fix create single_connection_client from url (#2752)

redis/asyncio/client.py

@@ -139,8 +139,12 @@ class initializer. In the case of conflicting arguments, querystring
         arguments always win.
 
         """
+        single_connection_client = kwargs.pop("single_connection_client", False)
         connection_pool = ConnectionPool.from_url(url, **kwargs)
-        return cls(connection_pool=connection_pool)
+        return cls(
+            connection_pool=connection_pool,
+            single_connection_client=single_connection_client,
+        )
 
     def __init__(
         self,

redis/client.py

@@ -906,8 +906,12 @@ class initializer. In the case of conflicting arguments, querystring
         arguments always win.
 
         """
+        single_connection_client = kwargs.pop("single_connection_client", False)
         connection_pool = ConnectionPool.from_url(url, **kwargs)
-        return cls(connection_pool=connection_pool)
+        return cls(
+            connection_pool=connection_pool,
+            single_connection_client=single_connection_client,
+        )
 
     def __init__(
         self,

tests/test_asyncio/test_connection.py

@@ -271,3 +271,9 @@ async def open_connection(*args, **kwargs):
 
     vals = await asyncio.gather(do_read(), do_close())
     assert vals == [b"Hello, World!", None]
+
+
+@pytest.mark.onlynoncluster
+def test_create_single_connection_client_from_url():
+    client = Redis.from_url("redis://localhost:6379/0?", single_connection_client=True)
+    assert client.single_connection_client is True

tests/test_connection.py

@@ -205,3 +205,11 @@ def test_pack_command(Class):
 
     actual = Class().pack_command(*cmd)[0]
     assert actual == expected, f"actual = {actual}, expected = {expected}"
+
+
+@pytest.mark.onlynoncluster
+def test_create_single_connection_client_from_url():
+    client = redis.Redis.from_url(
+        "redis://localhost:6379/0?", single_connection_client=True
+    )
+    assert client.connection is not None