Testcase for getting Kernel Log errors/warnings.

We have testcase for retrieving errors in OPAL log.
This patch will get the critical/error/warning messages
from kerenl log.

Now we can use this test in all other tests wherever it
requires to monitor the kernel errors.

Signed-off-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com>

Author: pridhiviraj

op-test

@@ -60,6 +60,7 @@ from testcases import OpTestMCColdResetEffects
 from testcases import OpTestDumps
 from testcases import HostLogin
 from testcases import OpalMsglog
+from testcases import KernelLog
 from testcases import OpTestFlash
 from testcases import OpalErrorLog
 from testcases import LightPathDiagnostics
@@ -101,6 +102,7 @@ class SkirootSuite():
         self.s.addTest(OpTestHeartbeat.HeartbeatSkiroot())
         self.s.addTest(OpTestNVRAM.SkirootNVRAM())
         self.s.addTest(OpalMsglog.Skiroot())
+        self.s.addTest(KernelLog.Skiroot())
         self.s.addTest(DPO.DPOSkiroot())
 #        self.s.addTest(OpTestEnergyScale.runtime_suite())
     def suite(self):
@@ -126,6 +128,7 @@ class HostSuite():
         self.s.addTest(OpTestSensors.OpTestSensors())
         self.s.addTest(OpalErrorLog.BasicTest())
         self.s.addTest(OpalMsglog.Host())
+        self.s.addTest(KernelLog.Host())
         self.s.addTest(OpTestPrdDaemon.OpTestPrdDaemon())
     def suite(self):
         return self.s

testcases/KernelLog.py

@@ -0,0 +1,58 @@
+#!/usr/bin/python
+# OpenPOWER Automated Test Project
+#
+# Contributors Listed Below - COPYRIGHT 2017
+# [+] International Business Machines Corp.
+#
+#
+# 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 unittest
+
+import OpTestConfiguration
+from common.OpTestSystem import OpSystemState
+from common.OpTestConstants import OpTestConstants as BMC_CONST
+
+class KernelLog():
+    def setUp(self):
+        conf = OpTestConfiguration.conf
+        self.cv_HOST = conf.host()
+        self.cv_IPMI = conf.ipmi()
+        self.cv_SYSTEM = conf.system()
+
+    def runTest(self):
+        self.setup_test()
+        if "skiroot" in self.test:
+            cmd = "dmesg -r|grep '<[4321]>'"
+        elif "host" in self.test:
+            cmd = "dmesg -T --level=alert,crit,err,warn"
+        else:
+            raise Exception("Unknow test type")
+
+        log_entries = self.c.run_command(cmd)
+        msg = '\n'.join(filter(None, log_entries))
+        self.assertTrue( len(log_entries) == 0, "Warnings/Errors in Kernel log:\n%s" % msg)
+
+class Skiroot(KernelLog, unittest.TestCase):
+    def setup_test(self):
+        self.test = "skiroot"
+        self.cv_SYSTEM.goto_state(OpSystemState.PETITBOOT_SHELL)
+        self.c = self.cv_SYSTEM.sys_get_ipmi_console()
+        self.cv_SYSTEM.host_console_unique_prompt()
+
+class Host(KernelLog, unittest.TestCase):
+    def setup_test(self):
+        self.test = "host"
+        self.cv_SYSTEM.goto_state(OpSystemState.OS)
+        self.c = self.cv_SYSTEM.host().get_ssh_connection()