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How to use test_enable method in avocado

Best Python code snippet using avocado_python
unit-config
Source:unit-config
1#!/usr/bin/python32# autopkgtest check: enable/disable/configure units3# (C) 2015 Canonical Ltd.4# Author: Martin Pitt <martin.pitt@ubuntu.com>5import unittest6import subprocess7import os8import sys9import tempfile10from glob import glob11system_unit_dir = subprocess.check_output(12    ['pkg-config', '--variable=systemdsystemunitdir', 'systemd'],13    universal_newlines=True).strip()14systemd_sysv_install = os.path.join(os.path.dirname(system_unit_dir),15                                    'systemd-sysv-install')16class EnableTests(unittest.TestCase):17    def tearDown(self):18        # remove all traces from our test unit19        f = glob(system_unit_dir + '/test_enable*.service')20        f += glob(system_unit_dir + '/*/test_enable*.service')21        f += glob('/etc/systemd/system/test_enable*.service')22        f += glob('/etc/systemd/system/*/test_enable*.service')23        f += glob('/etc/init.d/test_enable*')24        f += glob('/etc/rc?.d/???test_enable*')25        [os.unlink(i) for i in f]26        subprocess.check_call(['systemctl', 'daemon-reload'])27    def create_unit(self, suffix='', enable=False):28        '''Create a test unit'''29        unit = os.path.join(system_unit_dir,30                            'test_enable%s.service' % suffix)31        with open(unit, 'w') as f:32            f.write('''[Unit]33Description=Testsuite unit %s34[Service]35ExecStart=/bin/echo hello36[Install]37WantedBy=multi-user.target38''' % suffix)39        if enable:40            os.symlink(unit, '/etc/systemd/system/multi-user.target.wants/' +41                       os.path.basename(unit))42        return unit43    def create_sysv(self, suffix='', enable=False):44        '''Create a test SysV script'''45        script = '/etc/init.d/test_enable%s' % suffix46        with open(script, 'w') as f:47            f.write('''/bin/sh48### BEGIN INIT INFO49# Provides:          test_enable%s50# Required-Start:    $remote_fs $syslog51# Required-Stop:     $remote_fs $syslog52# Default-Start:     2 3 4 553# Default-Stop:      0 1 654# Short-Description: Testsuite script%s55### END INIT INFO56echo hello57''' % (suffix, suffix))58        os.chmod(script, 0o755)59        if enable:60            subprocess.check_call(61                [systemd_sysv_install, 'enable', os.path.basename(script)])62    def assertEnabled(self, enabled, unit='test_enable.service'):63        '''assert that given unit has expected state'''64        systemctl = subprocess.Popen(['systemctl', 'is-enabled', unit],65                                     stdout=subprocess.PIPE,66                                     universal_newlines=True)67        out = systemctl.communicate()[0].strip()68        if enabled:69            self.assertEqual(systemctl.returncode, 0)70            self.assertEqual(out, 'enabled')71        else:72            self.assertEqual(systemctl.returncode, 1)73            self.assertEqual(out, 'disabled')74    def test_unit_enable(self):75        '''no sysv: enable unit'''76        self.create_unit()77        self.assertEnabled(False)78        # also works without .service suffix79        self.assertEnabled(False, unit='test_enable')80        subprocess.check_call(['systemctl', 'enable', 'test_enable'])81        self.assertEnabled(True)82        # also works without .service suffix83        self.assertEnabled(True, unit='test_enable')84        l = '/etc/systemd/system/multi-user.target.wants/test_enable.service'85        self.assertTrue(os.path.islink(l))86        self.assertEqual(os.readlink(l),87                         system_unit_dir + '/test_enable.service')88        # enable should be idempotent89        subprocess.check_call(['systemctl', 'enable', 'test_enable.service'])90        self.assertEnabled(True)91    def test_unit_disable(self):92        '''no sysv: disable unit'''93        self.create_unit(enable=True)94        self.assertEnabled(True)95        # also works without .service suffix96        self.assertEnabled(True, unit='test_enable')97        subprocess.check_call(['systemctl', 'disable', 'test_enable'])98        self.assertEnabled(False)99        # also works without .service suffix100        self.assertEnabled(False, unit='test_enable')101        l = '/etc/systemd/system/multi-user.target.wants/test_enable.service'102        