diff --git a/tests/components/kira/test_remote.py b/tests/components/kira/test_remote.py
index e91cbaca891..03268200077 100644
--- a/tests/components/kira/test_remote.py
+++ b/tests/components/kira/test_remote.py
@@ -1,48 +1,38 @@
 """The tests for Kira sensor platform."""
-import unittest
 from unittest.mock import MagicMock
 
 from homeassistant.components.kira import remote as kira
 
-from tests.common import get_test_home_assistant
-
 SERVICE_SEND_COMMAND = "send_command"
 
 TEST_CONFIG = {kira.DOMAIN: {"devices": [{"host": "127.0.0.1", "port": 17324}]}}
 
 DISCOVERY_INFO = {"name": "kira", "device": "kira"}
 
+DEVICES = []
 
-class TestKiraSensor(unittest.TestCase):
-    """Tests the Kira Sensor platform."""
 
-    # pylint: disable=invalid-name
-    DEVICES = []
+def add_entities(devices):
+    """Mock add devices."""
+    for device in devices:
+        DEVICES.append(device)
 
-    def add_entities(self, devices):
-        """Mock add devices."""
-        for device in devices:
-            self.DEVICES.append(device)
 
-    def setUp(self):
-        """Initialize values for this testcase class."""
-        self.hass = get_test_home_assistant()
-        self.mock_kira = MagicMock()
-        self.hass.data[kira.DOMAIN] = {kira.CONF_REMOTE: {}}
-        self.hass.data[kira.DOMAIN][kira.CONF_REMOTE]["kira"] = self.mock_kira
-        self.addCleanup(self.hass.stop)
+def test_service_call(hass):
+    """Test Kira's ability to send commands."""
+    mock_kira = MagicMock()
+    hass.data[kira.DOMAIN] = {kira.CONF_REMOTE: {}}
+    hass.data[kira.DOMAIN][kira.CONF_REMOTE]["kira"] = mock_kira
 
-    def test_service_call(self):
-        """Test Kira's ability to send commands."""
-        kira.setup_platform(self.hass, TEST_CONFIG, self.add_entities, DISCOVERY_INFO)
-        assert len(self.DEVICES) == 1
-        remote = self.DEVICES[0]
+    kira.setup_platform(hass, TEST_CONFIG, add_entities, DISCOVERY_INFO)
+    assert len(DEVICES) == 1
+    remote = DEVICES[0]
 
-        assert remote.name == "kira"
+    assert remote.name == "kira"
 
-        command = ["FAKE_COMMAND"]
-        device = "FAKE_DEVICE"
-        commandTuple = (command[0], device)
-        remote.send_command(device=device, command=command)
+    command = ["FAKE_COMMAND"]
+    device = "FAKE_DEVICE"
+    commandTuple = (command[0], device)
+    remote.send_command(device=device, command=command)
 
-        self.mock_kira.sendCode.assert_called_with(commandTuple)
+    mock_kira.sendCode.assert_called_with(commandTuple)
diff --git a/tests/components/kira/test_sensor.py b/tests/components/kira/test_sensor.py
index b835a25ae90..f0c771fbda0 100644
--- a/tests/components/kira/test_sensor.py
+++ b/tests/components/kira/test_sensor.py
@@ -1,50 +1,42 @@
 """The tests for Kira sensor platform."""
-import unittest
-from unittest.mock import MagicMock
+from unittest.mock import MagicMock, patch
 
 from homeassistant.components.kira import sensor as kira
 
-from tests.common import get_test_home_assistant
-
 TEST_CONFIG = {kira.DOMAIN: {"sensors": [{"host": "127.0.0.1", "port": 17324}]}}
 
 DISCOVERY_INFO = {"name": "kira", "device": "kira"}
 
+DEVICES = []
 
-class TestKiraSensor(unittest.TestCase):
-    """Tests the Kira Sensor platform."""
 
-    # pylint: disable=invalid-name
-    DEVICES = []
+def add_entities(devices):
+    """Mock add devices."""
+    for device in devices:
+        DEVICES.append(device)
 
-    def add_entities(self, devices):
-        """Mock add devices."""
-        for device in devices:
-            self.DEVICES.append(device)
 
-    def setUp(self):
-        """Initialize values for this testcase class."""
-        self.hass = get_test_home_assistant()
-        mock_kira = MagicMock()
-        self.hass.data[kira.DOMAIN] = {kira.CONF_SENSOR: {}}
-        self.hass.data[kira.DOMAIN][kira.CONF_SENSOR]["kira"] = mock_kira
-        self.addCleanup(self.hass.stop)
+@patch("homeassistant.components.kira.sensor.KiraReceiver.schedule_update_ha_state")
+def test_kira_sensor_callback(mock_schedule_update_ha_state, hass):
+    """Ensure Kira sensor properly updates its attributes from callback."""
+    mock_kira = MagicMock()
+    hass.data[kira.DOMAIN] = {kira.CONF_SENSOR: {}}
+    hass.data[kira.DOMAIN][kira.CONF_SENSOR]["kira"] = mock_kira
 
-    # pylint: disable=protected-access
-    def test_kira_sensor_callback(self):
-        """Ensure Kira sensor properly updates its attributes from callback."""
-        kira.setup_platform(self.hass, TEST_CONFIG, self.add_entities, DISCOVERY_INFO)
-        assert len(self.DEVICES) == 1
-        sensor = self.DEVICES[0]
+    kira.setup_platform(hass, TEST_CONFIG, add_entities, DISCOVERY_INFO)
+    assert len(DEVICES) == 1
+    sensor = DEVICES[0]
 
-        assert sensor.name == "kira"
+    assert sensor.name == "kira"
 
-        sensor.hass = self.hass
+    sensor.hass = hass
 
-        codeName = "FAKE_CODE"
-        deviceName = "FAKE_DEVICE"
-        codeTuple = (codeName, deviceName)
-        sensor._update_callback(codeTuple)
+    codeName = "FAKE_CODE"
+    deviceName = "FAKE_DEVICE"
+    codeTuple = (codeName, deviceName)
+    sensor._update_callback(codeTuple)
 
-        assert sensor.state == codeName
-        assert sensor.extra_state_attributes == {kira.CONF_DEVICE: deviceName}
+    mock_schedule_update_ha_state.assert_called
+
+    assert sensor.state == codeName
+    assert sensor.extra_state_attributes == {kira.CONF_DEVICE: deviceName}