add test case to create/drop same name db multiple times

tests/system-test/0-others/test_create_same_name_db.py

@@ -0,0 +1,38 @@
+import time
+import os
+import platform
+import taos
+import threading
+from util.log import *
+from util.sql import *
+from util.cases import *
+from util.dnodes import *
+from util.common import *
+
+
+class TDTestCase:
+    """This test case is used to veirfy TD-25762
+    """
+    def init(self, conn, logSql, replicaVar=1):
+        self.replicaVar = int(replicaVar)
+        tdLog.debug(f"start to excute {__file__}")
+        tdSql.init(conn.cursor())
+        self.db_name = "db"
+
+    def run(self):
+        try:
+            # create same name database multiple times
+            for i in range(100):
+                tdLog.debug(f"round {str(i+1)} create database {self.db_name}")
+                tdSql.execute(f"create database {self.db_name}")
+                tdLog.debug(f"round {str(i+1)} drop database {self.db_name}")
+                tdSql.execute(f"drop database {self.db_name}")
+        except Exception as ex:
+            tdLog.exit(str(ex))
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success(f"{__file__} successfully executed")
+
+tdCases.addLinux(__file__, TDTestCase())
+tdCases.addWindows(__file__, TDTestCase())