Tilt Pi integration (#139726)

* Create component via script.scaffold

* Create sensor definition

* Define coordinator

* Define config flow

* Refine sensor definition and add tests

* Refine coordinator after testing end to end

* Redefine sensor in a more idiomatic way

* Use entity (common-module)

* Follow config-flow conventions more closely

* Use custom ConfigEntry to conform to strict-typing

* Define API object instead of using aio directly

* Test before setup in init

* Add diagnostics

* Make some more quality changes

* Move scan interval to const

* Commit generated files

* Add quality scale

* feedback: Apply consistent language to Tilt Pi refs

* feedback: Remove empty manifest fields

* feedback: Use translations instead of hardcoded name

* feedback: Remove diagnostics

* feedback: Idiomatic and general improvements

* Use tilt-pi library

* feedback: Coordinator data returns dict

* feedback: Move client creation to coordinator

* feedback: Request only Tilt Pi URL from user

* Update homeassistant/components/tilt_pi/entity.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Update homeassistant/components/tilt_pi/sensor.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Update homeassistant/components/tilt_pi/entity.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* feedback: Avoid redundant keyword arguments in function calls

* feedback: Remove unused models and variables

* feedback: Use icons.json

* feedback: Style best practices

* Update homeassistant/components/tilt_pi/entity.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Update tests/components/tilt_pi/test_config_flow.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* feedback: Improve config flow unit tests

* feedback: Patch TiltPi client mock

* feedback: Mark entity-device-class as done

* feedback: Align quaity scale with current state

* feeback: Create brands file for Tilt brand

* feedback: Demonstrate recovery in config flow

* feedback: Test coordinator behavior via sensors

* Update homeassistant/components/tilt_pi/config_flow.py

Co-authored-by: Josef Zweck <josef@zweck.dev>

* Update homeassistant/components/tilt_pi/coordinator.py

Co-authored-by: Josef Zweck <josef@zweck.dev>

* Update homeassistant/components/tilt_pi/quality_scale.yaml

Co-authored-by: Josef Zweck <josef@zweck.dev>

* Update homeassistant/components/tilt_pi/quality_scale.yaml

Co-authored-by: Josef Zweck <josef@zweck.dev>

* Update homeassistant/components/tilt_pi/quality_scale.yaml

Co-authored-by: Josef Zweck <josef@zweck.dev>

* Update homeassistant/components/tilt_pi/config_flow.py

Co-authored-by: Josef Zweck <josef@zweck.dev>

* feedback: Update tilt_pi quality scale

* feedback: Move const to coordinator

* feedback: Correct strings.json for incorrect and missing fields

* feedback: Use tiltpi package version published via CI

* Run ruff format manually

* Add missing string for invalid host

* Fix

* Fix

---------

Co-authored-by: Michael Heyman <michaelheyman@users.noreply.github.com>
Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>
Co-authored-by: Josef Zweck <josef@zweck.dev>

CODEOWNERS

@@ -1580,6 +1580,8 @@ build.json @home-assistant/supervisor
 /tests/components/tile/ @bachya
 /homeassistant/components/tilt_ble/ @apt-itude
 /tests/components/tilt_ble/ @apt-itude
+/homeassistant/components/tilt_pi/ @michaelheyman
+/tests/components/tilt_pi/ @michaelheyman
 /homeassistant/components/time/ @home-assistant/core
 /tests/components/time/ @home-assistant/core
 /homeassistant/components/time_date/ @fabaff

homeassistant/brands/tilt.json

@@ -0,0 +1,5 @@
+{
+  "domain": "tilt",
+  "name": "Tilt",
+  "integrations": ["tilt_ble", "tilt_pi"]
+}

