Add Kira component to sensor and remote platforms (#7479)

* Add Kira component to sensor and remote platforms

* Test cases for Kira component and platforms

tests/components/sensor/test_kira.py

@@ -0,0 +1,59 @@
+"""The tests for Kira sensor platform."""
+import unittest
+from unittest.mock import MagicMock
+
+from homeassistant.components.sensor import kira 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'
+}
+
+
+class TestKiraSensor(unittest.TestCase):
+    """Tests the Kira Sensor platform."""
+
+    # pylint: disable=invalid-name
+    DEVICES = []
+
+    def add_devices(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
+
+    def tearDown(self):
+        """Stop everything that was started."""
+        self.hass.stop()
+
+    # 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_devices,
+                            DISCOVERY_INFO)
+        assert len(self.DEVICES) == 1
+        sensor = self.DEVICES[0]
+
+        assert sensor.name == 'kira'
+
+        sensor.hass = self.hass
+
+        codeName = 'FAKE_CODE'
+        deviceName = 'FAKE_DEVICE'
+        codeTuple = (codeName, deviceName)
+        sensor._update_callback(codeTuple)
+
+        assert sensor.state == codeName
+        assert sensor.device_state_attributes == {kira.CONF_DEVICE: deviceName}