770 lines
25 KiB
Python
770 lines
25 KiB
Python
#!/usr/bin/python2 -O
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# vim: fileencoding=utf-8
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#
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# The Qubes OS Project, https://www.qubes-os.org/
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#
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# Copyright (C) 2014-2015
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# Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
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# Copyright (C) 2015 Wojtek Porczyk <woju@invisiblethingslab.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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"""
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.. warning::
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The test suite hereby claims any domain whose name starts with
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:py:data:`VMPREFIX` as fair game. This is needed to enforce sane
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test executing environment. If you have domains named ``test-*``,
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don't run the tests.
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"""
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from distutils import spawn
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import functools
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import multiprocessing
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import logging
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import os
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import shutil
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import subprocess
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import tempfile
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import unittest
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import unittest.case
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import lxml.etree
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import sys
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import pkg_resources
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import qubes.backup
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import qubes.qubes
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import time
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VMPREFIX = 'test-inst-'
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CLSVMPREFIX = 'test-cls-'
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#: :py:obj:`True` if running in dom0, :py:obj:`False` otherwise
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in_dom0 = False
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#: :py:obj:`False` if outside of git repo,
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#: path to root of the directory otherwise
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in_git = False
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try:
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import libvirt
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libvirt.openReadOnly(qubes.qubes.defaults['libvirt_uri']).close()
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in_dom0 = True
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except libvirt.libvirtError:
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pass
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try:
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in_git = subprocess.check_output(
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['git', 'rev-parse', '--show-toplevel'],
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stderr=open(os.devnull, 'w')).strip()
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except subprocess.CalledProcessError:
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# git returned nonzero, we are outside git repo
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pass
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except OSError:
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# command not found; let's assume we're outside
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pass
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def skipUnlessDom0(test_item):
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'''Decorator that skips test outside dom0.
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Some tests (especially integration tests) have to be run in more or less
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working dom0. This is checked by connecting to libvirt.
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''' # pylint: disable=invalid-name
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return unittest.skipUnless(in_dom0, 'outside dom0')(test_item)
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def skipUnlessGit(test_item):
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'''Decorator that skips test outside git repo.
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There are very few tests that an be run only in git. One example is
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correctness of example code that won't get included in RPM.
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''' # pylint: disable=invalid-name
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return unittest.skipUnless(in_git, 'outside git tree')(test_item)
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def expectedFailureIfTemplate(templates):
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"""
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Decorator for marking specific test as expected to fail only for some
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templates. Template name is compared as substring, so 'whonix' will
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handle both 'whonix-ws' and 'whonix-gw'.
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templates can be either a single string, or an iterable
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"""
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def decorator(func):
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@functools.wraps(func)
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def wrapper(self, *args, **kwargs):
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template = self.template
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if isinstance(templates, basestring):
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should_expect_fail = template in templates
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else:
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should_expect_fail = any([template in x for x in templates])
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if should_expect_fail:
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try:
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func(self, *args, **kwargs)
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except Exception:
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raise unittest.case._ExpectedFailure(sys.exc_info())
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raise unittest.case._UnexpectedSuccess()
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else:
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# Call directly:
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func(self, *args, **kwargs)
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return wrapper
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return decorator
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class _AssertNotRaisesContext(object):
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"""A context manager used to implement TestCase.assertNotRaises methods.
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Stolen from unittest and hacked. Regexp support stripped.
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"""
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def __init__(self, expected, test_case, expected_regexp=None):
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self.expected = expected
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self.failureException = test_case.failureException
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def __enter__(self):
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return self
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def __exit__(self, exc_type, exc_value, tb):
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if exc_type is None:
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return True
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try:
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exc_name = self.expected.__name__
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except AttributeError:
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exc_name = str(self.expected)
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if issubclass(exc_type, self.expected):
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raise self.failureException(
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"{0} raised".format(exc_name))
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else:
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# pass through
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return False
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self.exception = exc_value # store for later retrieval
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class BeforeCleanExit(BaseException):
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pass
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class QubesTestCase(unittest.TestCase):
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'''Base class for Qubes unit tests.
