[Test]: Add tc for default ping-timeout and epoll thread count

Test Steps:
1. Start glusterd
2. Check ping timeout value in glusterd.vol should be 0
3. Create a test script for epoll thread count
4. Source the test script
5. Fetch the pid of glusterd
6. Check epoll thread count of glusterd should be 1

Change-Id: Ie3bbcb799eb1776004c3db4922d7ee5f5993b100
Signed-off-by: nik-redhat <nladha@redhat.com>

1 files changed, 87 insertions, 0 deletions

diff --git a/tests/functional/glusterd/test_default_ping_timer_and_epoll_thread_count.py b/tests/functional/glusterd/test_default_ping_timer_and_epoll_thread_count.py
new file mode 100644
index 000000000..4127213b0
--- /dev/null
+++ b/tests/functional/glusterd/test_default_ping_timer_and_epoll_thread_count.py
@@ -0,0 +1,87 @@
+#  Copyright (C) 2020 Red Hat, Inc. <http://www.redhat.com>
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License along
+#  with this program; if not, write to the Free Software Foundation, Inc.,
+#  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+""" Description:
+    Tests to check by default ping timer is disabled and epoll
+    thread count is 1
+"""
+
+from glusto.core import Glusto as g
+from glustolibs.gluster.gluster_base_class import GlusterBaseClass
+
+
+class TestPingTimerAndEpollThreadCountDefaultValue(GlusterBaseClass):
+    def tearDown(self):
+        # Remvoing the test script created during the test
+        cmd = "rm -f test.sh;"
+        ret, _, _ = g.run(self.mnode, cmd)
+        self.assertEqual(ret, 0, "Failed to remove the test script")
+
+        # Calling GlusterBaseClass tearDown
+        self.get_super_method(self, 'tearDown')()
+
+    def test_ping_timer_disbaled_and_epoll_thread_count_default_value(self):
+        """
+        Test Steps:
+        1. Start glusterd
+        2. Check ping timeout value in glusterd.vol should be 0
+        3. Create a test script for epoll thread count
+        4. Source the test script
+        5. Fetch the pid of glusterd
+        6. Check epoll thread count of glusterd should be 1
+        """
+        # Fetch the ping timeout value from glusterd.vol file
+        cmd = "cat /etc/glusterfs/glusterd.vol | grep -i ping-timeout"
+        ret, out, _ = g.run(self.mnode, cmd)
+        self.assertEqual(ret, 0, "Failed to get ping-timeout value from"
+                         " glusterd.vol file")
+
+        # Check if the default value is 0
+        self.ping_value = out.split("ping-timeout")
+        self.ping_value[1] = (self.ping_value[1]).strip()
+        self.assertEqual(int(self.ping_value[1]), 0, "Unexpected: Default"
+                         " value of ping-timeout is not 0")
+
+        # Shell Script to be run for epoll thread count
+        script = """
+                #!/bin/bash
+                function nepoll ()
+                {
+                    local pid=$1;
+                    for i in $(ls /proc/$pid/task);
+                    do
+                        cat /proc/$pid/task/$i/stack | grep epoll_wait;
+                    done
+                }
+                """
+
+        # Execute the shell script
+        cmd = "echo '{}' > test.sh;".format(script)
+        ret, _, _ = g.run(self.mnode, cmd)
+        self.assertEqual(ret, 0, "Failed to create the file with the script")
+
+        # Fetch the pid of glusterd
+        cmd = "pidof glusterd"
+        ret, pidof_glusterd, _ = g.run(self.mnode, cmd)
+        self.assertEqual(ret, 0, "Failed to get the pid of glusterd")
+        pidof_glusterd = int(pidof_glusterd)
+
+        # Check the epoll thread count of glusterd
+        cmd = "source test.sh; nepoll %d | wc -l" % pidof_glusterd
+        ret, count, _ = g.run(self.mnode, cmd)
+        self.assertEqual(ret, 0, "Failed to get the epoll thread count")
+        self.assertEqual(int(count), 1, "Unexpected: Default epoll thread"
+                         "count is not 1")