Add Holiday integration (#103795)

* Add Holiday integration

* Localize holiday names

* Changes based on review feedback

* Add tests

* Add device info

* Bump holidays to 0.36

* Default to Home Assistant country setting

* Update homeassistant/components/holiday/calendar.py

Co-authored-by: G Johansson <goran.johansson@shiftit.se>

* Update homeassistant/components/holiday/calendar.py

Co-authored-by: G Johansson <goran.johansson@shiftit.se>

* Update homeassistant/components/holiday/config_flow.py

Co-authored-by: G Johansson <goran.johansson@shiftit.se>

* black

* Move time

* Stop creating duplicate holiday calendars

* Set default language using python-holiday

* Use common translation

* Set _attr_name to None to fix friendly name

* Fix location

* Update homeassistant/components/holiday/__init__.py

Co-authored-by: G Johansson <goran.johansson@shiftit.se>

* Update homeassistant/components/holiday/calendar.py

Co-authored-by: G Johansson <goran.johansson@shiftit.se>

* Update homeassistant/components/holiday/calendar.py

Co-authored-by: G Johansson <goran.johansson@shiftit.se>

* Update tests/components/holiday/test_init.py

Co-authored-by: G Johansson <goran.johansson@shiftit.se>

* cleanup

* Set up the integration and test the state

* Test that configuring more than one instance is rejected

* Set default_language to user's language, fallback to country's default language

* Improve tests

* Update homeassistant/components/holiday/calendar.py

Co-authored-by: G Johansson <goran.johansson@shiftit.se>

* Cleanup

* Add next year so we don't run out

* Update tests/components/holiday/test_init.py

Co-authored-by: G Johansson <goran.johansson@shiftit.se>

* Cleanup

* Set default language in `__init__`

* Add strict typing

* Change default language: HA's language `en` is `en_US` in holidays, apart from Canada

* CONF_PROVINCE can be None

* Fix test

* Fix default_language

* Refactor tests

* Province can be None

* Add test for translated title

* Address feedback

* Address feedback

* Change test to use service call

* Address feedback

* Apply suggestions from code review

Co-authored-by: G Johansson <goran.johansson@shiftit.se>

* Changes based on review feedback

* Update homeassistant/components/holiday/calendar.py

Co-authored-by: G Johansson <goran.johansson@shiftit.se>

* Update homeassistant/components/holiday/calendar.py

Co-authored-by: G Johansson <goran.johansson@shiftit.se>

* Add a test if next event is missing

* Rebase

* Set device to service

* Remove not needed translation key

---------

Co-authored-by: G Johansson <goran.johansson@shiftit.se>

.strict-typing

@@ -152,6 +152,7 @@ homeassistant.components.hardkernel.*
 homeassistant.components.hardware.*
 homeassistant.components.here_travel_time.*
 homeassistant.components.history.*
+homeassistant.components.holiday.*
 homeassistant.components.homeassistant.exposed_entities
 homeassistant.components.homeassistant.triggers.event
 homeassistant.components.homeassistant_alerts.*

CODEOWNERS

@@ -522,6 +522,8 @@ build.json @home-assistant/supervisor
 /tests/components/hive/ @Rendili @KJonline
 /homeassistant/components/hlk_sw16/ @jameshilliard
 /tests/components/hlk_sw16/ @jameshilliard
+/homeassistant/components/holiday/ @jrieger
+/tests/components/holiday/ @jrieger
 /homeassistant/components/home_connect/ @DavidMStraub
 /tests/components/home_connect/ @DavidMStraub
 /homeassistant/components/home_plus_control/ @chemaaa

homeassistant/components/holiday/__init__.py

@@ -0,0 +1,20 @@
+"""The Holiday integration."""
+from __future__ import annotations
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import Platform
+from homeassistant.core import HomeAssistant
+
+PLATFORMS: list[Platform] = [Platform.CALENDAR]
+
+
+async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+    """Set up Holiday from a config entry."""
+    await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)
+
+    return True
+
+
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+    """Unload a config entry."""
+    return await hass.config_entries.async_unload_platforms(entry, PLATFORMS)

