add randome insert many records with NULL then commit.

tests/pytest/fulltest.sh

@@ -13,6 +13,7 @@ python3 ./test.py -f insert/nchar.py
 python3 ./test.py -f insert/nchar-boundary.py
 python3 ./test.py -f insert/nchar-unicode.py
 python3 ./test.py -f insert/multi.py
+python3 ./test.py -f insert/randomNullCommit.py
 
 python3 ./test.py -f table/column_name.py
 python3 ./test.py -f table/column_num.py

tests/pytest/insert/randomNullCommit.py

@@ -0,0 +1,64 @@
+###################################################################
+#           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 random
+
+from util.log import *
+from util.cases import *
+from util.sql import *
+from util.dnodes import *
+
+
+class TDTestCase:
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+
+    def run(self):
+        tdSql.prepare()
+
+        tdLog.info("=============== step1")
+        tdSql.execute('create table tb (ts timestamp, speed int, temp float, note binary(5), flag bool)')
+
+        numOfRecords = 0
+        randomList = [10, 50, 100, 500, 1000, 5000]
+        for i in range(0, 10):
+            num = random.choice(randomList)
+            tdLog.info("will insert %d records" % num)
+            for x in range(0, num):
+                tdLog.info(
+                    'insert into tb values (now + %da, NULL, NULL, NULL, TRUE)' % x)
+                tdSql.execute(
+                    'insert into tb values (now + %da, NULL, NULL, NULL, TRUE)' % x)
+
+            numOfRecords = numOfRecords + num
+
+            tdSql.query("select * from tb")
+            tdSql.checkRows(numOfRecords)
+            tdSql.checkData(numOfRecords-num, 1, None)
+            tdSql.checkData(numOfRecords-1, 2, None)
+
+            tdLog.info("stop dnode to commit data to disk")
+            tdDnodes.stop(1)
+            tdDnodes.start(1)
+            tdLog.sleep(5)
+
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())