Add Smart Meter B Route integration (#123446)

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

.strict-typing

@@ -443,6 +443,7 @@ homeassistant.components.rituals_perfume_genie.*
 homeassistant.components.roborock.*
 homeassistant.components.roku.*
 homeassistant.components.romy.*
+homeassistant.components.route_b_smart_meter.*
 homeassistant.components.rpi_power.*
 homeassistant.components.rss_feed_template.*
 homeassistant.components.russound_rio.*

CODEOWNERS

@@ -1332,6 +1332,8 @@ build.json @home-assistant/supervisor
 /tests/components/roomba/ @pschmitt @cyr-ius @shenxn @Orhideous
 /homeassistant/components/roon/ @pavoni
 /tests/components/roon/ @pavoni
+/homeassistant/components/route_b_smart_meter/ @SeraphicRav
+/tests/components/route_b_smart_meter/ @SeraphicRav
 /homeassistant/components/rpi_power/ @shenxn @swetoast
 /tests/components/rpi_power/ @shenxn @swetoast
 /homeassistant/components/rss_feed_template/ @home-assistant/core

homeassistant/components/route_b_smart_meter/__init__.py

@@ -0,0 +1,28 @@
+"""The Smart Meter B Route integration."""
+
+import logging
+
+from homeassistant.const import Platform
+from homeassistant.core import HomeAssistant
+
+from .coordinator import BRouteConfigEntry, BRouteUpdateCoordinator
+
+_LOGGER = logging.getLogger(__name__)
+PLATFORMS: list[Platform] = [Platform.SENSOR]
+
+
+async def async_setup_entry(hass: HomeAssistant, entry: BRouteConfigEntry) -> bool:
+    """Set up Smart Meter B Route from a config entry."""
+
+    coordinator = BRouteUpdateCoordinator(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: BRouteConfigEntry) -> bool:
+    """Unload a config entry."""
+    await hass.async_add_executor_job(entry.runtime_data.api.close)
+    return await hass.config_entries.async_unload_platforms(entry, PLATFORMS)

homeassistant/components/route_b_smart_meter/config_flow.py

@@ -0,0 +1,116 @@
+"""Config flow for Smart Meter B Route integration."""
+
+import logging
+from typing import Any
+
+from momonga import Momonga, MomongaSkJoinFailure, MomongaSkScanFailure
+from serial.tools.list_ports import comports
+from serial.tools.list_ports_common import ListPortInfo
+import voluptuous as vol
+
+from homeassistant.components.usb import get_serial_by_id, human_readable_device_name
+from homeassistant.config_entries import ConfigFlow, ConfigFlowResult
+from homeassistant.const import CONF_DEVICE, CONF_ID, CONF_PASSWORD
+from homeassistant.core import callback
+from homeassistant.helpers.service_info.usb import UsbServiceInfo
+
+from .const import DOMAIN, ENTRY_TITLE
+
+_LOGGER = logging.getLogger(__name__)
+
+
+def _validate_input(device: str, id: str, password: str) -> None:
+    """Validate the user input allows us to connect."""
+    with Momonga(dev=device, rbid=id, pwd=password):
+        pass
+
+
+def _human_readable_device_name(port: UsbServiceInfo | ListPortInfo) -> str:
+    return human_readable_device_name(
+        port.device,
+        port.serial_number,
+        port.manufacturer,
+        port.description,
+        str(port.vid) if port.vid else None,
+        str(port.pid) if port.pid else None,
+    )
+
+
+class BRouteConfigFlow(ConfigFlow, domain=DOMAIN):
+    """Handle a config flow for Smart Meter B Route."""
+
+    VERSION = 1
+
+    device: UsbServiceInfo | None = None
+
+    @callback
+    def _get_discovered_device_id_and_name(
+        self, device_options: dict[str, ListPortInfo]
+    ) -> tuple[str | None, str | None]:
+        discovered_device_id = (
+            get_serial_by_id(self.device.device) if self.device else None
+        )
+        discovered_device = (
+            device_options.get(discovered_device_id) if discovered_device_id else None
+        )
+        discovered_device_name = (
+            _human_readable_device_name(discovered_device)
+            if discovered_device
+            else None
+        )
+        return discovered_device_id, discovered_device_name
+
+    async def _get_usb_devices(self) -> dict[str, ListPortInfo]:
+        """Return a list of available USB devices."""
+        devices = await self.hass.async_add_executor_job(comports)
+        return {get_serial_by_id(port.device): port for port in devices}
+
+    async def async_step_user(
+        self, user_input: dict[str, Any] | None = None
+    ) -> ConfigFlowResult:
+        """Handle the initial step."""
+        errors: dict[str, str] = {}
+        device_options = await self._get_usb_devices()
+        if user_input is not None:
+            try:
+                await self.hass.async_add_executor_job(
+                    _validate_input,
+                    user_input[CONF_DEVICE],
+                    user_input[CONF_ID],
+                    user_input[CONF_PASSWORD],
+                )
+            except MomongaSkScanFailure:
+                errors["base"] = "cannot_connect"
+            except MomongaSkJoinFailure:
+                errors["base"] = "invalid_auth"
+            except Exception:
+                _LOGGER.exception("Unexpected exception")
+                errors["base"] = "unknown"
+            else:
+                await self.async_set_unique_id(
+                    user_input[CONF_ID], raise_on_progress=False
+                )
+                self._abort_if_unique_id_configured()
+                return self.async_create_entry(title=ENTRY_TITLE, data=user_input)
+
+        discovered_device_id, discovered_device_name = (
+            self._get_discovered_device_id_and_name(device_options)
+        )
+        return self.async_show_form(
+            step_id="user",
+            data_schema=vol.Schema(
+                {
+                    vol.Required(CONF_DEVICE, default=discovered_device_id): vol.In(
+                        {discovered_device_id: discovered_device_name}
+                        if discovered_device_id and discovered_device_name
+                        else {
+                            name: _human_readable_device_name(device)
+                            for name, device in device_options.items()
+                        }
+                    ),
+                    vol.Required(CONF_ID): str,
+                    vol.Required(CONF_PASSWORD): str,
+                }
+            ),
+            errors=errors,
+        )