self.assertFalse(os.path.islink(l))103        # disable should be idempotent104        subprocess.check_call(['systemctl', 'disable', 'test_enable.service'])105        self.assertEnabled(False)106    def test_unit_sysv_enable(self):107        '''with sysv: enable unit'''108        self.create_unit()109        self.create_sysv()110        self.assertEnabled(False)111        # also works without .service suffix112        self.assertEnabled(False, unit='test_enable')113        subprocess.check_call(['systemctl', 'enable', 'test_enable'])114        self.assertEnabled(True)115        # also works without .service suffix116        self.assertEnabled(True, unit='test_enable')117        l = '/etc/systemd/system/multi-user.target.wants/test_enable.service'118        self.assertTrue(os.path.islink(l))119        self.assertEqual(os.readlink(l),120                         system_unit_dir + '/test_enable.service')121        # enabled the sysv script122        l = glob('/etc/rc2.d/S??test_enable')123        self.assertEqual(len(l), 1, 'expect one symlink in %s' % repr(l))124        self.assertEqual(os.readlink(l[0]), '../init.d/test_enable')125        # enable should be idempotent126        subprocess.check_call(['systemctl', 'enable', 'test_enable.service'])127        self.assertEnabled(True)128    def test_unit_sysv_disable(self):129        '''with sysv: disable unit'''130        self.create_unit(enable=True)131        self.create_sysv(enable=True)132        self.assertEnabled(True)133        # also works without .service suffix134        self.assertEnabled(True, unit='test_enable')135        subprocess.check_call(['systemctl', 'disable', 'test_enable'])136        self.assertEnabled(False)137        # also works without .service suffix138        self.assertEnabled(False, unit='test_enable')139        l = '/etc/systemd/system/multi-user.target.wants/test_enable.service'140        self.assertFalse(os.path.islink(l))141        # disabled the sysv script142        l = glob('/etc/rc2.d/S??test_enable')143        self.assertEqual(l, [])144        # disable should be idempotent145        subprocess.check_call(['systemctl', 'enable', 'test_enable.service'])146        self.assertEnabled(True)147    def test_unit_alias_enable(self):148        '''no sysv: enable unit with an alias'''149        u = self.create_unit()150        with open(u, 'a') as f:151            f.write('Alias=test_enablea.service\n')152        self.assertEnabled(False)153        subprocess.check_call(['systemctl', 'enable', 'test_enable'])154        self.assertEnabled(True)155        # enablement symlink156        l = '/etc/systemd/system/multi-user.target.wants/test_enable.service'157        self.assertTrue(os.path.islink(l))158        self.assertEqual(os.readlink(l),159                         system_unit_dir + '/test_enable.service')160        # alias symlink161        l = '/etc/systemd/system/test_enablea.service'162        self.assertTrue(os.path.islink(l))163        self.assertEqual(os.readlink(l),164                         system_unit_dir + '/test_enable.service')165    def test_unit_alias_disable(self):166        '''no sysv: disable unit with an alias'''167        u = self.create_unit()168        with open(u, 'a') as f:169            f.write('Alias=test_enablea.service\n')170        os.symlink(system_unit_dir + '/test_enable.service',171                   '/etc/systemd/system/test_enablea.service')172        subprocess.check_call(['systemctl', 'disable', 'test_enable'])173        self.assertEnabled(False)174        # enablement symlink175        l = '/etc/systemd/system/multi-user.target.wants/test_enable.service'176        self.assertFalse(os.path.islink(l))177        # alias symlink178        l = '/etc/systemd/system/test_enablea.service'179        self.assertFalse(os.path.islink(l))180    def test_unit_sysv_alias_enable(self):181        '''with sysv: enable unit with an alias'''182        u = self.create_unit()183        with open(u, 'a') as f:184            f.write('Alias=test_enablea.service\n')185        self.create_sysv()186        self.assertEnabled(False)187        subprocess.check_call(['systemctl', 'enable', 'test_enable'])188        # enablement symlink189        l = '/etc/systemd/system/multi-user.target.wants/test_enable.service'190        self.assertTrue(os.path.islink(l))191        self.assertEqual(os.readlink(l),192                         