Extract Collection helper from Person integration (#30313)

* Add CRUD foundation

* Use collection helper in person integration

* Lint/pytest

* Add tests

* Lint

* Create notification

tests/conftest.py

@@ -9,6 +9,13 @@ import requests_mock as _requests_mock
 from homeassistant import util
 from homeassistant.auth.const import GROUP_ID_ADMIN, GROUP_ID_READ_ONLY
 from homeassistant.auth.providers import homeassistant, legacy_api_password
+from homeassistant.components.websocket_api.auth import (
+    TYPE_AUTH,
+    TYPE_AUTH_OK,
+    TYPE_AUTH_REQUIRED,
+)
+from homeassistant.components.websocket_api.http import URL
+from homeassistant.setup import async_setup_component
 from homeassistant.util import location
 
 pytest.register_assert_rewrite("tests.common")
@@ -187,3 +194,37 @@ def hass_client(hass, aiohttp_client, hass_access_token):
         )
 
     return auth_client
+
+
+@pytest.fixture
+def hass_ws_client(aiohttp_client, hass_access_token):
+    """Websocket client fixture connected to websocket server."""
+
+    async def create_client(hass, access_token=hass_access_token):
+        """Create a websocket client."""
+        assert await async_setup_component(hass, "websocket_api", {})
+
+        client = await aiohttp_client(hass.http.app)
+
+        with patch("homeassistant.components.http.auth.setup_auth"):
+            websocket = await client.ws_connect(URL)
+            auth_resp = await websocket.receive_json()
+            assert auth_resp["type"] == TYPE_AUTH_REQUIRED
+
+            if access_token is None:
+                await websocket.send_json(
+                    {"type": TYPE_AUTH, "access_token": "incorrect"}
+                )
+            else:
+                await websocket.send_json(
+                    {"type": TYPE_AUTH, "access_token": access_token}
+                )
+
+            auth_ok = await websocket.receive_json()
+            assert auth_ok["type"] == TYPE_AUTH_OK
+
+        # wrap in client
+        websocket.client = client
+        return websocket
+
+    return create_client