homeassistant/components/route_b_smart_meter/const.py

@@ -0,0 +1,12 @@
+"""Constants for the Smart Meter B Route integration."""
+
+from datetime import timedelta
+
+DOMAIN = "route_b_smart_meter"
+ENTRY_TITLE = "Route B Smart Meter"
+DEFAULT_SCAN_INTERVAL = timedelta(seconds=300)
+
+ATTR_API_INSTANTANEOUS_POWER = "instantaneous_power"
+ATTR_API_TOTAL_CONSUMPTION = "total_consumption"
+ATTR_API_INSTANTANEOUS_CURRENT_T_PHASE = "instantaneous_current_t_phase"
+ATTR_API_INSTANTANEOUS_CURRENT_R_PHASE = "instantaneous_current_r_phase"

homeassistant/components/route_b_smart_meter/coordinator.py

@@ -0,0 +1,75 @@
+"""DataUpdateCoordinator for the Smart Meter B-route integration."""
+
+from dataclasses import dataclass
+import logging
+
+from momonga import Momonga, MomongaError
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import CONF_DEVICE, CONF_ID, CONF_PASSWORD
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
+
+from .const import DEFAULT_SCAN_INTERVAL, DOMAIN
+
+_LOGGER = logging.getLogger(__name__)
+
+
+@dataclass
+class BRouteData:
+    """Class for data of the B Route."""
+
+    instantaneous_current_r_phase: float
+    instantaneous_current_t_phase: float
+    instantaneous_power: float
+    total_consumption: float
+
+
+type BRouteConfigEntry = ConfigEntry[BRouteUpdateCoordinator]
+
+
+class BRouteUpdateCoordinator(DataUpdateCoordinator[BRouteData]):
+    """The B Route update coordinator."""
+
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        entry: BRouteConfigEntry,
+    ) -> None:
+        """Initialize."""
+
+        self.device = entry.data[CONF_DEVICE]
+        self.bid = entry.data[CONF_ID]
+        password = entry.data[CONF_PASSWORD]
+
+        self.api = Momonga(dev=self.device, rbid=self.bid, pwd=password)
+
+        super().__init__(
+            hass,
+            _LOGGER,
+            name=DOMAIN,
+            config_entry=entry,
+            update_interval=DEFAULT_SCAN_INTERVAL,
+        )
+
+    async def _async_setup(self) -> None:
+        await self.hass.async_add_executor_job(
+            self.api.open,
+        )
+
+    def _get_data(self) -> BRouteData:
+        """Get the data from API."""
+        current = self.api.get_instantaneous_current()
+        return BRouteData(
+            instantaneous_current_r_phase=current["r phase current"],
+            instantaneous_current_t_phase=current["t phase current"],
+            instantaneous_power=self.api.get_instantaneous_power(),
+            total_consumption=self.api.get_measured_cumulative_energy(),
+        )
+
+    async def _async_update_data(self) -> BRouteData:
+        """Update data."""
+        try:
+            return await self.hass.async_add_executor_job(self._get_data)
+        except MomongaError as error:
+            raise UpdateFailed(error) from error

