# Copyright 2014-2017 Insight Software Consortium.
# Copyright 2004-2009 Roman Yakovenko.
# Distributed under the Boost Software License, Version 1.0.
# See http://www.boost.org/LICENSE_1_0.txt

import pytest

from . import autoconfig

from pygccxml import parser
from pygccxml import declarations

TEST_FILES = [
    "bit_fields.hpp",
]


@pytest.fixture
def global_ns():
    COMPILATION_MODE = parser.COMPILATION_MODE.ALL_AT_ONCE
    INIT_OPTIMIZER = True
    config = autoconfig.cxx_parsers_cfg.config.clone()
    decls = parser.parse(TEST_FILES, config, COMPILATION_MODE)
    global_ns = declarations.get_global_namespace(decls)
    if INIT_OPTIMIZER:
        global_ns.init_optimizer()
    return global_ns


def test_bit_fields(global_ns):
    bf_x = global_ns.variable('x')
    assert bf_x.bits == 1

    bf_y = global_ns.variable('y')
    assert bf_y.bits == 7

    mv_z = global_ns.variable('z')
    assert mv_z.bits is None