Add test coverage for ESPHome switch platform (#95306)

.coveragerc

@@ -314,7 +314,6 @@ omit =
     homeassistant/components/esphome/domain_data.py
     homeassistant/components/esphome/entry_data.py
     homeassistant/components/esphome/light.py
-    homeassistant/components/esphome/switch.py
     homeassistant/components/etherscan/sensor.py
     homeassistant/components/eufy/*
     homeassistant/components/eufylife_ble/__init__.py

tests/components/esphome/test_switch.py

@@ -0,0 +1,55 @@
+"""Test ESPHome switches."""
+
+
+from unittest.mock import call
+
+from aioesphomeapi import APIClient, SwitchInfo, SwitchState
+
+from homeassistant.components.switch import (
+    DOMAIN as SWITCH_DOMAIN,
+    SERVICE_TURN_OFF,
+    SERVICE_TURN_ON,
+)
+from homeassistant.const import ATTR_ENTITY_ID, STATE_ON
+from homeassistant.core import HomeAssistant
+
+
+async def test_switch_generic_entity(
+    hass: HomeAssistant, mock_client: APIClient, mock_generic_device_entry
+) -> None:
+    """Test a generic switch entity."""
+    entity_info = [
+        SwitchInfo(
+            object_id="myswitch",
+            key=1,
+            name="my switch",
+            unique_id="my_switch",
+        )
+    ]
+    states = [SwitchState(key=1, state=True)]
+    user_service = []
+    await mock_generic_device_entry(
+        mock_client=mock_client,
+        entity_info=entity_info,
+        user_service=user_service,
+        states=states,
+    )
+    state = hass.states.get("switch.test_my_switch")
+    assert state is not None
+    assert state.state == STATE_ON
+
+    await hass.services.async_call(
+        SWITCH_DOMAIN,
+        SERVICE_TURN_ON,
+        {ATTR_ENTITY_ID: "switch.test_my_switch"},
+        blocking=True,
+    )
+    mock_client.switch_command.assert_has_calls([call(1, True)])
+
+    await hass.services.async_call(
+        SWITCH_DOMAIN,
+        SERVICE_TURN_OFF,
+        {ATTR_ENTITY_ID: "switch.test_my_switch"},
+        blocking=True,
+    )
+    mock_client.switch_command.assert_has_calls([call(1, False)])