def test_view_of_view(matrix_type, subset_func, subset_func2):
    adata = gen_adata((30, 15), X_type=matrix_type)
    adata.raw = adata
    if subset_func is single_subset:
        pytest.xfail("Other subset generating functions have trouble with this")
    var_s1 = subset_func(adata.var_names, min_size=4)
    var_view1 = adata[:, var_s1]
    var_s2 = subset_func2(var_view1.var_names)
    var_view2 = var_view1[:, var_s2]
    assert var_view2._adata_ref is adata
    obs_s1 = subset_func(adata.obs_names, min_size=4)
    obs_view1 = adata[obs_s1, :]
    obs_s2 = subset_func2(obs_view1.obs_names)
    assert adata[obs_s1, :][:, var_s1][obs_s2, :]._adata_ref is adata

    view_of_actual_copy = adata[:, var_s1].copy()[obs_s1, :].copy()[:, var_s2].copy()

    view_of_view_copy = adata[:, var_s1][obs_s1, :][:, var_s2].copy()

    assert_equal(view_of_actual_copy, view_of_view_copy, exact=True)
def _create_swdb_group(self, group_id, pkg_types, pkgs):
        comps_group = self._base.comps._group_by_id(group_id)
        if not comps_group:
            self._raise_or_warn(self._skip_unavailable, _("Group id '%s' is not available.") % group_id)
            return None

        swdb_group = self._base.history.group.new(group_id, comps_group.name, comps_group.ui_name, pkg_types)

        try:
            for pkg in pkgs:
                name = pkg["name"]
                self._assert_type(name, str, "groups.packages.name", "string")
                installed = pkg["installed"]
                self._assert_type(installed, bool, "groups.packages.installed", "boolean")
                package_type = pkg["package_type"]
                self._assert_type(package_type, str, "groups.packages.package_type", "string")

                try:
                    swdb_group.addPackage(name, installed, libdnf.transaction.stringToCompsPackageType(package_type))
                except libdnf.error.Error as e:
                    raise TransactionError(str(e))

        except KeyError as e:
            raise TransactionError(
                _('Missing object key "{key}" in groups.packages.').format(key=e.args[0])
            )

        return swdb_group