Fix midnight bug

Fix #38

custom_components/irm_kmi/coordinator.py

@@ -275,8 +275,8 @@ class IrmKmiCoordinator(TimestampDataUpdateCoordinator):
         forecasts = list()
         day = datetime.now(tz=pytz.timezone('Europe/Brussels')).replace(hour=0, minute=0, second=0, microsecond=0)
 
-        for f in data:
+        for idx, f in enumerate(data):
-            if 'dateShow' in f:
+            if 'dateShow' in f and idx > 0:
                 day = day + timedelta(days=1)
 
             hour = f.get('hour', None)

tests/test_coordinator.py

@@ -141,6 +141,57 @@ def test_hourly_forecast() -> None:
     assert result[8] == expected
 
 
+@freeze_time(datetime.fromisoformat('2024-05-31T01:50:00+02:00'))
+def test_hourly_forecast_bis() -> None:
+    api_data = get_api_data("no-midnight-bug-31-05-2024T01-55.json").get('for', {}).get('hourly')
+    result = IrmKmiCoordinator.hourly_list_to_forecast(api_data)
+
+    assert isinstance(result, list)
+
+    times = ['2024-05-31T01:00:00+02:00', '2024-05-31T02:00:00+02:00', '2024-05-31T03:00:00+02:00',
+             '2024-05-31T04:00:00+02:00', '2024-05-31T05:00:00+02:00', '2024-05-31T06:00:00+02:00',
+             '2024-05-31T07:00:00+02:00', '2024-05-31T08:00:00+02:00', '2024-05-31T09:00:00+02:00']
+
+    actual = [f['datetime'] for f in result[:9]]
+
+    assert actual == times
+
+
+@freeze_time(datetime.fromisoformat('2024-05-31T00:10:00+02:00'))
+def test_hourly_forecast_midnight_bug() -> None:
+    # Related to https://github.com/jdejaegh/irm-kmi-ha/issues/38
+    api_data = get_api_data("midnight-bug-31-05-2024T00-13.json").get('for', {}).get('hourly')
+    result = IrmKmiCoordinator.hourly_list_to_forecast(api_data)
+
+    assert isinstance(result, list)
+
+    first = Forecast(
+        datetime='2024-05-31T00:00:00+02:00',
+        condition=ATTR_CONDITION_CLOUDY,
+        native_precipitation=0,
+        native_temperature=14,
+        native_templow=None,
+        native_wind_gust_speed=None,
+        native_wind_speed=10,
+        precipitation_probability=0,
+        wind_bearing=293,
+        native_pressure=1010,
+        is_daytime=False
+    )
+
+    assert result[0] == first
+
+    times = ['2024-05-31T00:00:00+02:00', '2024-05-31T01:00:00+02:00', '2024-05-31T02:00:00+02:00',
+             '2024-05-31T03:00:00+02:00', '2024-05-31T04:00:00+02:00', '2024-05-31T05:00:00+02:00',
+             '2024-05-31T06:00:00+02:00', '2024-05-31T07:00:00+02:00', '2024-05-31T08:00:00+02:00']
+
+    actual = [f['datetime'] for f in result[:9]]
+
+    assert actual == times
+
+    assert result[24]['datetime'] == '2024-06-01T00:00:00+02:00'
+
+
 async def test_refresh_succeed_even_when_pollen_and_radar_fail(
         hass: HomeAssistant,
         mock_config_entry: MockConfigEntry,