[TD-10700]<enhance>: add test case for line protocol inserting

keywords/special character

tests/pytest/insert/line_insert.py

@@ -85,6 +85,46 @@ class TDTestCase:
 
         tdSql.query('select tbname, * from childtable')
         tdSql.checkRows(1)
+
+        ###Special Character and keyss
+        self._conn.schemaless_insert([
+                                "1234,id=3456,abc=4i64,def=3i64 123=3i64,int=2i64,bool=false,into=5f64,column=7u64,!@#$.%^&*()=false 1626006933641",
+                                "int,id=and,123=4i64,smallint=5f64,double=5f64,of=3i64,key=L\"passitagin_stf\",!@#$.%^&*()=false abc=false 1626006933654",
+                                "double,id=for,123=4i64,smallint=5f64,double=5f64,of=3i64,key=L\"passitagin_stf\",!@#$.%^&*()=false abc=false 1626006933664",
+                                "from,id=!@#$.%^,123=4i64,smallint=5f64,double=5f64,of=3i64,key=L\"passitagin_stf\",!@#$.%^&*()=false abc=false 1626006933674",
+                                "!@#$.%^&*(),id=none,123=4i64,smallint=5f64,double=5f64,of=3i64,key=L\"passitagin_stf\",!@#$.%^&*()=false abc=false 1626006933684",
+                                ], TDSmlProtocolType.LINE.value, TDSmlTimestampType.MILLI_SECOND.value)
+        tdSql.execute('reset query cache')
+
+        tdSql.query('describe `1234`')
+        tdSql.checkRows(9)
+
+        tdSql.query('describe `int`')
+        tdSql.checkRows(8)
+
+        tdSql.query('describe `double`')
+        tdSql.checkRows(8)
+
+        tdSql.query('describe `from`')
+        tdSql.checkRows(8)
+
+        tdSql.query('describe `!@#$.%^&*()`')
+        tdSql.checkRows(8)
+
+        tdSql.query('select * from `3456`')
+        tdSql.checkRows(1)
+
+        tdSql.query('select * from `and`')
+        tdSql.checkRows(1)
+
+        tdSql.query('select * from `for`')
+        tdSql.checkRows(1)
+
+        tdSql.query('select * from `!@#$.%^`')
+        tdSql.checkRows(1)
+
+        tdSql.query('select * from `none`')
+        tdSql.checkRows(1)
     def stop(self):
         tdSql.close()
         tdLog.success("%s successfully executed" % __file__)