lightning/tests/tests_examples_app/conftest.py

83 lines
2.9 KiB
Python

import os
import shutil
import threading
from subprocess import Popen
import psutil
import pytest
from tests_examples_app.public import _PATH_EXAMPLES
from lightning_app.storage.path import _storage_root_dir
from lightning_app.utilities.component import _set_context
from lightning_app.utilities.packaging import cloud_compute
from lightning_app.utilities.packaging.app_config import _APP_CONFIG_FILENAME
from lightning_app.utilities.state import AppState
GITHUB_APP_URLS = {
"template_react_ui": "https://github.com/Lightning-AI/lightning-template-react.git",
}
os.environ["LIGHTNING_DISPATCHED"] = "1"
def pytest_sessionstart(*_):
"""Pytest hook that get called after the Session object has been created and before performing collection and
entering the run test loop."""
for name, url in GITHUB_APP_URLS.items():
app_path = _PATH_EXAMPLES / name
if not os.path.exists(app_path):
Popen(["git", "clone", url, name], cwd=_PATH_EXAMPLES).wait(timeout=90)
else:
Popen(["git", "pull", "main"], cwd=app_path).wait(timeout=90)
def pytest_sessionfinish(session, exitstatus):
"""Pytest hook that get called after whole test run finished, right before returning the exit status to the
system."""
# kill all the processes and threads created by parent
# TODO this isn't great. We should have each tests doing it's own cleanup
current_process = psutil.Process()
for child in current_process.children(recursive=True):
try:
params = child.as_dict() or {}
cmd_lines = params.get("cmdline", [])
# we shouldn't kill the resource tracker from multiprocessing. If we do,
# `atexit` will throw as it uses resource tracker to try to clean up
if cmd_lines and "resource_tracker" in cmd_lines[-1]:
continue
child.kill()
except psutil.NoSuchProcess:
pass
main_thread = threading.current_thread()
for t in threading.enumerate():
if t is not main_thread:
t.join(0)
@pytest.fixture(scope="function", autouse=True)
def cleanup():
from lightning_app.utilities.app_helpers import _LightningAppRef
yield
_LightningAppRef._app_instance = None
shutil.rmtree("./storage", ignore_errors=True)
shutil.rmtree(_storage_root_dir(), ignore_errors=True)
shutil.rmtree("./.shared", ignore_errors=True)
if os.path.isfile(_APP_CONFIG_FILENAME):
os.remove(_APP_CONFIG_FILENAME)
_set_context(None)
@pytest.fixture(scope="function", autouse=True)
def clear_app_state_state_variables():
"""Resets global variables in order to prevent interference between tests."""
yield
import lightning_app.utilities.state
lightning_app.utilities.state._STATE = None
lightning_app.utilities.state._LAST_STATE = None
AppState._MY_AFFILIATION = ()
if hasattr(cloud_compute, "_CLOUD_COMPUTE_STORE"):
cloud_compute._CLOUD_COMPUTE_STORE.clear()