Refactor remote command execution in pktgen_dpdk

PktgenDPDKLatency.run will raise a RuntimeError if a remote command
fails. This commit makes it use the already existing exception raising
mechanism in yardstick's ssh client.

JIRA: YARDSTICK-1166

Change-Id: I3a3c7691399044b174f5d040c015c9b907b2fe5d
Signed-off-by: Miikka Koistinen <miikka.koistinen@nokia.com>

2 files changed, 18 insertions, 5 deletions

diff --git a/yardstick/benchmark/scenarios/networking/pktgen_dpdk.py b/yardstick/benchmark/scenarios/networking/pktgen_dpdk.py
index 1b018f52a..efb7d8b5d 100644
--- a/yardstick/benchmark/scenarios/networking/pktgen_dpdk.py
+++ b/yardstick/benchmark/scenarios/networking/pktgen_dpdk.py
@@ -113,10 +113,7 @@ cat ~/result.log -vT \
 {print substr($0,RSTART,RLENGTH)}' \
 |grep -v ^$ |awk '{if ($2 != 0) print $2}'\
 """
-        client_status, client_stdout, client_stderr = self.client.execute(cmd)
-
-        if client_status:
-            raise RuntimeError(client_stderr)
+        _, client_stdout, _ = self.client.execute(cmd, raise_on_error=True)
 
         avg_latency = 0
         if client_stdout:
diff --git a/yardstick/tests/unit/benchmark/scenarios/networking/test_pktgen_dpdk.py b/yardstick/tests/unit/benchmark/scenarios/networking/test_pktgen_dpdk.py
index b141591f7..bcd417830 100644
--- a/yardstick/tests/unit/benchmark/scenarios/networking/test_pktgen_dpdk.py
+++ b/yardstick/tests/unit/benchmark/scenarios/networking/test_pktgen_dpdk.py
@@ -165,7 +165,7 @@ class PktgenDPDKLatencyTestCase(unittest.TestCase):
         self.mock_ssh.SSH.from_node().execute.return_value = (0, sample_output, '')
         self.assertRaises(y_exc.SLAValidationError, p.run, result)
 
-    def test_pktgen_dpdk_unsuccessful_script_error(self):
+    def test_pktgen_dpdk_run_unsuccessful_get_port_mac(self):
 
         args = {
             'options': {'packetsize': 60},
@@ -177,3 +177,19 @@ class PktgenDPDKLatencyTestCase(unittest.TestCase):
 
         self.mock_ssh.SSH.from_node().execute.return_value = (1, '', 'FOOBAR')
         self.assertRaises(RuntimeError, p.run, result)
+
+    def test_pktgen_dpdk_run_unsuccessful_script_error(self):
+        args = {
+            'options': {'packetsize': 60}
+        }
+
+        p = pktgen_dpdk.PktgenDPDKLatency(args, self.ctx)
+
+        self.mock_ssh.SSH.from_node().execute.side_effect = ((0, '', ''),
+                                                             (0, '', ''),
+                                                             (0, '', ''),
+                                                             (0, '', ''),
+                                                             (0, '', ''),
+                                                             y_exc.SSHError)
+        self.assertRaises(y_exc.SSHError, p.run, {})
+        self.assertEqual(self.mock_ssh.SSH.from_node().execute.call_count, 6)