unet/scripts/smoke.py at master · andreimaximov/unet · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
#!/usr/bin/env python3

import contextlib
import os
import subprocess
import time
import unittest

DEV_ETH = '06:11:22:33:44:55'
DEV_IP = '10.255.255.102'
GATEWAY_IP = '10.255.255.101'
UNKNOWN_IP = '10.255.255.103'
GOOGLE_DNS_IP = '8.8.8.8'


class SubprocessError(Exception):
    def __init__(self, subprocess_err):
        self._subprocess_err = subprocess_err

    def __str__(self):
        stdout = self._subprocess_err.stdout
        stderr = self._subprocess_err.stderr
        return 'err: {}, stdout: {}, stderr: {}'.format(
            self._subprocess_err,
            str(stdout, 'ascii') if stdout is not None else '',
            str(stderr, 'ascii') if stderr is not None else '')


def pathToExample(name):
    build = os.getenv('MESON_BUILD_ROOT', os.getcwd())
    example = os.path.join(build, name)
    if not os.path.exists(example):
        raise RuntimeError('{} not found!'.format(name))
    return example


def runAndCheck(command):
    try:
        out = subprocess.run(
            command,
            check=True,
            stderr=subprocess.PIPE,
            stdout=subprocess.PIPE,
            timeout=10).stdout
        return str(out, 'ascii')
    except subprocess.CalledProcessError as e:
        raise SubprocessError(e)


@contextlib.contextmanager
def runNetworkStack():
    process = subprocess.Popen(pathToExample('stack'))
    time.sleep(1)
    err = None
    if process.poll() is not None:
        raise RuntimeError('Network stack could not be started!')
    try:
        yield
    except Exception as ex:
        err = ex
    process.kill()
    process.wait()
    if err is not None:
        raise err


class SmokeTest(unittest.TestCase):
    '''High level smoke tests for the network stack.

    These should be run via ninja smoke from your meson build directory.
    '''

    def testTap(self):
        runAndCheck(pathToExample('tap'))

    def testArpingReply(self):
        with runNetworkStack():
            stdout = runAndCheck(
                ['sudo', 'arping', DEV_IP, '-i', 'tap0', '-c', '1'])
            self.assertIn(DEV_ETH, stdout)

    def testArpingSelf(self):
        stdout = runAndCheck(
            [pathToExample('arping'), '--addr', DEV_IP, '--count', '4'])
        self.assertRegex(stdout, (
            '28 bytes from 06:11:22:33:44:55 \(10.255.255.102\) index=1 time=\d+ ms\n'
            '28 bytes from 06:11:22:33:44:55 \(10.255.255.102\) index=2 time=\d+ ms\n'
            '28 bytes from 06:11:22:33:44:55 \(10.255.255.102\) index=3 time=\d+ ms\n'
            '28 bytes from 06:11:22:33:44:55 \(10.255.255.102\) index=4 time=\d+ ms\n'
        ))

    def testArpingGateway(self):
        stdout = runAndCheck(
            [pathToExample('arping'), '--addr', GATEWAY_IP, '--count', '4'])
        self.assertRegex(
            stdout,
            ('28 bytes from \S{17} \(10.255.255.101\) index=1 time=\d+ ms\n'
             '28 bytes from \S{17} \(10.255.255.101\) index=2 time=\d+ ms\n'
             '28 bytes from \S{17} \(10.255.255.101\) index=3 time=\d+ ms\n'
             '28 bytes from \S{17} \(10.255.255.101\) index=4 time=\d+ ms\n'))

    def testArpingUnknown(self):
        stdout = runAndCheck(
            [pathToExample('arping'), '--addr', UNKNOWN_IP, '--count', '4'])
        self.assertEqual(stdout, ('Timeout\n'
                                  'Timeout\n'
                                  'Timeout\n'
                                  'Timeout\n'))

    def testPingReply(self):
        with runNetworkStack():
            stdout = runAndCheck(['ping', DEV_IP, '-c', '1'])
            self.assertIn(DEV_IP, stdout)

    def testPingSelf(self):
        stdout = runAndCheck(
            [pathToExample('ping'), '--addr', DEV_IP, '--count', '4'])
        self.assertRegex(
            stdout,
            ('64 bytes from 10.255.255.102: icmp_seq=1 ttl=64 time=\d+ ms\n'
             '64 bytes from 10.255.255.102: icmp_seq=2 ttl=64 time=\d+ ms\n'
             '64 bytes from 10.255.255.102: icmp_seq=3 ttl=64 time=\d+ ms\n'
             '64 bytes from 10.255.255.102: icmp_seq=4 ttl=64 time=\d+ ms\n'))

    def testPingGateway(self):
        stdout = runAndCheck(
            [pathToExample('ping'), '--addr', GATEWAY_IP, '--count', '4'])
        self.assertRegex(
            stdout,
            ('64 bytes from 10.255.255.101: icmp_seq=1 ttl=64 time=\d+ ms\n'
             '64 bytes from 10.255.255.101: icmp_seq=2 ttl=64 time=\d+ ms\n'
             '64 bytes from 10.255.255.101: icmp_seq=3 ttl=64 time=\d+ ms\n'
             '64 bytes from 10.255.255.101: icmp_seq=4 ttl=64 time=\d+ ms\n'))

    def testPingGoogleDNS(self):
        stdout = runAndCheck(
            [pathToExample('ping'), '--addr', GOOGLE_DNS_IP, '--count', '4'])
        self.assertRegex(
            stdout,
            ('64 bytes from 8.8.8.8: icmp_seq=1 ttl=\d+ time=\d+ ms\n'
             '64 bytes from 8.8.8.8: icmp_seq=2 ttl=\d+ time=\d+ ms\n'
             '64 bytes from 8.8.8.8: icmp_seq=3 ttl=\d+ time=\d+ ms\n'
             '64 bytes from 8.8.8.8: icmp_seq=4 ttl=\d+ time=\d+ ms\n'))

    def testPingUnknown(self):
        stdout = runAndCheck(
            [pathToExample('ping'), '--addr', UNKNOWN_IP, '--count', '4'])
        self.assertEqual(stdout, ('Timeout\n'
                                  'Timeout\n'
                                  'Timeout\n'
                                  'Timeout\n'))

    def testPingHugePayload(self):
        stdout = runAndCheck([
            pathToExample('ping'), '--addr', GOOGLE_DNS_IP, '--count', '4',
            '--payload', '16384'
        ])
        self.assertEqual(stdout, ('Timeout\n'
                                  'Timeout\n'
                                  'Timeout\n'
                                  'Timeout\n'))


if __name__ == '__main__':
    unittest.main()