What is tmp_path equivalent for tmpdir.as_cwd() ?

[pllim]

In astropy infrastructure for doctest, I saw a tmpdir usage that I am not sure how to modernize with tmp_path . What is the equivalent of this call if I were to replace tmpdir with tmp_path , as you recommend in your docs? Thanks!

https://github.com/astropy/astropy/blob/a8a8f9a92167516510d7df6c29283c5afdb80b99/docs/conftest.py#L37

@pytest.fixture(autouse=True)
def _docdir(request):
    """Run doctests in isolated tmpdir so outputs do not end up in repo"""
    # Trigger ONLY for doctestplus
    doctest_plugin = request.config.pluginmanager.getplugin("doctestplus")
    if isinstance(request.node.parent, doctest_plugin._doctest_textfile_item_cls):
        # Don't apply this fixture to io.rst.  It reads files and doesn't write
        if "io.rst" not in request.node.name:
            tmpdir = request.getfixturevalue('tmpdir')
            with tmpdir.as_cwd():
                yield
        else:
            yield
    else:
        yield

[The-Compiler]

No pre-made pathlib equivalent exists. You could use pytest's monkeypatch fixture:

monkeypatch.chdir(tmp_path)

or alternatively, something like this:

old_cwd = pathlib.Path.cwd()
os.chdir(path)
yield
os.chdir(old_cwd)

If you really need a context manager (doesn't look like you do here), it'd look something like this:

@contextlib.contextmanager
def change_cwd(path: pathlib.Path) -> Iterator[None]:
    old_cwd = pathlib.Path.cwd()
    os.chdir(path)
    try:
        yield
    finally:
        os.chdir(old_cwd)