diff options
Diffstat (limited to '.venv/lib/python3.12/site-packages/setuptools/tests/contexts.py')
-rw-r--r-- | .venv/lib/python3.12/site-packages/setuptools/tests/contexts.py | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/setuptools/tests/contexts.py b/.venv/lib/python3.12/site-packages/setuptools/tests/contexts.py new file mode 100644 index 00000000..97cceea0 --- /dev/null +++ b/.venv/lib/python3.12/site-packages/setuptools/tests/contexts.py @@ -0,0 +1,145 @@ +import contextlib +import io +import os +import shutil +import site +import sys +import tempfile + +from filelock import FileLock + + +@contextlib.contextmanager +def tempdir(cd=lambda dir: None, **kwargs): + temp_dir = tempfile.mkdtemp(**kwargs) + orig_dir = os.getcwd() + try: + cd(temp_dir) + yield temp_dir + finally: + cd(orig_dir) + shutil.rmtree(temp_dir) + + +@contextlib.contextmanager +def environment(**replacements): + """ + In a context, patch the environment with replacements. Pass None values + to clear the values. + """ + saved = dict((key, os.environ[key]) for key in replacements if key in os.environ) + + # remove values that are null + remove = (key for (key, value) in replacements.items() if value is None) + for key in list(remove): + os.environ.pop(key, None) + replacements.pop(key) + + os.environ.update(replacements) + + try: + yield saved + finally: + for key in replacements: + os.environ.pop(key, None) + os.environ.update(saved) + + +@contextlib.contextmanager +def quiet(): + """ + Redirect stdout/stderr to StringIO objects to prevent console output from + distutils commands. + """ + + old_stdout = sys.stdout + old_stderr = sys.stderr + new_stdout = sys.stdout = io.StringIO() + new_stderr = sys.stderr = io.StringIO() + try: + yield new_stdout, new_stderr + finally: + new_stdout.seek(0) + new_stderr.seek(0) + sys.stdout = old_stdout + sys.stderr = old_stderr + + +@contextlib.contextmanager +def save_user_site_setting(): + saved = site.ENABLE_USER_SITE + try: + yield saved + finally: + site.ENABLE_USER_SITE = saved + + +@contextlib.contextmanager +def save_pkg_resources_state(): + import pkg_resources + + pr_state = pkg_resources.__getstate__() + # also save sys.path + sys_path = sys.path[:] + try: + yield pr_state, sys_path + finally: + sys.path[:] = sys_path + pkg_resources.__setstate__(pr_state) + + +@contextlib.contextmanager +def suppress_exceptions(*excs): + try: + yield + except excs: + pass + + +def multiproc(request): + """ + Return True if running under xdist and multiple + workers are used. + """ + try: + worker_id = request.getfixturevalue('worker_id') + except Exception: + return False + return worker_id != 'master' + + +@contextlib.contextmanager +def session_locked_tmp_dir(request, tmp_path_factory, name): + """Uses a file lock to guarantee only one worker can access a temp dir""" + # get the temp directory shared by all workers + base = tmp_path_factory.getbasetemp() + shared_dir = base.parent if multiproc(request) else base + + locked_dir = shared_dir / name + with FileLock(locked_dir.with_suffix(".lock")): + # ^-- prevent multiple workers to access the directory at once + locked_dir.mkdir(exist_ok=True, parents=True) + yield locked_dir + + +@contextlib.contextmanager +def save_paths(): + """Make sure ``sys.path``, ``sys.meta_path`` and ``sys.path_hooks`` are preserved""" + prev = sys.path[:], sys.meta_path[:], sys.path_hooks[:] + + try: + yield + finally: + sys.path, sys.meta_path, sys.path_hooks = prev + + +@contextlib.contextmanager +def save_sys_modules(): + """Make sure initial ``sys.modules`` is preserved""" + prev_modules = sys.modules + + try: + sys.modules = sys.modules.copy() + yield + finally: + sys.modules = prev_modules |