homeassistant/components/holiday/calendar.py

@@ -0,0 +1,134 @@
+"""Holiday Calendar."""
+from __future__ import annotations
+
+from datetime import datetime
+
+from holidays import HolidayBase, country_holidays
+
+from homeassistant.components.calendar import CalendarEntity, CalendarEvent
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import CONF_COUNTRY
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.device_registry import DeviceEntryType, DeviceInfo
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.util import dt as dt_util
+
+from .const import CONF_PROVINCE, DOMAIN
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up the Holiday Calendar config entry."""
+    country: str = config_entry.data[CONF_COUNTRY]
+    province: str | None = config_entry.data.get(CONF_PROVINCE)
+    language = hass.config.language
+
+    obj_holidays = country_holidays(
+        country,
+        subdiv=province,
+        years={dt_util.now().year, dt_util.now().year + 1},
+        language=language,
+    )
+    if language == "en":
+        for lang in obj_holidays.supported_languages:
+            if lang.startswith("en"):
+                obj_holidays = country_holidays(
+                    country,
+                    subdiv=province,
+                    years={dt_util.now().year, dt_util.now().year + 1},
+                    language=lang,
+                )
+                language = lang
+                break
+
+    async_add_entities(
+        [
+            HolidayCalendarEntity(
+                config_entry.title,
+                country,
+                province,
+                language,
+                obj_holidays,
+                config_entry.entry_id,
+            )
+        ],
+        True,
+    )
+
+
+class HolidayCalendarEntity(CalendarEntity):
+    """Representation of a Holiday Calendar element."""
+
+    _attr_has_entity_name = True
+    _attr_name = None
+
+    def __init__(
+        self,
+        name: str,
+        country: str,
+        province: str | None,
+        language: str,
+        obj_holidays: HolidayBase,
+        unique_id: str,
+    ) -> None:
+        """Initialize HolidayCalendarEntity."""
+        self._country = country
+        self._province = province
+        self._location = name
+        self._language = language
+        self._attr_unique_id = unique_id
+        self._attr_device_info = DeviceInfo(
+            identifiers={(DOMAIN, unique_id)},
+            entry_type=DeviceEntryType.SERVICE,
+            name=name,
+        )
+        self._obj_holidays = obj_holidays
+
+    @property
+    def event(self) -> CalendarEvent | None:
+        """Return the next upcoming event."""
+        next_holiday = None
+        for holiday_date, holiday_name in sorted(
+            self._obj_holidays.items(), key=lambda x: x[0]
+        ):
+            if holiday_date >= dt_util.now().date():
+                next_holiday = (holiday_date, holiday_name)
+                break
+
+        if next_holiday is None:
+            return None
+
+        return CalendarEvent(
+            summary=next_holiday[1],
+            start=next_holiday[0],
+            end=next_holiday[0],
+            location=self._location,
+        )
+
+    async def async_get_events(
+        self, hass: HomeAssistant, start_date: datetime, end_date: datetime
+    ) -> list[CalendarEvent]:
+        """Get all events in a specific time frame."""
+        obj_holidays = country_holidays(
+            self._country,
+            subdiv=self._province,
+            years=list({start_date.year, end_date.year}),
+            language=self._language,
+        )
+
+        event_list: list[CalendarEvent] = []
+
+        for holiday_date, holiday_name in obj_holidays.items():
+            if start_date.date() <= holiday_date <= end_date.date():
+                event = CalendarEvent(
+                    summary=holiday_name,
+                    start=holiday_date,
+                    end=holiday_date,
+                    location=self._location,
+                )
+                event_list.append(event)
+
+        return event_list

