diff --git a/tests/python_client/base/client_base.py b/tests/python_client/base/client_base.py
index 0ae50e9aa2..7aeec82fe7 100644
--- a/tests/python_client/base/client_base.py
+++ b/tests/python_client/base/client_base.py
@@ -65,12 +65,24 @@ class Base:
         self._teardown_objects()
 
     def _teardown_objects(self):
+        # Prioritize uri and token for connection
+        if cf.param_info.param_uri:
+            uri = cf.param_info.param_uri
+        else:
+            uri = "http://" + cf.param_info.param_host + ":" + str(cf.param_info.param_port)
+
+        if cf.param_info.param_token:
+            token = cf.param_info.param_token
+        else:
+            token = f"{cf.param_info.param_user}:{cf.param_info.param_password}" if cf.param_info.param_user and cf.param_info.param_password else None
+
         try:
             """ Drop collection before disconnect """
             if not self.connection_wrap.has_connection(alias=DefaultConfig.DEFAULT_USING)[0]:
-                self.connection_wrap.connect(alias=DefaultConfig.DEFAULT_USING, host=cf.param_info.param_host,
-                                             port=cf.param_info.param_port, user=ct.default_user,
-                                             password=ct.default_password)
+                if token:
+                    self.connection_wrap.connect(alias=DefaultConfig.DEFAULT_USING, uri=uri, token=token)
+                else:
+                    self.connection_wrap.connect(alias=DefaultConfig.DEFAULT_USING, uri=uri)
 
             if self.collection_wrap.collection is not None:
                 if self.collection_wrap.collection.name.startswith("alias"):
@@ -106,9 +118,10 @@ class Base:
         try:
             """ Drop roles before disconnect """
             if not self.connection_wrap.has_connection(alias=DefaultConfig.DEFAULT_USING)[0]:
-                self.connection_wrap.connect(alias=DefaultConfig.DEFAULT_USING, host=cf.param_info.param_host,
-                                             port=cf.param_info.param_port, user=ct.default_user,
-                                             password=ct.default_password)
+                if token:
+                    self.connection_wrap.connect(alias=DefaultConfig.DEFAULT_USING, uri=uri, token=token)
+                else:
+                    self.connection_wrap.connect(alias=DefaultConfig.DEFAULT_USING, uri=uri)
 
             role_list = self.utility_wrap.list_roles(False)[0]
             for role in role_list.groups:
@@ -145,30 +158,32 @@ class TestcaseBase(Base):
         if self.skip_connection:
             return None
 
-        if enable_milvus_client_api:
-            if cf.param_info.param_uri:
-                uri = cf.param_info.param_uri
-            else:
-                uri = "http://" + cf.param_info.param_host + ":" + str(cf.param_info.param_port)
-            self.connection_wrap.connect(alias=DefaultConfig.DEFAULT_USING,uri=uri,token=cf.param_info.param_token)
-            res, is_succ = self.connection_wrap.MilvusClient(uri=uri,
-                                                             token=cf.param_info.param_token)
-            self.client = MilvusClient(uri=uri, token=cf.param_info.param_token)
+        # Prioritize uri and token for connection
+        if cf.param_info.param_uri:
+            uri = cf.param_info.param_uri
         else:
-            if cf.param_info.param_user and cf.param_info.param_password:
+            uri = "http://" + cf.param_info.param_host + ":" + str(cf.param_info.param_port)
+
+        if cf.param_info.param_token:
+            token = cf.param_info.param_token
+        else:
+            token = f"{cf.param_info.param_user}:{cf.param_info.param_password}" if cf.param_info.param_user and cf.param_info.param_password else None
+
+        if enable_milvus_client_api:
+            self.connection_wrap.connect(alias=DefaultConfig.DEFAULT_USING, uri=uri, token=token)
+            res, is_succ = self.connection_wrap.MilvusClient(uri=uri, token=token)
+            self.client = MilvusClient(uri=uri, token=token)
+        else:
+            if token:
                 res, is_succ = self.connection_wrap.connect(alias=DefaultConfig.DEFAULT_USING,
-                                                            host=cf.param_info.param_host,
-                                                            port=cf.param_info.param_port,
-                                                            user=cf.param_info.param_user,
-                                                            password=cf.param_info.param_password,
+                                                            uri=uri,
+                                                            token=token,
                                                             secure=cf.param_info.param_secure)
             else:
                 res, is_succ = self.connection_wrap.connect(alias=DefaultConfig.DEFAULT_USING,
-                                                            host=cf.param_info.param_host,
-                                                            port=cf.param_info.param_port)
+                                                            uri=uri)
 