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'''
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def __init__(self, *args, **kwargs):
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super(QubesTestCase, self).__init__(*args, **kwargs)
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self.longMessage = True
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self.log = logging.getLogger('{}.{}.{}'.format(
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self.__class__.__module__,
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self.__class__.__name__,
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self._testMethodName))
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def __str__(self):
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return '{}/{}/{}'.format(
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self.__class__.__module__,
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self.__class__.__name__,
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self._testMethodName)
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def tearDown(self):
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super(QubesTestCase, self).tearDown()
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result = self._resultForDoCleanups
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l = result.failures \
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+ result.errors \
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+ [(tc, None) for tc in result.unexpectedSuccesses]
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if getattr(result, 'do_not_clean', False) \
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and filter((lambda (tc, exc): tc is self), l):
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raise BeforeCleanExit()
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def assertNotRaises(self, excClass, callableObj=None, *args, **kwargs):
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"""Fail if an exception of class excClass is raised
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by callableObj when invoked with arguments args and keyword
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arguments kwargs. If a different type of exception is
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raised, it will not be caught, and the test case will be
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deemed to have suffered an error, exactly as for an
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unexpected exception.
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If called with callableObj omitted or None, will return a
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context object used like this::
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with self.assertRaises(SomeException):
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do_something()
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The context manager keeps a reference to the exception as
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the 'exception' attribute. This allows you to inspect the
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exception after the assertion::
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with self.assertRaises(SomeException) as cm:
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do_something()
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the_exception = cm.exception
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self.assertEqual(the_exception.error_code, 3)
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"""
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context = _AssertNotRaisesContext(excClass, self)
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if callableObj is None:
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return context
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with context:
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callableObj(*args, **kwargs)
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def assertXMLEqual(self, xml1, xml2):
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"""Check for equality of two XML objects.
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:param xml1: first element
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:param xml2: second element
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:type xml1: :py:class:`lxml.etree._Element`
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:type xml2: :py:class:`lxml.etree._Element`
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""" # pylint: disable=invalid-name
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self.assertEqual(xml1.tag, xml2.tag)
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self.assertEqual(xml1.text, xml2.text)
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self.assertItemsEqual(xml1.keys(), xml2.keys())
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for key in xml1.keys():
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self.assertEqual(xml1.get(key), xml2.get(key))
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class SystemTestsMixin(object):
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def setUp(self):
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"""Set up the test.
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.. warning::
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This method instantiates QubesVmCollection acquires write lock for
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it. You can use is as :py:attr:`qc`. You can (and probably
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should) release the lock at the end of setUp in subclass
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"""
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super(SystemTestsMixin, self).setUp()
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self.qc = qubes.qubes.QubesVmCollection()
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self.qc.lock_db_for_writing()
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self.qc.load()
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self.conn = libvirt.open(qubes.qubes.defaults['libvirt_uri'])
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self._remove_test_vms(self.qc, self.conn)
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def tearDown(self):
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super(SystemTestsMixin, self).tearDown()
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# release the lock, because we have no way to check whether it was
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# read or write lock
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try:
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self.qc.unlock_db()
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except qubes.qubes.QubesException:
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pass
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self._kill_test_vms(self.qc)
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self.qc.lock_db_for_writing()
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self.qc.load()
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self._remove_test_vms(self.qc, self.conn)
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self.qc.save()
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self.qc.unlock_db()
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del self.qc
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self.conn.close()
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@classmethod
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def tearDownClass(cls):
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super(SystemTestsMixin, cls).tearDownClass()
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qc = qubes.qubes.QubesVmCollection()
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qc.lock_db_for_reading()
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qc.load()
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qc.unlock_db()
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conn = libvirt.open(qubes.qubes.defaults['libvirt_uri'])
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cls._kill_test_vms(qc, prefix=CLSVMPREFIX)
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qc.lock_db_for_writing()
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qc.load()
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cls._remove_test_vms(qc, conn, prefix=CLSVMPREFIX)
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qc.save()
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qc.unlock_db()
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del qc
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conn.close()
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@staticmethod
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def make_vm_name(name, class_teardown=False):
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if class_teardown:
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return CLSVMPREFIX + name
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else:
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return VMPREFIX + name
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def save_and_reload_db(self):
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self.qc.save()
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self.qc.unlock_db()
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self.qc.lock_db_for_writing()
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self.qc.load()
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@staticmethod
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def _kill_test_vms(qc, prefix=VMPREFIX):
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# do not keep write lock while killing VMs, because that may cause a
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# deadlock with disk hotplug scripts (namely qvm-template-commit
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# called when shutting down TemplateVm)
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qc.lock_db_for_reading()
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qc.load()
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qc.unlock_db()
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for vm in qc.values():
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if vm.name.startswith(prefix):
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if vm.is_running():
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vm.force_shutdown()
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@classmethod
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def _remove_vm_qubes(cls, qc, conn, vm):
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vmname = vm.name
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try:
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# XXX .is_running() may throw libvirtError if undefined
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if vm.is_running():
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vm.force_shutdown()
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except:
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pass
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try:
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vm.remove_from_disk()
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except:
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pass
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try:
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vm.libvirt_domain.undefine()
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except libvirt.libvirtError:
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pass
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qc.pop(vm.qid)
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del vm
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# Now ensure it really went away. This may not have happened,
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# for example if vm.libvirtDomain malfunctioned.
