Embed all platforms into components (#20677)

* Consolidate all components with platforms

* Organize tests

* Fix more tests

* Fix Verisure tests

* one final test fix

* Add change

* Fix coverage

homeassistant/components/ihc/sensor.py

@@ -0,0 +1,60 @@
+"""IHC sensor platform.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/sensor.ihc/
+"""
+from homeassistant.components.ihc import (
+    IHC_DATA, IHC_CONTROLLER, IHC_INFO)
+from homeassistant.components.ihc.ihcdevice import IHCDevice
+from homeassistant.const import (
+    CONF_UNIT_OF_MEASUREMENT)
+from homeassistant.helpers.entity import Entity
+
+DEPENDENCIES = ['ihc']
+
+
+def setup_platform(hass, config, add_entities, discovery_info=None):
+    """Set up the IHC sensor platform."""
+    if discovery_info is None:
+        return
+    devices = []
+    for name, device in discovery_info.items():
+        ihc_id = device['ihc_id']
+        product_cfg = device['product_cfg']
+        product = device['product']
+        # Find controller that corresponds with device id
+        ctrl_id = device['ctrl_id']
+        ihc_key = IHC_DATA.format(ctrl_id)
+        info = hass.data[ihc_key][IHC_INFO]
+        ihc_controller = hass.data[ihc_key][IHC_CONTROLLER]
+        unit = product_cfg[CONF_UNIT_OF_MEASUREMENT]
+        sensor = IHCSensor(ihc_controller, name, ihc_id, info,
+                           unit, product)
+        devices.append(sensor)
+    add_entities(devices)
+
+
+class IHCSensor(IHCDevice, Entity):
+    """Implementation of the IHC sensor."""
+
+    def __init__(self, ihc_controller, name, ihc_id: int, info: bool,
+                 unit, product=None) -> None:
+        """Initialize the IHC sensor."""
+        super().__init__(ihc_controller, name, ihc_id, info, product)
+        self._state = None
+        self._unit_of_measurement = unit
+
+    @property
+    def state(self):
+        """Return the state of the sensor."""
+        return self._state
+
+    @property
+    def unit_of_measurement(self):
+        """Return the unit of measurement of this entity, if any."""
+        return self._unit_of_measurement
+
+    def on_ihc_change(self, ihc_id, value):
+        """Handle IHC resource change."""
+        self._state = value
+        self.schedule_update_ha_state()