system_unit_dir + '/test_enable.service')193        # alias symlink194        l = '/etc/systemd/system/test_enablea.service'195        self.assertTrue(os.path.islink(l))196        self.assertEqual(os.readlink(l),197                         system_unit_dir + '/test_enable.service')198        # enabled the sysv script199        l = glob('/etc/rc2.d/S??test_enable')200        self.assertEqual(len(l), 1, 'expect one symlink in %s' % repr(l))201        self.assertEqual(os.readlink(l[0]), '../init.d/test_enable')202        self.assertEnabled(True)203    def test_unit_sysv_alias_disable(self):204        '''with sysv: disable unit with an alias'''205        u = self.create_unit(enable=True)206        with open(u, 'a') as f:207            f.write('Alias=test_enablea.service\n')208        os.symlink(system_unit_dir + '/test_enable.service',209                   '/etc/systemd/system/test_enablea.service')210        self.create_sysv(enable=True)211        subprocess.check_call(['systemctl', 'disable', 'test_enable'])212        # enablement symlink213        l = '/etc/systemd/system/multi-user.target.wants/test_enable.service'214        self.assertFalse(os.path.islink(l))215        # alias symlink216        l = '/etc/systemd/system/test_enablea.service'217        self.assertFalse(os.path.islink(l))218        # disabled the sysv script219        l = glob('/etc/rc2.d/S??test_enable')220        self.assertEqual(l, [])221        self.assertEnabled(False)222    def test_sysv_enable(self):223        '''only sysv: enable'''224        self.create_sysv()225        subprocess.check_call(['systemctl', 'enable', 'test_enable'])226        # enabled the sysv script227        l = glob('/etc/rc2.d/S??test_enable')228        self.assertEqual(len(l), 1, 'expect one symlink in %s' % repr(l))229        self.assertEqual(os.readlink(l[0]), '../init.d/test_enable')230        # enable should be idempotent231        subprocess.check_call(['systemctl', 'enable', 'test_enable'])232        self.assertEnabled(True)233    def test_sysv_disable(self):234        '''only sysv: disable'''235        self.create_sysv(enable=True)236        subprocess.check_call(['systemctl', 'disable', 'test_enable'])237        # disabled the sysv script238        l = glob('/etc/rc2.d/S??test_enable')239        self.assertEqual(l, [])240        # disable should be idempotent241        subprocess.check_call(['systemctl', 'disable', 'test_enable'])242        self.assertEnabled(False)243    def test_unit_link(self):244        '''systemctl link'''245        with tempfile.NamedTemporaryFile(suffix='.service') as f:246            f.write(b'[Unit]\n')247            f.flush()248            subprocess.check_call(['systemctl', 'link', f.name])249            unit = os.path.basename(f.name)250            l = os.path.join('/etc/systemd/system', unit)251            self.assertEqual(os.readlink(l), f.name)252            # disable it again253            subprocess.check_call(['systemctl', 'disable', unit])254            # this should also remove the unit symlink255            self.assertFalse(os.path.islink(l))256    def test_unit_enable_full_path(self):257        '''systemctl enable a unit in a non-default path'''258        with tempfile.NamedTemporaryFile(suffix='.service') as f:259            f.write(b'''[Unit]260Description=test261[Service]262ExecStart=/bin/true263[Install]264WantedBy=multi-user.target''')265            f.flush()266            unit = os.path.basename(f.name)267            # now enable it268            subprocess.check_call(['systemctl', 'enable', f.name])269            self.assertEnabled(True, unit=unit)270            l = os.path.join('/etc/systemd/system', unit)271            self.assertEqual(os.readlink(l), f.name)272            enable_l = '/etc/systemd/system/multi-user.target.wants/' + unit273            self.assertEqual(os.readlink(enable_l), f.name)274            # disable it again275            subprocess.check_call(['systemctl', 'disable', unit])276            # self.assertEnabled(False) does not work as now systemd does not277            # know about the unit at all any more278            self.assertFalse(os.path.islink(enable_l))279            # this should also remove the unit symlink280            self.assertFalse(os.path.islink(l))281if __name__ == '__main__':282    unittest.main(testRunner=unittest.TextTestRunner(stream=sys.stdout,...
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