[TD-1480]<test> Add test case for TSDB_MAX_ALLOWED_SQL_LEN

tests/pytest/insert/maxSqlLength.py

+###################################################################
+#           Copyright (c) 2016 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+import sys
+import datetime
+from util.log import *
+from util.cases import *
+from util.sql import *
+from util.dnodes import *
+import string
+import random
+
+
+class TDTestCase:
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+
+        self.ts = 1537146000000
+
+    def get_random_string(self, length):
+        letters = string.ascii_lowercase
+        result_str = ''.join(random.choice(letters) for i in range(length))
+        return result_str
+
+    def run(self):
+        tdSql.prepare()
+
+        tdSql.execute("create table tb(ts timestamp, name1 binary(1000), name2 binary(1000), name3 binary(1000))")
+        
+        sql = "insert into tb values"
+        for i in range(21):
+            value = self.get_random_string(1000)
+            sql += "(%d, '%s', '%s', '%s')" % (self.ts + i, value, value, value)        
+        tdSql.execute(sql)
+
+        self.ts += 21
+        for i in range(22):
+            value = self.get_random_string(1000)
+            sql += "(%d, '%s', '%s', '%s')" % (self.ts + i, value, value, value)        
+        tdSql.error(sql)
+
+        tdSql.query("select * from tb")
+        tdSql.checkRows(21)
+        
+        tdDnodes.stop(1)             
+        tdDnodes.setTestCluster(False)
+        tdDnodes.setValgrind(False)
+        tdDnodes.addSimExtraCfg("maxSQLLength", "1048576")        
+        tdDnodes.deploy(1)                  
+        tdDnodes.cfg(1, "maxSQLLength", "1048576")
+        tdLog.sleep(20)
+        tdDnodes.start(1)
+        
+
+        tdSql.prepare()    
+        tdSql.execute("create table tb(ts timestamp, name1 binary(1000), name2 binary(1000), name3 binary(1000))")
+        
+        sql = "insert into tb values"
+        for i in range(22):
+            value = self.get_random_string(1000)
+            sql += "(%d, '%s', '%s', '%s')" % (self.ts + i, value, value, value)        
+        tdSql.execute(sql)
+        
+        tdSql.query("select * from tb")
+        tdSql.checkRows(43)
+
+        # self.ts += 43
+        # for i in range(330):
+        #     value = self.get_random_string(1000)
+        #     sql += "(%d, '%s', '%s', '%s')" % (self.ts + i, value, value, value)        
+        # tdSql.execute(sql)
+
+        # tdSql.query("select * from tb")
+        # tdSql.checkRows(379)
+                
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())