diff --git a/CHANGES/9141.misc.rst b/CHANGES/9141.misc.rst
new file mode 100644
index 00000000000..6ee9d726d39
--- /dev/null
+++ b/CHANGES/9141.misc.rst
@@ -0,0 +1,3 @@
+- Modified the `ClientSession` class by adding a private attribute `_test` of type `bool`, with a default value of `False` to the class.
+- Modified the default value of `retry_persistent_connection` in `ClientSession` to `False` if `_test` was `True`.
+- Also, `TestClient` initialized `ClientSession` with `test=True`.
diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index e18aad14f64..c97977fe8ae 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -309,6 +309,7 @@ Sergey Skripnick
 Serhii Charykov
 Serhii Kostel
 Serhiy Storchaka
+Shubh Agarwal
 Simon Kennedy
 Sin-Woo Bang
 Stanislas Plum
diff --git a/aiohttp/client.py b/aiohttp/client.py
index f31ad6bad25..400d2edeb56 100644
--- a/aiohttp/client.py
+++ b/aiohttp/client.py
@@ -286,6 +286,7 @@ def __init__(
         max_line_size: int = 8190,
         max_field_size: int = 8190,
         fallback_charset_resolver: _CharsetResolver = lambda r, b: "utf-8",
+        test: bool = False,
     ) -> None:
         # We initialise _connector to None immediately, as it's referenced in __del__()
         # and could cause issues if an exception occurs during initialisation.
@@ -367,6 +368,7 @@ def __init__(
 
         self._default_proxy = proxy
         self._default_proxy_auth = proxy_auth
+        self._test = test
 
     def __init_subclass__(cls: Type["ClientSession"]) -> None:
         raise TypeError(
@@ -539,7 +541,9 @@ async def _request(
         try:
             with timer:
                 # https://www.rfc-editor.org/rfc/rfc9112.html#name-retrying-requests
-                retry_persistent_connection = method in IDEMPOTENT_METHODS
+                retry_persistent_connection = (
+                    False if self._test else method in IDEMPOTENT_METHODS
+                )
                 while True:
                     url, auth_from_url = strip_auth_from_url(url)
                     if not url.raw_host:
diff --git a/aiohttp/test_utils.py b/aiohttp/test_utils.py
index 88dcf8ebf1b..2c076f39ed9 100644
--- a/aiohttp/test_utils.py
+++ b/aiohttp/test_utils.py
@@ -293,7 +293,7 @@ def __init__(  # type: ignore[misc]
         self._server = server
         if cookie_jar is None:
             cookie_jar = aiohttp.CookieJar(unsafe=True)
-        self._session = ClientSession(cookie_jar=cookie_jar, **kwargs)
+        self._session = ClientSession(cookie_jar=cookie_jar, test=True, **kwargs)
         self._closed = False
         self._responses: List[ClientResponse] = []
         self._websockets: List[ClientWebSocketResponse] = []