[TD-2366]<test> add test case for is null

tests/pytest/fulltest.sh

@@ -172,6 +172,8 @@ python3 ./test.py -f query/sliding.py
 python3 ./test.py -f query/unionAllTest.py
 python3 ./test.py -f query/bug2281.py
 python3 ./test.py -f query/bug2119.py
+python3 ./test.py -f query/isNullTest.py
+
 #stream
 python3 ./test.py -f stream/metric_1.py
 python3 ./test.py -f stream/new.py

tests/pytest/functions/function_twa_test2.py

@@ -75,7 +75,46 @@ class TDTestCase:
         tdSql.checkData(18, 1, 9.75000)
         tdSql.checkData(19, 1, 10)
 
+        tdSql.execute("create table t2(ts timestamp, c int)")
+        tdSql.execute("insert into t2 values(%d, 1)" % (self.ts + 3000))
+        tdSql.query("select twa(c) from t2 where ts >= '2018-09-17 09:00:00.000' and ts <= '2018-09-17 09:01:30.000' ")
+        tdSql.checkRows(1)
+        tdSql.checkData(0, 0, 1)
+
+        tdSql.query("select twa(c) from t2 where ts >= '2018-09-17 09:00:00.000' and ts <= '2018-09-17 09:01:30.000' interval(2s) ")
+        tdSql.checkRows(1)
+        tdSql.checkData(0, 1, 1)
+
+        tdSql.query("select twa(c) from t2 where ts >= '2018-09-17 09:00:00.000' and ts <= '2018-09-17 09:01:30.000' interval(2s) sliding(1s) ")
+        tdSql.checkRows(2)
+        tdSql.checkData(0, 1, 1)
+        tdSql.checkData(1, 1, 1)
+
+        tdSql.query("select twa(c) from t2 where ts >= '2018-09-17 09:00:04.000' and ts <= '2018-09-17 09:01:30.000' ")
+        tdSql.checkRows(0)
+
+        tdSql.query("select twa(c) from t2 where ts >= '2018-09-17 08:00:00.000' and ts <= '2018-09-17 09:00:00.000' ")
+        tdSql.checkRows(0)
+
+        tdSql.execute("create table t3(ts timestamp, c int)")
+        tdSql.execute("insert into t3 values(%d, 1)" % (self.ts))
+        tdSql.execute("insert into t3 values(%d, -2)" % (self.ts + 3000))
+
+        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.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)
+        tdSql.checkData(0, 1, 0.5005)
+        tdSql.checkData(1, 1, -2)
 
+        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(2s) sliding(1s)")
+        tdSql.checkRows(4)
+        tdSql.checkData(0, 1, 0.5005)
+        tdSql.checkData(1, 1, 0.0005)
+        tdSql.checkData(2, 1, -1.5)
+        tdSql.checkData(3, 1, -2)
 
     def stop(self):
         tdSql.close()

tests/pytest/pytest_1.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 query/isNullTest.py
 
 #table
 python3 ./test.py -f table/alter_wal0.py

tests/pytest/query/isNullTest.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 tdLog
+from util.cases import tdCases
+from util.sql import tdSql
+
+
+class TDTestCase:
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+
+        self.ts = 1537146000000
+
+    def run(self):
+        tdSql.prepare()
+
+        print("==============step1")
+        tdSql.execute("create table st(ts timestamp, c1 int, c2 binary(20), c3 nchar(20)) tags(t1 int, t2 binary(20), t3 nchar(20))")
+        tdSql.execute("create table t1 using st tags(1, 'binary1', 'nchar1')")
+        tdSql.execute("insert into t2(ts, c2) using st(t2) tags('') values(%d, '')" % (self.ts + 10))
+        tdSql.execute("insert into t3(ts, c2) using st(t3) tags('') values(%d, '')" % (self.ts + 10))
+
+        for i in range(10):
+            tdSql.execute("insert into t1 values(%d, %d, 'binary%d', 'nchar%d')" % (self.ts + i, i, i, i))
+            tdSql.execute("insert into t2 values(%d, %d, 'binary%d', 'nchar%d')" % (self.ts + i, i, i, i))
+            tdSql.execute("insert into t3 values(%d, %d, 'binary%d', 'nchar%d')" % (self.ts + i, i, i, i))
+
+        tdSql.execute("insert into t1(ts, c2) values(%d, '')" % (self.ts + 10))
+        tdSql.execute("insert into t1(ts, c3) values(%d, '')" % (self.ts + 11))        
+        tdSql.execute("insert into t2(ts, c3) values(%d, '')" % (self.ts + 11))        
+        tdSql.execute("insert into t3(ts, c3) values(%d, '')" % (self.ts + 11))
+
+        tdSql.query("select count(*) from st")
+        tdSql.checkData(0, 0, 36)
+
+        tdSql.query("select count(*) from st where t1 is null")
+        tdSql.checkData(0, 0, 24)
+
+        tdSql.query("select count(*) from st where t1 is not null")
+        tdSql.checkData(0, 0, 12)
+
+        tdSql.query("select count(*) from st where t2 is null")
+        tdSql.checkData(0, 0, 12)
+
+        tdSql.query("select count(*) from st where t2 is not null")
+        tdSql.checkData(0, 0, 24)
+
+        tdSql.error("select count(*) from st where t2 <> null")
+        tdSql.error("select count(*) from st where t2 = null")
+
+        tdSql.query("select count(*) from st where t2 = '' ")
+        tdSql.checkData(0, 0, 12)
+
+        tdSql.query("select count(*) from st where t2 <> '' ")
+        tdSql.checkData(0, 0, 24)
+
+        tdSql.query("select count(*) from st where t3 is null")
+        tdSql.checkData(0, 0, 12)
+
+        tdSql.query("select count(*) from st where t3 is not null")
+        tdSql.checkData(0, 0, 24)
+
+        tdSql.error("select count(*) from st where t3 <> null")
+        tdSql.error("select count(*) from st where t3 = null")
+
+        tdSql.query("select count(*) from st where t3 = '' ")
+        tdSql.checkData(0, 0, 12)
+
+        tdSql.query("select count(*) from st where t3 <> '' ")
+        tdSql.checkData(0, 0, 24)
+
+        tdSql.query("select count(*) from st where c1 is not null")
+        tdSql.checkData(0, 0, 30)
+
+        tdSql.query("select count(*) from st where c1 is null")
+        tdSql.checkData(0, 0, 6)
+
+        tdSql.query("select count(*) from st where c2 is not null")
+        tdSql.checkData(0, 0, 33)
+
+        tdSql.query("select count(*) from st where c2 is null")
+        tdSql.checkData(0, 0, 3)
+
+        tdSql.error("select count(*) from st where c2 <> null")
+        tdSql.error("select count(*) from st where c2 = null")
+
+        tdSql.query("select count(*) from st where c2 = '' ")
+        tdSql.checkData(0, 0, 3)
+
+        tdSql.query("select count(*) from st where c2 <> '' ")
+        tdSql.checkData(0, 0, 30)
+
+        tdSql.query("select count(*) from st where c3 is not null")
+        tdSql.checkData(0, 0, 33)
+
+        tdSql.query("select count(*) from st where c3 is null")
+        tdSql.checkData(0, 0, 3)
+
+        tdSql.error("select count(*) from st where c3 <> null")
+        tdSql.error("select count(*) from st where c3 = null")
+
+        tdSql.query("select count(*) from st where c3 = '' ")
+        tdSql.checkData(0, 0, 3)
+
+        tdSql.query("select count(*) from st where c3 <> '' ")
+        tdSql.checkData(0, 0, 30)
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())