homeassistant/components/holiday/config_flow.py

@@ -0,0 +1,99 @@
+"""Config flow for Holiday integration."""
+from __future__ import annotations
+
+from typing import Any
+
+from babel import Locale
+from holidays import list_supported_countries
+import voluptuous as vol
+
+from homeassistant import config_entries
+from homeassistant.const import CONF_COUNTRY
+from homeassistant.data_entry_flow import FlowResult
+from homeassistant.helpers.selector import (
+    CountrySelector,
+    CountrySelectorConfig,
+    SelectSelector,
+    SelectSelectorConfig,
+    SelectSelectorMode,
+)
+
+from .const import CONF_PROVINCE, DOMAIN
+
+SUPPORTED_COUNTRIES = list_supported_countries(include_aliases=False)
+
+
+class HolidayConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
+    """Handle a config flow for Holiday."""
+
+    VERSION = 1
+
+    data: dict[str, Any] = {}
+
+    async def async_step_user(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Handle the initial step."""
+        if user_input is not None:
+            self.data = user_input
+
+            selected_country = self.data[CONF_COUNTRY]
+
+            if SUPPORTED_COUNTRIES[selected_country]:
+                return await self.async_step_province()
+
+            self._async_abort_entries_match({CONF_COUNTRY: user_input[CONF_COUNTRY]})
+
+            locale = Locale(self.hass.config.language)
+            title = locale.territories[selected_country]
+            return self.async_create_entry(title=title, data=self.data)
+
+        user_schema = vol.Schema(
+            {
+                vol.Optional(
+                    CONF_COUNTRY, default=self.hass.config.country
+                ): CountrySelector(
+                    CountrySelectorConfig(
+                        countries=list(SUPPORTED_COUNTRIES),
+                    )
+                ),
+            }
+        )
+
+        return self.async_show_form(step_id="user", data_schema=user_schema)
+
+    async def async_step_province(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Handle the province step."""
+        if user_input is not None:
+            combined_input: dict[str, Any] = {**self.data, **user_input}
+
+            country = combined_input[CONF_COUNTRY]
+            province = combined_input.get(CONF_PROVINCE)
+
+            self._async_abort_entries_match(
+                {
+                    CONF_COUNTRY: country,
+                    CONF_PROVINCE: province,
+                }
+            )
+
+            locale = Locale(self.hass.config.language)
+            province_str = f", {province}" if province else ""
+            name = f"{locale.territories[country]}{province_str}"
+
+            return self.async_create_entry(title=name, data=combined_input)
+
+        province_schema = vol.Schema(
+            {
+                vol.Optional(CONF_PROVINCE): SelectSelector(
+                    SelectSelectorConfig(
+                        options=SUPPORTED_COUNTRIES[self.data[CONF_COUNTRY]],
+                        mode=SelectSelectorMode.DROPDOWN,
+                    )
+                ),
+            }
+        )
+
+        return self.async_show_form(step_id="province", data_schema=province_schema)

homeassistant/components/holiday/const.py

@@ -0,0 +1,6 @@
+"""Constants for the Holiday integration."""
+from typing import Final
+
+DOMAIN: Final = "holiday"
+
+CONF_PROVINCE: Final = "province"

homeassistant/components/holiday/manifest.json

@@ -0,0 +1,9 @@
+{
+  "domain": "holiday",
+  "name": "Holiday",
+  "codeowners": ["@jrieger"],
+  "config_flow": true,
+  "documentation": "https://www.home-assistant.io/integrations/holiday",
+  "iot_class": "local_polling",
+  "requirements": ["holidays==0.37", "babel==2.13.1"]
+}

homeassistant/components/holiday/strings.json

@@ -0,0 +1,19 @@
+{
+  "config": {
+    "abort": {
+      "already_configured": "Already configured. Only a single configuration for country/province combination possible."
+    },
+    "step": {
+      "user": {
+        "data": {
+          "country": "Country"
+        }
+      },
+      "province": {
+        "data": {
+          "province": "Province"
+        }
+      }
+    }
+  }
+}

homeassistant/generated/config_flows.py

@@ -201,6 +201,7 @@ FLOWS = {
         "hisense_aehw4a1",
         "hive",
         "hlk_sw16",
+        "holiday",
         "home_connect",
         "home_plus_control",
         "homeassistant_sky_connect",

homeassistant/generated/integrations.json

@@ -2408,6 +2408,12 @@
       "config_flow": true,
       "iot_class": "local_push"
     },
+    "holiday": {
+      "name": "Holiday",
+      "integration_type": "hub",
+      "config_flow": true,
+      "iot_class": "local_polling"
+    },
     "home_connect": {
       "name": "Home Connect",
       "integration_type": "hub",

mypy.ini

@@ -1281,6 +1281,16 @@ disallow_untyped_defs = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.holiday.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.homeassistant.exposed_entities]
 check_untyped_defs = true
 disallow_incomplete_defs = true

requirements_all.txt

@@ -504,6 +504,9 @@ azure-eventhub==5.11.1
 # homeassistant.components.azure_service_bus
 azure-servicebus==7.10.0
 
