[TD-5616]<test>: finish like wildcard max_length test

add getVariable() to util/sql.py

add 4 testcases to query/queryWildcardLength.py

leave a uncorrelated bug ---> TD-5918

tests/pytest/query/queryWildcardLength.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 copy import deepcopy
+import string
+import random
+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)
+
+    def cleanTb(self):
+        query_sql = "show stables"
+        res_row_list = tdSql.query(query_sql, True)
+        stb_list = map(lambda x: x[0], res_row_list)
+        for stb in stb_list:
+            tdSql.execute(f'drop table if exists {stb}')
+
+        query_sql = "show tables"
+        res_row_list = tdSql.query(query_sql, True)
+        tb_list = map(lambda x: x[0], res_row_list)
+        for tb in tb_list:
+            tdSql.execute(f'drop table if exists {tb}')
+
+    def getLongWildcardStr(self, len=None):
+        """
+            generate long wildcard str
+        """    
+        maxWildCardsLength = int(tdSql.getVariable('maxWildCardsLength')[0])
+        if len:
+            chars = ''.join(random.choice(string.ascii_letters.lower()) for i in range(len))
+        else:
+            chars = ''.join(random.choice(string.ascii_letters.lower()) for i in range(maxWildCardsLength+1))
+        return chars
+    
+    def genTableName(self):
+        '''
+            generate table name
+            hp_name--->'%str'
+            lp_name--->'str%'
+            ul_name--->'st_r'
+        '''
+        table_name = self.getLongWildcardStr()
+        table_name_list = list(table_name)
+        table_name_list.pop(-1)
+
+        if len(table_name_list) > 1:
+            lp_name = deepcopy(table_name_list)
+            lp_name[-1] = '%'
+            lp_name = ''.join(lp_name)
+
+            ul_name = list(lp_name)
+            ul_name[int(len(ul_name)/2)] = '_'
+            ul_name = ''.join(ul_name)
+
+            table_name_list = list(table_name)
+            hp_name = deepcopy(table_name_list)
+            hp_name.pop(1)
+            hp_name[0] = '%'
+            hp_name = ''.join(hp_name)
+        else:
+            hp_name = '%'
+            lp_name = '%'
+            ul_name = '_'
+        return table_name, hp_name, lp_name, ul_name
+
+    def checkRegularTableWildcardLength(self):
+        '''
+            check regular table wildcard length with % and _
+        '''
+        self.cleanTb()
+        table_name, hp_name, lp_name, ul_name = self.genTableName()
+        tdSql.execute(f"CREATE TABLE {table_name} (ts timestamp, a1 int)")
+        sql_list = [f'show tables like "{hp_name}"', f'show tables like "{lp_name}"', f'show tables like "{ul_name}"']
+        for sql in sql_list:
+            tdSql.query(sql)
+            if len(table_name) >= 1:
+                tdSql.checkRows(1)
+            else:
+                tdSql.error(sql)
+        
+        exceed_sql_list = [f'show tables like "%{hp_name}"', f'show tables like "{lp_name}%"', f'show tables like "{ul_name}%"']
+        for sql in exceed_sql_list:
+            tdSql.error(sql)
+
+    def checkSuperTableWildcardLength(self):
+        '''
+            check super table wildcard length with % and _
+        '''
+        self.cleanTb()
+        table_name, hp_name, lp_name, ul_name = self.genTableName()
+        tdSql.execute(f"CREATE TABLE {table_name} (ts timestamp, c1 int) tags (t1 int)")
+        sql_list = [f'show stables like "{hp_name}"', f'show stables like "{lp_name}"', f'show stables like "{ul_name}"']
+        for sql in sql_list:
+            tdSql.query(sql)
+            if len(table_name) >= 1:
+                tdSql.checkRows(1)
+            else:
+                tdSql.error(sql)
+
+        exceed_sql_list = [f'show stables like "%{hp_name}"', f'show stables like "{lp_name}%"', f'show stables like "{ul_name}%"']
+        for sql in exceed_sql_list:
+            tdSql.error(sql)
+    
+    def checkRegularWildcardSelectLength(self):
+        '''
+            check regular table wildcard select length with % and _
+        '''
+        self.cleanTb()
+        table_name, hp_name, lp_name, ul_name = self.genTableName()
+        tdSql.execute(f"CREATE TABLE {table_name} (ts timestamp, bi1 binary(200), nc1 nchar(200))")
+        tdSql.execute(f'insert into {table_name} values (now, "{table_name}", "{table_name}")')
+        sql_list = [f'select * from {table_name} where bi1 like "{hp_name}"',
+                    f'select * from {table_name} where bi1 like "{lp_name}"',
+                    f'select * from {table_name} where bi1 like "{ul_name}"',
+                    f'select * from {table_name} where nc1 like "{hp_name}"',
+                    f'select * from {table_name} where nc1 like "{lp_name}"',
+                    f'select * from {table_name} where nc1 like "{ul_name}"']
+        for sql in sql_list:
+            tdSql.query(sql)
+            if len(table_name) >= 1:
+                tdSql.checkRows(1)
+            else:
+                tdSql.error(sql)
+        
+        exceed_sql_list = [f'select * from {table_name} where bi1 like "%{hp_name}"',
+                            f'select * from {table_name} where bi1 like "{lp_name}%"',
