pif_list_contains_items
unit_assert(pif_list_contains_items(shpif, 1, 2, 3, 4));
unit_assert(pif_list_contains_items(shpif, 1, 2, 3, 4));
unit_assert(pif_list_contains_items(shpif, 1, 2, 3, 4));
unit_assert(pif_list_contains_items(shpif, 1, 2, 3, 4));
unit_assert(pif_list_contains_items(shpif, 1, 2, 3, 4));