Added full E2E kcrash testing

client/site_tests/logging_UncleanShutdown/logging_UncleanShutdown.py

 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import logging, os, time
 from autotest_lib.client.bin import site_log_reader, site_ui_test, test
 from autotest_lib.client.common_lib import error, utils
 
 _CRASH_PATH = '/sbin/crash_reporter'
 _PENDING_SHUTDOWN_PATH = '/var/lib/crash_reporter/pending_clean_shutdown'
+_UNCLEAN_SHUTDOWN_DETECTED_PATH = '/tmp/unclean-shutdown-detected'
 _UNCLEAN_SHUTDOWN_MESSAGE = 'Last shutdown was not clean'
 
 class logging_UncleanShutdown(site_ui_test.UITest):
     version = 1
     auto_login = False
 
 
     def run_once(self):
         if not os.path.exists(_PENDING_SHUTDOWN_PATH):
             raise error.TestFail('pending shutdown file, %s, not found' %
                                  _PENDING_SHUTDOWN_PATH)
 
         log_reader = site_log_reader.LogReader()
         log_reader.set_start_by_reboot(-1)
 
         if log_reader.can_find(_UNCLEAN_SHUTDOWN_MESSAGE):
             raise error.TestFail(
-                'Unexpectedly detected kernel crash during boot')
+                'Unexpectedly detected unclean shutdown during boot')
+
+        if os.path.exists(_UNCLEAN_SHUTDOWN_DETECTED_PATH):
+            raise error.TestFail('an unclean shutdown file was detected')
 
         # Log in and out twice to make sure that doesn't cause
         # an unclean shutdown message.
         for i in range(2):
             self.login()
             time.sleep(5)
             self.logout()
             time.sleep(5)
 
         if log_reader.can_find(_UNCLEAN_SHUTDOWN_MESSAGE):
             logging.info('Unexpected logs: ', log_reader.get_logs())
             raise error.TestFail(
                 'Unexpectedly detected kernel crash during login/logout')
 
+        if os.path.exists(_UNCLEAN_SHUTDOWN_DETECTED_PATH):
+            raise error.TestFail('an unclean shutdown file was generated')
+
         # Run the shutdown and verify it does not complain of unclean
         # shutdown.
 
         log_reader.set_start_by_current()
         utils.system('%s --clean_shutdown' % _CRASH_PATH)
         utils.system('%s --init' % _CRASH_PATH)
 
-        if log_reader.can_find(_UNCLEAN_SHUTDOWN_MESSAGE):
+        if (log_reader.can_find(_UNCLEAN_SHUTDOWN_MESSAGE) or
+            os.path.exists(_UNCLEAN_SHUTDOWN_DETECTED_PATH)):
             raise error.TestFail('Incorrectly signalled unclean shutdown')
 
         # Now simulate an unclean shutdown and test handling.
 
         log_reader.set_start_by_current()
         utils.system('%s --init' % _CRASH_PATH)
 
         if not log_reader.can_find(_UNCLEAN_SHUTDOWN_MESSAGE):
             raise error.TestFail('Did not signal unclean shutdown when should')
+
+        if not os.path.exists(_UNCLEAN_SHUTDOWN_DETECTED_PATH):
+            raise error.TestFail('Did not touch unclean shutdown file')
+
+        os.remove(_UNCLEAN_SHUTDOWN_DETECTED_PATH)