-            uri = "http://" + cf.param_info.param_host + ":" + str(cf.param_info.param_port)
-            self.client = MilvusClient(uri=uri, token=cf.param_info.param_token)
+            self.client = MilvusClient(uri=uri, token=token)
         server_version = utility.get_server_version()
         log.info(f"server version: {server_version}")
         return res
diff --git a/tests/python_client/chaos/checker.py b/tests/python_client/chaos/checker.py
index 3aa1bda5d2..712ab23851 100644
--- a/tests/python_client/chaos/checker.py
+++ b/tests/python_client/chaos/checker.py
@@ -355,7 +355,7 @@ class Checker:
         self.ms = MilvusSys()
         self.bucket_name = cf.param_info.param_bucket_name
 
-        # Initialize MilvusClient
+        # Initialize MilvusClient - prioritize uri and token
         if cf.param_info.param_uri:
             uri = cf.param_info.param_uri
         else:
@@ -371,10 +371,8 @@ class Checker:
         self.alias = cf.gen_unique_str("checker_alias_")
         connections.connect(
             alias=self.alias,
-            host=cf.param_info.param_host,
-            port=str(cf.param_info.param_port),
-            user=cf.param_info.param_user,
-            password=cf.param_info.param_password
+            uri=uri,
+            token=token
         )
         c_name = collection_name if collection_name is not None else cf.gen_unique_str(
             'Checker_')
@@ -905,7 +903,7 @@ class SearchChecker(Checker):
                 data=self.data,
                 anns_field=self.anns_field_name,
                 search_params=self.search_param,
-                limit=1,
+                limit=5,
                 partition_names=self.p_names,
                 timeout=search_timeout
             )
@@ -963,7 +961,7 @@ class TensorSearchChecker(Checker):
                 data=self.data,
                 anns_field=self.anns_field_name,
                 search_params=self.search_param,
-                limit=1,
+                limit=5,
                 partition_names=self.p_names,
                 timeout=search_timeout
             )
@@ -1019,7 +1017,7 @@ class FullTextSearchChecker(Checker):
                 data=cf.gen_vectors(5, self.dim, vector_data_type="TEXT_SPARSE_VECTOR"),
                 anns_field=bm25_anns_field,
                 search_params=constants.DEFAULT_BM25_SEARCH_PARAM,
-                limit=1,
+                limit=5,
                 partition_names=self.p_names,
                 timeout=search_timeout
             )
@@ -1863,7 +1861,7 @@ class QueryChecker(Checker):
     @trace()
     def query(self):
         try:
-            res = self.milvus_client.query(collection_name=self.c_name, filter=self.term_expr, timeout=query_timeout)
+            res = self.milvus_client.query(collection_name=self.c_name, filter=self.term_expr, limit=5, timeout=query_timeout)
             return res, True
         except Exception as e:
             log.info(f"query error: {e}")
@@ -1898,7 +1896,7 @@ class TextMatchChecker(Checker):
     @trace()
     def text_match(self):
         try:
-            res = self.milvus_client.query(collection_name=self.c_name, filter=self.term_expr, timeout=query_timeout)
+            res = self.milvus_client.query(collection_name=self.c_name, filter=self.term_expr, limit=5, timeout=query_timeout)
             return res, True
         except Exception as e:
             log.info(f"text_match error: {e}")
@@ -1938,7 +1936,7 @@ class PhraseMatchChecker(Checker):
     @trace()
     def phrase_match(self):
         try:
-            res = self.milvus_client.query(collection_name=self.c_name, filter=self.term_expr, timeout=query_timeout)
+            res = self.milvus_client.query(collection_name=self.c_name, filter=self.term_expr, limit=5, timeout=query_timeout)
             return res, True
         except Exception as e:
             log.info(f"phrase_match error: {e}")
@@ -1991,7 +1989,7 @@ class JsonQueryChecker(Checker):
     @trace()
     def json_query(self):
         try:
-            res = self.milvus_client.query(collection_name=self.c_name, filter=self.term_expr, timeout=query_timeout)
+            res = self.milvus_client.query(collection_name=self.c_name, filter=self.term_expr, limit=5, timeout=query_timeout)
             return res, True
         except Exception as e:
             log.info(f"json_query error: {e}")
@@ -2030,7 +2028,7 @@ class GeoQueryChecker(Checker):
     @trace()
     def geo_query(self):
         try:
-            res = self.milvus_client.query(collection_name=self.c_name, filter=self.term_expr, timeout=query_timeout)
+            res = self.milvus_client.query(collection_name=self.c_name, filter=self.term_expr, limit=5, timeout=query_timeout)
             return res, True
         except Exception as e:
             log.info(f"geo_query error: {e}")
diff --git a/tests/python_client/chaos/testcases/test_all_checker_operation.py b/tests/python_client/chaos/testcases/test_all_checker_operation.py
index 1feccf220f..545ae4ddb0 100644
--- a/tests/python_client/chaos/testcases/test_all_checker_operation.py
+++ b/tests/python_client/chaos/testcases/test_all_checker_operation.py
@@ -52,23 +52,36 @@ class TestBase:
 class TestOperations(TestBase):
 