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try:
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dom = conn.lookupByName(vmname)
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except:
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pass
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else:
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cls._remove_vm_libvirt(dom)
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cls._remove_vm_disk(vmname)
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@staticmethod
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def _remove_vm_libvirt(dom):
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try:
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dom.destroy()
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except libvirt.libvirtError: # not running
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pass
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dom.undefine()
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@staticmethod
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def _remove_vm_disk(vmname):
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for dirspec in (
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'qubes_appvms_dir',
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'qubes_servicevms_dir',
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'qubes_templates_dir'):
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dirpath = os.path.join(qubes.qubes.system_path['qubes_base_dir'],
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qubes.qubes.system_path[dirspec], vmname)
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if os.path.exists(dirpath):
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if os.path.isdir(dirpath):
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shutil.rmtree(dirpath)
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else:
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os.unlink(dirpath)
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def remove_vms(self, vms):
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for vm in vms:
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self._remove_vm_qubes(self.qc, self.conn, vm)
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self.save_and_reload_db()
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@classmethod
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def _remove_test_vms(cls, qc, conn, prefix=VMPREFIX):
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"""Aggresively remove any domain that has name in testing namespace.
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"""
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# first, remove them Qubes-way
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something_removed = False
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for vm in qc.values():
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if vm.name.startswith(prefix):
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cls._remove_vm_qubes(qc, conn, vm)
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something_removed = True
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if something_removed:
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qc.save()
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qc.unlock_db()
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qc.lock_db_for_writing()
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qc.load()
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# now remove what was only in libvirt
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for dom in conn.listAllDomains():
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if dom.name().startswith(prefix):
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cls._remove_vm_libvirt(dom)
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# finally remove anything that is left on disk
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vmnames = set()
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for dirspec in (
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'qubes_appvms_dir',
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'qubes_servicevms_dir',
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'qubes_templates_dir'):
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dirpath = os.path.join(qubes.qubes.system_path['qubes_base_dir'],
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qubes.qubes.system_path[dirspec])
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for name in os.listdir(dirpath):
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if name.startswith(prefix):
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vmnames.add(name)
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for vmname in vmnames:
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cls._remove_vm_disk(vmname)
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def qrexec_policy(self, service, source, destination, allow=True):
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"""
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Allow qrexec calls for duration of the test
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:param service: service name
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:param source: source VM name
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:param destination: destination VM name
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:return:
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"""
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def add_remove_rule(add=True):
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with open('/etc/qubes-rpc/policy/{}'.format(service), 'r+') as policy:
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policy_rules = policy.readlines()
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rule = "{} {} {}\n".format(source, destination,
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'allow' if allow else 'deny')
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if add:
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policy_rules.insert(0, rule)
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else:
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policy_rules.remove(rule)
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policy.truncate(0)
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policy.seek(0)
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policy.write(''.join(policy_rules))
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add_remove_rule(add=True)
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self.addCleanup(add_remove_rule, add=False)
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def wait_for_window(self, title, timeout=30, show=True):
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"""
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Wait for a window with a given title. Depending on show parameter,
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it will wait for either window to show or to disappear.