homeassistant/components/route_b_smart_meter/manifest.json

@@ -0,0 +1,17 @@
+{
+  "domain": "route_b_smart_meter",
+  "name": "Smart Meter B Route",
+  "codeowners": ["@SeraphicRav"],
+  "config_flow": true,
+  "dependencies": ["usb"],
+  "documentation": "https://www.home-assistant.io/integrations/route_b_smart_meter",
+  "integration_type": "device",
+  "iot_class": "local_polling",
+  "loggers": [
+    "momonga.momonga",
+    "momonga.momonga_session_manager",
+    "momonga.sk_wrapper_logger"
+  ],
+  "quality_scale": "bronze",
+  "requirements": ["pyserial==3.5", "momonga==0.1.5"]
+}

homeassistant/components/route_b_smart_meter/quality_scale.yaml

@@ -0,0 +1,82 @@
+rules:
+  # Bronze
+  action-setup:
+    status: exempt
+    comment: |
+      The integration does not provide any additional actions.
+  appropriate-polling:
+    status: done
+  brands:
+    status: exempt
+    comment: |
+      The integration is not specific to a single brand, it does not have a logo.
+  common-modules: done
+  config-flow: done
+  config-flow-test-coverage: done
+  dependency-transparency: done
+  docs-actions:
+    status: exempt
+    comment: |
+      The integration does not provide any additional actions.
+  docs-high-level-description: done
+  docs-installation-instructions: done
+  docs-removal-instructions: done
+  entity-event-setup:
+    status: exempt
+    comment: |
+      The integration does not use 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: |
+      The integration does not provide any additional actions.
+  config-entry-unloading: done
+  docs-configuration-parameters: todo
+  docs-installation-parameters: todo
+  entity-unavailable: done
+  integration-owner: done
+  log-when-unavailable: done
+  parallel-updates: todo
+  reauthentication-flow: todo
+  test-coverage: done
+
+  # Gold
+  devices: done
+  diagnostics: todo
+  discovery-update-info: done
+  discovery:
+    status: exempt
+    comment: |
+      The manufacturer does not use unique identifiers for devices.
+  docs-data-update: todo
+  docs-examples: todo
+  docs-known-limitations: todo
+  docs-supported-devices: todo
+  docs-supported-functions: todo
+  docs-troubleshooting: todo
+  docs-use-cases: todo
+  dynamic-devices: todo
+  entity-category: todo
+  entity-device-class: done
+  entity-disabled-by-default: todo
+  entity-translations: done
+  exception-translations: todo
+  icon-translations: todo
+  reconfiguration-flow: todo
+  repair-issues: todo
+  stale-devices: todo
+
+  # Platinum
+  async-dependency: todo
+  inject-websession:
+    status: exempt
+    comment: |
+      The integration does not use HTTP.
+  strict-typing: todo