     @pytest.fixture(scope="function", autouse=True)
-    def connection(self, host, port, user, password, milvus_ns, database_name):
-        if user and password:
-            # log.info(f"connect to {host}:{port} with user {user} and password {password}")
-            connections.connect('default', host=host, port=port, user=user, password=password)
+    def connection(self, host, port, user, password, uri, token, milvus_ns, database_name):
+        # Prioritize uri and token for connection
+        if uri:
+            actual_uri = uri
         else:
-            connections.connect('default', host=host, port=port)
+            actual_uri = f"http://{host}:{port}"
+
+        if token:
+            actual_token = token
+        else:
+            actual_token = f"{user}:{password}" if user and password else None
+
+        if actual_token:
+            connections.connect('default', uri=actual_uri, token=actual_token)
+        else:
+            connections.connect('default', uri=actual_uri)
+
         if connections.has_connection("default") is False:
             raise Exception("no connections")
         all_dbs = db.list_database()
         if database_name not in all_dbs:
             db.create_database(database_name)
         db.using_database(database_name)
-        log.info(f"connect to milvus {host}:{port}, db {database_name} successfully")
+        log.info(f"connect to milvus {actual_uri}, db {database_name} successfully")
         self.host = host
         self.port = port
         self.user = user
         self.password = password
+        self.uri = actual_uri
+        self.token = actual_token
         self.milvus_sys = MilvusSys(alias='default')
         self.milvus_ns = milvus_ns
         self.release_name = get_milvus_instance_name(self.milvus_ns, milvus_sys=self.milvus_sys)
diff --git a/tests/python_client/chaos/testcases/test_all_collections_after_chaos.py b/tests/python_client/chaos/testcases/test_all_collections_after_chaos.py
index 0119bf469e..323ab55f5e 100644
--- a/tests/python_client/chaos/testcases/test_all_collections_after_chaos.py
+++ b/tests/python_client/chaos/testcases/test_all_collections_after_chaos.py
@@ -1,8 +1,7 @@
 import time
 import pytest
 from faker import Faker
-from pymilvus import Collection
-from base.client_base import TestcaseBase
+from pymilvus import MilvusClient, CollectionSchema
 from common import common_func as cf
 from common import common_type as ct
 from common.common_type import CaseLabel
@@ -11,7 +10,8 @@ from utils.util_common import get_collections
 
 fake = Faker()
 
-class TestAllCollection(TestcaseBase):
+
+class TestAllCollection:
     """ Test case of end to end"""
 
     @pytest.fixture(scope="function", params=get_collections(file_name="chaos_test_all_collections.json"))
@@ -20,6 +20,23 @@ class TestAllCollection(TestcaseBase):
             pytest.skip("The collection name is invalid")
         yield request.param
 
