diff --git a/elasticsearch/helpers/test.py b/elasticsearch/helpers/test.py
index a5ab9964..91f6790d 100644
--- a/elasticsearch/helpers/test.py
+++ b/elasticsearch/helpers/test.py
@@ -24,6 +24,13 @@ from unittest import SkipTest, TestCase
 from elasticsearch import Elasticsearch
 from elasticsearch.exceptions import ConnectionError
 
+if "ELASTICSEARCH_URL" in os.environ:
+    ELASTICSEARCH_URL = os.environ["ELASTICSEARCH_URL"]
+elif os.environ.get("TEST_SUITE") == "platinum":
+    ELASTICSEARCH_URL = "https://elastic:changeme@localhost:9200"
+else:
+    ELASTICSEARCH_URL = "http://localhost:9200"
+
 
 def get_test_client(nowait=False, **kwargs):
     # construct kwargs from the environment
@@ -37,7 +44,7 @@ def get_test_client(nowait=False, **kwargs):
         )
 
     kw.update(kwargs)
-    client = Elasticsearch(os.environ.get("ELASTICSEARCH_URL", {}), **kw)
+    client = Elasticsearch(ELASTICSEARCH_URL, **kw)
 
     # wait for yellow status
     for _ in range(1 if nowait else 100):
diff --git a/elasticsearch/helpers/test.pyi b/elasticsearch/helpers/test.pyi
index f301b6dd..8116a137 100644
--- a/elasticsearch/helpers/test.pyi
+++ b/elasticsearch/helpers/test.pyi
@@ -20,6 +20,8 @@ from unittest import TestCase
 
 from ..client import Elasticsearch
 
+ELASTICSEARCH_URL: str
+
 def get_test_client(nowait: bool = ..., **kwargs: Any) -> Elasticsearch: ...
 def _get_version(version_string: str) -> Tuple[int, ...]: ...
 
diff --git a/test_elasticsearch/test_async/test_server/conftest.py b/test_elasticsearch/test_async/test_server/conftest.py
index cdd414a1..8df2ce91 100644
--- a/test_elasticsearch/test_async/test_server/conftest.py
+++ b/test_elasticsearch/test_async/test_server/conftest.py
@@ -16,11 +16,11 @@
 #  under the License.
 
 import asyncio
-import os
 
 import pytest
 
 import elasticsearch
+from elasticsearch.helpers.test import ELASTICSEARCH_URL
 
 from ...utils import wipe_cluster
 
@@ -34,15 +34,8 @@ async def async_client():
         if not hasattr(elasticsearch, "AsyncElasticsearch"):
             pytest.skip("test requires 'AsyncElasticsearch'")
 
-        kw = {
-            "timeout": 3,
-            "ca_certs": ".ci/certs/ca.pem",
-            "connection_class": elasticsearch.AIOHttpConnection,
-        }
-
-        client = elasticsearch.AsyncElasticsearch(
-            [os.environ.get("ELASTICSEARCH_HOST", {})], **kw
-        )
+        kw = {"timeout": 3, "ca_certs": ".ci/certs/ca.pem"}
+        client = elasticsearch.AsyncElasticsearch(ELASTICSEARCH_URL, **kw)
 
         # wait for yellow status
         for _ in range(100):
diff --git a/test_elasticsearch/test_server/conftest.py b/test_elasticsearch/test_server/conftest.py
index e3f3e117..8db1ad19 100644
--- a/test_elasticsearch/test_server/conftest.py
+++ b/test_elasticsearch/test_server/conftest.py
@@ -21,6 +21,7 @@ import time
 import pytest
 
 import elasticsearch
+from elasticsearch.helpers.test import ELASTICSEARCH_URL
 
 from ..utils import wipe_cluster
 
@@ -29,18 +30,15 @@ from ..utils import wipe_cluster
 def sync_client():
     client = None
     try:
-        kw = {
-            "timeout": 3,
-            "ca_certs": ".ci/certs/ca.pem",
-            "connection_class": getattr(
-                elasticsearch,
-                os.environ.get("PYTHON_CONNECTION_CLASS", "Urllib3HttpConnection"),
-            ),
-        }
+        kw = {"timeout": 3, "ca_certs": ".ci/certs/ca.pem"}
+        if "PYTHON_CONNECTION_CLASS" in os.environ:
+            from elasticsearch import connection
 
-        client = elasticsearch.Elasticsearch(
-            [os.environ.get("ELASTICSEARCH_URL", {})], **kw
-        )
+            kw["connection_class"] = getattr(
+                connection, os.environ["PYTHON_CONNECTION_CLASS"]
+            )
+
+        client = elasticsearch.Elasticsearch(ELASTICSEARCH_URL, **kw)
 
         # wait for yellow status
         for _ in range(100):
diff --git a/test_elasticsearch/utils.py b/test_elasticsearch/utils.py
index 31e2f96c..b9d01376 100644
--- a/test_elasticsearch/utils.py
+++ b/test_elasticsearch/utils.py
@@ -71,7 +71,7 @@ def wipe_cluster_settings(client):
     for name, value in settings.items():
         if value:
             new_settings.setdefault(name, {})
-            for key in name.keys():
+            for key in value.keys():
                 new_settings[name][key + ".*"] = None
     if new_settings:
         client.cluster.put_settings(body=new_settings)
@@ -104,7 +104,6 @@ def wipe_data_streams(client):
 
 
 def wipe_indices(client):
-
     client.indices.delete(
         index="*",
         expand_wildcards="all",