Use the async_migrate_paypal_agreement function to get the migration URL (#83469)

* Use the async_migrate_paypal_agreement function to get the migration URL

* Update URL

* Handle timeout error

tests/components/cloud/test_subscription.py

@@ -0,0 +1,61 @@
+"""Test cloud subscription functions."""
+import asyncio
+from unittest.mock import AsyncMock, Mock
+
+from hass_nabucasa import Cloud
+import pytest
+
+from homeassistant.components.cloud.subscription import (
+    async_migrate_paypal_agreement,
+    async_subscription_info,
+)
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
+
+from tests.test_util.aiohttp import AiohttpClientMocker
+
+
+@pytest.fixture(name="mocked_cloud")
+def mocked_cloud_object(hass: HomeAssistant) -> Cloud:
+    """Mock cloud object."""
+    return Mock(
+        accounts_server="accounts.nabucasa.com",
+        auth=Mock(async_check_token=AsyncMock()),
+        websession=async_get_clientsession(hass),
+    )
+
+
+async def test_fetching_subscription_with_timeout_error(
+    aioclient_mock: AiohttpClientMocker,
+    caplog: pytest.LogCaptureFixture,
+    mocked_cloud: Cloud,
+):
+    """Test that we handle timeout error."""
+    aioclient_mock.get(
+        "https://accounts.nabucasa.com/payments/subscription_info",
+        exc=asyncio.TimeoutError(),
+    )
+
+    assert await async_subscription_info(mocked_cloud) is None
+    assert (
+        "A timeout of 10 was reached while trying to fetch subscription information"
+        in caplog.text
+    )
+
+
+async def test_migrate_paypal_agreement_with_timeout_error(
+    aioclient_mock: AiohttpClientMocker,
+    caplog: pytest.LogCaptureFixture,
+    mocked_cloud: Cloud,
+):
+    """Test that we handle timeout error."""
+    aioclient_mock.post(
+        "https://accounts.nabucasa.com/payments/migrate_paypal_agreement",
+        exc=asyncio.TimeoutError(),
+    )
+
+    assert await async_migrate_paypal_agreement(mocked_cloud) is None
+    assert (
+        "A timeout of 10 was reached while trying to start agreement migration"
+        in caplog.text
+    )