homeassistant/components/route_b_smart_meter/sensor.py

@@ -0,0 +1,109 @@
+"""Smart Meter B Route."""
+
+from collections.abc import Callable
+from dataclasses import dataclass
+
+from homeassistant.components.sensor import (
+    SensorDeviceClass,
+    SensorEntity,
+    SensorEntityDescription,
+    SensorStateClass,
+)
+from homeassistant.const import UnitOfElectricCurrent, UnitOfEnergy, UnitOfPower
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.device_registry import DeviceInfo
+from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
+from homeassistant.helpers.typing import StateType
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
+
+from . import BRouteConfigEntry
+from .const import (
+    ATTR_API_INSTANTANEOUS_CURRENT_R_PHASE,
+    ATTR_API_INSTANTANEOUS_CURRENT_T_PHASE,
+    ATTR_API_INSTANTANEOUS_POWER,
+    ATTR_API_TOTAL_CONSUMPTION,
+    DOMAIN,
+)
+from .coordinator import BRouteData, BRouteUpdateCoordinator
+
+
+@dataclass(frozen=True, kw_only=True)
+class SensorEntityDescriptionWithValueAccessor(SensorEntityDescription):
+    """Sensor entity description with data accessor."""
+
+    value_accessor: Callable[[BRouteData], StateType]
+
+
+SENSOR_DESCRIPTIONS = (
+    SensorEntityDescriptionWithValueAccessor(
+        key=ATTR_API_INSTANTANEOUS_CURRENT_R_PHASE,
+        translation_key=ATTR_API_INSTANTANEOUS_CURRENT_R_PHASE,
+        device_class=SensorDeviceClass.CURRENT,
+        state_class=SensorStateClass.MEASUREMENT,
+        native_unit_of_measurement=UnitOfElectricCurrent.AMPERE,
+        value_accessor=lambda data: data.instantaneous_current_r_phase,
+    ),
+    SensorEntityDescriptionWithValueAccessor(
+        key=ATTR_API_INSTANTANEOUS_CURRENT_T_PHASE,
+        translation_key=ATTR_API_INSTANTANEOUS_CURRENT_T_PHASE,
+        device_class=SensorDeviceClass.CURRENT,
+        state_class=SensorStateClass.MEASUREMENT,
+        native_unit_of_measurement=UnitOfElectricCurrent.AMPERE,
+        value_accessor=lambda data: data.instantaneous_current_t_phase,
+    ),
+    SensorEntityDescriptionWithValueAccessor(
+        key=ATTR_API_INSTANTANEOUS_POWER,
+        translation_key=ATTR_API_INSTANTANEOUS_POWER,
+        device_class=SensorDeviceClass.POWER,
+        state_class=SensorStateClass.MEASUREMENT,
+        native_unit_of_measurement=UnitOfPower.WATT,
+        value_accessor=lambda data: data.instantaneous_power,
+    ),
+    SensorEntityDescriptionWithValueAccessor(
+        key=ATTR_API_TOTAL_CONSUMPTION,
+        translation_key=ATTR_API_TOTAL_CONSUMPTION,
+        device_class=SensorDeviceClass.ENERGY,
+        state_class=SensorStateClass.TOTAL,
+        native_unit_of_measurement=UnitOfEnergy.KILO_WATT_HOUR,
+        value_accessor=lambda data: data.total_consumption,
+    ),
+)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: BRouteConfigEntry,
+    async_add_entities: AddConfigEntryEntitiesCallback,
+) -> None:
+    """Set up Smart Meter B-route entry."""
+    coordinator = entry.runtime_data
+
+    async_add_entities(
+        SmartMeterBRouteSensor(coordinator, description)
+        for description in SENSOR_DESCRIPTIONS
+    )
+
+
+class SmartMeterBRouteSensor(CoordinatorEntity[BRouteUpdateCoordinator], SensorEntity):
+    """Representation of a Smart Meter B-route sensor entity."""
+
+    _attr_has_entity_name = True
+
+    def __init__(
+        self,
+        coordinator: BRouteUpdateCoordinator,
+        description: SensorEntityDescriptionWithValueAccessor,
+    ) -> None:
+        """Initialize Smart Meter B-route sensor entity."""
+        super().__init__(coordinator)
+        self.entity_description: SensorEntityDescriptionWithValueAccessor = description
+        self._attr_unique_id = f"{coordinator.bid}_{description.key}"
+        self._attr_device_info = DeviceInfo(
+            identifiers={(DOMAIN, coordinator.bid)},
+            name=f"Route B Smart Meter {coordinator.bid}",
+        )
+
+    @property
+    def native_value(self) -> StateType:
+        """Return the state of the sensor."""
+        return self.entity_description.value_accessor(self.coordinator.data)