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:param title: title of the window to wait for
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:param timeout: timeout of the operation, in seconds
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:param show: if True - wait for the window to be visible,
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otherwise - to not be visible
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:return: None
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"""
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wait_count = 0
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while subprocess.call(['xdotool', 'search', '--name', title],
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stdout=open(os.path.devnull, 'w'),
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stderr=subprocess.STDOUT) == int(show):
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wait_count += 1
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if wait_count > timeout*10:
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self.fail("Timeout while waiting for {} window to {}".format(
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title, "show" if show else "hide")
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)
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time.sleep(0.1)
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def enter_keys_in_window(self, title, keys):
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"""
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Search for window with given title, then enter listed keys there.
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The function will wait for said window to appear.
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:param title: title of window
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:param keys: list of keys to enter, as for `xdotool key`
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:return: None
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"""
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# 'xdotool search --sync' sometimes crashes on some race when
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# accessing window properties
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self.wait_for_window(title)
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command = ['xdotool', 'search', '--name', title,
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'windowactivate', '--sync',
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'key'] + keys
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subprocess.check_call(command)
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def shutdown_and_wait(self, vm, timeout=60):
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"""
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:param vm: VM object
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:param timeout: timeout after which fail the test
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:return:
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"""
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vm.shutdown()
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while timeout > 0:
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if not vm.is_running():
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return
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time.sleep(1)
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timeout -= 1
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self.fail("Timeout while waiting for VM {} shutdown".format(vm.name))
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def prepare_hvm_system_linux(self, vm, init_script, extra_files=None):
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if not os.path.exists('/usr/lib/grub/i386-pc'):
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self.skipTest('grub2 not installed')
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if not spawn.find_executable('grub2-install'):
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self.skipTest('grub2-tools not installed')
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if not spawn.find_executable('dracut'):
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self.skipTest('dracut not installed')
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# create a single partition
