Fix freebox pairing in bridge mode

homeassistant/components/freebox/config_flow.py

@@ -11,7 +11,7 @@
 from homeassistant.data_entry_flow import FlowResult
 
 from .const import DOMAIN
-from .router import get_api
+from .router import get_api, get_hosts_list_if_supported
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -69,7 +69,7 @@ async def async_step_link(
 
             # Check permissions
             await fbx.system.get_config()
-            await fbx.lan.get_hosts_list()
+            await get_hosts_list_if_supported(fbx)
 
             # Close connection
             await fbx.close()

homeassistant/components/freebox/router.py

@@ -64,6 +64,33 @@ async def get_api(hass: HomeAssistant, host: str) -> Freepybox:
     return Freepybox(APP_DESC, token_file, API_VERSION)
 
 
+async def get_hosts_list_if_supported(
+    fbx_api: Freepybox,
+) -> tuple[bool, list[dict[str, Any]]]:
+    """Hosts list is not supported when freebox is configured in bridge mode."""
+    supports_hosts: bool = True
+    fbx_devices: list[dict[str, Any]] = []
+    try:
+        fbx_devices = await fbx_api.lan.get_hosts_list() or []
+    except HttpRequestError as err:
+        if (
+            (matcher := re.search(r"Request failed \(APIResponse: (.+)\)", str(err)))
+            and is_json(json_str := matcher.group(1))
+            and (json_resp := json.loads(json_str)).get("error_code") == "nodev"
+        ):
+            # No need to retry, Host list not available
+            supports_hosts = False
+            _LOGGER.debug(
+                "Host list is not available using bridge mode (%s)",
+                json_resp.get("msg"),
+            )
+
+        else:
+            raise err
+
+    return supports_hosts, fbx_devices
+
+
 class FreeboxRouter:
     """Representation of a Freebox router."""
 
@@ -111,27 +138,9 @@ async def update_device_trackers(self) -> None:
 
         # Access to Host list not available in bridge mode, API return error_code 'nodev'
         if self.supports_hosts:
-            try:
-                fbx_devices = await self._api.lan.get_hosts_list()
-            except HttpRequestError as err:
-                if (
-                    (
-                        matcher := re.search(
-                            r"Request failed \(APIResponse: (.+)\)", str(err)
-                        )
-                    )
-                    and is_json(json_str := matcher.group(1))
-                    and (json_resp := json.loads(json_str)).get("error_code") == "nodev"
-                ):
-                    # No need to retry, Host list not available
-                    self.supports_hosts = False
-                    _LOGGER.debug(
-                        "Host list is not available using bridge mode (%s)",
-                        json_resp.get("msg"),
-                    )
-
-                else:
-                    raise err
+            self.supports_hosts, fbx_devices = await get_hosts_list_if_supported(
+                self._api
+            )
 
         # Adds the Freebox itself
         fbx_devices.append(

tests/components/freebox/conftest.py

@@ -112,3 +112,14 @@ def mock_router_bridge_mode(mock_device_registry_devices, router):
     )
 
     return router
+
+
+@pytest.fixture
+def mock_router_bridge_mode_error(mock_device_registry_devices, router):
+    """Mock a failed connection to Freebox Bridge mode."""
+
+    router().lan.get_hosts_list = AsyncMock(
+        side_effect=HttpRequestError("Request failed (APIResponse: some unknown error)")
+    )
+
+    return router

tests/components/freebox/test_config_flow.py

@@ -69,8 +69,8 @@ async def test_zeroconf(hass: HomeAssistant) -> None:
     assert result["step_id"] == "link"
 
 
-async def test_link(hass: HomeAssistant, router: Mock) -> None:
-    """Test linking."""
+async def internal_test_link(hass: HomeAssistant) -> None:
+    """Test linking internal, common to both router modes."""
     with patch(
         "homeassistant.components.freebox.async_setup_entry",
         return_value=True,
@@ -91,6 +91,30 @@ async def test_link(hass: HomeAssistant, router: Mock) -> None:
         assert len(mock_setup_entry.mock_calls) == 1
 
 
+async def test_link(hass: HomeAssistant, router: Mock) -> None:
+    """Test link with standard router mode."""
+    await internal_test_link(hass)
+
+
+async def test_link_bridge_mode(hass: HomeAssistant, router_bridge_mode: Mock) -> None:
+    """Test linking for a freebox in bridge mode."""
+    await internal_test_link(hass)
+
+
+async def test_link_bridge_mode_error(
+    hass: HomeAssistant, mock_router_bridge_mode_error: Mock
+) -> None:
+    """Test linking for a freebox in bridge mode, unknown error received from API."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": SOURCE_USER},
+        data={CONF_HOST: MOCK_HOST, CONF_PORT: MOCK_PORT},
+    )
+    result = await hass.config_entries.flow.async_configure(result["flow_id"], {})
+    assert result["type"] == data_entry_flow.FlowResultType.FORM
+    assert result["errors"] == {"base": "cannot_connect"}
+
+
 async def test_abort_if_already_setup(hass: HomeAssistant) -> None:
     """Test we abort if component is already setup."""
     MockConfigEntry(

tests/components/freebox/test_router.py

@@ -1,7 +1,11 @@
 """Tests for the Freebox utility methods."""
 import json
+from unittest.mock import Mock
 
-from homeassistant.components.freebox.router import is_json
+from freebox_api.exceptions import HttpRequestError
+import pytest
+
+from homeassistant.components.freebox.router import get_hosts_list_if_supported, is_json
 
 from .const import DATA_LAN_GET_HOSTS_LIST_MODE_BRIDGE, DATA_WIFI_GET_GLOBAL_CONFIG
 
@@ -20,3 +24,33 @@ async def test_is_json() -> None:
     assert not is_json("")
     assert not is_json("XXX")
     assert not is_json("{XXX}")
+
+
+async def test_get_hosts_list_if_supported(
+    router: Mock,
+) -> None:
+    """In router mode, get_hosts_list is supported and list is filled."""
+    supports_hosts, fbx_devices = await get_hosts_list_if_supported(router())
+    assert supports_hosts is True
+    # List must not be empty; but it's content depends on how many unit tests are executed...
+    assert fbx_devices
+    assert "d633d0c8-958c-43cc-e807-d881b076924b" in str(fbx_devices)
+
+
+async def test_get_hosts_list_if_supported_bridge(
+    router_bridge_mode: Mock,
+) -> None:
+    """In bridge mode, get_hosts_list is NOT supported and list is empty."""
+    supports_hosts, fbx_devices = await get_hosts_list_if_supported(
+        router_bridge_mode()
+    )
+    assert supports_hosts is False
+    assert fbx_devices == []
+
+
+async def test_get_hosts_list_if_supported_bridge_error(
+    mock_router_bridge_mode_error: Mock,
+) -> None:
+    """Other exceptions must be propagated."""
+    with pytest.raises(HttpRequestError):
+        await get_hosts_list_if_supported(mock_router_bridge_mode_error())