diff --git a/tests/components/filter/test_sensor.py b/tests/components/filter/test_sensor.py
index b440ac7889b..bb01b5b4c5c 100644
--- a/tests/components/filter/test_sensor.py
+++ b/tests/components/filter/test_sensor.py
@@ -21,9 +21,11 @@ from homeassistant.components.sensor import (
 )
 from homeassistant.const import (
     ATTR_DEVICE_CLASS,
+    ATTR_UNIT_OF_MEASUREMENT,
     SERVICE_RELOAD,
     STATE_UNAVAILABLE,
     STATE_UNKNOWN,
+    UnitOfTemperature,
 )
 import homeassistant.core as ha
 from homeassistant.helpers import entity_registry as er
@@ -263,6 +265,7 @@ async def test_setup(recorder_mock, hass):
             {
                 "icon": "mdi:test",
                 ATTR_DEVICE_CLASS: SensorDeviceClass.TEMPERATURE,
+                ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.CELSIUS,
                 ATTR_STATE_CLASS: SensorStateClass.TOTAL_INCREASING,
             },
         )
diff --git a/tests/components/integration/test_sensor.py b/tests/components/integration/test_sensor.py
index 8999c1f8d04..9cc1bbb2692 100644
--- a/tests/components/integration/test_sensor.py
+++ b/tests/components/integration/test_sensor.py
@@ -15,6 +15,7 @@ from homeassistant.const import (
     STATE_UNKNOWN,
     TIME_HOURS,
     TIME_SECONDS,
+    UnitOfPower,
 )
 from homeassistant.core import HomeAssistant, State
 from homeassistant.setup import async_setup_component
@@ -422,16 +423,26 @@ async def test_device_class(hass):
     # include states of None and Unknown
     hass.states.async_set(entity_id, STATE_UNKNOWN, {})
     await hass.async_block_till_done()
-    hass.states.async_set(entity_id, 100, {"device_class": None})
+    hass.states.async_set(
+        entity_id, 100, {"device_class": None, "unit_of_measurement": None}
+    )
     await hass.async_block_till_done()
-    hass.states.async_set(entity_id, 200, {"device_class": None})
+    hass.states.async_set(
+        entity_id, 200, {"device_class": None, "unit_of_measurement": None}
+    )
     await hass.async_block_till_done()
 
     state = hass.states.get("sensor.integration")
     assert "device_class" not in state.attributes
 
     hass.states.async_set(
-        entity_id, 300, {"device_class": SensorDeviceClass.POWER}, force_update=True
+        entity_id,
+        300,
+        {
+            "device_class": SensorDeviceClass.POWER,
+            "unit_of_measurement": UnitOfPower.WATT,
+        },
+        force_update=True,
     )
     await hass.async_block_till_done()
 
diff --git a/tests/components/rest/test_sensor.py b/tests/components/rest/test_sensor.py
index 50c8c6677b5..db55df4ff16 100644
--- a/tests/components/rest/test_sensor.py
+++ b/tests/components/rest/test_sensor.py
@@ -902,7 +902,7 @@ async def test_entity_config(hass: HomeAssistant) -> None:
             "name": "{{'REST' + ' ' + 'Sensor'}}",
             "state_class": "measurement",
             "unique_id": "very_unique",
-            "unit_of_measurement": "beardsecond",
+            "unit_of_measurement": "°C",
         },
     }
 
@@ -921,5 +921,5 @@ async def test_entity_config(hass: HomeAssistant) -> None:
         "friendly_name": "REST Sensor",
         "icon": "mdi:one_two_three",
         "state_class": "measurement",
-        "unit_of_measurement": "beardsecond",
+        "unit_of_measurement": "°C",
     }
diff --git a/tests/components/snmp/test_sensor.py b/tests/components/snmp/test_sensor.py
index e34c2a1baaf..965bc0d3ae9 100644
--- a/tests/components/snmp/test_sensor.py
+++ b/tests/components/snmp/test_sensor.py
@@ -60,7 +60,7 @@ async def test_entity_config(hass: HomeAssistant) -> None:
             "name": "{{'SNMP' + ' ' + 'Sensor'}}",
             "state_class": "measurement",
             "unique_id": "very_unique",
-            "unit_of_measurement": "beardsecond",
+            "unit_of_measurement": "°C",
         },
     }
 
@@ -78,5 +78,5 @@ async def test_entity_config(hass: HomeAssistant) -> None:
         "friendly_name": "SNMP Sensor",
         "icon": "mdi:one_two_three",
         "state_class": "measurement",
-        "unit_of_measurement": "beardsecond",
+        "unit_of_measurement": "°C",
     }
diff --git a/tests/components/template/test_sensor.py b/tests/components/template/test_sensor.py
index 44fa96cfc6a..19d43f08d2b 100644
--- a/tests/components/template/test_sensor.py
+++ b/tests/components/template/test_sensor.py
@@ -292,6 +292,7 @@ async def test_template_attribute_missing(hass, start_ha):
                 "sensors": {
                     "test1": {
                         "value_template": "{{ states.sensor.test_sensor.state }}",
+                        "unit_of_measurement": "°C",
                         "device_class": "temperature",
                     },
                     "test2": {
diff --git a/tests/testing_config/custom_components/test/sensor.py b/tests/testing_config/custom_components/test/sensor.py
index c7ca9a76005..9ec56ad23f6 100644
--- a/tests/testing_config/custom_components/test/sensor.py
+++ b/tests/testing_config/custom_components/test/sensor.py
@@ -70,7 +70,7 @@ def init(empty=False):
                 name=f"{device_class} sensor",
                 unique_id=f"unique_{device_class}",
                 device_class=device_class,
-                unit_of_measurement=UNITS_OF_MEASUREMENT.get(device_class),
+                native_unit_of_measurement=UNITS_OF_MEASUREMENT.get(device_class),
             )
             for device_class in DEVICE_CLASSES
         }