homeassistant/components/tilt_pi/__init__.py

@@ -0,0 +1,28 @@
+"""The Tilt Pi integration."""
+
+from homeassistant.const import Platform
+from homeassistant.core import HomeAssistant
+
+from .coordinator import TiltPiConfigEntry, TiltPiDataUpdateCoordinator
+
+PLATFORMS: list[Platform] = [Platform.SENSOR]
+
+
+async def async_setup_entry(hass: HomeAssistant, entry: TiltPiConfigEntry) -> bool:
+    """Set up Tilt Pi from a config entry."""
+    coordinator = TiltPiDataUpdateCoordinator(
+        hass,
+        entry,
+    )
+
+    await coordinator.async_config_entry_first_refresh()
+    entry.runtime_data = coordinator
+
+    await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)
+
+    return True
+
+
+async def async_unload_entry(hass: HomeAssistant, entry: TiltPiConfigEntry) -> bool:
+    """Unload a config entry."""
+    return await hass.config_entries.async_unload_platforms(entry, PLATFORMS)

homeassistant/components/tilt_pi/config_flow.py

@@ -0,0 +1,63 @@
+"""Config flow for Tilt Pi integration."""
+
+from typing import Any
+
+import aiohttp
+from tiltpi import TiltPiClient, TiltPiError
+import voluptuous as vol
+from yarl import URL
+
+from homeassistant.config_entries import ConfigFlow, ConfigFlowResult
+from homeassistant.const import CONF_HOST, CONF_PORT, CONF_URL
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
+
+from .const import DOMAIN
+
+
+class TiltPiConfigFlow(ConfigFlow, domain=DOMAIN):
+    """Handle a config flow for Tilt Pi."""
+
+    async def _check_connection(self, host: str, port: int) -> str | None:
+        """Check if we can connect to the TiltPi instance."""
+        client = TiltPiClient(
+            host,
+            port,
+            session=async_get_clientsession(self.hass),
+        )
+        try:
+            await client.get_hydrometers()
+        except (TiltPiError, TimeoutError, aiohttp.ClientError):
+            return "cannot_connect"
+        return None
+
+    async def async_step_user(
+        self, user_input: dict[str, Any] | None = None
+    ) -> ConfigFlowResult:
+        """Handle a configuration flow initialized by the user."""
+
+        errors = {}
+        if user_input is not None:
+            url = URL(user_input[CONF_URL])
+            if (host := url.host) is None:
+                errors[CONF_URL] = "invalid_host"
+            else:
+                self._async_abort_entries_match({CONF_HOST: host})
+                port = url.port
+                assert port
+                error = await self._check_connection(host=host, port=port)
+                if error:
+                    errors["base"] = error
+                else:
+                    return self.async_create_entry(
+                        title="Tilt Pi",
+                        data={
+                            CONF_HOST: host,
+                            CONF_PORT: port,
+                        },
+                    )
+
+        return self.async_show_form(
+            step_id="user",
+            data_schema=vol.Schema({vol.Required(CONF_URL): str}),
+            errors=errors,
+        )

homeassistant/components/tilt_pi/const.py

@@ -0,0 +1,8 @@
+"""Constants for the Tilt Pi integration."""
+
+import logging
+from typing import Final
+
+LOGGER = logging.getLogger(__package__)
+
+DOMAIN: Final = "tilt_pi"

homeassistant/components/tilt_pi/coordinator.py

@@ -0,0 +1,53 @@
+"""Data update coordinator for Tilt Pi."""
+
+from datetime import timedelta
+from typing import Final
+
+from tiltpi import TiltHydrometerData, TiltPiClient, TiltPiError
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import CONF_HOST, CONF_PORT
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
+from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
+
+from .const import LOGGER
+
+SCAN_INTERVAL: Final = timedelta(seconds=60)
+
+type TiltPiConfigEntry = ConfigEntry[TiltPiDataUpdateCoordinator]
+
+
+class TiltPiDataUpdateCoordinator(DataUpdateCoordinator[dict[str, TiltHydrometerData]]):
+    """Class to manage fetching Tilt Pi data."""
+
+    config_entry: TiltPiConfigEntry
+
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        config_entry: TiltPiConfigEntry,
+    ) -> None:
+        """Initialize the coordinator."""
+        super().__init__(
+            hass,
+            LOGGER,
+            config_entry=config_entry,
+            name="Tilt Pi",
+            update_interval=SCAN_INTERVAL,
+        )
+        self._api = TiltPiClient(
+            host=config_entry.data[CONF_HOST],
+            port=config_entry.data[CONF_PORT],
+            session=async_get_clientsession(hass),
+        )
+        self.identifier = config_entry.entry_id
+
+    async def _async_update_data(self) -> dict[str, TiltHydrometerData]:
+        """Fetch data from Tilt Pi and return as a dict keyed by mac_id."""
+        try:
+            hydrometers = await self._api.get_hydrometers()
+        except TiltPiError as err:
+            raise UpdateFailed(f"Error communicating with Tilt Pi: {err}") from err
+
+        return {h.mac_id: h for h in hydrometers}

