core-admin/qubes/tests/extra.py
Marek Marczykowski-Górecki 1ebbfa8dbc
tests: fix extra tests loader
Fix load error reporting - make sure 'err' variable is transferred into
'runTest' function scope.
Then, relax test loading requirements - use 'resolve' instead of 'load',
to bypass dependencies check (defined in setup.py of the package). The
required dependencies should be handled by RPM already, and in some
cases may not match those in python package. An example is PDF
converter, where dependencies at python level are set for the actual
converter, which is irrelevant for running tests from dom0 (tests will
interact with PDF converter inside a VM).
2020-06-24 01:27:57 +02:00

246 lines
8.8 KiB
Python

#
# The Qubes OS Project, https://www.qubes-os.org/
#
# Copyright (C) 2016
# Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, see <https://www.gnu.org/licenses/>.
#
import asyncio
import os
import subprocess
import sys
import pkg_resources
import qubes.tests
import qubes.vm.appvm
class ProcessWrapper(object):
def __init__(self, proc, loop=None):
self._proc = proc
self._loop = loop or asyncio.get_event_loop()
def __getattr__(self, item):
return getattr(self._proc, item)
def __setattr__(self, key, value):
if key.startswith('_'):
return super(ProcessWrapper, self).__setattr__(key, value)
return setattr(self._proc, key, value)
def communicate(self, input=None):
if self._proc.stdin is not None and input is None:
input = b''
return self._loop.run_until_complete(self._proc.communicate(input))
def wait(self):
return self._loop.run_until_complete(self._proc.wait())
class VMWrapper(object):
'''Wrap VM object to provide stable API for basic operations'''
def __init__(self, vm, loop=None):
self._vm = vm
self._loop = loop or asyncio.get_event_loop()
def __getattr__(self, item):
return getattr(self._vm, item)
def __setattr__(self, key, value):
if key.startswith('_'):
return super(VMWrapper, self).__setattr__(key, value)
return setattr(self._vm, key, value)
def __str__(self):
return str(self._vm)
def __eq__(self, other):
return self._vm == other
def __hash__(self):
return hash(self._vm)
def start(self, start_guid=True):
return self._loop.run_until_complete(
self._vm.start(start_guid=start_guid))
def shutdown(self):
return self._loop.run_until_complete(self._vm.shutdown())
def run(self, command, wait=False, user=None, passio_popen=False,
passio_stderr=False, **kwargs):
if wait:
try:
self._loop.run_until_complete(
self._vm.run_for_stdio(command, user=user))
except subprocess.CalledProcessError as err:
return err.returncode
return 0
elif passio_popen:
p = self._loop.run_until_complete(self._vm.run(command, user=user,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE if passio_stderr else None))
return ProcessWrapper(p, self._loop)
else:
asyncio.ensure_future(self._vm.run_for_stdio(command, user=user),
loop=self._loop)
def run_service(self, service, wait=True, input=None, user=None,
passio_popen=False,
passio_stderr=False, **kwargs):
if wait:
try:
if isinstance(input, str):
input = input.encode()
self._loop.run_until_complete(
self._vm.run_service_for_stdio(service,
input=input, user=user))
except subprocess.CalledProcessError as err:
return err.returncode
return 0
elif passio_popen:
p = self._loop.run_until_complete(self._vm.run_service(service,
user=user,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE if passio_stderr else None))
return ProcessWrapper(p, self._loop)
class ExtraTestCase(qubes.tests.SystemTestCase):
template = None
def setUp(self):
super(ExtraTestCase, self).setUp()
self.init_default_template(self.template)
if self.template is not None:
# also use this template for DispVMs
dispvm_base = self.app.add_new_vm('AppVM',
name=self.make_vm_name('dvm'),
template=self.template, label='red', template_for_dispvms=True)
self.loop.run_until_complete(dispvm_base.create_on_disk())
self.app.default_dispvm = dispvm_base
def tearDown(self):
self.app.default_dispvm = None
super(ExtraTestCase, self).tearDown()
def create_vms(self, names):
"""
Create AppVMs for the duration of the test. Will be automatically
removed after completing the test.
:param names: list of VM names to create (each of them will be
prefixed with some test specific string)
:return: list of created VM objects
"""
if self.template:
template = self.app.domains[self.template]
else:
template = self.app.default_template
for vmname in names:
vm = self.app.add_new_vm(qubes.vm.appvm.AppVM,
name=self.make_vm_name(vmname),
template=template,
label='red')
self.loop.run_until_complete(vm.create_on_disk())
self.app.save()
# get objects after reload
vms = []
for vmname in names:
vms.append(VMWrapper(self.app.domains[self.make_vm_name(vmname)],
loop=self.loop))
return vms
def enable_network(self):
"""
Enable access to the network. Must be called before creating VMs.
"""
self.init_networking()
def qrexec_policy(self, service, source, destination, allow=True):
"""
Allow qrexec calls for duration of the test
:param service: service name
:param source: source VM name
:param destination: destination VM name
:return:
"""
def add_remove_rule(add=True):
with open('/etc/qubes-rpc/policy/{}'.format(service), 'r+') as policy:
policy_rules = policy.readlines()
rule = "{} {} {}\n".format(source, destination,
'allow' if allow else 'deny')
if add:
policy_rules.insert(0, rule)
else:
policy_rules.remove(rule)
policy.truncate(0)
policy.seek(0)
policy.write(''.join(policy_rules))
add_remove_rule(add=True)
self.addCleanup(add_remove_rule, add=False)
def load_tests(loader, tests, pattern):
include_list = None
if 'QUBES_TEST_EXTRA_INCLUDE' in os.environ:
include_list = os.environ['QUBES_TEST_EXTRA_INCLUDE'].split()
exclude_list = []
if 'QUBES_TEST_EXTRA_EXCLUDE' in os.environ:
exclude_list = os.environ['QUBES_TEST_EXTRA_EXCLUDE'].split()
for entry in pkg_resources.iter_entry_points('qubes.tests.extra'):
if include_list is not None and entry.name not in include_list:
continue
if entry.name in exclude_list:
continue
try:
for test_case in entry.resolve()():
tests.addTests(loader.loadTestsFromNames([
'{}.{}'.format(test_case.__module__, test_case.__name__)]))
except Exception as err: # pylint: disable=broad-except
def runTest(self, err=err):
raise err
ExtraLoadFailure = type('ExtraLoadFailure',
(qubes.tests.QubesTestCase,),
{entry.name: runTest})
tests.addTest(ExtraLoadFailure(entry.name))
for entry in pkg_resources.iter_entry_points(
'qubes.tests.extra.for_template'):
if include_list is not None and entry.name not in include_list:
continue
if entry.name in exclude_list:
continue
try:
for test_case in entry.resolve()():
tests.addTests(loader.loadTestsFromNames(
qubes.tests.create_testcases_for_templates(
test_case.__name__, test_case,
module=sys.modules[test_case.__module__])))
except Exception as err: # pylint: disable=broad-except
def runTest(self, err=err):
raise err
ExtraForTemplateLoadFailure = type('ExtraForTemplateLoadFailure',
(qubes.tests.QubesTestCase,),
{entry.name: runTest})
tests.addTest(ExtraForTemplateLoadFailure(entry.name))
return tests