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12 changes: 10 additions & 2 deletions homeassistant/components/utility_meter/sensor.py
Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,11 @@

import voluptuous as vol

from homeassistant.components.sensor import STATE_CLASS_MEASUREMENT, SensorEntity
from homeassistant.components.sensor import (
STATE_CLASS_MEASUREMENT,
STATE_CLASS_TOTAL_INCREASING,
SensorEntity,
)
from homeassistant.const import (
ATTR_UNIT_OF_MEASUREMENT,
CONF_NAME,
Expand Down Expand Up @@ -330,7 +334,11 @@ def device_class(self):
@property
def state_class(self):
"""Return the device class of the sensor."""
return STATE_CLASS_MEASUREMENT
return (
STATE_CLASS_MEASUREMENT
if self._sensor_net_consumption
else STATE_CLASS_TOTAL_INCREASING
)

@property
def native_unit_of_measurement(self):
Expand Down
11 changes: 8 additions & 3 deletions tests/components/utility_meter/test_sensor.py
Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,11 @@
from datetime import timedelta
from unittest.mock import patch

from homeassistant.components.sensor import ATTR_STATE_CLASS, STATE_CLASS_MEASUREMENT
from homeassistant.components.sensor import (
ATTR_STATE_CLASS,
STATE_CLASS_MEASUREMENT,
STATE_CLASS_TOTAL_INCREASING,
)
from homeassistant.components.utility_meter.const import (
ATTR_TARIFF,
ATTR_VALUE,
Expand Down Expand Up @@ -165,6 +169,7 @@ async def test_device_class(hass):
"utility_meter": {
"energy_meter": {
"source": "sensor.energy",
"net_consumption": True,
},
"gas_meter": {
"source": "sensor.gas",
Expand Down Expand Up @@ -197,7 +202,7 @@ async def test_device_class(hass):
assert state is not None
assert state.state == "0"
assert state.attributes.get(ATTR_DEVICE_CLASS) is None
assert state.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_MEASUREMENT
assert state.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_TOTAL_INCREASING
assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) is None

hass.states.async_set(
Expand All @@ -219,7 +224,7 @@ async def test_device_class(hass):
assert state is not None
assert state.state == "1"
assert state.attributes.get(ATTR_DEVICE_CLASS) is None
assert state.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_MEASUREMENT
assert state.attributes.get(ATTR_STATE_CLASS) == STATE_CLASS_TOTAL_INCREASING
assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == "some_archaic_unit"


Expand Down