+                            f'select * from {table_name} where bi1 like "{ul_name}%"',
+                            f'select * from {table_name} where nc1 like "%{hp_name}"',
+                            f'select * from {table_name} where nc1 like "{lp_name}%"',
+                            f'select * from {table_name} where nc1 like "{ul_name}%"']
+        for sql in exceed_sql_list:
+            tdSql.error(sql)
+        
+    def checkStbWildcardSelectLength(self):
+        '''
+            check stb wildcard select length with % and _
+        '''
+        self.cleanTb()
+        table_name, hp_name, lp_name, ul_name = self.genTableName()
+
+        tdSql.execute(f'CREATE TABLE {table_name} (ts timestamp, bi1 binary(200), nc1 nchar(200)) tags (si1 binary(200), sc1 nchar(200))')
+        tdSql.execute(f'create table {table_name}_sub1 using {table_name} tags ("{table_name}", "{table_name}")')
+        tdSql.execute(f'insert into {table_name}_sub1 values (now, "{table_name}", "{table_name}");')
+
+        # TODO sc1 leave a bug ---> TD-5918
+        # sql_list = [f'select * from {table_name} where bi1 like "{hp_name}"',
+        #             f'select * from {table_name} where bi1 like "{lp_name}"',
+        #             f'select * from {table_name} where bi1 like "{ul_name}"',
+        #             f'select * from {table_name} where nc1 like "{hp_name}"',
+        #             f'select * from {table_name} where nc1 like "{lp_name}"',
+        #             f'select * from {table_name} where nc1 like "{ul_name}"',
+        #             f'select * from {table_name} where si1 like "{hp_name}"',
+        #             f'select * from {table_name} where si1 like "{lp_name}"',
+        #             f'select * from {table_name} where si1 like "{ul_name}"',
+        #             f'select * from {table_name} where sc1 like "{hp_name}"',
+        #             f'select * from {table_name} where sc1 like "{lp_name}"',
+        #             f'select * from {table_name} where sc1 like "{ul_name}"']
+        sql_list = [f'select * from {table_name} where bi1 like "{hp_name}"',
+                    f'select * from {table_name} where bi1 like "{lp_name}"',
+                    f'select * from {table_name} where bi1 like "{ul_name}"',
+                    f'select * from {table_name} where nc1 like "{hp_name}"',
+                    f'select * from {table_name} where nc1 like "{lp_name}"',
+                    f'select * from {table_name} where nc1 like "{ul_name}"',
+                    f'select * from {table_name} where si1 like "{hp_name}"',
+                    f'select * from {table_name} where si1 like "{lp_name}"',
+                    f'select * from {table_name} where si1 like "{ul_name}"']
+        for sql in sql_list:
+            tdSql.query(sql)
+            if len(table_name) >= 1:
+                tdSql.checkRows(1)
+            else:
+                tdSql.error(sql)
+        exceed_sql_list = [f'select * from {table_name} where bi1 like "%{hp_name}"',
+                            f'select * from {table_name} where bi1 like "{lp_name}%"',
+                            f'select * from {table_name} where bi1 like "{ul_name}%"',
+                            f'select * from {table_name} where nc1 like "%{hp_name}"',
+                            f'select * from {table_name} where nc1 like "{lp_name}%"',
+                            f'select * from {table_name} where nc1 like "{ul_name}%"',
+                            f'select * from {table_name} where si1 like "%{hp_name}"',
+                            f'select * from {table_name} where si1 like "{lp_name}%"',
+                            f'select * from {table_name} where si1 like "{ul_name}%"',
+                            f'select * from {table_name} where sc1 like "%{hp_name}"',
+                            f'select * from {table_name} where sc1 like "{lp_name}%"',
+                            f'select * from {table_name} where sc1 like "{ul_name}%"']
+        for sql in exceed_sql_list:
+            tdSql.error(sql)
+
+    def run(self):
+        tdSql.prepare()
+        self.checkRegularTableWildcardLength()
+        self.checkSuperTableWildcardLength()
+        self.checkRegularWildcardSelectLength()
+        self.checkStbWildcardSelectLength()
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())
+

tests/pytest/util/sql.py

@@ -81,6 +81,22 @@ class TDSql:
             return self.queryResult
         return self.queryRows
 
+    def getVariable(self, search_attr):
+        '''
+            get variable of search_attr access "show variables"
+        '''
+        try:
+            sql = 'show variables'
+            param_list = self.query(sql, row_tag=True)
+            for param in param_list:
+                if param[0] == search_attr:
+                    return param[1], param_list
+        except Exception as e:
+            caller = inspect.getframeinfo(inspect.stack()[1][0])
+            args = (caller.filename, caller.lineno, sql, repr(e))
+            tdLog.notice("%s(%d) failed: sql:%s, %s" % args)
+            raise Exception(repr(e))
+
     def getColNameList(self, sql, col_tag=None):
         self.sql = sql
         try: