core/tests/components/folder_watcher/test_init.py

"""The tests for the folder_watcher component."""
import os
from unittest.mock import Mock, patch

from homeassistant.components import folder_watcher
from homeassistant.setup import async_setup_component

from tests.common import MockDependency


async def test_invalid_path_setup(hass):
    """Test that an invalid path is not set up."""
    assert not await async_setup_component(
        hass,
        folder_watcher.DOMAIN,
        {folder_watcher.DOMAIN: {folder_watcher.CONF_FOLDER: "invalid_path"}},
    )


async def test_valid_path_setup(hass):
    """Test that a valid path is setup."""
    cwd = os.path.join(os.path.dirname(__file__))
    hass.config.whitelist_external_dirs = {cwd}
    with patch.object(folder_watcher, "Watcher"):
        assert await async_setup_component(
            hass,
            folder_watcher.DOMAIN,
            {folder_watcher.DOMAIN: {folder_watcher.CONF_FOLDER: cwd}},
        )


@MockDependency("watchdog", "events")
def test_event(mock_watchdog):
    """Check that Home Assistant events are fired correctly on watchdog event."""

    class MockPatternMatchingEventHandler:
        """Mock base class for the pattern matcher event handler."""

        def __init__(self, patterns):
            pass

    mock_watchdog.events.PatternMatchingEventHandler = MockPatternMatchingEventHandler
    hass = Mock()
    handler = folder_watcher.create_event_handler(["*"], hass)
    handler.on_created(
        Mock(is_directory=False, src_path="/hello/world.txt", event_type="created")
    )
    assert hass.bus.fire.called
    assert hass.bus.fire.mock_calls[0][1][0] == folder_watcher.DOMAIN
    assert hass.bus.fire.mock_calls[0][1][1] == {
        "event_type": "created",
        "path": "/hello/world.txt",
        "file": "world.txt",
        "folder": "/hello",
    }