def test_portable_path():
    test_path = 'dir/subdir/file'
    assert (portable_path(test_path) == f'{os.sep}'.join(test_path.split('/')))
def test_portable_path():
    test_path = 'dir/subdir/file'
    assert (portable_path(test_path) == f'{os.sep}'.join(test_path.split('/')))