homeassistant/components/route_b_smart_meter/strings.json

@@ -0,0 +1,42 @@
+{
+  "config": {
+    "step": {
+      "user": {
+        "data_description": {
+          "device": "[%key:common::config_flow::data::device%]",
+          "id": "B Route ID",
+          "password": "[%key:common::config_flow::data::password%]"
+        },
+        "data": {
+          "device": "[%key:common::config_flow::data::device%]",
+          "id": "B Route ID",
+          "password": "[%key:common::config_flow::data::password%]"
+        }
+      }
+    },
+    "error": {
+      "cannot_connect": "[%key:common::config_flow::error::cannot_connect%]",
+      "invalid_auth": "[%key:common::config_flow::error::invalid_auth%]",
+      "unknown": "[%key:common::config_flow::error::unknown%]"
+    },
+    "abort": {
+      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]"
+    }
+  },
+  "entity": {
+    "sensor": {
+      "instantaneous_power": {
+        "name": "Instantaneous power"
+      },
+      "total_consumption": {
+        "name": "Total consumption"
+      },
+      "instantaneous_current_t_phase": {
+        "name": "Instantaneous current T phase"
+      },
+      "instantaneous_current_r_phase": {
+        "name": "Instantaneous current R phase"
+      }
+    }
+  }
+}

homeassistant/generated/config_flows.py

@@ -552,6 +552,7 @@ FLOWS = {
         "romy",
         "roomba",
         "roon",
+        "route_b_smart_meter",
         "rova",
         "rpi_power",
         "ruckus_unleashed",

homeassistant/generated/integrations.json

@@ -5637,6 +5637,12 @@
         }
       }
     },
+    "route_b_smart_meter": {
+      "name": "Smart Meter B Route",
+      "integration_type": "device",
+      "config_flow": true,
+      "iot_class": "local_polling"
+    },
     "rova": {
       "name": "ROVA",
       "integration_type": "hub",

mypy.ini

@@ -4186,6 +4186,16 @@ disallow_untyped_defs = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.route_b_smart_meter.*]
+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.rpi_power.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true

requirements_all.txt

@@ -1466,6 +1466,9 @@ moat-ble==0.1.1
 # homeassistant.components.moehlenhoff_alpha2
 moehlenhoff-alpha2==1.4.0
 
+# homeassistant.components.route_b_smart_meter
+momonga==0.1.5
+
 # homeassistant.components.monzo
 monzopy==1.5.1
 
@@ -2345,6 +2348,7 @@ pyserial-asyncio-fast==0.16
 
 # homeassistant.components.acer_projector
 # homeassistant.components.crownstone
+# homeassistant.components.route_b_smart_meter
 # homeassistant.components.usb
 # homeassistant.components.zwave_js
 pyserial==3.5

requirements_test_all.txt

@@ -1258,6 +1258,9 @@ moat-ble==0.1.1
 # homeassistant.components.moehlenhoff_alpha2
 moehlenhoff-alpha2==1.4.0
 
+# homeassistant.components.route_b_smart_meter
+momonga==0.1.5
+
 # homeassistant.components.monzo
 monzopy==1.5.1
 
@@ -1957,6 +1960,7 @@ pysensibo==1.2.1
 
 # homeassistant.components.acer_projector
 # homeassistant.components.crownstone
+# homeassistant.components.route_b_smart_meter
 # homeassistant.components.usb
 # homeassistant.components.zwave_js
 pyserial==3.5

tests/components/route_b_smart_meter/__init__.py

@@ -0,0 +1 @@
+"""Tests for the Smart Meter B-route integration."""

tests/components/route_b_smart_meter/conftest.py

@@ -0,0 +1,72 @@
+"""Common fixtures for the Smart Meter B-route tests."""
+
+from collections.abc import Generator
+from unittest.mock import AsyncMock, Mock, patch
+
+import pytest
+
+from homeassistant.components.route_b_smart_meter.const import DOMAIN
+from homeassistant.const import CONF_DEVICE, CONF_ID, CONF_PASSWORD
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+
+
+@pytest.fixture
+def mock_setup_entry() -> Generator[AsyncMock]:
+    """Override async_setup_entry."""
+    with patch(
+        "homeassistant.components.route_b_smart_meter.async_setup_entry",
+        return_value=True,
+    ) as mock:
+        yield mock
+
+
+@pytest.fixture
+def mock_momonga(exception=None) -> Generator[Mock]:
+    """Mock for Momonga class."""
+
+    with (
+        patch(
+            "homeassistant.components.route_b_smart_meter.coordinator.Momonga",
+        ) as mock_momonga,
+        patch(
+            "homeassistant.components.route_b_smart_meter.config_flow.Momonga",
+            new=mock_momonga,
+        ),
+    ):
+        client = mock_momonga.return_value
+        client.__enter__.return_value = client
+        client.__exit__.return_value = None
+        client.get_instantaneous_current.return_value = {
+            "r phase current": 1,
+            "t phase current": 2,
+        }
+        client.get_instantaneous_power.return_value = 3
+        client.get_measured_cumulative_energy.return_value = 4
+        yield mock_momonga
+
+
+@pytest.fixture
+def user_input() -> dict[str, str]:
+    """Return test user input data."""
+    return {
+        CONF_DEVICE: "/dev/ttyUSB42",
+        CONF_ID: "01234567890123456789012345F789",
+        CONF_PASSWORD: "B_ROUTE_PASSWORD",
+    }
+
+
+@pytest.fixture
+def mock_config_entry(
+    hass: HomeAssistant, user_input: dict[str, str]
+) -> MockConfigEntry:
+    """Create a mock config entry."""
+    entry = MockConfigEntry(
+        domain=DOMAIN,
+        data=user_input,
+        entry_id="01234567890123456789012345F789",
+        unique_id="123456",
+    )
+    entry.add_to_hass(hass)
+    return entry

