Add daemon test
Add a test of the way that several zuul processes start using
the daemon and pidlockfile modules.
Ideally we would refactor this to use the actual code without
duplication, but recent releases of daemon are causing real problems
so suffer some duplication so that we can at least better evaluate
changes.
Change-Id: Ibaa0f481a52b6177dfffe1a58ebff342873df51b
diff --git a/tests/test_daemon.py b/tests/test_daemon.py
new file mode 100644
index 0000000..689d4f7
--- /dev/null
+++ b/tests/test_daemon.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+
+# Copyright 2014 Hewlett-Packard Development Company, L.P.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import daemon
+import logging
+import os
+import sys
+
+import extras
+import fixtures
+import testtools
+
+from tests.base import iterate_timeout
+
+# as of python-daemon 1.6 it doesn't bundle pidlockfile anymore
+# instead it depends on lockfile-0.9.1 which uses pidfile.
+pid_file_module = extras.try_imports(['daemon.pidlockfile', 'daemon.pidfile'])
+
+
+def daemon_test(pidfile, flagfile):
+ pid = pid_file_module.TimeoutPIDLockFile(pidfile, 10)
+ with daemon.DaemonContext(pidfile=pid):
+ for x in iterate_timeout(30, "flagfile to be removed"):
+ if not os.path.exists(flagfile):
+ break
+ sys.exit(0)
+
+
+class TestDaemon(testtools.TestCase):
+ log = logging.getLogger("zuul.test.daemon")
+
+ def setUp(self):
+ super(TestDaemon, self).setUp()
+ self.test_root = self.useFixture(fixtures.TempDir(
+ rootdir=os.environ.get("ZUUL_TEST_ROOT"))).path
+
+ def test_daemon(self):
+ pidfile = os.path.join(self.test_root, "daemon.pid")
+ flagfile = os.path.join(self.test_root, "daemon.flag")
+ open(flagfile, 'w').close()
+ if not os.fork():
+ self._cleanups = []
+ daemon_test(pidfile, flagfile)
+ for x in iterate_timeout(30, "daemon to start"):
+ if os.path.exists(pidfile):
+ break
+ os.unlink(flagfile)
+ for x in iterate_timeout(30, "daemon to stop"):
+ if not os.path.exists(pidfile):
+ break