Don't keep fetching snitun token when sub expired

hass_nabucasa/remote.py

@@ -33,6 +33,10 @@ class RemoteNotConnected(RemoteError):
     """Raise if a request need connection and we are not ready."""
 
 
+class SubscriptionExpired(RemoteError):
+    """Raise if we cannot connect because subscription expired."""
+
+
 @attr.s
 class SniTunToken:
     """Handle snitun token."""
@@ -241,13 +245,17 @@ async def _refresh_snitun_token(self) -> None:
             _LOGGER.debug("Don't need refresh snitun token")
             return
 
+        if self.cloud.subscription_expired:
+            raise SubscriptionExpired()
+
         # Generate session token
         aes_key, aes_iv = generate_aes_keyset()
         try:
             async with async_timeout.timeout(30):
                 resp = await cloud_api.async_remote_token(self.cloud, aes_key, aes_iv)
-            assert resp.status == 200
-        except (asyncio.TimeoutError, AssertionError):
+            if resp.status != 200:
+                raise RemoteBackendError()
+        except asyncio.TimeoutError:
             raise RemoteBackendError() from None
 
         data = await resp.json()
@@ -283,6 +291,8 @@ async def connect(self) -> None:
             _LOGGER.error("Connection problem to snitun server")
         except RemoteBackendError:
             _LOGGER.error("Can't refresh the snitun token")
+        except SubscriptionExpired:
+            pass
         except AttributeError:
             pass  # Ignore because HA shutdown on snitun token refresh
         finally:

tests/conftest.py

@@ -43,6 +43,7 @@ def _executor(call, *args):
 def auth_cloud_mock(cloud_mock):
     """Return an authenticated cloud instance."""
     cloud_mock.auth.async_check_token.side_effect = mock_coro
+    cloud_mock.subscription_expired = False
     return cloud_mock
 
 

tests/test_remote.py

@@ -11,7 +11,7 @@
     DISPATCH_REMOTE_CONNECT,
     DISPATCH_REMOTE_DISCONNECT,
 )
-from hass_nabucasa.remote import RemoteUI
+from hass_nabucasa.remote import RemoteUI, SubscriptionExpired
 from hass_nabucasa.utils import utcnow
 
 from .common import MockAcme, MockSnitun, mock_coro
@@ -468,3 +468,11 @@ async def test_certificate_task_renew_cert(
         await remote.load_backend()
         await asyncio.sleep(0.1)
         assert acme_mock.call_issue
+
+
+async def test_refresh_token_no_sub(auth_cloud_mock):
+    """Test that we rais SubscriptionExpired if expired sub."""
+    auth_cloud_mock.subscription_expired = True
+
+    with pytest.raises(SubscriptionExpired):
+        await RemoteUI(auth_cloud_mock)._refresh_snitun_token()