Add unit test for pktgen

Sample output from pktgen_benchmark.bash is read from a string.
Running of unittest from run_test.sh is NOT enabled.

JIRA:-

Change-Id: I51391df0726ed9e7486775d2cdd5583b305ea8e0
Signed-off-by: Kristian Hunt <kristian.hunt@gmail.com>

diff --git a/tests/unit/benchmark/scenarios/networking/test_pktgen.py b/tests/unit/benchmark/scenarios/networking/test_pktgen.py
new file mode 100644 (file)
index 0000000..a20382c
--- /dev/null
+++ b/tests/unit/benchmark/scenarios/networking/test_pktgen.py
@@ -0,0 +1,195 @@
+#!/usr/bin/env python
+
+##############################################################################
+# Copyright (c) 2015 Ericsson AB and others.
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+##############################################################################
+
+# Unittest for yardstick.benchmark.scenarios.networking.pktgen.Pktgen
+
+import mock
+import unittest
+import json
+
+from yardstick.benchmark.scenarios.networking import pktgen
+
+
+@mock.patch('yardstick.benchmark.scenarios.networking.pktgen.ssh')
+class PktgenTestCase(unittest.TestCase):
+
+    def setUp(self):
+        self.ctx = {
+            'host': '172.16.0.137',
+            'target': '172.16.0.138',
+            'user': 'cirros',
+            'key_filename': "mykey.key"
+        }
+
+    def test_pktgen_successful_setup(self, mock_ssh):
+
+        p = pktgen.Pktgen(self.ctx)
+        args = {
+            'options': {'packetsize': 60},
+            'ipaddr': '172.16.0.139'
+        }
+        p.setup()
+
+        mock_ssh.SSH().execute.return_value = (0, '', '')
+        self.assertIsNotNone(p.server)
+        self.assertIsNotNone(p.client)
+        self.assertEqual(p.setup_done, True)
+
+    def test_pktgen_successful_iptables_setup(self, mock_ssh):
+
+        p = pktgen.Pktgen(self.ctx)
+        args = {
+            'options': {'packetsize': 60, 'number_of_ports': 10},
+            'ipaddr': '172.16.0.139'
+        }
+        p.server = mock_ssh.SSH()
+        p.number_of_ports = args['options']['number_of_ports']
+
+        mock_ssh.SSH().execute.return_value = (0, '', '')
+
+        p._iptables_setup()
+
+        mock_ssh.SSH().execute.assert_called_with(
+            "sudo iptables -F; "
+            "sudo iptables -A INPUT -p udp --dport 1000:%s -j DROP"
+            % 1010)
+
+    def test_pktgen_unsuccessful_iptables_setup(self, mock_ssh):
+
+        p = pktgen.Pktgen(self.ctx)
+        args = {
+            'options': {'packetsize': 60, 'number_of_ports': 10},
+            'ipaddr': '172.16.0.139'
+        }
+        p.server = mock_ssh.SSH()
+        p.number_of_ports = args['options']['number_of_ports']
+
+        mock_ssh.SSH().execute.return_value = (1, '', 'FOOBAR')
+        self.assertRaises(RuntimeError, p._iptables_setup)
+
+    def test_pktgen_successful_iptables_get_result(self, mock_ssh):
+
+        p = pktgen.Pktgen(self.ctx)
+        args = {
+            'options': {'packetsize': 60, 'number_of_ports': 10},
+            'ipaddr': '172.16.0.139'
+        }
+        p.server = mock_ssh.SSH()
+        p.number_of_ports = args['options']['number_of_ports']
+
+        mock_ssh.SSH().execute.return_value = (0, '150000', '')
+        p._iptables_get_result()
+
+        mock_ssh.SSH().execute.assert_called_with(
+            "sudo iptables -L INPUT -vnx |"
+            "awk '/dpts:1000:%s/ {{printf \"%%s\", $1}}'"
+            % 1010)
+
