Add sensor platform to Tailscale (#60751)

Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

tests/components/tailscale/test_sensor.py

@@ -0,0 +1,41 @@
+"""Tests for the sensors provided by the Tailscale integration."""
+from homeassistant.components.sensor import SensorDeviceClass
+from homeassistant.components.tailscale.const import DOMAIN
+from homeassistant.const import ATTR_DEVICE_CLASS, ATTR_FRIENDLY_NAME, ATTR_ICON
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import device_registry as dr, entity_registry as er
+
+from tests.common import MockConfigEntry
+
+
+async def test_tailscale_sensors(
+    hass: HomeAssistant,
+    init_integration: MockConfigEntry,
+) -> None:
+    """Test the Tailscale sensors."""
+    entity_registry = er.async_get(hass)
+    device_registry = dr.async_get(hass)
+
+    state = hass.states.get("sensor.router_expires")
+    entry = entity_registry.async_get("sensor.router_expires")
+    assert entry
+    assert state
+    assert entry.unique_id == "123457_expires"
+    assert state.state == "2022-02-25T09:49:06+00:00"
+    assert state.attributes.get(ATTR_FRIENDLY_NAME) == "router Expires"
+    assert state.attributes.get(ATTR_DEVICE_CLASS) == SensorDeviceClass.TIMESTAMP
+    assert ATTR_ICON not in state.attributes
+
+    assert entry.device_id
+    device_entry = device_registry.async_get(entry.device_id)
+    assert device_entry
+    assert device_entry.identifiers == {(DOMAIN, "123457")}
+    assert device_entry.manufacturer == "Tailscale Inc."
+    assert device_entry.model == "linux"
+    assert device_entry.name == "router"
+    assert device_entry.entry_type == dr.DeviceEntryType.SERVICE
+    assert device_entry.sw_version == "1.14.0-t5cff36945-g809e87bba"
+    assert (
+        device_entry.configuration_url
+        == "https://login.tailscale.com/admin/machines/100.11.11.112"
+    )