[TD-2279] <test> add test case

tests/pytest/fulltest.sh

@@ -19,6 +19,7 @@ python3 ./test.py -f insert/randomNullCommit.py
 python3 insert/retentionpolicy.py
 python3 ./test.py -f insert/alterTableAndInsert.py
 python3 ./test.py -f insert/insertIntoTwoTables.py
+python3 ./test.py -f insert/before_1970.py
 
 python3 ./test.py -f table/alter_wal0.py
 python3 ./test.py -f table/column_name.py
@@ -228,6 +229,7 @@ python3 ./test.py -f update/merge_commit_data2.py
 python3 ./test.py -f update/merge_commit_data2_update0.py
 python3 ./test.py -f update/merge_commit_last-0.py
 python3 ./test.py -f update/merge_commit_last.py
+python3 ./test.py -f update/bug_td2279.py
 
 # wal
 python3 ./test.py -f wal/addOldWalTest.py
\ No newline at end of file

tests/pytest/update/bug_td2279.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, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor())
+
+        self.ts = 1606700000000
+    
+    def restartTaosd(self):
+        tdDnodes.stop(1)
+        tdDnodes.startWithoutSleep(1)
+        tdSql.execute("use db")
+
+    def run(self):            
+        tdSql.prepare()
+
+        print("==============step1")        
+        tdSql.execute("create table t (ts timestamp, a int)")
+
+        for i in range(3276):
+            tdSql.execute("insert into t values(%d, 0)" % (self.ts + i))
+
+        newTs = 1606700010000
+        for i in range(3275):
+            tdSql.execute("insert into t values(%d, 0)" % (self.ts + i))
+        tdSql.execute("insert into t values(%d, 0)" % 1606700013280)
+        
+        self.restartTaosd()
+        
+        for i in range(1606700003275, 1606700006609):
+            tdSql.execute("insert into t values(%d, 0)" % i)
+        tdSql.execute("insert into t values(%d, 0)" % 1606700006612)
+        
+        self.restartTaosd()
+
+        tdSql.execute("insert into t values(%d, 0)" % 1606700006610)        
+        tdSql.query("select * from t")
+        tdSql.checkRows(6612)
+
+        tdDnodes.stop(1)
+        
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())