import sys import os # 현재 스크립트의 디렉토리를 sys.path에 추가하여 policy_routing 모듈을 찾을 수 있도록 함 sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '.'))) import unittest from unittest.mock import patch, MagicMock import unittest.mock as mock import json import subprocess import logging import ipaddress # policy-routing.py에서 필요한 클래스와 상수 임포트 import policy_routing # 로깅 비활성화 (테스트 시 불필요한 로그 출력 방지) logging.disable(logging.CRITICAL) class TestPolicyRoutingManager(unittest.TestCase): def setUp(self): """각 테스트 전에 실행될 초기화 코드""" # 테스트용 임시 설정 파일 경로 설정 self.test_config_file = "/tmp/test_policy_routing.json" self.test_rt_tables_file = "/tmp/test_rt_tables" # CONFIG_FILE과 RT_TABLES_FILE을 테스트용으로 오버라이드 # 실제 파일에 영향을 주지 않도록 패치 self.config_file_patch = patch('policy_routing.CONFIG_FILE', self.test_config_file) self.rt_tables_file_patch = patch('policy_routing.RT_TABLES_FILE', self.test_rt_tables_file) self.mock_config_file = self.config_file_patch.start() self.mock_rt_tables_file = self.rt_tables_file_patch.start() # 임시 설정 파일 생성 (기본값으로) with open(self.test_config_file, 'w') as f: json.dump(policy_routing.DEFAULT_CONFIG, f, indent=2) # 임시 rt_tables 파일 생성 with open(self.test_rt_tables_file, 'w') as f: f.write("#\n# reserved values\n#\n255\tlocal\n254\tmain\n253\tdefault\n0\tunspec\n") self.manager = policy_routing.PolicyRoutingManager(debug=True) # 로거를 테스트용으로 변경하여 실제 파일에 쓰지 않도록 함 self.manager.logger = MagicMock() def tearDown(self): """각 테스트 후에 실행될 정리 코드""" # 임시 파일 삭제 if os.path.exists(self.test_config_file): os.remove(self.test_config_file) if os.path.exists(self.test_rt_tables_file): os.remove(self.test_rt_tables_file) self.config_file_patch.stop() self.rt_tables_file_patch.stop() def test_calculate_network(self): """calculate_network 함수 테스트""" self.assertEqual(self.manager.calculate_network("192.168.1.100", "24"), "192.168.1.0/24") self.assertEqual(self.manager.calculate_network("10.0.0.5", "8"), "10.0.0.0/8") self.assertEqual(self.manager.calculate_network("172.16.10.20", "16"), "172.16.0.0/16") self.assertEqual(self.manager.calculate_network("192.168.1.1", "30"), "192.168.1.0/30") # 잘못된 IP 형식 self.assertEqual(self.manager.calculate_network("invalid-ip", "24"), "0.0.0.0/24") # 잘못된 넷마스크 self.assertEqual(self.manager.calculate_network("192.168.1.100", "abc"), "0.0.0.0/abc") # 이 경우 폴백 로직에 따라 달라질 수 있음 self.assertEqual(self.manager.calculate_network("192.168.1.100", "33"), "0.0.0.0/33") # 유효하지 않은 넷마스크 @patch('subprocess.run') def test_run_command_success(self, mock_run): """run_command 성공 케이스 테스트""" mock_run.return_value = MagicMock(stdout="Success output", stderr="", returncode=0) success, output = self.manager.run_command(["echo", "hello"]) self.assertTrue(success) self.assertEqual(output, "Success output") mock_run.assert_called_once_with(["echo", "hello"], capture_output=True, text=True, check=True) self.manager.logger.debug.assert_any_call("실행: echo hello") self.manager.logger.debug.assert_any_call("성공: echo hello") self.manager.logger.debug.assert_any_call("출력: Success output") @patch('subprocess.run') def test_run_command_failure(self, mock_run): """run_command 실패 케이스 테스트""" mock_run.side_effect = subprocess.CalledProcessError(returncode=1, cmd=["bad", "cmd"], stderr="Error output") success, output = self.manager.run_command(["bad", "cmd"]) self.assertFalse(success) self.assertEqual(output, "Error output") self.manager.logger.error.assert_called_once_with("명령어 실행 실패: bad cmd - Error output") @patch('subprocess.run') def test_run_command_ignore_errors(self, mock_run): """run_command 특정 오류 무시 케이스 테스트""" mock_run.side_effect = subprocess.CalledProcessError(returncode=1, cmd=["ip", "route", "flush"], stderr="No such file or directory") success, output = self.manager.run_command(["ip", "route", "flush"], ignore_errors=["No such file or directory"]) self.assertTrue(success) self.assertEqual(output, "") self.manager.logger.error.assert_not_called() self.manager.logger.debug.assert_any_call("무시된 오류: ip route flush - No such file or directory") self.manager.logger.debug.assert_any_call("실행: ip route flush") self.assertEqual(self.manager.logger.debug.call_count, 2) @patch('policy_routing.PolicyRoutingManager.run_command') def test_get_network_interfaces(self, mock_run_command): """get_network_interfaces 함수 테스트""" # 시뮬레이션할 ip addr show 출력 mock_run_command.side_effect = [ (True, """ 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever 2: eth0: mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 00:0c:29:12:34:56 brd ff:ff:ff:ff:ff:ff inet 192.168.1.10/24 brd 192.168.1.255 scope global dynamic eth0 valid_lft 86399sec preferred_lft 86399sec inet6 fe80::20c:29ff:fe12:3456/64 scope link valid_lft forever preferred_lft forever 3: eth1: mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 00:0c:29:ab:cd:ef brd ff:ff:ff:ff:ff:ff inet 10.0.0.5/8 brd 10.255.255.255 scope global dynamic eth1 valid_lft 86399sec