tests/components/route_b_smart_meter/snapshots/test_sensor.ambr

@@ -0,0 +1,225 @@
+# serializer version: 1
+# name: test_route_b_smart_meter_sensor_update[sensor.route_b_smart_meter_01234567890123456789012345f789_instantaneous_current_r_phase-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.route_b_smart_meter_01234567890123456789012345f789_instantaneous_current_r_phase',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+      'sensor': dict({
+        'suggested_display_precision': 2,
+      }),
+    }),
+    'original_device_class': <SensorDeviceClass.CURRENT: 'current'>,
+    'original_icon': None,
+    'original_name': 'Instantaneous current R phase',
+    'platform': 'route_b_smart_meter',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'instantaneous_current_r_phase',
+    'unique_id': '01234567890123456789012345F789_instantaneous_current_r_phase',
+    'unit_of_measurement': <UnitOfElectricCurrent.AMPERE: 'A'>,
+  })
+# ---
+# name: test_route_b_smart_meter_sensor_update[sensor.route_b_smart_meter_01234567890123456789012345f789_instantaneous_current_r_phase-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'current',
+      'friendly_name': 'Route B Smart Meter 01234567890123456789012345F789 Instantaneous current R phase',
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+      'unit_of_measurement': <UnitOfElectricCurrent.AMPERE: 'A'>,
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.route_b_smart_meter_01234567890123456789012345f789_instantaneous_current_r_phase',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '1',
+  })
+# ---
+# name: test_route_b_smart_meter_sensor_update[sensor.route_b_smart_meter_01234567890123456789012345f789_instantaneous_current_t_phase-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.route_b_smart_meter_01234567890123456789012345f789_instantaneous_current_t_phase',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+      'sensor': dict({
+        'suggested_display_precision': 2,
+      }),
+    }),
+    'original_device_class': <SensorDeviceClass.CURRENT: 'current'>,
+    'original_icon': None,
+    'original_name': 'Instantaneous current T phase',
+    'platform': 'route_b_smart_meter',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'instantaneous_current_t_phase',
+    'unique_id': '01234567890123456789012345F789_instantaneous_current_t_phase',
+    'unit_of_measurement': <UnitOfElectricCurrent.AMPERE: 'A'>,
+  })
+# ---
+# name: test_route_b_smart_meter_sensor_update[sensor.route_b_smart_meter_01234567890123456789012345f789_instantaneous_current_t_phase-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'current',
+      'friendly_name': 'Route B Smart Meter 01234567890123456789012345F789 Instantaneous current T phase',
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+      'unit_of_measurement': <UnitOfElectricCurrent.AMPERE: 'A'>,
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.route_b_smart_meter_01234567890123456789012345f789_instantaneous_current_t_phase',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '2',
+  })
+# ---
+# name: test_route_b_smart_meter_sensor_update[sensor.route_b_smart_meter_01234567890123456789012345f789_instantaneous_power-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.route_b_smart_meter_01234567890123456789012345f789_instantaneous_power',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+      'sensor': dict({
+        'suggested_display_precision': 0,
+      }),
+    }),
+    'original_device_class': <SensorDeviceClass.POWER: 'power'>,
+    'original_icon': None,
+    'original_name': 'Instantaneous power',
+    'platform': 'route_b_smart_meter',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'instantaneous_power',
+    'unique_id': '01234567890123456789012345F789_instantaneous_power',
+    'unit_of_measurement': <UnitOfPower.WATT: 'W'>,
+  })
+# ---
+# name: test_route_b_smart_meter_sensor_update[sensor.route_b_smart_meter_01234567890123456789012345f789_instantaneous_power-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'power',
+      'friendly_name': 'Route B Smart Meter 01234567890123456789012345F789 Instantaneous power',
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+      'unit_of_measurement': <UnitOfPower.WATT: 'W'>,
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.route_b_smart_meter_01234567890123456789012345f789_instantaneous_power',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '3',
+  })
+# ---
+# name: test_route_b_smart_meter_sensor_update[sensor.route_b_smart_meter_01234567890123456789012345f789_total_consumption-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': dict({
+      'state_class': <SensorStateClass.TOTAL: 'total'>,
+    }),
+    '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.route_b_smart_meter_01234567890123456789012345f789_total_consumption',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+      'sensor': dict({
+        'suggested_display_precision': 2,
+      }),
+    }),
+    'original_device_class': <SensorDeviceClass.ENERGY: 'energy'>,
+    'original_icon': None,
+    'original_name': 'Total consumption',
+    'platform': 'route_b_smart_meter',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'total_consumption',
+    'unique_id': '01234567890123456789012345F789_total_consumption',
+    'unit_of_measurement': <UnitOfEnergy.KILO_WATT_HOUR: 'kWh'>,
+  })
+# ---
+# name: test_route_b_smart_meter_sensor_update[sensor.route_b_smart_meter_01234567890123456789012345f789_total_consumption-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'energy',
+      'friendly_name': 'Route B Smart Meter 01234567890123456789012345F789 Total consumption',
+      'state_class': <SensorStateClass.TOTAL: 'total'>,
+      'unit_of_measurement': <UnitOfEnergy.KILO_WATT_HOUR: 'kWh'>,
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.route_b_smart_meter_01234567890123456789012345f789_total_consumption',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '4',
+  })
+# ---