homeassistant/components/tilt_pi/entity.py

@@ -0,0 +1,39 @@
+"""Base entity for Tilt Pi integration."""
+
+from tiltpi import TiltHydrometerData
+
+from homeassistant.helpers.device_registry import CONNECTION_NETWORK_MAC, DeviceInfo
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
+
+from .coordinator import TiltPiDataUpdateCoordinator
+
+
+class TiltEntity(CoordinatorEntity[TiltPiDataUpdateCoordinator]):
+    """Base class for Tilt entities."""
+
+    _attr_has_entity_name = True
+
+    def __init__(
+        self,
+        coordinator: TiltPiDataUpdateCoordinator,
+        hydrometer: TiltHydrometerData,
+    ) -> None:
+        """Initialize the entity."""
+        super().__init__(coordinator)
+        self._mac_id = hydrometer.mac_id
+        self._attr_device_info = DeviceInfo(
+            connections={(CONNECTION_NETWORK_MAC, hydrometer.mac_id)},
+            name=f"Tilt {hydrometer.color}",
+            manufacturer="Tilt Hydrometer",
+            model=f"{hydrometer.color} Tilt Hydrometer",
+        )
+
+    @property
+    def current_hydrometer(self) -> TiltHydrometerData:
+        """Return the current hydrometer data for this entity."""
+        return self.coordinator.data[self._mac_id]
+
+    @property
+    def available(self) -> bool:
+        """Return True if the hydrometer is available (present in coordinator data)."""
+        return super().available and self._mac_id in self.coordinator.data

homeassistant/components/tilt_pi/icons.json

@@ -0,0 +1,9 @@
+{
+  "entity": {
+    "sensor": {
+      "gravity": {
+        "default": "mdi:water"
+      }
+    }
+  }
+}

homeassistant/components/tilt_pi/manifest.json

@@ -0,0 +1,10 @@
+{
+  "domain": "tilt_pi",
+  "name": "Tilt Pi",
+  "codeowners": ["@michaelheyman"],
+  "config_flow": true,
+  "documentation": "https://www.home-assistant.io/integrations/tilt_pi",
+  "iot_class": "local_polling",
+  "quality_scale": "bronze",
+  "requirements": ["tilt-pi==0.2.1"]
+}

homeassistant/components/tilt_pi/quality_scale.yaml

@@ -0,0 +1,80 @@
+rules:
+  # Bronze
+  action-setup: done
+  appropriate-polling: done
+  brands: done
+  common-modules: done
+  config-flow-test-coverage: done
+  config-flow: done
+  dependency-transparency: done
+  docs-actions:
+    status: exempt
+    comment: |
+      This integration does not provide additional actions.
+  docs-high-level-description: done
+  docs-installation-instructions: done
+  docs-removal-instructions: done
+  entity-event-setup:
+    status: exempt
+    comment: |
+      Entities of this integration does not explicitly subscribe to events.
+  entity-unique-id: done
+  has-entity-name: done
+  runtime-data: done
+  test-before-configure: done
+  test-before-setup: done
+  unique-config-entry: done
+
+  # Silver
+  action-exceptions:
+    status: exempt
+    comment: |
+      No custom actions are defined.
+  config-entry-unloading: done
+  docs-configuration-parameters:
+    status: exempt
+    comment: No options to configure
+  docs-installation-parameters: done
+  entity-unavailable: done
+  integration-owner: done
+  log-when-unavailable: done
+  parallel-updates: done
+  reauthentication-flow:
+    status: exempt
+    comment: |
+      This integration does not require authentication.
+  test-coverage: done
+  # Gold
+  devices: done
+  diagnostics: todo
+  discovery-update-info: todo
+  discovery: todo
+  docs-data-update: todo
+  docs-examples: todo
+  docs-known-limitations: done
+  docs-supported-devices: done
+  docs-supported-functions: done
+  docs-troubleshooting: todo
+  docs-use-cases: todo
+  dynamic-devices: todo
+  entity-category:
+    status: done
+    comment: |
+      The entities are categorized well by using default category.
+  entity-device-class: done
+  entity-disabled-by-default:
+    status: exempt
+    comment: No disabled entities implemented
+  entity-translations: done
+  exception-translations: todo
+  icon-translations: done
+  reconfiguration-flow: todo
+  repair-issues:
+    status: exempt
+    comment: |
+      No repairs/issues.
+  stale-devices: todo
+  # Platinum
+  async-dependency: done
+  inject-websession: done
+  strict-typing: todo

homeassistant/components/tilt_pi/sensor.py

@@ -0,0 +1,93 @@
+"""Support for Tilt Hydrometer sensors."""
+
+from collections.abc import Callable
+from dataclasses import dataclass
+from typing import Final
+
+from tiltpi import TiltHydrometerData
+
+from homeassistant.components.sensor import (
+    SensorDeviceClass,
+    SensorEntity,
+    SensorEntityDescription,
+    SensorStateClass,
+)
+from homeassistant.const import UnitOfTemperature
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
+from homeassistant.helpers.typing import StateType
+
+from .coordinator import TiltPiConfigEntry, TiltPiDataUpdateCoordinator
+from .entity import TiltEntity
+
+# Coordinator is used to centralize the data updates
+PARALLEL_UPDATES = 0
+
+ATTR_TEMPERATURE = "temperature"
+ATTR_GRAVITY = "gravity"
+
+
+@dataclass(frozen=True, kw_only=True)
+class TiltEntityDescription(SensorEntityDescription):
+    """Describes TiltHydrometerData sensor entity."""
+
+    value_fn: Callable[[TiltHydrometerData], StateType]
+
+
+SENSOR_TYPES: Final[list[TiltEntityDescription]] = [
+    TiltEntityDescription(
+        key=ATTR_TEMPERATURE,
+        device_class=SensorDeviceClass.TEMPERATURE,
+        native_unit_of_measurement=UnitOfTemperature.FAHRENHEIT,
+        state_class=SensorStateClass.MEASUREMENT,
+        value_fn=lambda data: data.temperature,
+    ),
+    TiltEntityDescription(
+        key=ATTR_GRAVITY,
+        translation_key="gravity",
+        native_unit_of_measurement="SG",
+        state_class=SensorStateClass.MEASUREMENT,
+        value_fn=lambda data: data.gravity,
+    ),
+]
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: TiltPiConfigEntry,
+    async_add_entities: AddConfigEntryEntitiesCallback,
+) -> None:
+    """Set up Tilt Hydrometer sensors."""
+    coordinator = config_entry.runtime_data
+
+    async_add_entities(
+        TiltSensor(
+            coordinator,
+            description,
+            hydrometer,
+        )
+        for description in SENSOR_TYPES
+        for hydrometer in coordinator.data.values()
+    )
+
+
+class TiltSensor(TiltEntity, SensorEntity):
+    """Defines a Tilt sensor."""
+
+    entity_description: TiltEntityDescription
+
+    def __init__(
+        self,
+        coordinator: TiltPiDataUpdateCoordinator,
+        description: TiltEntityDescription,
+        hydrometer: TiltHydrometerData,
+    ) -> None:
+        """Initialize the sensor."""
+        super().__init__(coordinator, hydrometer)
+        self.entity_description = description
+        self._attr_unique_id = f"{hydrometer.mac_id}_{description.key}"
+
+    @property
+    def native_value(self) -> StateType:
+        """Return the sensor value."""
+        return self.entity_description.value_fn(self.current_hydrometer)

homeassistant/components/tilt_pi/strings.json

@@ -0,0 +1,31 @@
+{
+  "config": {
+    "step": {
+      "confirm": {
+        "description": "[%key:common::config_flow::description::confirm_setup%]"
+      },
+      "user": {
+        "data": {
+          "url": "[%key:common::config_flow::data::url%]"
+        },
+        "data_description": {
+          "url": "The URL of the Tilt Pi instance."
+        }
+      }
+    },
+    "abort": {
+      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]"
+    },
+    "error": {
+      "cannot_connect": "[%key:common::config_flow::error::cannot_connect%]",
+      "invalid_host": "[%key:common::config_flow::error::invalid_host%]"
+    }
+  },
+  "entity": {
+    "sensor": {
+      "gravity": {
+        "name": "Gravity"
+      }
+    }
+  }
+}

homeassistant/generated/config_flows.py

@@ -647,6 +647,7 @@ FLOWS = {
         "tibber",
         "tile",
         "tilt_ble",
+        "tilt_pi",
         "time_date",
         "todoist",
         "tolo",

homeassistant/generated/integrations.json

@@ -6745,11 +6745,22 @@
       "config_flow": true,
       "iot_class": "cloud_polling"
     },
-    "tilt_ble": {
-      "name": "Tilt Hydrometer BLE",
-      "integration_type": "hub",
-      "config_flow": true,
-      "iot_class": "local_push"
+    "tilt": {
+      "name": "Tilt",
+      "integrations": {
+        "tilt_ble": {
+          "integration_type": "hub",
+          "config_flow": true,
+          "iot_class": "local_push",
+          "name": "Tilt Hydrometer BLE"
+        },
+        "tilt_pi": {
+          "integration_type": "hub",
+          "config_flow": true,
+          "iot_class": "local_polling",
+          "name": "Tilt Pi"
+        }
+      }
     },
     "time_date": {
       "integration_type": "service",

requirements_all.txt

@@ -2936,6 +2936,9 @@ tikteck==0.4
 # homeassistant.components.tilt_ble
 tilt-ble==0.2.3
 
+# homeassistant.components.tilt_pi
+tilt-pi==0.2.1
+
 # homeassistant.components.tmb
 tmb==0.0.4
 

requirements_test_all.txt

@@ -2413,6 +2413,9 @@ thinqconnect==1.0.5
 # homeassistant.components.tilt_ble
 tilt-ble==0.2.3
 
+# homeassistant.components.tilt_pi
+tilt-pi==0.2.1
+
 # homeassistant.components.todoist
 todoist-api-python==2.1.7
 

tests/components/tilt_pi/__init__.py

@@ -0,0 +1,12 @@
+"""Tests for the Tilt Pi integration."""
+
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+
+
+async def setup_integration(hass: HomeAssistant, config_entry: MockConfigEntry) -> None:
+    """Fixture for setting up the integration."""
+    config_entry.add_to_hass(hass)
+
+    await hass.config_entries.async_setup(config_entry.entry_id)

tests/components/tilt_pi/conftest.py

@@ -0,0 +1,70 @@
+"""Common fixtures for the Tilt Pi tests."""
+
+from collections.abc import Generator
+from unittest.mock import AsyncMock, patch
+
+import pytest
+from tiltpi import TiltColor, TiltHydrometerData
+
+from homeassistant.components.tilt_pi.const import DOMAIN
+from homeassistant.const import CONF_HOST, CONF_PORT
+
+from tests.common import MockConfigEntry
+
+TEST_NAME = "Test Tilt Pi"
+TEST_HOST = "192.168.1.123"
+TEST_PORT = 1880
+TEST_URL = f"http://{TEST_HOST}:{TEST_PORT}"
+
+
+@pytest.fixture
+def mock_setup_entry() -> Generator[AsyncMock]:
+    """Override async_setup_entry."""
+    with patch(
+        "homeassistant.components.tilt_pi.async_setup_entry",
+        return_value=True,
+    ) as mock_setup_entry:
+        yield mock_setup_entry
+
+
+@pytest.fixture
+def mock_config_entry() -> MockConfigEntry:
+    """Return the default mocked config entry."""
+    return MockConfigEntry(
+        domain=DOMAIN,
+        data={
+            CONF_HOST: TEST_HOST,
+            CONF_PORT: TEST_PORT,
+        },
+    )
+
+
+@pytest.fixture
+def mock_tiltpi_client() -> Generator[AsyncMock]:
+    """Mock a TiltPi client."""
+    with (
+        patch(
+            "homeassistant.components.tilt_pi.coordinator.TiltPiClient",
+            autospec=True,
+        ) as mock_client,
+        patch(
+            "homeassistant.components.tilt_pi.config_flow.TiltPiClient",
+            new=mock_client,
+        ),
+    ):
+        client = mock_client.return_value
+        client.get_hydrometers.return_value = [
+            TiltHydrometerData(
+                mac_id="00:1A:2B:3C:4D:5E",
+                color=TiltColor.BLACK,
+                temperature=55.0,
+                gravity=1.010,
+            ),
+            TiltHydrometerData(
+                mac_id="00:1s:99:f1:d2:4f",
+                color=TiltColor.YELLOW,
+                temperature=68.0,
+                gravity=1.015,
+            ),
+        ]
+        yield client

tests/components/tilt_pi/snapshots/test_sensor.ambr

@@ -0,0 +1,217 @@
+# serializer version: 1
+# name: test_all_sensors[sensor.tilt_black_gravity-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': dict({
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+    }),
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.tilt_black_gravity',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Gravity',
+    'platform': 'tilt_pi',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'gravity',
+    'unique_id': '00:1A:2B:3C:4D:5E_gravity',
+    'unit_of_measurement': 'SG',
+  })
+# ---
+# name: test_all_sensors[sensor.tilt_black_gravity-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'friendly_name': 'Tilt Black Gravity',
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+      'unit_of_measurement': 'SG',
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.tilt_black_gravity',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '1.01',
+  })
+# ---
+# name: test_all_sensors[sensor.tilt_black_temperature-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': dict({
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+    }),
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.tilt_black_temperature',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+      'sensor': dict({
+        'suggested_display_precision': 1,
+      }),
+    }),
+    'original_device_class': <SensorDeviceClass.TEMPERATURE: 'temperature'>,
+    'original_icon': None,
+    'original_name': 'Temperature',
+    'platform': 'tilt_pi',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': None,
+    'unique_id': '00:1A:2B:3C:4D:5E_temperature',
+    'unit_of_measurement': <UnitOfTemperature.CELSIUS: '°C'>,
+  })
+# ---
+# name: test_all_sensors[sensor.tilt_black_temperature-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'temperature',
+      'friendly_name': 'Tilt Black Temperature',
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+      'unit_of_measurement': <UnitOfTemperature.CELSIUS: '°C'>,
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.tilt_black_temperature',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '12.7777777777778',
+  })
+# ---
+# name: test_all_sensors[sensor.tilt_yellow_gravity-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': dict({
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+    }),
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.tilt_yellow_gravity',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Gravity',
+    'platform': 'tilt_pi',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'gravity',
+    'unique_id': '00:1s:99:f1:d2:4f_gravity',
+    'unit_of_measurement': 'SG',
+  })
+# ---
+# name: test_all_sensors[sensor.tilt_yellow_gravity-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'friendly_name': 'Tilt Yellow Gravity',
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+      'unit_of_measurement': 'SG',
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.tilt_yellow_gravity',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '1.015',
+  })
+# ---
+# name: test_all_sensors[sensor.tilt_yellow_temperature-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': dict({
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+    }),
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.tilt_yellow_temperature',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+      'sensor': dict({
+        'suggested_display_precision': 1,
+      }),
+    }),
+    'original_device_class': <SensorDeviceClass.TEMPERATURE: 'temperature'>,
+    'original_icon': None,
+    'original_name': 'Temperature',
+    'platform': 'tilt_pi',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': None,
+    'unique_id': '00:1s:99:f1:d2:4f_temperature',
+    'unit_of_measurement': <UnitOfTemperature.CELSIUS: '°C'>,
+  })
+# ---
+# name: test_all_sensors[sensor.tilt_yellow_temperature-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'temperature',
+      'friendly_name': 'Tilt Yellow Temperature',
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+      'unit_of_measurement': <UnitOfTemperature.CELSIUS: '°C'>,
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.tilt_yellow_temperature',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '20.0',
+  })
+# ---

tests/components/tilt_pi/test_config_flow.py

@@ -0,0 +1,125 @@
+"""Test the Tilt config flow."""
+
+from unittest.mock import AsyncMock
+
+from homeassistant.components.tilt_pi.const import DOMAIN
+from homeassistant.config_entries import SOURCE_USER
+from homeassistant.const import CONF_HOST, CONF_PORT, CONF_URL
+from homeassistant.core import HomeAssistant
+from homeassistant.data_entry_flow import FlowResultType
+
+from tests.common import MockConfigEntry
+
+
+async def test_async_step_user_gets_form_and_creates_entry(
+    hass: HomeAssistant,
+    mock_tiltpi_client: AsyncMock,
+    mock_setup_entry: AsyncMock,
+) -> None:
+    """Test that the we can view the form and that the config flow creates an entry."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": SOURCE_USER},
+    )
+    assert result["type"] is FlowResultType.FORM
+    assert result["step_id"] == "user"
+    assert result["errors"] == {}
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        user_input={CONF_URL: "http://192.168.1.123:1880"},
+    )
+
+    assert result["type"] is FlowResultType.CREATE_ENTRY
+    assert result["data"] == {
+        CONF_HOST: "192.168.1.123",
+        CONF_PORT: 1880,
+    }
+
+
+async def test_abort_if_already_configured(
+    hass: HomeAssistant,
+    mock_config_entry: MockConfigEntry,
+    mock_setup_entry: AsyncMock,
+) -> None:
+    """Test that we abort if we attempt to submit the same entry twice."""
+    mock_config_entry.add_to_hass(hass)
+
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": SOURCE_USER},
+    )
+    assert result["type"] is FlowResultType.FORM
+    assert result["step_id"] == "user"
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        user_input={CONF_URL: "http://192.168.1.123:1880"},
+    )
+
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "already_configured"
+
+
+async def test_successful_recovery_after_invalid_host(
+    hass: HomeAssistant,
+    mock_tiltpi_client: AsyncMock,
+    mock_setup_entry: AsyncMock,
+) -> None:
+    """Test error shown when user submits invalid host."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": SOURCE_USER},
+    )
+
+    # Simulate a invalid host error by providing an invalid URL
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        user_input={CONF_URL: "not-a-valid-url"},
+    )
+    assert result["type"] is FlowResultType.FORM
+    assert result["errors"] == {"url": "invalid_host"}
+
+    # Demonstrate successful connection on retry
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        user_input={CONF_URL: "http://192.168.1.123:1880"},
+    )
+    assert result["type"] is FlowResultType.CREATE_ENTRY
+    assert result["data"] == {
+        CONF_HOST: "192.168.1.123",
+        CONF_PORT: 1880,
+    }
+
+
+async def test_successful_recovery_after_connection_error(
+    hass: HomeAssistant,
+    mock_tiltpi_client: AsyncMock,
+    mock_setup_entry: AsyncMock,
+) -> None:
+    """Test error shown when connection fails."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": SOURCE_USER},
+    )
+
+    # Simulate a connection error by raising a TimeoutError
+    mock_tiltpi_client.get_hydrometers.side_effect = TimeoutError()
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        user_input={CONF_URL: "http://192.168.1.123:1880"},
+    )
+    assert result["type"] is FlowResultType.FORM
+    assert result["errors"] == {"base": "cannot_connect"}
+
+    # Simulate successful connection on retry
+    mock_tiltpi_client.get_hydrometers.side_effect = None
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        user_input={CONF_URL: "http://192.168.1.123:1880"},
+    )
+    assert result["type"] is FlowResultType.CREATE_ENTRY
+    assert result["data"] == {
+        CONF_HOST: "192.168.1.123",
+        CONF_PORT: 1880,
+    }

