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.sql.mysql;
  
  import com.alibaba.druid.sql.SQLUtils;
  import com.alibaba.druid.sql.ast.SQLStatement;
  import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
  import com.alibaba.druid.sql.parser.SQLStatementParser;
  import junit.framework.TestCase;
  
  import java.util.List;
  
  public class DeleteSyntaxTest extends TestCase {
      public void test_0() throws Exception {
          String sql = "DELETE FROM somelog WHERE user = 'jcole' ORDER BY timestamp_column LIMIT 1;";
  
          SQLStatementParser parser = new MySqlStatementParser(sql);
          List<SQLStatement> stmtList = parser.parseStatementList();
  
          SQLStatement stmt = stmtList.get(0);
  
          assertEquals("DELETE FROM somelog\nWHERE user = 'jcole'\nORDER BY timestamp_column\nLIMIT 1;", SQLUtils.toMySqlString(stmt));
      }
  
      public void test_1() throws Exception {
          String sql = "DELETE t1 FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.id IS NULL;";
  
          SQLStatementParser parser = new MySqlStatementParser(sql);
          List<SQLStatement> stmtList = parser.parseStatementList();
  
          SQLStatement stmt = stmtList.get(0);
  
          assertEquals("DELETE t1" +
                  "\nFROM t1" +
                  "\n\tLEFT JOIN t2 ON t1.id = t2.id" +
                  "\nWHERE t2.id IS NULL;", SQLUtils.toMySqlString(stmt));
      }
  
      public void test_2() throws Exception {
          String sql = "DELETE a1, a2 FROM t1 AS a1 INNER JOIN t2 AS a2 WHERE a1.id=a2.id";
  
          SQLStatementParser parser = new MySqlStatementParser(sql);
          List<SQLStatement> stmtList = parser.parseStatementList();
  
          SQLStatement stmt = stmtList.get(0);
  
          assertEquals("DELETE a1, a2\nFROM t1 a1" +
                  "\n\tINNER JOIN t2 a2" +
                  "\nWHERE a1.id = a2.id", SQLUtils.toMySqlString(stmt));
      }
  
      public void test_3() throws Exception {
          String sql = "DELETE FROM a1, a2 USING t1 AS a1 INNER JOIN t2 AS a2 WHERE a1.id=a2.id";
  
          SQLStatementParser parser = new MySqlStatementParser(sql);
          List<SQLStatement> stmtList = parser.parseStatementList();
  
          SQLStatement stmt = stmtList.get(0);
  
          assertEquals("DELETE FROM a1, a2\n" +
                  "USING t1 a1\n" +
                  "\tINNER JOIN t2 a2\n" +
                  "WHERE a1.id = a2.id", SQLUtils.toMySqlString(stmt));
          assertEquals("delete from a1, a2\n" +
                  "using t1 a1\n" +
                  "\tinner join t2 a2\n" +
                  "where a1.id = a2.id", SQLUtils.toMySqlString(stmt, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION));
      }
  
      public void test_4() throws Exception {
          String sql = "DELETE LOW_PRIORITY QUICK IGNORE FROM T";
  
          SQLStatementParser parser = new MySqlStatementParser(sql);
          List<SQLStatement> stmtList = parser.parseStatementList();
  
          SQLStatement stmt = stmtList.get(0);
  
          assertEquals("DELETE LOW_PRIORITY QUICK IGNORE FROM T", SQLUtils.toMySqlString(stmt));
          assertEquals("delete low_priority quick ignore from T", SQLUtils.toMySqlString(stmt, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION));
      }
  }
  