def test_set_var(adata, subset_func):
    init_hash = joblib.hash(adata)

    subset = adata[:, subset_func(adata.var_names)]

    new_var = pd.DataFrame(
        dict(a=np.ones(subset.n_vars), b=np.ones(subset.n_vars)),
        index=subset.var_names,
    )

    assert subset.is_view
    subset.var = new_var
    assert not subset.is_view
    assert np.all(subset.var == new_var)

    assert joblib.hash(adata) == init_hash
def get_repository_root(cls, location):
        loc = super(Git, cls).get_repository_root(location)
        if loc:
            return loc
        try:
            r = cls.run_command(
                ['rev-parse', '--show-toplevel'],
                cwd=location,
                show_stdout=False,
                stdout_only=True,
                on_returncode='raise',
                log_failed_cmd=False,
            )
        except BadCommand:
            logger.debug("could not determine if %s is under git control "
                         "because git is not available", location)
            return None
        except InstallationError:
            return None
        return os.path.normpath(r.rstrip('\r\n'))