Nextbus: Listify directions (#103337)

When a single value is returned, the list wrapper is not present in the
json payload. This patch ensures that the result is always a list.

homeassistant/components/nextbus/config_flow.py

@@ -16,6 +16,7 @@ from homeassistant.helpers.selector import (
 )
 
 from .const import CONF_AGENCY, CONF_ROUTE, CONF_STOP, DOMAIN
+from .util import listify
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -51,7 +52,7 @@ def _get_stop_tags(
     title_counts = Counter(tags.values())
 
     stop_directions: dict[str, str] = {}
-    for direction in route_config["route"]["direction"]:
+    for direction in listify(route_config["route"]["direction"]):
         for stop in direction["stop"]:
             stop_directions[stop["tag"]] = direction["name"]
 

tests/components/nextbus/conftest.py

@@ -1,11 +1,37 @@
 """Test helpers for NextBus tests."""
+from typing import Any
 from unittest.mock import MagicMock
 
 import pytest
 
 
+@pytest.fixture(
+    params=[
+        {"name": "Outbound", "stop": [{"tag": "5650"}]},
+        [
+            {
+                "name": "Outbound",
+                "stop": [{"tag": "5650"}],
+            },
+            {
+                "name": "Inbound",
+                "stop": [{"tag": "5651"}],
+            },
+        ],
+    ]
+)
+def route_config_direction(request: pytest.FixtureRequest) -> Any:
+    """Generate alternative directions values.
+
+    When only on edirection is returned, it is not returned as a list, but instead an object.
+    """
+    return request.param
+
+
 @pytest.fixture
-def mock_nextbus_lists(mock_nextbus: MagicMock) -> MagicMock:
+def mock_nextbus_lists(
+    mock_nextbus: MagicMock, route_config_direction: Any
+) -> MagicMock:
     """Mock all list functions in nextbus to test validate logic."""
     instance = mock_nextbus.return_value
     instance.get_agency_list.return_value = {
@@ -22,16 +48,7 @@ def mock_nextbus_lists(mock_nextbus: MagicMock) -> MagicMock:
                 # Error case test. Duplicate title with no unique direction
                 {"tag": "5652", "title": "Market St & 7th St"},
             ],
-            "direction": [
+            "direction": route_config_direction,
-                {
-                    "name": "Outbound",
-                    "stop": [{"tag": "5650"}],
-                },
-                {
-                    "name": "Inbound",
-                    "stop": [{"tag": "5651"}],
-                },
-            ],
         }
     }