+    @pytest.fixture(scope="function")
+    def milvus_client(self):
+        """Initialize MilvusClient"""
+        if cf.param_info.param_uri:
+            uri = cf.param_info.param_uri
+        else:
+            uri = "http://" + cf.param_info.param_host + ":" + str(cf.param_info.param_port)
+
+        if cf.param_info.param_token:
+            token = cf.param_info.param_token
+        else:
+            token = f"{cf.param_info.param_user}:{cf.param_info.param_password}"
+
+        client = MilvusClient(uri=uri, token=token)
+        yield client
+        client.close()
+
     def teardown_method(self, method):
         log.info(("*" * 35) + " teardown " + ("*" * 35))
         log.info("[teardown_method] Start teardown test case %s..." %
@@ -27,17 +44,18 @@ class TestAllCollection(TestcaseBase):
         log.info("skip drop collection")
 
     @pytest.mark.tags(CaseLabel.L1)
-    def test_milvus_default(self, collection_name):
-        self._connect()
+    def test_milvus_default(self, collection_name, milvus_client):
         # create
         name = collection_name if collection_name else cf.gen_unique_str("Checker_")
         t0 = time.time()
-        schema = Collection(name=name).schema
-        collection_w = self.init_collection_wrap(name=name, schema=schema)
+
+        # Get schema from existing collection
+        collection_info = milvus_client.describe_collection(collection_name=name)
+        schema = CollectionSchema.construct_from_dict(collection_info)
         tt = time.time() - t0
-        assert collection_w.name == name
+        assert collection_info['collection_name'] == name
+
         # get collection info
-        schema = collection_w.schema
         dim = cf.get_dim_by_schema(schema=schema)
         int64_field_name = cf.get_int64_field_name(schema=schema)
         float_vector_field_name = cf.get_float_vec_field_name(schema=schema)
@@ -46,60 +64,86 @@ class TestAllCollection(TestcaseBase):
         bm25_vec_field_name_list = cf.get_bm25_vec_field_name_list(schema=schema)
 
         # compact collection before getting num_entities
-        collection_w.flush(timeout=180)
-        collection_w.compact()
-        collection_w.wait_for_compaction_completed(timeout=720)
+        milvus_client.flush(collection_name=name, timeout=180)
+        compact_job_id = milvus_client.compact(collection_name=name, timeout=180)
 
-        entities = collection_w.num_entities
+        # wait for compaction completed
+        max_wait_time = 720
+        start_time = time.time()
+        while time.time() - start_time < max_wait_time:
+            compact_state = milvus_client.get_compaction_state(compact_job_id)
+            if compact_state == "Completed":
+                break
+            time.sleep(5)
+
+        entities = milvus_client.get_collection_stats(collection_name=name).get("row_count", 0)
         log.info(f"assert create collection: {tt}, init_entities: {entities}")
 
         # insert
         offset = -3000
-        data = cf.gen_row_data_by_schema(nb=ct.default_nb, schema=schema, start=offset)
+        data = cf.gen_row_data_by_schema(nb=ct.default_nb, schema=collection_info, start=offset)
         t0 = time.time()
-        _, res = collection_w.insert(data)
+        res = milvus_client.insert(collection_name=name, data=data)
         tt = time.time() - t0
         log.info(f"assert insert: {tt}")
-        assert res
+        assert res.get('insert_count', 0) > 0
 
         # flush
         t0 = time.time()
-        _, check_result = collection_w.flush(timeout=180)
-        assert check_result
-        # assert collection_w.num_entities == len(data[0]) + entities
+        milvus_client.flush(collection_name=name, timeout=180)
         tt = time.time() - t0
-        entities = collection_w.num_entities
+        entities = milvus_client.get_collection_stats(collection_name=name).get("row_count", 0)
         log.info(f"assert flush: {tt}, entities: {entities}")
 
         # show index infos
-        index_infos = [index.to_dict() for index in collection_w.indexes]
-        log.info(f"index info: {index_infos}")
-        fields_created_index = [index["field"] for index in index_infos]
+        index_names = milvus_client.list_indexes(collection_name=name)
+        log.info(f"index names: {index_names}")
+        fields_created_index = []
+        for idx_name in index_names:
+            try:
+                idx_info = milvus_client.describe_index(collection_name=name, index_name=idx_name)
+                if 'field_name' in idx_info:
+                    fields_created_index.append(idx_info['field_name'])
+            except Exception as e:
+                log.debug(f"Failed to describe index {idx_name}: {e}")
 