tests/components/route_b_smart_meter/test_config_flow.py

@@ -0,0 +1,111 @@
+"""Test the Smart Meter B-route config flow."""
+
+from collections.abc import Generator
+from unittest.mock import AsyncMock, Mock, patch
+
+from momonga import MomongaSkJoinFailure, MomongaSkScanFailure
+import pytest
+from serial.tools.list_ports_linux import SysFS
+
+from homeassistant.components.route_b_smart_meter.const import DOMAIN, ENTRY_TITLE
+from homeassistant.config_entries import SOURCE_USER
+from homeassistant.const import CONF_DEVICE, CONF_ID, CONF_PASSWORD
+from homeassistant.core import HomeAssistant
+from homeassistant.data_entry_flow import FlowResultType
+
+
+@pytest.fixture
+def mock_comports() -> Generator[AsyncMock]:
+    """Override comports."""
+    device = SysFS("/dev/ttyUSB42")
+    device.vid = 0x1234
+    device.pid = 0x5678
+    device.serial_number = "123456"
+    device.manufacturer = "Test"
+    device.description = "Test Device"
+
+    with patch(
+        "homeassistant.components.route_b_smart_meter.config_flow.comports",
+        return_value=[SysFS("/dev/ttyUSB41"), device],
+    ) as mock:
+        yield mock
+
+
+async def test_step_user_form(
+    hass: HomeAssistant,
+    mock_setup_entry: AsyncMock,
+    mock_comports: AsyncMock,
+    mock_momonga: Mock,
+    user_input: dict[str, str],
+) -> None:
+    """Test we get the form."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": SOURCE_USER}
+    )
+    assert result["type"] is FlowResultType.FORM
+    assert not result["errors"]
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        user_input,
+    )
+    await hass.async_block_till_done()
+
+    assert result["type"] is FlowResultType.CREATE_ENTRY
+    assert result["title"] == ENTRY_TITLE
+    assert result["data"] == user_input
+    assert result["result"].unique_id == user_input[CONF_ID]
+    mock_setup_entry.assert_called_once()
+    mock_comports.assert_called()
+    mock_momonga.assert_called_once_with(
+        dev=user_input[CONF_DEVICE],
+        rbid=user_input[CONF_ID],
+        pwd=user_input[CONF_PASSWORD],
+    )
+
+
+@pytest.mark.parametrize(
+    ("error", "message"),
+    [
+        (MomongaSkJoinFailure, "invalid_auth"),
+        (MomongaSkScanFailure, "cannot_connect"),
+        (Exception, "unknown"),
+    ],
+)
+async def test_step_user_form_errors(
+    hass: HomeAssistant,
+    error: Exception,
+    message: str,
+    mock_setup_entry: AsyncMock,
+    mock_comports: AsyncMock,
+    mock_momonga: AsyncMock,
+    user_input: dict[str, str],
+) -> None:
+    """Test we handle error."""
+    result_init = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": SOURCE_USER}
+    )
+    mock_momonga.side_effect = error
+    result_configure = await hass.config_entries.flow.async_configure(
+        result_init["flow_id"],
+        user_input,
+    )
+
+    assert result_configure["type"] is FlowResultType.FORM
+    assert result_configure["errors"] == {"base": message}
+    await hass.async_block_till_done()
+    mock_comports.assert_called()
+    mock_momonga.assert_called_once_with(
+        dev=user_input[CONF_DEVICE],
+        rbid=user_input[CONF_ID],
+        pwd=user_input[CONF_PASSWORD],
+    )
+
+    mock_momonga.side_effect = None
+    result = await hass.config_entries.flow.async_configure(
+        result_configure["flow_id"],
+        user_input,
+    )
+
+    assert result["type"] is FlowResultType.CREATE_ENTRY
+    assert result["title"] == ENTRY_TITLE
+    assert result["data"] == user_input

