#
# Copyright (C) 2018  FreeIPA Contributors see COPYING for license
#
"""Tests for ipalib.util module
"""

import os
from unittest import mock

import pytest

from ipalib.util import get_pager


@pytest.mark.parametrize('pager,expected_result', [
    # Valid values
    ('cat', '/usr/bin/cat'),
    ('/usr/bin/cat', '/usr/bin/cat'),
    # Invalid values (wrong command, package is not installed, etc)
    ('cat_', None),
    ('', None)
])
def test_get_pager(pager, expected_result):
    with mock.patch.dict(os.environ, {'PAGER': pager}):
        assert get_pager() == expected_result