         # create index if not have
-        index_params = {"index_type": "HNSW", "metric_type": "L2", "params": {"M": 48, "efConstruction": 500}}
-
+        index_params = milvus_client.prepare_index_params()
         for f in float_vector_field_name_list:
             if f not in fields_created_index:
                 t0 = time.time()
-                index, _ = collection_w.create_index(field_name=float_vector_field_name,
-                                                     index_params=index_params)
+                index_params.add_index(
+                    field_name=f,
+                    index_type="HNSW",
+                    metric_type="L2",
+                    params={"M": 48, "efConstruction": 500}
+                )
+                milvus_client.create_index(
+                    collection_name=name,
+                    index_params=index_params
+                )
                 tt = time.time() - t0
                 log.info(f"create index for field {f} cost: {tt} seconds")
+                index_params = milvus_client.prepare_index_params()  # reset for next field
+
         # show index infos
-        index_infos = [index.to_dict() for index in collection_w.indexes]
-        log.info(f"index info: {index_infos}")
+        index_names = milvus_client.list_indexes(collection_name=name)
+        log.info(f"index names: {index_names}")
 
         # load
-        collection_w.load()
+        milvus_client.load_collection(collection_name=name)
 
         # search
         search_vectors = cf.gen_vectors(1, dim)
         dense_search_params = {"metric_type": "L2", "params": {"ef": 64}}
         t0 = time.time()
-        res_1, _ = collection_w.search(data=search_vectors,
-                                       anns_field=float_vector_field_name,
-                                       param=dense_search_params, limit=1)
+        res_1 = milvus_client.search(
+            collection_name=name,
+            data=search_vectors,
+            anns_field=float_vector_field_name,
+            search_params=dense_search_params,
+            limit=1
+        )
         tt = time.time() - t0
         log.info(f"assert search: {tt}")
         assert len(res_1) == 1
@@ -109,9 +153,13 @@ class TestAllCollection(TestcaseBase):
             queries = [fake.text() for _ in range(1)]
             bm25_search_params = {"metric_type": "BM25", "params": {}}
             t0 = time.time()
-            res_2, _ = collection_w.search(data=queries,
-                                           anns_field=bm25_vec_field_name_list[0],
-                                            param=bm25_search_params, limit=1)
+            res_2 = milvus_client.search(
+                collection_name=name,
+                data=queries,
+                anns_field=bm25_vec_field_name_list[0],
+                search_params=bm25_search_params,
+                limit=1
+            )
             tt = time.time() - t0
             log.info(f"assert full text search: {tt}")
             assert len(res_2) == 1
@@ -119,30 +167,37 @@ class TestAllCollection(TestcaseBase):
         # query
         term_expr = f'{int64_field_name} in {[i for i in range(offset, 0)]}'
         t0 = time.time()
-        res, _ = collection_w.query(term_expr)
+        res = milvus_client.query(
+            collection_name=name,
+            filter=term_expr,
+            limit=5
+        )
         tt = time.time() - t0
         log.info(f"assert query result {len(res)}: {tt}")
-        assert len(res) >= len(data[0])
+        assert len(res) > 0
 
         # text match
         if len(text_match_fields) > 0:
             queries = [fake.text().replace("\n", " ") for _ in range(1)]
-
             expr = f"text_match({text_match_fields[0]}, '{queries[0]}')"
             t0 = time.time()
-            res, _ = collection_w.query(expr)
+            res = milvus_client.query(
+                collection_name=name,
+                filter=expr,
+                limit=5
+            )
             tt = time.time() - t0
             log.info(f"assert text match: {tt}")
             assert len(res) >= 0
 
         # insert data
-        d = cf.gen_row_data_by_schema(nb=ct.default_nb, schema=schema)
-        collection_w.insert(d)
+        d = cf.gen_row_data_by_schema(nb=ct.default_nb, schema=collection_info)
+        milvus_client.insert(collection_name=name, data=d)
 
         # release and load
         t0 = time.time()
-        collection_w.release()
-        collection_w.load()
+        milvus_client.release_collection(collection_name=name)
+        milvus_client.load_collection(collection_name=name)
         tt = time.time() - t0
         log.info(f"release and load: {tt}")
 
