Add input_text reload service. (#29644)

* Add input_text reload service.

* Add test.

homeassistant/components/input_text/__init__.py

@@ -9,10 +9,12 @@ from homeassistant.const import (
     CONF_ICON,
     CONF_MODE,
     CONF_NAME,
+    SERVICE_RELOAD,
 )
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity_component import EntityComponent
 from homeassistant.helpers.restore_state import RestoreEntity
+import homeassistant.helpers.service
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -76,12 +78,43 @@ CONFIG_SCHEMA = vol.Schema(
     required=True,
     extra=vol.ALLOW_EXTRA,
 )
+RELOAD_SERVICE_SCHEMA = vol.Schema({})
 
 
 async def async_setup(hass, config):
     """Set up an input text box."""
     component = EntityComponent(_LOGGER, DOMAIN, hass)
 
+    entities = await _async_process_config(config)
+
+    async def reload_service_handler(service_call):
+        """Remove all entities and load new ones from config."""
+        conf = await component.async_prepare_reload()
+        if conf is None:
+            return
+        new_entities = await _async_process_config(conf)
+        if new_entities:
+            await component.async_add_entities(new_entities)
+
+    homeassistant.helpers.service.async_register_admin_service(
+        hass,
+        DOMAIN,
+        SERVICE_RELOAD,
+        reload_service_handler,
+        schema=RELOAD_SERVICE_SCHEMA,
+    )
+
+    component.async_register_entity_service(
+        SERVICE_SET_VALUE, {vol.Required(ATTR_VALUE): cv.string}, "async_set_value"
+    )
+
+    if entities:
+        await component.async_add_entities(entities)
+    return True
+
+
+async def _async_process_config(config):
+    """Process config and create list of entities."""
     entities = []
 
     for object_id, cfg in config[DOMAIN].items():
@@ -102,15 +135,7 @@ async def async_setup(hass, config):
             )
         )
 
-    if not entities:
-        return False
-
-    component.async_register_entity_service(
-        SERVICE_SET_VALUE, {vol.Required(ATTR_VALUE): cv.string}, "async_set_value"
-    )
-
-    await component.async_add_entities(entities)
-    return True
+    return entities
 
 
 class InputText(RestoreEntity):

homeassistant/components/input_text/services.yaml

@@ -4,3 +4,5 @@ set_value:
     entity_id: {description: Entity id of the input text to set the new value., example: input_text.text1}
     value: {description: The target value the entity should be set to., example: This
         is an example text}
+reload:
+  description: Reload the input_text configuration.

tests/components/input_text/test_init.py

@@ -1,10 +1,14 @@
 """The tests for the Input text component."""
 # pylint: disable=protected-access
 import asyncio
+from unittest.mock import patch
+
+import pytest
 
 from homeassistant.components.input_text import ATTR_VALUE, DOMAIN, SERVICE_SET_VALUE
-from homeassistant.const import ATTR_ENTITY_ID
+from homeassistant.const import ATTR_ENTITY_ID, SERVICE_RELOAD
 from homeassistant.core import Context, CoreState, State
+from homeassistant.exceptions import Unauthorized
 from homeassistant.loader import bind_hass
 from homeassistant.setup import async_setup_component
 
@@ -195,3 +199,64 @@ async def test_config_none(hass):
     state = hass.states.get("input_text.b1")
     assert state
     assert str(state.state) == "unknown"
+
+
+async def test_reload(hass, hass_admin_user, hass_read_only_user):
+    """Test reload service."""
+    count_start = len(hass.states.async_entity_ids())
+
+    assert await async_setup_component(
+        hass,
+        DOMAIN,
+        {DOMAIN: {"test_1": {"initial": "test 1"}, "test_2": {"initial": "test 2"}}},
+    )
+
+    assert count_start + 2 == len(hass.states.async_entity_ids())
+
+    state_1 = hass.states.get("input_text.test_1")
+    state_2 = hass.states.get("input_text.test_2")
+    state_3 = hass.states.get("input_text.test_3")
+
+    assert state_1 is not None
+    assert state_2 is not None
+    assert state_3 is None
+    assert "test 1" == state_1.state
+    assert "test 2" == state_2.state
+
+    with patch(
+        "homeassistant.config.load_yaml_config_file",
+        autospec=True,
+        return_value={
+            DOMAIN: {
+                "test_2": {"initial": "test reloaded"},
+                "test_3": {"initial": "test 3"},
+            }
+        },
+    ):
+        with patch("homeassistant.config.find_config_file", return_value=""):
+            with pytest.raises(Unauthorized):
+                await hass.services.async_call(
+                    DOMAIN,
+                    SERVICE_RELOAD,
+                    blocking=True,
+                    context=Context(user_id=hass_read_only_user.id),
+                )
+            await hass.services.async_call(
+                DOMAIN,
+                SERVICE_RELOAD,
+                blocking=True,
+                context=Context(user_id=hass_admin_user.id),
+            )
+            await hass.async_block_till_done()
+
+    assert count_start + 2 == len(hass.states.async_entity_ids())
+
+    state_1 = hass.states.get("input_text.test_1")
+    state_2 = hass.states.get("input_text.test_2")
+    state_3 = hass.states.get("input_text.test_3")
+
+    assert state_1 is None
+    assert state_2 is not None
+    assert state_3 is not None
+    assert "test reloaded" == state_2.state
+    assert "test 3" == state_3.state