+# homeassistant.components.holiday
+babel==2.13.1
+
 # homeassistant.components.baidu
 baidu-aip==1.6.6
 
@@ -1013,6 +1016,7 @@ hlk-sw16==0.0.9
 # homeassistant.components.pi_hole
 hole==0.8.0
 
+# homeassistant.components.holiday
 # homeassistant.components.workday
 holidays==0.37
 

requirements_test_all.txt

@@ -438,6 +438,9 @@ axis==48
 # homeassistant.components.azure_event_hub
 azure-eventhub==5.11.1
 
+# homeassistant.components.holiday
+babel==2.13.1
+
 # homeassistant.components.homekit
 base36==0.1.1
 
@@ -800,6 +803,7 @@ hlk-sw16==0.0.9
 # homeassistant.components.pi_hole
 hole==0.8.0
 
+# homeassistant.components.holiday
 # homeassistant.components.workday
 holidays==0.37
 

tests/components/holiday/__init__.py

@@ -0,0 +1 @@
+"""Tests for the Holiday integration."""

tests/components/holiday/conftest.py

@@ -0,0 +1,14 @@
+"""Common fixtures for the Holiday tests."""
+from collections.abc import Generator
+from unittest.mock import AsyncMock, patch
+
+import pytest
+
+
+@pytest.fixture
+def mock_setup_entry() -> Generator[AsyncMock, None, None]:
+    """Override async_setup_entry."""
+    with patch(
+        "homeassistant.components.holiday.async_setup_entry", return_value=True
+    ) as mock_setup_entry:
+        yield mock_setup_entry

