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How to use maybe_delete_a_numbered_dir method in Pytest

Best Python code snippet using pytest

pathlib.py

Source:pathlib.py

...125            lock_path.unlink()126        except (OSError, IOError):127            pass128    return register(cleanup_on_exit)129def maybe_delete_a_numbered_dir(path):130    """removes a numbered directory if its lock can be obtained and it does not seem to be in use"""131    lock_path = None132    try:133        lock_path = create_cleanup_lock(path)134        parent = path.parent135        garbage = parent.joinpath("garbage-{}".format(uuid.uuid4()))136        path.rename(garbage)137        rmtree(garbage, force=True)138    except (OSError, EnvironmentError):139        #  known races:140        #  * other process did a cleanup at the same time141        #  * deletable folder was found142        #  * process cwd (Windows)143        return144    finally:145        # if we created the lock, ensure we remove it even if we failed146        # to properly remove the numbered dir147        if lock_path is not None:148            try:149                lock_path.unlink()150            except (OSError, IOError):151                pass152def ensure_deletable(path, consider_lock_dead_if_created_before):153    """checks if a lock exists and breaks it if its considered dead"""154    if path.is_symlink():155        return False156    lock = get_lock_path(path)157    if not lock.exists():158        return True159    try:160        lock_time = lock.stat().st_mtime161    except Exception:162        return False163    else:164        if lock_time < consider_lock_dead_if_created_before:165            lock.unlink()166            return True167        else:168            return False169def try_cleanup(path, consider_lock_dead_if_created_before):170    """tries to cleanup a folder if we can ensure it's deletable"""171    if ensure_deletable(path, consider_lock_dead_if_created_before):172        maybe_delete_a_numbered_dir(path)173def cleanup_candidates(root, prefix, keep):174    """lists candidates for numbered directories to be removed - follows py.path"""175    max_existing = max(map(parse_num, find_suffixes(root, prefix)), default=-1)176    max_delete = max_existing - keep177    paths = find_prefixed(root, prefix)178    paths, paths2 = itertools.tee(paths)179    numbers = map(parse_num, extract_suffixes(paths2, prefix))180    for path, number in zip(paths, numbers):181        if number <= max_delete:182            yield path183def cleanup_numbered_dir(root, prefix, keep, consider_lock_dead_if_created_before):184    """cleanup for lock driven numbered directories"""185    for path in cleanup_candidates(root, prefix, keep):186        try_cleanup(path, consider_lock_dead_if_created_before)...

test_pathlib.py

Source:test_pathlib.py

...64    def renamed_failed(*args):65        raise OSError("access denied")66    monkeypatch.setattr(Path, "rename", renamed_failed)67    lock_path = get_lock_path(path)68    maybe_delete_a_numbered_dir(path)...

Pytest Tutorial

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Chapters

What is pytest
Pytest installation: Want to start pytest from scratch? See how to install and configure pytest for Python automation testing.
Run first test with pytest framework: Follow this step-by-step tutorial to write and run your first pytest script.
Parallel testing with pytest: A hands-on guide to parallel testing with pytest to improve the scalability of your test automation.
Generate pytest reports: Reports make it easier to understand the results of pytest-based test runs. Learn how to generate pytest reports.
Pytest Parameterized tests: Create and run your pytest scripts while avoiding code duplication and increasing test coverage with parameterization.
Pytest Fixtures: Check out how to implement pytest fixtures for your end-to-end testing needs.
Execute Multiple Test Cases: Explore different scenarios for running multiple test cases in pytest from a single file.
Stop Test Suite after N Test Failures: See how to stop your test suite after n test failures in pytest using the @pytest.mark.incremental decorator and maxfail command-line option.