[spp] [PATCH 2/3] test: add spp_nfv test for forwarding

[yasufum.o@gmail.com]

From: Yasufumi Ogawa <yasufum.o@gmail.com>

This update is to add a test for checking if packet is forwarded between
ports. In this test, it sends packets from src nullpmd to dst nullpmd
via ring, and number of forwarded packets is checked by referring status
of spp_primary.

Signed-off-by: Yasufumi Ogawa <yasufum.o@gmail.com>
---
 test/test_spp_nfv.py | 47 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/test/test_spp_nfv.py b/test/test_spp_nfv.py
index 1ebb3d3..1376df7 100644
--- a/test/test_spp_nfv.py
+++ b/test/test_spp_nfv.py
@@ -126,6 +126,14 @@ class TestSppNfv(unittest.TestCase):
                 sec_id=self.default_sec_id)
         requests.delete(url)
 
+    def _get_pri_status(self):
+        """Get status of spp_primary"""
+
+        url = "{baseurl}/primary/status".format(
+                baseurl=self.base_url)
+        response = requests.get(url)
+        return response.json()
+
     # Test methods for testing spp_nfv from here.
     def test_sec_id(self):
         """Confirm sec ID is expected value."""
@@ -177,3 +185,42 @@ class TestSppNfv(unittest.TestCase):
         self._reset_patches()
         nfv = self._get_status()
         self.assertEqual(nfv['patches'], [])
+
+        for port in ports:
+            self._del_port(port)
+
+    def test_forwarding(self):
+        """Check if forwarding packet is counted up.
+
+        This test confirm that packet counter on ring PMD is counted up
+        after forwarding is started. It waits about 1sec so that
+        certain amount of packets are forwarded.
+        """
+
+        wait_time = 1  # sec, wait for forwarding
+        ring_idx = 1
+        ports = {
+                'src': 'nullpmd:1',
+                'dst': 'nullpmd:2',
+                'ring': 'ring:{}'.format(ring_idx)
+                }
+
+        for port in ports.values():
+            self._add_port(port)
+
+        self._patch(ports['src'], ports['ring'])
+        self._patch(ports['ring'], ports['dst'])
+        self._set_forwarding_status('start')
+
+        # NOTE: this test is failed if sleep time is too small.
+        time.sleep(wait_time)  # wait to start forwarding
+
+        self._set_forwarding_status('stop')
+        self._reset_patches()
+        for port in ports.values():
+            self._del_port(port)
+
+        pri = self._get_pri_status()
+
+        self.assertTrue(pri['ring_ports'][ring_idx]['rx'] > 0)
+        self.assertTrue(pri['ring_ports'][ring_idx]['tx'] > 0)
-- 
2.17.1