tests/components/holiday/test_calendar.py

@@ -0,0 +1,229 @@
+"""Tests for calendar platform of Holiday integration."""
+from datetime import datetime, timedelta
+
+from freezegun.api import FrozenDateTimeFactory
+
+from homeassistant.components.calendar import (
+    DOMAIN as CALENDAR_DOMAIN,
+    SERVICE_GET_EVENTS,
+)
+from homeassistant.components.holiday.const import CONF_PROVINCE, DOMAIN
+from homeassistant.const import CONF_COUNTRY
+from homeassistant.core import HomeAssistant
+from homeassistant.setup import async_setup_component
+from homeassistant.util import dt as dt_util
+
+from tests.common import MockConfigEntry, async_fire_time_changed
+
+
+async def test_holiday_calendar_entity(
+    hass: HomeAssistant,
+    freezer: FrozenDateTimeFactory,
+) -> None:
+    """Test HolidayCalendarEntity functionality."""
+    freezer.move_to(datetime(2023, 1, 1, 12, tzinfo=dt_util.UTC))
+
+    config_entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={CONF_COUNTRY: "US", CONF_PROVINCE: "AK"},
+        title="United States, AK",
+    )
+    config_entry.add_to_hass(hass)
+
+    await hass.config_entries.async_setup(config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    await async_setup_component(hass, "calendar", {})
+    await hass.async_block_till_done()
+
+    response = await hass.services.async_call(
+        CALENDAR_DOMAIN,
+        SERVICE_GET_EVENTS,
+        {
+            "entity_id": "calendar.united_states_ak",
+            "end_date_time": dt_util.now(),
+        },
+        blocking=True,
+        return_response=True,
+    )
+    assert response == {
+        "calendar.united_states_ak": {
+            "events": [
+                {
+                    "start": "2023-01-01",
+                    "end": "2023-01-02",
+                    "summary": "New Year's Day",
+                    "location": "United States, AK",
+                }
+            ]
+        }
+    }
+
+    state = hass.states.get("calendar.united_states_ak")
+    assert state is not None
+    assert state.state == "on"
+
+    # Test holidays for the next year
+    freezer.move_to(datetime(2023, 12, 31, 12, tzinfo=dt_util.UTC))
+
+    response = await hass.services.async_call(
+        CALENDAR_DOMAIN,
+        SERVICE_GET_EVENTS,
+        {
+            "entity_id": "calendar.united_states_ak",
+            "end_date_time": dt_util.now() + timedelta(days=1),
+        },
+        blocking=True,
+        return_response=True,
+    )
+    assert response == {
+        "calendar.united_states_ak": {
+            "events": [
+                {
+                    "start": "2024-01-01",
+                    "end": "2024-01-02",
+                    "summary": "New Year's Day",
+                    "location": "United States, AK",
+                }
+            ]
+        }
+    }
+
+
+async def test_default_language(
+    hass: HomeAssistant,
+    freezer: FrozenDateTimeFactory,
+) -> None:
+    """Test default language."""
+    freezer.move_to(datetime(2023, 1, 1, 12, tzinfo=dt_util.UTC))
+
+    config_entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={CONF_COUNTRY: "FR", CONF_PROVINCE: "BL"},
+        title="France, BL",
+    )
+    config_entry.add_to_hass(hass)
+
+    await hass.config_entries.async_setup(config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    # Test French calendar with English language
+    response = await hass.services.async_call(
+        CALENDAR_DOMAIN,
+        SERVICE_GET_EVENTS,
+        {
+            "entity_id": "calendar.france_bl",
+            "end_date_time": dt_util.now(),
+        },
+        blocking=True,
+        return_response=True,
+    )
+    assert response == {
+        "calendar.france_bl": {
+            "events": [
+                {
+                    "start": "2023-01-01",
+                    "end": "2023-01-02",
+                    "summary": "New Year's Day",
+                    "location": "France, BL",
+                }
+            ]
+        }
+    }
+
+    # Test French calendar with French language
+    hass.config.language = "fr"
+
+    await hass.config_entries.async_reload(config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    response = await hass.services.async_call(
+        CALENDAR_DOMAIN,
+        SERVICE_GET_EVENTS,
+        {
+            "entity_id": "calendar.france_bl",
+            "end_date_time": dt_util.now(),
+        },
+        blocking=True,
+        return_response=True,
+    )
+    assert response == {
+        "calendar.france_bl": {
+            "events": [
+                {
+                    "start": "2023-01-01",
+                    "end": "2023-01-02",
+                    "summary": "Jour de l'an",
+                    "location": "France, BL",
+                }
+            ]
+        }
+    }
+
+
+async def test_no_language(
+    hass: HomeAssistant,
+    freezer: FrozenDateTimeFactory,
+) -> None:
+    """Test language defaults to English if language not exist."""
+    freezer.move_to(datetime(2023, 1, 1, 12, tzinfo=dt_util.UTC))
+
+    config_entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={CONF_COUNTRY: "AL"},
+        title="Albania",
+    )
+    config_entry.add_to_hass(hass)
+
+    await hass.config_entries.async_setup(config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    response = await hass.services.async_call(
+        CALENDAR_DOMAIN,
+        SERVICE_GET_EVENTS,
+        {
+            "entity_id": "calendar.albania",
+            "end_date_time": dt_util.now(),
+        },
+        blocking=True,
+        return_response=True,
+    )
+    assert response == {
+        "calendar.albania": {
+            "events": [
+                {
+                    "start": "2023-01-01",
+                    "end": "2023-01-02",
+                    "summary": "New Year's Day",
+                    "location": "Albania",
+                }
+            ]
+        }
+    }
+
+
+async def test_no_next_event(
+    hass: HomeAssistant,
+    freezer: FrozenDateTimeFactory,
+) -> None:
+    """Test if there is no next event."""
+    freezer.move_to(datetime(2023, 1, 1, 12, tzinfo=dt_util.UTC))
+
+    config_entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={CONF_COUNTRY: "DE"},
+        title="Germany",
+    )
+    config_entry.add_to_hass(hass)
+
+    await hass.config_entries.async_setup(config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    # Move time to out of reach
+    freezer.move_to(datetime(dt_util.now().year + 5, 1, 1, 12, tzinfo=dt_util.UTC))
+    async_fire_time_changed(hass)
+
+    state = hass.states.get("calendar.germany")
+    assert state is not None
+    assert state.state == "off"
+    assert state.attributes == {"friendly_name": "Germany"}

