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3e67e5c992
This is useful on systems like NixOS, where python3 is not in /usr/bin/python3 as well as for people using alternative ways to install python such as virtualenv/pyenv.
193 lines
5.6 KiB
Python
Executable File
193 lines
5.6 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# Copyright 2017 Michal Sekletar <msekleta@redhat.com>
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#
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# systemd is free software; you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation; either version 2.1 of the License, or
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# (at your option) any later version.
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#
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# systemd is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with systemd; If not, see <http://www.gnu.org/licenses/>.
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# ATTENTION: This uses the *installed* systemd, not the one from the built
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# source tree.
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import unittest
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import time
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import os
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import tempfile
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import subprocess
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from enum import Enum
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class UnitFileChange(Enum):
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NO_CHANGE = 0
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LINES_SWAPPED = 1
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COMMAND_ADDED_BEFORE = 2
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COMMAND_ADDED_AFTER = 3
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COMMAND_INTERLEAVED = 4
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REMOVAL = 5
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class ExecutionResumeTest(unittest.TestCase):
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def setUp(self):
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self.unit = 'test-issue-518.service'
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self.unitfile_path = '/run/systemd/system/{0}'.format(self.unit)
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self.output_file = tempfile.mktemp()
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self.unit_files = {}
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unit_file_content = '''
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[Service]
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Type=oneshot
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ExecStart=/bin/sleep 2
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ExecStart=/bin/bash -c "echo foo >> {0}"
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'''.format(self.output_file)
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self.unit_files[UnitFileChange.NO_CHANGE] = unit_file_content
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unit_file_content = '''
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[Service]
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Type=oneshot
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ExecStart=/bin/bash -c "echo foo >> {0}"
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ExecStart=/bin/sleep 2
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'''.format(self.output_file)
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self.unit_files[UnitFileChange.LINES_SWAPPED] = unit_file_content
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unit_file_content = '''
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[Service]
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Type=oneshot
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ExecStart=/bin/bash -c "echo bar >> {0}"
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ExecStart=/bin/sleep 2
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ExecStart=/bin/bash -c "echo foo >> {0}"
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'''.format(self.output_file)
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self.unit_files[UnitFileChange.COMMAND_ADDED_BEFORE] = unit_file_content
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unit_file_content = '''
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[Service]
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Type=oneshot
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ExecStart=/bin/sleep 2
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ExecStart=/bin/bash -c "echo foo >> {0}"
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ExecStart=/bin/bash -c "echo bar >> {0}"
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'''.format(self.output_file)
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self.unit_files[UnitFileChange.COMMAND_ADDED_AFTER] = unit_file_content
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unit_file_content = '''
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[Service]
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Type=oneshot
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ExecStart=/bin/bash -c "echo baz >> {0}"
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ExecStart=/bin/sleep 2
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ExecStart=/bin/bash -c "echo foo >> {0}"
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ExecStart=/bin/bash -c "echo bar >> {0}"
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'''.format(self.output_file)
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self.unit_files[UnitFileChange.COMMAND_INTERLEAVED] = unit_file_content
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unit_file_content = '''
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[Service]
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Type=oneshot
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ExecStart=/bin/bash -c "echo bar >> {0}"
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ExecStart=/bin/bash -c "echo baz >> {0}"
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'''.format(self.output_file)
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self.unit_files[UnitFileChange.REMOVAL] = unit_file_content
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def reload(self):
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subprocess.check_call(['systemctl', 'daemon-reload'])
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def write_unit_file(self, unit_file_change):
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if not isinstance(unit_file_change, UnitFileChange):
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raise ValueError('Unknown unit file change')
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content = self.unit_files[unit_file_change]
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with open(self.unitfile_path, 'w') as f:
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f.write(content)
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self.reload()
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def check_output(self, expected_output):
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try:
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with open(self.output_file, 'r') as log:
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output = log.read()
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except IOError:
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self.fail()
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self.assertEqual(output, expected_output)
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def setup_unit(self):
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self.write_unit_file(UnitFileChange.NO_CHANGE)
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subprocess.check_call(['systemctl', '--job-mode=replace', '--no-block', 'start', self.unit])
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def test_no_change(self):
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expected_output = 'foo\n'
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self.setup_unit()
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self.reload()
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time.sleep(4)
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self.check_output(expected_output)
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def test_swapped(self):
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expected_output = ''
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self.setup_unit()
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self.write_unit_file(UnitFileChange.LINES_SWAPPED)
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self.reload()
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time.sleep(4)
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self.assertTrue(not os.path.exists(self.output_file))
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def test_added_before(self):
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expected_output = 'foo\n'
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self.setup_unit()
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self.write_unit_file(UnitFileChange.COMMAND_ADDED_BEFORE)
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self.reload()
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time.sleep(4)
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self.check_output(expected_output)
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def test_added_after(self):
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expected_output = 'foo\nbar\n'
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self.setup_unit()
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self.write_unit_file(UnitFileChange.COMMAND_ADDED_AFTER)
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self.reload()
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time.sleep(4)
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self.check_output(expected_output)
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def test_interleaved(self):
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expected_output = 'foo\nbar\n'
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self.setup_unit()
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self.write_unit_file(UnitFileChange.COMMAND_INTERLEAVED)
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self.reload()
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time.sleep(4)
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self.check_output(expected_output)
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def test_removal(self):
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self.setup_unit()
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self.write_unit_file(UnitFileChange.REMOVAL)
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self.reload()
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time.sleep(4)
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self.assertTrue(not os.path.exists(self.output_file))
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def tearDown(self):
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for f in [self.output_file, self.unitfile_path]:
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try:
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os.remove(f)
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except OSError:
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# ignore error if log file doesn't exist
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pass
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self.reload()
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if __name__ == '__main__':
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unittest.main()
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