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# Copyright 2010 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
"""Test the SIGDUMPMEM signal handler."""
__metaclass__ = type
import os
import time
from lp.services.librarian.interfaces.client import (
DUMP_FILE,
SIGDUMPMEM,
)
from lp.testing import TestCase
from lp.testing.layers import LibrarianLayer
class SIGDUMPMEMTestCase(TestCase):
layer = LibrarianLayer
def test_sigdumpmem(self):
# Remove the dump file, if one exists.
if os.path.exists(DUMP_FILE):
os.unlink(DUMP_FILE)
self.assertFalse(os.path.exists(DUMP_FILE))
# Use the global instance used by the Layer machinery
pid = LibrarianLayer.librarian_fixture.pid
# Send the signal and ensure the dump file is created.
os.kill(pid, SIGDUMPMEM)
timeout = 5
start_time = time.time()
while time.time() < start_time + timeout:
if os.path.exists(DUMP_FILE):
break
self.assertTrue(os.path.exists(DUMP_FILE))
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