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.sql.parser;
  
  import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
  import junit.framework.TestCase;
  import org.junit.Assert;
  
  public class SQLLexerTest2 extends TestCase {
      public void test_lexer() throws Exception {
          String sql = "SELECT * FROM T WHERE F1 = ? ORDER BY F2";
          Lexer lexer = new Lexer(sql);
          for (; ; ) {
              lexer.nextToken();
              Token tok = lexer.token();
  
              if (tok == Token.IDENTIFIER) {
                  System.out.println(tok.name() + "\t\t" + lexer.stringVal());
              } else if (tok == Token.LITERAL_INT) {
                  System.out.println(tok.name() + "\t\t" + lexer.numberString());
              } else {
                  System.out.println(tok.name() + "\t\t\t" + tok.name);
              }
  
              if (tok == Token.WHERE) {
                  System.out.println("where pos : " + lexer.pos());
              }
  
              if (tok == Token.EOF) {
                  break;
              }
          }
      }
  
      public void test_lexer2() throws Exception {
          String sql = "SELECT substr('''a''bc',0,3) FROM dual";
          Lexer lexer = new Lexer(sql);
          for (; ; ) {
              lexer.nextToken();
              Token tok = lexer.token();
  
              if (tok == Token.IDENTIFIER) {
                  System.out.println(tok.name() + "\t\t" + lexer.stringVal());
              } else if (tok == Token.LITERAL_INT) {
                  System.out.println(tok.name() + "\t\t" + lexer.numberString());
              } else if (tok == Token.LITERAL_CHARS) {
                  System.out.println(tok.name() + "\t\t" + lexer.stringVal());
              } else {
                  System.out.println(tok.name() + "\t\t\t" + tok.name);
              }
  
              if (tok == Token.EOF) {
                  break;
              }
          }
      }
  
      public void test_lexer_error_info() {
          String line1 = "SELECT *";
          String line2 = "FORM a";
          String sql = line1 + "\n" + line2;
          MySqlStatementParser parser = new MySqlStatementParser(sql);
          Exception exception = null;
          try {
              parser.parseStatementList();
          } catch (Exception e) {
              exception = e;
          }
          assert exception != null;
          Assert.assertEquals("not supported.pos 13, line 2, column 2, token IDENTIFIER FORM", exception.getMessage());
      }
  
      public void test_lexer_computePos() {
          String sql = "\nSELECT;";
          Lexer lexer = new Lexer(sql);
          lexer.nextToken();
          lexer.nextToken();
          lexer.computeRowAndColumn();
          int posLine = lexer.getPosLine();
          int column = lexer.getPosColumn();
          Assert.assertEquals(posLine, 2);
          Assert.assertEquals(column, 7);
      }
  }
  