preferred_lft 86399sec 4: docker0: mtu 1500 qdisc noqueue state DOWN group default link/ether 02:42:1c:00:00:00 brd ff:ff:ff:ff:ff:ff inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0 valid_lft forever preferred_lft forever """), # _find_gateway를 위한 mock (eth0) (True, "default via 192.168.1.1 dev eth0"), # _find_gateway를 위한 mock (eth1) (True, "default via 10.0.0.1 dev eth1") ] interfaces = self.manager.get_network_interfaces() self.assertEqual(len(interfaces), 2) eth0 = next(filter(lambda x: x['name'] == 'eth0', interfaces)) self.assertEqual(eth0['ip'], '192.168.1.10') self.assertEqual(eth0['netmask'], '24') self.assertEqual(eth0['gateway'], '192.168.1.1') self.assertEqual(eth0['state'], 'UP') eth1 = next(filter(lambda x: x['name'] == 'eth1', interfaces)) self.assertEqual(eth1['ip'], '10.0.0.5') self.assertEqual(eth1['netmask'], '8') self.assertEqual(eth1['gateway'], '10.0.0.1') self.assertEqual(eth1['state'], 'UP') # docker0와 lo는 제외되어야 함 self.assertNotIn('docker0', [i['name'] for i in interfaces]) self.assertNotIn('lo', [i['name'] for i in interfaces]) def test__find_gateway(self): """_find_gateway 함수 테스트""" # Case 1: Gateway found in interface-specific route with patch('policy_routing.PolicyRoutingManager.run_command') as mock_run_command: mock_run_command.side_effect = [ (True, "default via 192.168.1.1 dev eth0 proto static") ] self.assertEqual(self.manager._find_gateway("eth0"), "192.168.1.1") mock_run_command.assert_called_once_with(["ip", "route", "show", "dev", "eth0"]) # Case 2: Gateway found in global route after interface-specific fails with patch('policy_routing.PolicyRoutingManager.run_command') as mock_run_command: mock_run_command.side_effect = [ (True, "192.168.1.0/24 dev eth1 proto kernel"), # No default via (True, "default via 10.0.0.1 dev eth1 proto static") # Found in global ] self.assertEqual(self.manager._find_gateway("eth1"), "10.0.0.1") self.assertEqual(mock_run_command.call_count, 2) mock_run_command.assert_has_calls([ mock.call(["ip", "route", "show", "dev", "eth1"]), mock.call(["ip", "route", "show"]) ]) # Case 3: No gateway found (empty output for both) with patch('policy_routing.PolicyRoutingManager.run_command') as mock_run_command: mock_run_command.side_effect = [ (True, ""), # No default via (True, "") # No default via in global ] self.assertIsNone(self.manager._find_gateway("eth2")) self.assertEqual(mock_run_command.call_count, 2) # Case 4: No gateway found (error for both) with patch('policy_routing.PolicyRoutingManager.run_command') as mock_run_command: mock_run_command.side_effect = [ (False, "Error dev"), (False, "Error global") ] self.assertIsNone(self.manager._find_gateway("eth3")) self.assertEqual(mock_run_command.call_count, 2) @patch('policy_routing.PolicyRoutingManager.run_command') def test_apply_interface_routing(self, mock_run_command): """apply_interface_routing 함수 테스트""" interface_info = { "name": "eth0", "ip": "192.168.1.10", "gateway": "192.168.1.1", "netmask": "24", "state": "UP" } table_id = 101 priority = 30100 # run_command의 side_effect를 설정하여 각 호출에 대한 응답을 시뮬레이션 # 순서대로 호출될 명령에 대한 응답을 정의 mock_run_command.side_effect = [ (True, ""), # 1. ip rule del from 192.168.1.10/32 (True, ""), # 2. ip route show table 101 (empty, so flush is skipped) (True, ""), # 3. ip route add network (True, ""), # 4. ip route add default (True, ""), # 5. ip rule add from (True, ""), # 6. ip rule add iif (True, "30100: from 192.168.1.10 lookup 101"), # 7. ip rule show (verification) (True, "default via 192.168.1.1 dev eth0 table 101") # 8. ip route show table 101 (verification) ] success = self.manager.apply_interface_routing(interface_info, table_id, priority) self.assertTrue(success) self.manager.logger.error.assert_not_called() # run_command 호출 검증 expected_calls = [ mock.call(['ip', 'route', 'show', 'table', '101']), # This is the first call mock.call(['ip', 'rule', 'del', 'from', '192.168.1.10/32'], ignore_errors=['No such file or directory']), # This is the second call # mock.call(['ip', 'route', 'flush', 'table', '101'], ignore_errors=['No such file or directory']), # Removed, as table is empty mock.call(['ip', 'route', 'add', '192.168.1.0/24', 'dev', 'eth0', 'src', '192.168.1.10', 'table', '101'], ignore_errors=['File exists']), mock.call(['ip', 'route', 'add', 'default', 'via', '192.168.1.1', 'dev', 'eth0', 'table', '101'], ignore_errors=['File exists']), mock.call(['ip', 'rule', 'add', 'from', '192.168.1.10/32', 'table', '101', 'pref', '30100'], ignore_errors=['File exists']), mock.call(['ip', 'rule', 'add', 'iif', 'eth0', 'table', '101', 'pref', '30101'], ignore_errors=['File exists']), mock.call(['ip', 'rule', 'show']), mock.call(['ip', 'route', 'show', 'table', '101']) ] mock_run_command.assert_has_calls(expected_calls) self.assertEqual(mock_run_command.call_count, len(expected_calls)) if __name__ == '__main__': unittest.main()