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# Copyright 2010-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
import re
import portage
from portage import os
from portage.const import PORTAGE_PYM_PATH
from portage.tests import TestCase
from portage.util._eventloop.global_event_loop import global_event_loop
from _emerge.PipeReader import PipeReader
from _emerge.SpawnProcess import SpawnProcess
class LazyImportPortageBaselineTestCase(TestCase):
_module_re = re.compile(r'^(portage|repoman|_emerge)\.')
_baseline_imports = frozenset([
'portage.const', 'portage.localization',
'portage.proxy', 'portage.proxy.lazyimport',
'portage.proxy.objectproxy',
'portage._selinux',
])
_baseline_import_cmd = [portage._python_interpreter, '-c', '''
import os
import sys
sys.path.insert(0, os.environ["PORTAGE_PYM_PATH"])
import portage
sys.stdout.write(" ".join(k for k in sys.modules
if sys.modules[k] is not None))
''']
def testLazyImportPortageBaseline(self):
"""
Check what modules are imported by a baseline module import.
"""
env = os.environ.copy()
pythonpath = env.get('PYTHONPATH')
if pythonpath is not None and not pythonpath.strip():
pythonpath = None
if pythonpath is None:
pythonpath = ''
else:
pythonpath = ':' + pythonpath
pythonpath = PORTAGE_PYM_PATH + pythonpath
env['PYTHONPATH'] = pythonpath
# If python is patched to insert the path of the
# currently installed portage module into sys.path,
# then the above PYTHONPATH override doesn't help.
env['PORTAGE_PYM_PATH'] = PORTAGE_PYM_PATH
scheduler = global_event_loop()
master_fd, slave_fd = os.pipe()
master_file = os.fdopen(master_fd, 'rb', 0)
slave_file = os.fdopen(slave_fd, 'wb')
producer = SpawnProcess(
args=self._baseline_import_cmd,
env=env, fd_pipes={1:slave_fd},
scheduler=scheduler)
producer.start()
slave_file.close()
consumer = PipeReader(
input_files={"producer" : master_file},
scheduler=scheduler)
consumer.start()
consumer.wait()
self.assertEqual(producer.wait(), os.EX_OK)
self.assertEqual(consumer.wait(), os.EX_OK)
output = consumer.getvalue().decode('ascii', 'replace').split()
unexpected_modules = " ".join(sorted(x for x in output \
if self._module_re.match(x) is not None and \
x not in self._baseline_imports))
self.assertEqual("", unexpected_modules)
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