tests/components/route_b_smart_meter/test_init.py

@@ -0,0 +1,19 @@
+"""Tests for the Smart Meter B Route integration init."""
+
+from homeassistant.config_entries import ConfigEntryState
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+
+
+async def test_async_setup_entry_success(
+    hass: HomeAssistant, mock_momonga, mock_config_entry: MockConfigEntry
+) -> None:
+    """Test successful setup of entry."""
+    await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+    assert mock_config_entry.state is ConfigEntryState.LOADED
+
+    assert await hass.config_entries.async_unload(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+    assert mock_config_entry.state is ConfigEntryState.NOT_LOADED

tests/components/route_b_smart_meter/test_sensor.py

@@ -0,0 +1,55 @@
+"""Tests for the Smart Meter B-Route sensor."""
+
+from unittest.mock import Mock
+
+from freezegun.api import FrozenDateTimeFactory
+from momonga import MomongaError
+from syrupy.assertion import SnapshotAssertion
+
+from homeassistant.components.route_b_smart_meter.const import DEFAULT_SCAN_INTERVAL
+from homeassistant.const import STATE_UNAVAILABLE
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_registry import EntityRegistry
+
+from tests.common import MockConfigEntry, async_fire_time_changed, snapshot_platform
+
+
+async def test_route_b_smart_meter_sensor_update(
+    hass: HomeAssistant,
+    mock_momonga: Mock,
+    freezer: FrozenDateTimeFactory,
+    entity_registry: EntityRegistry,
+    snapshot: SnapshotAssertion,
+    mock_config_entry: MockConfigEntry,
+) -> None:
+    """Test the BRouteUpdateCoordinator successful behavior."""
+    await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+    freezer.tick(DEFAULT_SCAN_INTERVAL)
+    async_fire_time_changed(hass)
+    await hass.async_block_till_done(wait_background_tasks=True)
+    await snapshot_platform(hass, entity_registry, snapshot, mock_config_entry.entry_id)
+
+
+async def test_route_b_smart_meter_sensor_no_update(
+    hass: HomeAssistant,
+    mock_momonga: Mock,
+    freezer: FrozenDateTimeFactory,
+    mock_config_entry: MockConfigEntry,
+) -> None:
+    """Test the BRouteUpdateCoordinator when failing."""
+
+    entity_id = "sensor.route_b_smart_meter_01234567890123456789012345f789_instantaneous_current_r_phase"
+    await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    entity = hass.states.get(entity_id)
+    assert entity.state == "1"
+
+    mock_momonga.return_value.get_instantaneous_current.side_effect = MomongaError
+    freezer.tick(DEFAULT_SCAN_INTERVAL)
+    async_fire_time_changed(hass)
+    await hass.async_block_till_done(wait_background_tasks=True)
+
+    entity = hass.states.get(entity_id)
+    assert entity.state is STATE_UNAVAILABLE