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p = subprocess.Popen(['sfdisk', '-q', '-L', vm.storage.root_img],
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stdin=subprocess.PIPE,
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stdout=open(os.devnull, 'w'),
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stderr=subprocess.STDOUT)
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p.communicate('2048,\n')
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assert p.returncode == 0, 'sfdisk failed'
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# TODO: check if root_img is really file, not already block device
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p = subprocess.Popen(['sudo', 'losetup', '-f', '-P', '--show',
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vm.storage.root_img], stdout=subprocess.PIPE)
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(loopdev, _) = p.communicate()
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loopdev = loopdev.strip()
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looppart = loopdev + 'p1'
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assert p.returncode == 0, 'losetup failed'
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subprocess.check_call(['sudo', 'mkfs.ext2', '-q', '-F', looppart])
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mountpoint = tempfile.mkdtemp()
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subprocess.check_call(['sudo', 'mount', looppart, mountpoint])
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try:
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subprocess.check_call(['sudo', 'grub2-install',
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'--target', 'i386-pc',
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'--modules', 'part_msdos ext2',
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|
'--boot-directory', mountpoint, loopdev],
|
|
stderr=open(os.devnull, 'w')
|
|
)
|
|
grub_cfg = '{}/grub2/grub.cfg'.format(mountpoint)
|
|
subprocess.check_call(
|
|
['sudo', 'chown', '-R', os.getlogin(), mountpoint])
|
|
with open(grub_cfg, 'w') as f:
|
|
f.write(
|
|
"set timeout=1\n"
|
|
"menuentry 'Default' {\n"
|
|
" linux /vmlinuz root=/dev/xvda1 "
|
|
"rd.driver.blacklist=bochs_drm "
|
|
"rd.driver.blacklist=uhci_hcd\n"
|
|
" initrd /initrd\n"
|
|
"}"
|
|
)
|
|
p = subprocess.Popen(['uname', '-r'], stdout=subprocess.PIPE)
|
|
(kernel_version, _) = p.communicate()
|
|
kernel_version = kernel_version.strip()
|
|
kernel = '/boot/vmlinuz-{}'.format(kernel_version)
|
|
shutil.copy(kernel, os.path.join(mountpoint, 'vmlinuz'))
|
|
init_path = os.path.join(mountpoint, 'init')
|
|
with open(init_path, 'w') as f:
|
|
f.write(init_script)
|
|
os.chmod(init_path, 0755)
|
|
dracut_args = [
|
|
'--kver', kernel_version,
|
|
'--include', init_path,
|
|
'/usr/lib/dracut/hooks/pre-pivot/initscript.sh',
|
|
'--no-hostonly', '--nolvmconf', '--nomdadmconf',
|
|
]
|
|
if extra_files:
|
|
dracut_args += ['--install', ' '.join(extra_files)]
|
|
subprocess.check_call(
|
|
['dracut'] + dracut_args + [os.path.join(mountpoint,
|
|
'initrd')],
|
|
stderr=open(os.devnull, 'w')
|
|
)
|
|
finally:
|
|
subprocess.check_call(['sudo', 'umount', mountpoint])
|
|
shutil.rmtree(mountpoint)
|
|
subprocess.check_call(['sudo', 'losetup', '-d', loopdev])
|
|
|
|
class BackupTestsMixin(SystemTestsMixin):
|
|
def setUp(self):
|
|
super(BackupTestsMixin, self).setUp()
|
|
self.error_detected = multiprocessing.Queue()
|
|
self.verbose = False
|
|
|
|
if self.verbose:
|
|
print >>sys.stderr, "-> Creating backupvm"
|
|
|
|
self.backupdir = os.path.join(os.environ["HOME"], "test-backup")
|
|
if os.path.exists(self.backupdir):
|
|
shutil.rmtree(self.backupdir)
|
|
os.mkdir(self.backupdir)
|
|
|
|
def tearDown(self):
|
|
super(BackupTestsMixin, self).tearDown()
|
|
shutil.rmtree(self.backupdir)
|
|
|
|
def print_progress(self, progress):
|
|
if self.verbose:
|
|
print >> sys.stderr, "\r-> Backing up files: {0}%...".format(progress)
|
|
|
|
def error_callback(self, message):
|
|
self.error_detected.put(message)
|
|
if self.verbose:
|
|
print >> sys.stderr, "ERROR: {0}".format(message)
|
|
|
|
def print_callback(self, msg):
|
|
if self.verbose:
|
|
print msg
|
|
|
|
def fill_image(self, path, size=None, sparse=False):
|
|
block_size = 4096
|
|
|
|
if self.verbose:
|
|
print >>sys.stderr, "-> Filling %s" % path
|
|
f = open(path, 'w+')