@@ -151,9 +206,13 @@ class TestAllCollection(TestcaseBase):
         topk = 5
         search_vectors = cf.gen_vectors(nq, dim)
         t0 = time.time()
-        res, _ = collection_w.search(data=search_vectors,
-                                     anns_field=float_vector_field_name,
-                                     param=dense_search_params, limit=topk)
+        res = milvus_client.search(
+            collection_name=name,
+            data=search_vectors,
+            anns_field=float_vector_field_name,
+            search_params=dense_search_params,
+            limit=topk
+        )
         tt = time.time() - t0
         log.info(f"assert search: {tt}")
         assert len(res) == nq
@@ -164,9 +223,13 @@ class TestAllCollection(TestcaseBase):
             queries = [fake.text() for _ in range(1)]
             bm25_search_params = {"metric_type": "BM25", "params": {}}
             t0 = time.time()
-            res_2, _ = collection_w.search(data=queries,
-                                           anns_field=bm25_vec_field_name_list[0],
-                                            param=bm25_search_params, limit=1)
+            res_2 = milvus_client.search(
+                collection_name=name,
+                data=queries,
+                anns_field=bm25_vec_field_name_list[0],
+                search_params=bm25_search_params,
+                limit=1
+            )
             tt = time.time() - t0
             log.info(f"assert full text search: {tt}")
             assert len(res_2) == 1
@@ -174,7 +237,11 @@ class TestAllCollection(TestcaseBase):
         # query
         term_expr = f'{int64_field_name} > -3000'
         t0 = time.time()
-        res, _ = collection_w.query(term_expr)
+        res = milvus_client.query(
+            collection_name=name,
+            filter=term_expr,
+            limit=5
+        )
         tt = time.time() - t0
         log.info(f"assert query result {len(res)}: {tt}")
         assert len(res) > 0
@@ -184,7 +251,11 @@ class TestAllCollection(TestcaseBase):
             queries = [fake.text().replace("\n", " ") for _ in range(1)]
             expr = f"text_match({text_match_fields[0]}, '{queries[0]}')"
             t0 = time.time()
-            res, _ = collection_w.query(expr)
+            res = milvus_client.query(
+                collection_name=name,
+                filter=expr,
+                limit=5
+            )
             tt = time.time() - t0
             log.info(f"assert text match: {tt}")
             assert len(res) >= 0
diff --git a/tests/python_client/chaos/testcases/test_concurrent_operation.py b/tests/python_client/chaos/testcases/test_concurrent_operation.py
index 9b4a06bde5..c1762b1cd3 100644
--- a/tests/python_client/chaos/testcases/test_concurrent_operation.py
+++ b/tests/python_client/chaos/testcases/test_concurrent_operation.py
@@ -35,6 +35,11 @@ def get_all_collections():
         with open("/tmp/ci_logs/chaos_test_all_collections.json", "r") as f:
             data = json.load(f)
             all_collections = data["all"]
+            log.info(f"all_collections: {all_collections}")
+            if all_collections == [] or all_collections == "":
+                return [None]
+            else:
+                return all_collections
     except Exception as e:
         log.warning(f"get_all_collections error: {e}")
         return [None]
@@ -57,19 +62,32 @@ class TestBase:
 class TestOperations(TestBase):
 
     @pytest.fixture(scope="function", autouse=True)
-    def connection(self, host, port, user, password, milvus_ns):
-        if user and password:
-            # log.info(f"connect to {host}:{port} with user {user} and password {password}")
-            connections.connect('default', host=host, port=port, user=user, password=password)
+    def connection(self, host, port, user, password, uri, token, milvus_ns):
+        # Prioritize uri and token for connection
+        if uri:
+            actual_uri = uri
         else:
-            connections.connect('default', host=host, port=port)
+            actual_uri = f"http://{host}:{port}"
+
+        if token:
+            actual_token = token
+        else:
+            actual_token = f"{user}:{password}" if user and password else None
+
+        if actual_token:
+            connections.connect('default', uri=actual_uri, token=actual_token)
+        else:
+            connections.connect('default', uri=actual_uri)
+
         if connections.has_connection("default") is False:
             raise Exception("no connections")
-        log.info("connect to milvus successfully")
+        log.info(f"connect to milvus successfully, uri: {actual_uri}")
         self.host = host
         self.port = port
         self.user = user
         self.password = password
+        self.uri = actual_uri
+        self.token = actual_token
         self.milvus_sys = MilvusSys(alias='default')
         self.milvus_ns = milvus_ns
         self.release_name = get_milvus_instance_name(self.milvus_ns, milvus_sys=self.milvus_sys)
@@ -96,9 +114,11 @@ class TestOperations(TestBase):
 
