test_firewall_lib.py

# -*- coding: utf-8 -*-

# Copyright: (c) 2020, Rich Megginson <rmeggins@redhat.com>
# SPDX-License-Identifier: GPL-2.0-or-later
#
""" Unit tests for kernel_settings module """

from __future__ import absolute_import, division, print_function

__metaclass__ = type

import unittest

try:
    from unittest.mock import MagicMock, Mock, patch
except ImportError:
    from mock import MagicMock, Mock, patch

import firewall_lib

class MockException(Exception): pass


class MockAnsibleModule(object):
    def __init__(self, **kwargs):
        self.params = {}
        self.call_params = {}
        if not kwargs:
            return
        if "name" in kwargs:
            self.name = kwargs["name"]
            return

    def __call__(self, **kwargs):
        for kk, vv in kwargs["argument_spec"].items():
            self.call_params[kk] = vv.get("default")
            if kk not in self.params:
                self.params[kk] = self.call_params[kk]
        self.supports_check_mode = kwargs["supports_check_mode"]
        return self

    def set_params(self, params):
        self.params = params

    def fail_json(self, msg):
        self.fail_msg = msg
        raise MockException()


class FirewallLibParsers(unittest.TestCase):
    """test param to profile conversion and vice versa"""

    # def assertRegex(self, text, expected_regex, msg=None):
    #     """Fail the test unless the text matches the regular expression."""
    #     assert re.search(expected_regex, text)

    # def setUp(self):
    #     self.test_root_dir = tempfile.mkdtemp(suffix=".lsr")
    #     os.environ["TEST_ROOT_DIR"] = self.test_root_dir
    #     self.test_cleanup = kernel_settings.setup_for_testing()
    #     self.tuned_config = tuned.utils.global_config.GlobalConfig()
    #     self.logger = Mock()

    # def tearDown(self):
    #     self.test_cleanup()
    #     shutil.rmtree(self.test_root_dir)
    #     del os.environ["TEST_ROOT_DIR"]

    def test_parse_port(self):
        """Test the code that parses port values."""

        module = Mock()
        item = "a/b"
        rc = firewall_lib.parse_port(module, item)
        self.assertEqual(("a", "b"), rc)

    def test_parse_forward_port(self):
        """Test the code that parses port values."""

        module = Mock()
        module.fail_json = Mock(side_effect=MockException())
        item = "aaa"
        with self.assertRaises(MockException):
            rc = firewall_lib.parse_forward_port(module, item)
        module.fail_json.assert_called_with(msg="improper forward_port format: aaa")
        item = "a/b;;"
        rc = firewall_lib.parse_forward_port(module, item)
        self.assertEqual(("a", "b", None, None), rc)

class FirewallLibMain(unittest.TestCase):
    """Test main function."""

    @patch('firewall_lib.AnsibleModule')
    def test_main_error_no_firewall_backend(self, module_class):
        module_class.return_value.fail_json = Mock(side_effect=MockException())
        with self.assertRaises(MockException):
            firewall_lib.main()
        module_class.return_value.fail_json.assert_called_with(msg="No firewall backend could be imported.")

    @patch('firewall_lib.AnsibleModule', new_callable=MockAnsibleModule)
    @patch('firewall_lib.HAS_FIREWALLD', True)
    def test_main_error_no_params(self, am_class):
        with self.assertRaises(MockException):
            firewall_lib.main()
        self.assertEqual(
            am_class.fail_msg,
            "One of service, port, source_port, forward_port, masquerade, rich_rule, source, "
            "interface, icmp_block, icmp_block_inversion, target or zone needs to be set"
        )

    @patch('firewall_lib.AnsibleModule', new_callable=MockAnsibleModule)
    @patch('firewall_lib.HAS_FIREWALLD', True)
    def test_main_error_timeout_icmp_block_inversion(self, am_class):
        am_class.set_params({"icmp_block_inversion": True, "timeout": 1})
        with self.assertRaises(MockException):
            firewall_lib.main()
        self.assertEqual(
            am_class.fail_msg,
            "timeout can not be used with icmp_block_inverson only"
        )