|
|
if size is None:
|
|
f.seek(0, 2)
|
|
size = f.tell()
|
|
f.seek(0)
|
|
|
|
for block_num in xrange(size/block_size):
|
|
f.write('a' * block_size)
|
|
if sparse:
|
|
f.seek(block_size, 1)
|
|
|
|
f.close()
|
|
|
|
# NOTE: this was create_basic_vms
|
|
def create_backup_vms(self):
|
|
template=self.qc.get_default_template()
|
|
|
|
vms = []
|
|
vmname = self.make_vm_name('test-net')
|
|
if self.verbose:
|
|
print >>sys.stderr, "-> Creating %s" % vmname
|
|
testnet = self.qc.add_new_vm('QubesNetVm',
|
|
name=vmname, template=template)
|
|
testnet.create_on_disk(verbose=self.verbose)
|
|
vms.append(testnet)
|
|
self.fill_image(testnet.private_img, 20*1024*1024)
|
|
|
|
vmname = self.make_vm_name('test1')
|
|
if self.verbose:
|
|
print >>sys.stderr, "-> Creating %s" % vmname
|
|
testvm1 = self.qc.add_new_vm('QubesAppVm',
|
|
name=vmname, template=template)
|
|
testvm1.uses_default_netvm = False
|
|
testvm1.netvm = testnet
|
|
testvm1.create_on_disk(verbose=self.verbose)
|
|
vms.append(testvm1)
|
|
self.fill_image(testvm1.private_img, 100*1024*1024)
|
|
|
|
vmname = self.make_vm_name('testhvm1')
|
|
if self.verbose:
|
|
print >>sys.stderr, "-> Creating %s" % vmname
|
|
testvm2 = self.qc.add_new_vm('QubesHVm', name=vmname)
|
|
testvm2.create_on_disk(verbose=self.verbose)
|
|
self.fill_image(testvm2.root_img, 1024*1024*1024, True)
|
|
vms.append(testvm2)
|
|
|
|
self.qc.save()
|
|
|
|
return vms
|
|
|
|
def make_backup(self, vms, prepare_kwargs=dict(), do_kwargs=dict(),
|
|
target=None, expect_failure=False):
|
|
# XXX: bakup_prepare and backup_do don't support host_collection
|
|
self.qc.unlock_db()
|
|
if target is None:
|
|
target = self.backupdir
|
|
try:
|
|
files_to_backup = \
|
|
qubes.backup.backup_prepare(vms,
|
|
print_callback=self.print_callback,
|
|
**prepare_kwargs)
|
|
except qubes.qubes.QubesException as e:
|
|
if not expect_failure:
|
|
self.fail("QubesException during backup_prepare: %s" % str(e))
|
|
else:
|
|
raise
|
|
|
|
try:
|
|
qubes.backup.backup_do(target, files_to_backup, "qubes",
|
|
progress_callback=self.print_progress,
|
|
**do_kwargs)
|
|
except qubes.qubes.QubesException as e:
|
|
if not expect_failure:
|
|
self.fail("QubesException during backup_do: %s" % str(e))
|
|
else:
|
|
raise
|
|
|
|
self.qc.lock_db_for_writing()
|
|
self.qc.load()
|
|
|
|
def restore_backup(self, source=None, appvm=None, options=None,
|
|
expect_errors=None):
|
|
if source is None:
|
|
backupfile = os.path.join(self.backupdir,
|
|
sorted(os.listdir(self.backupdir))[-1])
|
|
else:
|
|
backupfile = source
|
|
|
|
with self.assertNotRaises(qubes.qubes.QubesException):
|
|
backup_info = qubes.backup.backup_restore_prepare(
|
|
backupfile, "qubes",
|
|
host_collection=self.qc,
|
|
print_callback=self.print_callback,
|
|
appvm=appvm,
|
|
options=options or {})
|
|
|
|
if self.verbose:
|
|
qubes.backup.backup_restore_print_summary(backup_info)
|
|
|
|
with self.assertNotRaises(qubes.qubes.QubesException):
|
|
qubes.backup.backup_restore_do(
|
|
backup_info,
|
|
host_collection=self.qc,
|
|
print_callback=self.print_callback if self.verbose else None,
|
|
error_callback=self.error_callback)
|
|
|
|
# maybe someone forgot to call .save()
|
|
self.qc.load()
|
|
|
|
errors = []
|
|
if expect_errors is None:
|
|
expect_errors = []
|
|
while not self.error_detected.empty():
|
|
current_error = self.error_detected.get()
|
|
if any(map(current_error.startswith, expect_errors)):
|
|
continue
|
|
errors.append(current_error)
|
|
self.assertTrue(len(errors) == 0,
|
|
"Error(s) detected during backup_restore_do: %s" %
|
|
'\n'.join(errors))
|
|
if not appvm and not os.path.isdir(backupfile):
|
|
os.unlink(backupfile)
|
|
|
|
def create_sparse(self, path, size):
|
|
f = open(path, "w")
|
|
f.truncate(size)
|
|
f.close()
|
|
|
|
|
|
def load_tests(loader, tests, pattern):
|
|
# discard any tests from this module, because it hosts base classes
|
|
tests = unittest.TestSuite()
|
|
|
|
for modname in (
|
|
'qubes.tests.basic',
|
|
'qubes.tests.dom0_update',
|
|
'qubes.tests.network',
|
|
'qubes.tests.vm_qrexec_gui',
|
|
'qubes.tests.backup',
|
|
'qubes.tests.backupcompatibility',
|
|
'qubes.tests.regressions',
|
|
'qubes.tests.storage',
|
|
'qubes.tests.storage_xen',
|
|
'qubes.tests.block',
|
|
'qubes.tests.hardware',
|
|
'qubes.tests.extra',
|
|
):
|
|
tests.addTests(loader.loadTestsFromName(modname))
|
|
return tests
|
|
|
|
|
|
# vim: ts=4 sw=4 et
|