test: refine query cases

tests/system-test/2-query/stablity_1.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 -*-
+from util.cases import tdCases
+from .stablity import *
+
+class TDTestCase(TDTestCase):
+
+    def run(self):
+        tdSql.prepare()
+        
+        startTime = time.time() 
+
+        self.function_before_26()    
+        
+        self.dropandcreateDB_random("%s" %self.db_nest, 1)   
+               
+        # self.math_nest(['UNIQUE'])
+        # self.math_nest(['MODE']) 
+        # self.math_nest(['SAMPLE'])
+                
+        # self.math_nest(['ABS','SQRT'])     
+        # self.math_nest(['SIN','COS','TAN','ASIN','ACOS','ATAN'])        
+        # self.math_nest(['POW','LOG']) 
+        # self.math_nest(['FLOOR','CEIL','ROUND']) 
+        # self.math_nest(['MAVG'])  
+        # self.math_nest(['HYPERLOGLOG']) 
+        # self.math_nest(['TAIL']) 
+        # self.math_nest(['CSUM'])
+        # self.math_nest(['statecount','stateduration'])
+        # self.math_nest(['HISTOGRAM']) 
+        
+        self.str_nest(['LTRIM','RTRIM','LOWER','UPPER']) 
+        self.str_nest(['LENGTH','CHAR_LENGTH']) 
+        self.str_nest(['SUBSTR'])   
+        self.str_nest(['CONCAT']) 
+        self.str_nest(['CONCAT_WS']) 
+        self.time_nest(['CAST']) 
+        self.time_nest(['CAST_1'])
+        self.time_nest(['CAST_2'])
+        self.time_nest(['CAST_3'])
+        self.time_nest(['CAST_4'])
+        
+        self.time_nest(['NOW','TODAY']) 
+        self.time_nest(['TIMEZONE']) 
+        self.time_nest(['TIMETRUNCATE']) 
+        self.time_nest(['TO_ISO8601'])
+        self.time_nest(['TO_UNIXTIMESTAMP'])
+        self.time_nest(['ELAPSED'])
+        self.time_nest(['TIMEDIFF_1'])
+        self.time_nest(['TIMEDIFF_2'])       
+
+        endTime = time.time()
+        print("total time %ds" % (endTime - startTime))
+
+        
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())