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 com.alibaba.druid.util.JdbcConstants;
  import junit.framework.TestCase;
  
  import java.util.List;
  
  public class ControlFlowFunctionsTest extends TestCase {
      public void test_0() throws Exception {
          String sql = "SELECT CASE 1 WHEN 1 THEN 'one' WHEN 2 THEN 'two' ELSE 'more' END;";
  
          SQLStatementParser parser = new MySqlStatementParser(sql);
          List<SQLStatement> stmtList = parser.parseStatementList();
  
          String text = output(stmtList);
  
          assertEquals("SELECT CASE 1\n" +
                  "\t\tWHEN 1 THEN 'one'\n" +
                  "\t\tWHEN 2 THEN 'two'\n" +
                  "\t\tELSE 'more'\n" +
                  "\tEND;", text);
      }
  
      public void test_1() throws Exception {
          String sql = "SELECT IF(1>2,2,3);";
  
          SQLStatementParser parser = new MySqlStatementParser(sql);
          List<SQLStatement> stmtList = parser.parseStatementList();
  
          String text = output(stmtList);
  
          assertEquals("SELECT IF(1 > 2, 2, 3);", text);
      }
  
      public void test_2() throws Exception {
          String sql = "SELECT IF(1<2,'yes','no');";
  
          SQLStatementParser parser = new MySqlStatementParser(sql);
          List<SQLStatement> stmtList = parser.parseStatementList();
  
          String text = output(stmtList);
  
          assertEquals("SELECT IF(1 < 2, 'yes', 'no');", text);
      }
  
      public void test_3() throws Exception {
          String sql = "SELECT IF(STRCMP('test','test1'),'no','yes');";
  
          SQLStatementParser parser = new MySqlStatementParser(sql);
          List<SQLStatement> stmtList = parser.parseStatementList();
  
          String text = output(stmtList);
  
          assertEquals("SELECT IF(STRCMP('test', 'test1'), 'no', 'yes');", text);
      }
  
      public void test_4() throws Exception {
          String sql = "SELECT IFNULL(1,0);";
  
          SQLStatementParser parser = new MySqlStatementParser(sql);
          List<SQLStatement> stmtList = parser.parseStatementList();
  
          String text = output(stmtList);
  
          assertEquals("SELECT IFNULL(1, 0);", text);
      }
  
      public void test_5() throws Exception {
          String sql = "SELECT IFNULL(1/0,'yes');";
  
          SQLStatementParser parser = new MySqlStatementParser(sql);
          List<SQLStatement> stmtList = parser.parseStatementList();
  
          String text = output(stmtList);
  
          assertEquals("SELECT IFNULL(1 / 0, 'yes');", text);
      }
  
      private String output(List<SQLStatement> stmtList) {
          return SQLUtils.toSQLString(stmtList, JdbcConstants.MYSQL);
      }
  }
  