add test case to test insert then import scenario.

tests/pytest/import_merge/importInsertThenImport.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 taos
+from util.log import *
+from util.cases import *
+from util.sql import *
+from util.dnodes import *
+
+
+class TDTestCase:
+    def init(self, conn):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor())
+
+    def run(self):
+        self.ntables = 1
+        self.startTime = 1520000010000
+
+        tdSql.prepare()
+
+        tdLog.info("================= step1")
+        tdLog.info("create 1 table")
+        tdSql.execute('create table tb1 (ts timestamp, i int)')
+
+        tdLog.info("================= step2")
+        tdLog.info("insert 100 sequential data")
+        startTime = self.startTime
+        for rid in range(1, 101):
+            tdSql.execute(
+                'insert into tb1 values(%ld, %d)' %
+                (startTime + rid, rid))
+
+        tdLog.info("================= step3")
+        tdSql.query('select * from tb1')
+        tdSql.checkRows(100)
+
+        tdLog.info("================= step4")
+        tdLog.info("import 100 sequential data")
+        startTime = self.startTime
+        for rid in range(1, 101):
+            tdSql.execute(
+                'import into tb1 values(%ld, %d)' %
+                (startTime + rid, 100 + rid))
+
+        tdSql.query('select * from tb1')
+        tdSql.checkRows(100)
+        tdSql.checkData(0, 1, 1)
+
+        tdLog.info("================= step5")
+        tdDnodes.forcestop(1)
+        tdDnodes.start(1)
+        tdLog.sleep(10)
+
+        tdLog.info("================= step6")
+        tdLog.info("import 100 sequential data again")
+        startTime = self.startTime
+        for rid in range(1, 101):
+            tdSql.execute(
+                'import into tb1 values(%ld, %d)' %
+                (startTime + rid, 100 + rid))
+
+        tdLog.info("================= step7")
+        tdSql.query('select * from tb1')
+        tdSql.checkRows(100)
+        tdSql.checkData(0, 1, 1)
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())