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import os
import contextlib
import sys
import subprocess
from pathlib import Path
import pytest
import path
from . import contexts, environment
@pytest.fixture
def user_override(monkeypatch):
"""
Override site.USER_BASE and site.USER_SITE with temporary directories in
a context.
"""
with contexts.tempdir() as user_base:
monkeypatch.setattr('site.USER_BASE', user_base)
with contexts.tempdir() as user_site:
monkeypatch.setattr('site.USER_SITE', user_site)
with contexts.save_user_site_setting():
yield
@pytest.fixture
def tmpdir_cwd(tmpdir):
with tmpdir.as_cwd() as orig:
yield orig
@pytest.fixture(autouse=True, scope="session")
def workaround_xdist_376(request):
"""
Workaround pytest-dev/pytest-xdist#376
``pytest-xdist`` tends to inject '' into ``sys.path``,
which may break certain isolation expectations.
Remove the entry so the import
machinery behaves the same irrespective of xdist.
"""
if not request.config.pluginmanager.has_plugin('xdist'):
return
with contextlib.suppress(ValueError):
sys.path.remove('')
@pytest.fixture
def sample_project(tmp_path):
"""
Clone the 'sampleproject' and return a path to it.
"""
cmd = ['git', 'clone', 'https://github.com/pypa/sampleproject']
try:
subprocess.check_call(cmd, cwd=str(tmp_path))
except Exception:
pytest.skip("Unable to clone sampleproject")
return tmp_path / 'sampleproject'
# sdist and wheel artifacts should be stable across a round of tests
# so we can build them once per session and use the files as "readonly"
@pytest.fixture(scope="session")
def setuptools_sdist(tmp_path_factory, request):
if os.getenv("PRE_BUILT_SETUPTOOLS_SDIST"):
return Path(os.getenv("PRE_BUILT_SETUPTOOLS_SDIST")).resolve()
with contexts.session_locked_tmp_dir(
request, tmp_path_factory, "sdist_build") as tmp:
dist = next(tmp.glob("*.tar.gz"), None)
if dist:
return dist
subprocess.check_call([
sys.executable, "-m", "build", "--sdist",
"--outdir", str(tmp), str(request.config.rootdir)
])
return next(tmp.glob("*.tar.gz"))
@pytest.fixture(scope="session")
def setuptools_wheel(tmp_path_factory, request):
if os.getenv("PRE_BUILT_SETUPTOOLS_WHEEL"):
return Path(os.getenv("PRE_BUILT_SETUPTOOLS_WHEEL")).resolve()
with contexts.session_locked_tmp_dir(
request, tmp_path_factory, "wheel_build") as tmp:
dist = next(tmp.glob("*.whl"), None)
if dist:
return dist
subprocess.check_call([
sys.executable, "-m", "build", "--wheel",
"--outdir", str(tmp) , str(request.config.rootdir)
])
return next(tmp.glob("*.whl"))
@pytest.fixture
def venv(tmp_path, setuptools_wheel):
"""Virtual env with the version of setuptools under test installed"""
env = environment.VirtualEnv()
env.root = path.Path(tmp_path / 'venv')
env.req = str(setuptools_wheel)
# In some environments (eg. downstream distro packaging),
# where tox isn't used to run tests and PYTHONPATH is set to point to
# a specific setuptools codebase, PYTHONPATH will leak into the spawned
# processes.
# env.create() should install the just created setuptools
# wheel, but it doesn't if it finds another existing matching setuptools
# installation present on PYTHONPATH:
# `setuptools is already installed with the same version as the provided
# wheel. Use --force-reinstall to force an installation of the wheel.`
# This prevents leaking PYTHONPATH to the created environment.
with contexts.environment(PYTHONPATH=None):
return env.create()
@pytest.fixture
def venv_without_setuptools(tmp_path):
"""Virtual env without any version of setuptools installed"""
env = environment.VirtualEnv()
env.root = path.Path(tmp_path / 'venv_without_setuptools')
env.create_opts = ['--no-setuptools']
env.ensure_env()
return env
@pytest.fixture
def bare_venv(tmp_path):
"""Virtual env without any common packages installed"""
env = environment.VirtualEnv()
env.root = path.Path(tmp_path / 'bare_venv')
env.create_opts = ['--no-setuptools', '--no-pip', '--no-wheel', '--no-seed']
env.ensure_env()
return env
|
