fix test failures

tests/pytest/functions/function_twa_test2.py

@@ -102,7 +102,7 @@ class TDTestCase:
 
         tdSql.query("select twa(c) from t3 where ts >= '2018-09-17 08:59:00.000' and ts <= '2018-09-17 09:01:30.000'")
         tdSql.checkRows(1)
-        tdSql.checkData(-0.5)
+        tdSql.checkData(0, 0, -0.5)
 
         tdSql.query("select twa(c) from t3 where ts >= '2018-09-17 08:59:00.000' and ts <= '2018-09-17 09:01:30.000' interval(1s)")
         tdSql.checkRows(2)

tests/pytest/query/queryWithTaosdKilled.py

@@ -0,0 +1,68 @@
+###################################################################
+#           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 os
+import taos
+from util.log import *
+from util.cases import *
+from util.sql import *
+from util.dnodes import *
+import numpy as np
+
+
+class TDTestCase:
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        self.conn = conn
+        tdSql.init(conn.cursor())
+
+        self.rowNum = 10
+        self.ts = 1537146000000
+
+    def createOldDir(self):        
+        path = tdDnodes.dnodes[1].getDnodeRootDir(1)
+        print(path)
+        tdLog.info("sudo mkdir -p %s/data/vnode/vnode2/wal/old" % path)
+        os.system("sudo mkdir -p %s/data/vnode/vnode2/wal/old" % path)       
+
+    def run(self):
+        # os.system("rm -rf %s/ " % tdDnodes.getDnodesRootDir())
+        tdSql.prepare()
+
+        tdSql.execute("create table st(ts timestamp, speed int)")
+        tdSql.execute("insert into st values(now, 1)")
+        tdSql.query("select count(*) from st")
+        tdSql.checkRows(1)
+
+        
+        self.createOldDir()
+        tdLog.sleep(10)
+
+        print("force kill taosd")
+        os.system("sudo kill -9 $(pgrep -x taosd)")
+        os.system("")
+        tdDnodes.start(1)
+
+        tdSql.init(self.conn.cursor())
+        tdSql.execute("use db")
+        tdSql.query("select count(*) from st")
+        tdSql.checkRows(1)
+        
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())