+    def test_pktgen_unsuccessful_iptables_get_result(self, mock_ssh):
+
+        p = pktgen.Pktgen(self.ctx)
+        args = {
+            'options': {'packetsize': 60, 'number_of_ports': 10},
+            'ipaddr': '172.16.0.139'
+        }
+        p.server = mock_ssh.SSH()
+        p.number_of_ports = args['options']['number_of_ports']
+
+        mock_ssh.SSH().execute.return_value = (1, '', 'FOOBAR')
+        self.assertRaises(RuntimeError, p._iptables_get_result)
+
+    def test_pktgen_successful_no_sla(self, mock_ssh):
+
+        p = pktgen.Pktgen(self.ctx)
+        args = {
+            'options': {'packetsize': 60, 'number_of_ports': 10},
+            'ipaddr': '172.16.0.139'
+        }
+        p.server = mock_ssh.SSH()
+        p.client = mock_ssh.SSH()
+
+        mock_iptables_result = mock.Mock()
+        mock_iptables_result.return_value = 149300
+        p._iptables_get_result = mock_iptables_result
+
+        sample_output = '{"packets_per_second": 9753, "errors": 0, \
+            "packets_sent": 149776, "flows": 110}'
+        mock_ssh.SSH().execute.return_value = (0, sample_output, '')
+
+        result = p.run(args)
+        expected_result = json.loads(sample_output)
+        expected_result["packets_received"] = 149300
+        self.assertEqual(result, expected_result)
+
+    def test_pktgen_successful_sla(self, mock_ssh):
+
+        p = pktgen.Pktgen(self.ctx)
+        args = {
+            'options': {'packetsize': 60, 'number_of_ports': 10},
+            'ipaddr': '172.16.0.139',
+            'sla': {'max_ppm': 10000}
+        }
+        p.server = mock_ssh.SSH()
+        p.client = mock_ssh.SSH()
+
+        mock_iptables_result = mock.Mock()
+        mock_iptables_result.return_value = 149300
+        p._iptables_get_result = mock_iptables_result
+
+        sample_output = '{"packets_per_second": 9753, "errors": 0, \
+            "packets_sent": 149776, "flows": 110}'
+        mock_ssh.SSH().execute.return_value = (0, sample_output, '')
+
+        result = p.run(args)
+        expected_result = json.loads(sample_output)
+        expected_result["packets_received"] = 149300
+        self.assertEqual(result, expected_result)
+
+    def test_pktgen_unsuccessful_sla(self, mock_ssh):
+
+        p = pktgen.Pktgen(self.ctx)
+        args = {
+            'options': {'packetsize': 60, 'number_of_ports': 10},
+            'ipaddr': '172.16.0.139',
+            'sla': {'max_ppm': 1000}
+        }
+        p.server = mock_ssh.SSH()
+        p.client = mock_ssh.SSH()
+
+        mock_iptables_result = mock.Mock()
+        mock_iptables_result.return_value = 149300
+        p._iptables_get_result = mock_iptables_result
+
+        sample_output = '{"packets_per_second": 9753, "errors": 0, \
+            "packets_sent": 149776, "flows": 110}'
+        mock_ssh.SSH().execute.return_value = (0, sample_output, '')
+        self.assertRaises(AssertionError, p.run, args)
+
+    def test_pktgen_unsuccessful_script_error(self, mock_ssh):
+
+        p = pktgen.Pktgen(self.ctx)
+        args = {
+            'options': {'packetsize': 60, 'number_of_ports': 10},
+            'ipaddr': '172.16.0.139',
+            'sla': {'max_ppm': 1000}
+        }
+        p.server = mock_ssh.SSH()
+        p.client = mock_ssh.SSH()
+
+        mock_ssh.SSH().execute.return_value = (1, '', 'FOOBAR')
+        self.assertRaises(RuntimeError, p.run, args)
+
+
+def main():
+    unittest.main()
+
+if __name__ == '__main__':
+    main()