Add install to Tessie update platform (#106352)

tests/components/tessie/test_update.py

@@ -1,5 +1,12 @@
 """Test the Tessie update platform."""
-from homeassistant.const import STATE_ON
+from unittest.mock import patch
+
+from homeassistant.components.update import (
+    ATTR_IN_PROGRESS,
+    DOMAIN as UPDATE_DOMAIN,
+    SERVICE_INSTALL,
+)
+from homeassistant.const import ATTR_ENTITY_ID, STATE_ON
 from homeassistant.core import HomeAssistant
 
 from .common import setup_platform
@@ -14,4 +21,22 @@ async def test_updates(hass: HomeAssistant) -> None:
 
     assert len(hass.states.async_all("update")) == 1
 
-    assert hass.states.get("update.test").state == STATE_ON
+    entity_id = "update.test"
+    state = hass.states.get(entity_id)
+    assert state.state == STATE_ON
+    assert state.attributes.get(ATTR_IN_PROGRESS) is False
+
+    with patch(
+        "homeassistant.components.tessie.update.schedule_software_update"
+    ) as mock_update:
+        await hass.services.async_call(
+            UPDATE_DOMAIN,
+            SERVICE_INSTALL,
+            {ATTR_ENTITY_ID: [entity_id]},
+            blocking=True,
+        )
+        mock_update.assert_called_once()
+
+    state = hass.states.get(entity_id)
+    assert state.state == STATE_ON
+    assert state.attributes.get(ATTR_IN_PROGRESS) == 1