Add a Local To-do component (#102627)

Co-authored-by: Robert Resch <robert@resch.dev>
Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

tests/components/local_todo/test_init.py

@@ -0,0 +1,60 @@
+"""Tests for init platform of local_todo."""
+
+from unittest.mock import patch
+
+import pytest
+
+from homeassistant.config_entries import ConfigEntryState
+from homeassistant.core import HomeAssistant
+
+from .conftest import TEST_ENTITY
+
+from tests.common import MockConfigEntry
+
+
+async def test_load_unload(
+    hass: HomeAssistant, setup_integration: None, config_entry: MockConfigEntry
+) -> None:
+    """Test loading and unloading a config entry."""
+
+    assert config_entry.state == ConfigEntryState.LOADED
+
+    state = hass.states.get(TEST_ENTITY)
+    assert state
+    assert state.state == "0"
+
+    await hass.config_entries.async_unload(config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    assert config_entry.state == ConfigEntryState.NOT_LOADED
+    state = hass.states.get(TEST_ENTITY)
+    assert state
+    assert state.state == "unavailable"
+
+
+async def test_remove_config_entry(
+    hass: HomeAssistant, setup_integration: None, config_entry: MockConfigEntry
+) -> None:
+    """Test removing a config entry."""
+
+    with patch("homeassistant.components.local_todo.Path.unlink") as unlink_mock:
+        assert await hass.config_entries.async_remove(config_entry.entry_id)
+        await hass.async_block_till_done()
+        unlink_mock.assert_called_once()
+
+
+@pytest.mark.parametrize(
+    ("store_read_side_effect"),
+    [
+        (OSError("read error")),
+    ],
+)
+async def test_load_failure(
+    hass: HomeAssistant, setup_integration: None, config_entry: MockConfigEntry
+) -> None:
+    """Test failures loading the todo store."""
+
+    assert config_entry.state == ConfigEntryState.SETUP_RETRY
+
+    state = hass.states.get(TEST_ENTITY)
+    assert not state