content: package com.alibaba.druid.bvt.sql;
  
  import com.alibaba.druid.sql.SQLUtils;
  import com.alibaba.druid.sql.ast.SQLExpr;
  import com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr;
  import com.alibaba.druid.sql.parser.SQLExprParser;
  import junit.framework.TestCase;
  
  import java.util.List;
  
  /**
   * Created by wenshao on 04/06/2017.
   */
  public class SplitTest2 extends TestCase {
      public void test_0() throws Exception {
          int count = 10;
          String sql = "";
  
          for (int i = 0; i < count; ++i) {
              if (sql.length() != 0) {
                  sql += " + ";
              }
  
              sql += Integer.toString(i);
          }
  //        sql = "(1 + 2) + (3 + 4)";
          SQLBinaryOpExpr expr = (SQLBinaryOpExpr) new SQLExprParser(sql).expr();
  
          List<SQLExpr> items = SQLBinaryOpExpr.split(expr);
  
          System.out.println(sql);
          System.out.println(items);
  
          assertEquals(count, items.size());
          for (int i = 0; i < count; ++i) {
              SQLExpr item = items.get(i);
              assertEquals(Integer.toString(i), SQLUtils.toSQLString(item));
          }
      }
  }
  