tests/components/tilt_pi/test_sensor.py

@@ -0,0 +1,84 @@
+"""Test the Tilt Hydrometer sensors."""
+
+from unittest.mock import AsyncMock, patch
+
+from freezegun.api import FrozenDateTimeFactory
+from syrupy.assertion import SnapshotAssertion
+from tiltpi import TiltColor, TiltPiConnectionError
+
+from homeassistant.const import STATE_UNAVAILABLE, Platform
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import entity_registry as er
+
+from . import setup_integration
+
+from tests.common import MockConfigEntry, async_fire_time_changed, snapshot_platform
+
+
+async def test_all_sensors(
+    hass: HomeAssistant,
+    mock_config_entry: MockConfigEntry,
+    mock_tiltpi_client: AsyncMock,
+    entity_registry: er.EntityRegistry,
+    snapshot: SnapshotAssertion,
+) -> None:
+    """Test the Tilt Pi sensors.
+
+    When making changes to this test, ensure that the snapshot reflects the
+    new data by generating it via:
+
+        $ pytest tests/components/tilt_pi/test_sensor.py -v --snapshot-update
+    """
+    with patch("homeassistant.components.tilt_pi.PLATFORMS", [Platform.SENSOR]):
+        await setup_integration(hass, mock_config_entry)
+
+    await snapshot_platform(hass, entity_registry, snapshot, mock_config_entry.entry_id)
+
+
+async def test_availability(
+    hass: HomeAssistant,
+    mock_config_entry: MockConfigEntry,
+    mock_tiltpi_client: AsyncMock,
+    freezer: FrozenDateTimeFactory,
+) -> None:
+    """Test that entities become unavailable when the coordinator fails."""
+    with patch("homeassistant.components.tilt_pi.PLATFORMS", [Platform.SENSOR]):
+        await setup_integration(hass, mock_config_entry)
+
+    # Simulate a coordinator update failure
+    mock_tiltpi_client.get_hydrometers.side_effect = TiltPiConnectionError()
+    freezer.tick(60)
+    async_fire_time_changed(hass)
+    await hass.async_block_till_done()
+
+    # Check that entities are unavailable
+    for color in (TiltColor.BLACK, TiltColor.YELLOW):
+        temperature_entity_id = f"sensor.tilt_{color}_temperature"
+        gravity_entity_id = f"sensor.tilt_{color}_gravity"
+
+        temperature_state = hass.states.get(temperature_entity_id)
+        assert temperature_state is not None
+        assert temperature_state.state == STATE_UNAVAILABLE
+
+        gravity_state = hass.states.get(gravity_entity_id)
+        assert gravity_state is not None
+        assert gravity_state.state == STATE_UNAVAILABLE
+
+    # Simulate a coordinator update success
+    mock_tiltpi_client.get_hydrometers.side_effect = None
+    freezer.tick(60)
+    async_fire_time_changed(hass)
+    await hass.async_block_till_done()
+
+    # Check that entities are now available
+    for color in (TiltColor.BLACK, TiltColor.YELLOW):
+        temperature_entity_id = f"sensor.tilt_{color}_temperature"
+        gravity_entity_id = f"sensor.tilt_{color}_gravity"
+
+        temperature_state = hass.states.get(temperature_entity_id)
+        assert temperature_state is not None
+        assert temperature_state.state != STATE_UNAVAILABLE
+
+        gravity_state = hass.states.get(gravity_entity_id)
+        assert gravity_state is not None
+        assert gravity_state.state != STATE_UNAVAILABLE