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import importlib.machinery
import importlib.util
from pathlib import Path
from typing import List, Optional
import pytest
@pytest.hookimpl
def pytest_collect_file(file_path: Path, parent: pytest.Collector) -> Optional[pytest.Collector]:
"""Support for loading our check-* scripts as if they were modules."""
if file_path.name.startswith('check-'):
# Pretend that test/verify/check-name is called like test.verify.check_name
modname = 'test.verify.' + file_path.name.replace('-', '_')
loader = importlib.machinery.SourceFileLoader(modname, str(file_path))
spec = importlib.util.spec_from_loader(loader.name, loader)
assert spec is not None
module = importlib.util.module_from_spec(spec)
loader.exec_module(module)
# Return the tree node with our module pre-loaded inside of it
collector = pytest.Module.from_parent(parent, path=file_path)
collector._obj = module
return collector
return None
@pytest.hookimpl
def pytest_collection_modifyitems(session: pytest.Session, items: List[pytest.Item]) -> None:
"""Sorts the tests to place all non-destructive tests together"""
assert isinstance(items, list)
def is_nondestructive(item: pytest.Item) -> bool:
attr = '_testlib__nondestructive'
assert isinstance(item, pytest.Function)
assert isinstance(item.parent, pytest.Class | pytest.Module)
return getattr(item.obj, attr, getattr(item.parent.obj, attr, False))
# put the destructive tests last under the assumption that they're slower
items.sort(key=is_nondestructive, reverse=True)
@pytest.hookimpl
def pytest_configure(config: pytest.Config) -> None:
"""Tweaks test distribution for long-running tasks
pytest-xdist sends large chunks of tasks to the workers to reduce
latency, but since our tasks are long, this isn't helpful. It also
means that we can end up with a large string of very slow tests on
one worker. Disable it, if possible.
https://github.com/pytest-dev/pytest-xdist/issues/855
"""
try:
# If parallel enabled and maxschedchunk not otherwise given...
if config.option.numprocesses and config.option.maxschedchunk is None:
config.option.maxschedchunk = 1
except AttributeError:
pass # no pytest-xdist plugin installed, or plugin is too old
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