tests/components/holiday/test_config_flow.py

@@ -0,0 +1,128 @@
+"""Test the Holiday config flow."""
+from unittest.mock import AsyncMock
+
+import pytest
+
+from homeassistant import config_entries
+from homeassistant.components.holiday.const import CONF_PROVINCE, DOMAIN
+from homeassistant.const import CONF_COUNTRY
+from homeassistant.core import HomeAssistant
+from homeassistant.data_entry_flow import FlowResultType
+
+from tests.common import MockConfigEntry
+
+pytestmark = pytest.mark.usefixtures("mock_setup_entry")
+
+
+async def test_form(hass: HomeAssistant, mock_setup_entry: AsyncMock) -> None:
+    """Test we get the form."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+    assert result["type"] == FlowResultType.FORM
+
+    result2 = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        {
+            CONF_COUNTRY: "DE",
+        },
+    )
+    await hass.async_block_till_done()
+
+    assert result2["type"] == FlowResultType.FORM
+
+    result3 = await hass.config_entries.flow.async_configure(
+        result2["flow_id"],
+        {
+            CONF_PROVINCE: "BW",
+        },
+    )
+    await hass.async_block_till_done()
+
+    assert result3["type"] == FlowResultType.CREATE_ENTRY
+    assert result3["title"] == "Germany, BW"
+    assert result3["data"] == {
+        "country": "DE",
+        "province": "BW",
+    }
+    assert len(mock_setup_entry.mock_calls) == 1
+
+
+async def test_form_no_subdivision(hass: HomeAssistant) -> None:
+    """Test we get the forms correctly without subdivision."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+    assert result["type"] == FlowResultType.FORM
+
+    result2 = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        {
+            CONF_COUNTRY: "SE",
+        },
+    )
+    await hass.async_block_till_done()
+
+    assert result2["type"] == FlowResultType.CREATE_ENTRY
+    assert result2["title"] == "Sweden"
+    assert result2["data"] == {
+        "country": "SE",
+    }
+
+
+async def test_form_translated_title(hass: HomeAssistant) -> None:
+    """Test the title gets translated."""
+    hass.config.language = "de"
+
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    result2 = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        {
+            CONF_COUNTRY: "SE",
+        },
+    )
+    await hass.async_block_till_done()
+
+    assert result2["title"] == "Schweden"
+
+
+async def test_single_combination_country_province(hass: HomeAssistant) -> None:
+    """Test that configuring more than one instance is rejected."""
+    data_de = {
+        CONF_COUNTRY: "DE",
+        CONF_PROVINCE: "BW",
+    }
+    data_se = {
+        CONF_COUNTRY: "SE",
+    }
+    MockConfigEntry(domain=DOMAIN, data=data_de).add_to_hass(hass)
+    MockConfigEntry(domain=DOMAIN, data=data_se).add_to_hass(hass)
+
+    # Test for country without subdivisions
+    result_se = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": config_entries.SOURCE_USER},
+        data=data_se,
+    )
+    assert result_se["type"] == FlowResultType.ABORT
+    assert result_se["reason"] == "already_configured"
+
+    # Test for country with subdivisions
+    result_de_step1 = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": config_entries.SOURCE_USER},
+        data=data_de,
+    )
+    assert result_de_step1["type"] == FlowResultType.FORM
+
+    result_de_step2 = await hass.config_entries.flow.async_configure(
+        result_de_step1["flow_id"],
+        {
+            CONF_PROVINCE: data_de[CONF_PROVINCE],
+        },
+    )
+    assert result_de_step2["type"] == FlowResultType.ABORT
+    assert result_de_step2["reason"] == "already_configured"

tests/components/holiday/test_init.py

@@ -0,0 +1,29 @@
+"""Tests for the Holiday integration."""
+
+from homeassistant.components.holiday.const import DOMAIN
+from homeassistant.config_entries import ConfigEntryState
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+
+MOCK_CONFIG_DATA = {
+    "country": "Germany",
+    "province": "BW",
+}
+
+
+async def test_unload_entry(hass: HomeAssistant) -> None:
+    """Test removing integration."""
+    entry = MockConfigEntry(domain=DOMAIN, data=MOCK_CONFIG_DATA)
+    entry.add_to_hass(hass)
+
+    await hass.config_entries.async_setup(entry.entry_id)
+    await hass.async_block_till_done()
+
+    assert entry.state == ConfigEntryState.LOADED
+
+    assert await hass.config_entries.async_unload(entry.entry_id)
+    await hass.async_block_till_done()
+
+    state: ConfigEntryState = entry.state
+    assert state == ConfigEntryState.NOT_LOADED