core/tests/components/demo/test_init.py

43 lines
1.2 KiB
Python

"""The tests for the Demo component."""
import json
import os
import pytest
from homeassistant.components import demo
from homeassistant.components.device_tracker.legacy import YAML_DEVICES
from homeassistant.helpers.json import JSONEncoder
from homeassistant.setup import async_setup_component
@pytest.fixture(autouse=True)
def mock_history(hass):
"""Mock history component loaded."""
hass.config.components.add("history")
@pytest.fixture(autouse=True)
def demo_cleanup(hass):
"""Clean up device tracker demo file."""
yield
try:
os.remove(hass.config.path(YAML_DEVICES))
except FileNotFoundError:
pass
async def test_setting_up_demo(hass):
"""Test if we can set up the demo and dump it to JSON."""
assert await async_setup_component(hass, demo.DOMAIN, {"demo": {}})
await hass.async_start()
# This is done to make sure entity components don't accidentally store
# non-JSON-serializable data in the state machine.
try:
json.dumps(hass.states.async_all(), cls=JSONEncoder)
except Exception:
pytest.fail(
"Unable to convert all demo entities to JSON. "
"Wrong data in state machine!"
)