     @pytest.fixture(scope="function", params=get_all_collections())
     def collection_name(self, request):
+        log.info(f"collection_name: {request.param}")
         if request.param == [] or request.param == "":
-            pytest.skip("The collection name is invalid")
-        yield request.param
+            yield None
+        else:
+            yield request.param
 
     @pytest.mark.tags(CaseLabel.L3)
     def test_operations(self, request_duration, is_check, collection_name):
diff --git a/tests/python_client/chaos/testcases/test_concurrent_operation_for_multi_tenancy.py b/tests/python_client/chaos/testcases/test_concurrent_operation_for_multi_tenancy.py
index e524efeb5e..18dcd71c6e 100644
--- a/tests/python_client/chaos/testcases/test_concurrent_operation_for_multi_tenancy.py
+++ b/tests/python_client/chaos/testcases/test_concurrent_operation_for_multi_tenancy.py
@@ -45,12 +45,23 @@ class TestBase:
 class TestOperations(TestBase):
 
     @pytest.fixture(scope="function", autouse=True)
-    def connection(self, host, port, user, password, db_name, milvus_ns):
-        if user and password:
-            log.info(f"connect to {host}:{port} with user {user} and password {password}")
-            connections.connect('default', uri=f"{host}:{port}", token=f"{user}:{password}")
+    def connection(self, host, port, user, password, uri, token, db_name, milvus_ns):
+        # Prioritize uri and token for connection
+        if uri:
+            actual_uri = uri
         else:
-            connections.connect('default', host=host, port=port)
+            actual_uri = f"http://{host}:{port}"
+
+        if token:
+            actual_token = token
+        else:
+            actual_token = f"{user}:{password}" if user and password else None
+
+        if actual_token:
+            connections.connect('default', uri=actual_uri, token=actual_token)
+        else:
+            connections.connect('default', uri=actual_uri)
+
         if connections.has_connection("default") is False:
             raise Exception("no connections")
         all_dbs = db.list_database()
@@ -58,11 +69,13 @@ class TestOperations(TestBase):
         if db_name not in all_dbs:
             db.create_database(db_name)
         db.using_database(db_name)
-        log.info(f"connect to milvus {host}:{port}, db {db_name} successfully")
+        log.info(f"connect to milvus {actual_uri}, db {db_name} successfully")
         self.host = host
         self.port = port
         self.user = user
         self.password = password
+        self.uri = actual_uri
+        self.token = actual_token
         self.milvus_ns = milvus_ns
 
     def init_health_checkers(self, collection_name=None):
diff --git a/tests/python_client/chaos/testcases/test_single_request_operation.py b/tests/python_client/chaos/testcases/test_single_request_operation.py
index 31b4bf1dcf..7eb4a64346 100644
--- a/tests/python_client/chaos/testcases/test_single_request_operation.py
+++ b/tests/python_client/chaos/testcases/test_single_request_operation.py
@@ -55,15 +55,26 @@ class TestBase:
 class TestOperations(TestBase):
 
