diff --git a/pyproject.toml b/pyproject.toml
index 33abbd5d9..0c66e2f50 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -59,6 +59,7 @@ dev = [
     "aiohttp",
     "pytest",
     "pytest-cov",
+    "pytest-mock",
     "pytest-asyncio",
     "coverage",
     "jinja2",
diff --git a/test_elasticsearch/test_dsl/conftest.py b/test_elasticsearch/test_dsl/conftest.py
index 2e5fa91af..653b54588 100644
--- a/test_elasticsearch/test_dsl/conftest.py
+++ b/test_elasticsearch/test_dsl/conftest.py
@@ -22,7 +22,7 @@
 import time
 from datetime import datetime
 from typing import Any, AsyncGenerator, Dict, Generator, Tuple, cast
-from unittest import SkipTest, TestCase
+from unittest import SkipTest
 from unittest.mock import AsyncMock, Mock
 
 import pytest_asyncio
@@ -46,22 +46,21 @@
     create_flat_git_index,
     create_git_index,
 )
+from ..utils import CA_CERTS
 
-if "ELASTICSEARCH_URL" in os.environ:
-    ELASTICSEARCH_URL = os.environ["ELASTICSEARCH_URL"]
-else:
-    ELASTICSEARCH_URL = "http://localhost:9200"
 
-
-def get_test_client(wait: bool = True, **kwargs: Any) -> Elasticsearch:
+def get_test_client(elasticsearch_url, wait: bool = True, **kwargs: Any) -> Elasticsearch:
     # construct kwargs from the environment
     kw: Dict[str, Any] = {"request_timeout": 30}
 
+    if elasticsearch_url.startswith("https://"):
+        kw["ca_certs"] = CA_CERTS
+
     if "PYTHON_CONNECTION_CLASS" in os.environ:
         kw["node_class"] = os.environ["PYTHON_CONNECTION_CLASS"]
 
     kw.update(kwargs)
-    client = Elasticsearch(ELASTICSEARCH_URL, **kw)
+    client = Elasticsearch(elasticsearch_url, **kw)
 
     # wait for yellow status
     for tries_left in range(100 if wait else 1, 0, -1):
@@ -76,15 +75,17 @@ def get_test_client(wait: bool = True, **kwargs: Any) -> Elasticsearch:
     raise SkipTest("Elasticsearch failed to start.")
 
 
-async def get_async_test_client(wait: bool = True, **kwargs: Any) -> AsyncElasticsearch:
+async def get_async_test_client(
+    elasticsearch_url, wait: bool = True, **kwargs: Any
+) -> AsyncElasticsearch:
     # construct kwargs from the environment
     kw: Dict[str, Any] = {"request_timeout": 30}
 
-    if "PYTHON_CONNECTION_CLASS" in os.environ:
-        kw["node_class"] = os.environ["PYTHON_CONNECTION_CLASS"]
+    if elasticsearch_url.startswith("https://"):
+        kw["ca_certs"] = CA_CERTS
 
     kw.update(kwargs)
-    client = AsyncElasticsearch(ELASTICSEARCH_URL, **kw)
+    client = AsyncElasticsearch(elasticsearch_url, **kw)
 
     # wait for yellow status
     for tries_left in range(100 if wait else 1, 0, -1):
@@ -100,36 +101,6 @@ async def get_async_test_client(wait: bool = True, **kwargs: Any) -> AsyncElasti
     raise SkipTest("Elasticsearch failed to start.")
 
 
-class ElasticsearchTestCase(TestCase):
-    client: Elasticsearch
-
-    @staticmethod
-    def _get_client() -> Elasticsearch:
-        return get_test_client()
-
-    @classmethod
-    def setup_class(cls) -> None:
-        cls.client = cls._get_client()
-
-    def teardown_method(self, _: Any) -> None:
-        # Hidden indices expanded in wildcards in ES 7.7
-        expand_wildcards = ["open", "closed"]
-        if self.es_version() >= (7, 7):
-            expand_wildcards.append("hidden")
-
-        self.client.indices.delete_data_stream(
-            name="*", expand_wildcards=expand_wildcards
-        )
-        self.client.indices.delete(index="*", expand_wildcards=expand_wildcards)
-        self.client.indices.delete_template(name="*")
-        self.client.indices.delete_index_template(name="*")
-
-    def es_version(self) -> Tuple[int, ...]:
-        if not hasattr(self, "_es_version"):
-            self._es_version = _get_version(self.client.info()["version"]["number"])
-        return self._es_version
-
-
 def _get_version(version_string: str) -> Tuple[int, ...]:
     if "." not in version_string:
         return ()
@@ -138,9 +109,11 @@ def _get_version(version_string: str) -> Tuple[int, ...]:
 
 
 @fixture(scope="session")
-def client() -> Elasticsearch:
+def client(elasticsearch_url) -> Elasticsearch:
     try:
-        connection = get_test_client(wait="WAIT_FOR_ES" in os.environ)
+        connection = get_test_client(
+            elasticsearch_url, wait="WAIT_FOR_ES" in os.environ
+        )
         add_connection("default", connection)
         return connection
     except SkipTest:
@@ -148,9 +121,11 @@ def client() -> Elasticsearch:
 
 
 @pytest_asyncio.fixture
-async def async_client() -> AsyncGenerator[AsyncElasticsearch, None]:
+async def async_client(elasticsearch_url) -> AsyncGenerator[AsyncElasticsearch, None]:
     try:
-        connection = await get_async_test_client(wait="WAIT_FOR_ES" in os.environ)
+        connection = await get_async_test_client(
+            elasticsearch_url, wait="WAIT_FOR_ES" in os.environ
+        )
         add_async_connection("default", connection)
         yield connection
         await connection.close()