Add reload support to intent_script (#93404)

* support live reload of intent_script

* add services.yaml

* update tesls for full code coverage

* Update based on feedback

* fix intent_script reload when no intent_script config

* Update homeassistant/helpers/intent.py

* update tests to handle no_existing better

---------

Co-authored-by: Paulus Schoutsen <paulus@home-assistant.io>

tests/helpers/test_intent.py

@@ -1,4 +1,6 @@
 """Tests for the intent helpers."""
+from unittest.mock import MagicMock, patch
+
 import pytest
 import voluptuous as vol
 
@@ -184,3 +186,63 @@ async def test_cant_turn_on_lock(hass: HomeAssistant) -> None:
 
     assert result.response.response_type == intent.IntentResponseType.ERROR
     assert result.response.error_code == intent.IntentResponseErrorCode.NO_INTENT_MATCH
+
+
+def test_async_register(hass: HomeAssistant) -> None:
+    """Test registering an intent and verifying it is stored correctly."""
+    handler = MagicMock()
+    handler.intent_type = "test_intent"
+
+    intent.async_register(hass, handler)
+
+    assert hass.data[intent.DATA_KEY]["test_intent"] == handler
+
+
+def test_async_register_overwrite(hass: HomeAssistant) -> None:
+    """Test registering multiple intents with the same type, ensuring the last one overwrites the previous one and a warning is emitted."""
+    handler1 = MagicMock()
+    handler1.intent_type = "test_intent"
+
+    handler2 = MagicMock()
+    handler2.intent_type = "test_intent"
+
+    with patch.object(intent._LOGGER, "warning") as mock_warning:
+        intent.async_register(hass, handler1)
+        intent.async_register(hass, handler2)
+
+        mock_warning.assert_called_once_with(
+            "Intent %s is being overwritten by %s", "test_intent", handler2
+        )
+
+    assert hass.data[intent.DATA_KEY]["test_intent"] == handler2
+
+
+def test_async_remove(hass: HomeAssistant) -> None:
+    """Test removing an intent and verifying it is no longer present in the Home Assistant data."""
+    handler = MagicMock()
+    handler.intent_type = "test_intent"
+
+    intent.async_register(hass, handler)
+    intent.async_remove(hass, "test_intent")
+
+    assert "test_intent" not in hass.data[intent.DATA_KEY]
+
+
+def test_async_remove_no_existing_entry(hass: HomeAssistant) -> None:
+    """Test the removal of a non-existing intent from Home Assistant's data."""
+    handler = MagicMock()
+    handler.intent_type = "test_intent"
+    intent.async_register(hass, handler)
+
+    intent.async_remove(hass, "test_intent2")
+
+    assert "test_intent2" not in hass.data[intent.DATA_KEY]
+
+
+def test_async_remove_no_existing(hass: HomeAssistant) -> None:
+    """Test the removal of an intent where no config exists."""
+
+    intent.async_remove(hass, "test_intent2")
+    # simply shouldn't cause an exception
+
+    assert intent.DATA_KEY not in hass.data