     @pytest.fixture(scope="function", autouse=True)
-    def connection(self, host, port, user, password, milvus_ns, minio_host, enable_import, minio_bucket):
-        if user and password:
-            # log.info(f"connect to {host}:{port} with user {user} and password {password}")
-            connections.connect('default', host=host, port=port, user=user, password=password)
+    def connection(self, host, port, user, password, uri, token, milvus_ns, minio_host, enable_import, minio_bucket):
+        # Prioritize uri and token for connection
+        if uri:
+            actual_uri = uri
         else:
-            connections.connect('default', host=host, port=port)
+            actual_uri = f"http://{host}:{port}"
+
+        if token:
+            actual_token = token
+        else:
+            actual_token = f"{user}:{password}" if user and password else None
+
+        if actual_token:
+            connections.connect('default', uri=actual_uri, token=actual_token)
+        else:
+            connections.connect('default', uri=actual_uri)
+
         if connections.has_connection("default") is False:
             raise Exception("no connections")
-        log.info("connect to milvus successfully")
+        log.info(f"connect to milvus successfully, uri: {actual_uri}")
         pymilvus_version = pymilvus.__version__
         server_version = utility.get_server_version()
         log.info(f"server version: {server_version}")
@@ -72,6 +83,8 @@ class TestOperations(TestBase):
         self.port = port
         self.user = user
         self.password = password
+        self.uri = actual_uri
+        self.token = actual_token
         self.milvus_sys = MilvusSys(alias='default')
         self.milvus_ns = milvus_ns
         self.release_name = get_milvus_instance_name(self.milvus_ns, milvus_sys=self.milvus_sys)
diff --git a/tests/python_client/chaos/testcases/test_single_request_operation_for_standby.py b/tests/python_client/chaos/testcases/test_single_request_operation_for_standby.py
index 91bbe4f5e8..844fabc63e 100644
--- a/tests/python_client/chaos/testcases/test_single_request_operation_for_standby.py
+++ b/tests/python_client/chaos/testcases/test_single_request_operation_for_standby.py
@@ -38,19 +38,32 @@ class TestBase:
 class TestOperations(TestBase):
 
     @pytest.fixture(scope="function", autouse=True)
-    def connection(self, host, port, user, password, milvus_ns):
-        if user and password:
-            # log.info(f"connect to {host}:{port} with user {user} and password {password}")
-            connections.connect('default', host=host, port=port, user=user, password=password)
+    def connection(self, host, port, user, password, uri, token, milvus_ns):
+        # Prioritize uri and token for connection
+        if uri:
+            actual_uri = uri
         else:
-            connections.connect('default', host=host, port=port)
+            actual_uri = f"http://{host}:{port}"
+
+        if token:
+            actual_token = token
+        else:
+            actual_token = f"{user}:{password}" if user and password else None
+
+        if actual_token:
+            connections.connect('default', uri=actual_uri, token=actual_token)
+        else:
+            connections.connect('default', uri=actual_uri)
+
         if connections.has_connection("default") is False:
             raise Exception("no connections")
-        log.info("connect to milvus successfully")
+        log.info(f"connect to milvus successfully, uri: {actual_uri}")
         self.host = host
         self.port = port
         self.user = user
         self.password = password
+        self.uri = actual_uri
+        self.token = actual_token
         self.milvus_sys = MilvusSys(alias='default')
         self.chaos_ns = constants.CHAOS_NAMESPACE
         self.milvus_ns = milvus_ns
diff --git a/tests/python_client/chaos/testcases/test_verify_all_collections.py b/tests/python_client/chaos/testcases/test_verify_all_collections.py
index 47f4918cc2..93a91834c2 100644
--- a/tests/python_client/chaos/testcases/test_verify_all_collections.py
+++ b/tests/python_client/chaos/testcases/test_verify_all_collections.py
@@ -56,19 +56,32 @@ class TestOperations(TestBase):
         yield request.param
 
     @pytest.fixture(scope="function", autouse=True)
-    def connection(self, host, port, user, password):
-        if user and password:
-            # log.info(f"connect to {host}:{port} with user {user} and password {password}")
-            connections.connect('default', host=host, port=port, user=user, password=password)
+    def connection(self, host, port, user, password, uri, token):
+        # Prioritize uri and token for connection
+        if uri:
+            actual_uri = uri
         else:
-            connections.connect('default', host=host, port=port)
+            actual_uri = f"http://{host}:{port}"
+
+        if token:
+            actual_token = token
+        else:
+            actual_token = f"{user}:{password}" if user and password else None
+
+        if actual_token:
+            connections.connect('default', uri=actual_uri, token=actual_token)
+        else:
+            connections.connect('default', uri=actual_uri)
+
         if connections.has_connection("default") is False:
             raise Exception("no connections")
-        log.info("connect to milvus successfully")
+        log.info(f"connect to milvus successfully, uri: {actual_uri}")
         self.host = host
         self.port = port
         self.user = user
         self.password = password
+        self.uri = actual_uri
+        self.token = actual_token
 
     def init_health_checkers(self, collection_name=None):
         c_name = collection_name