NAT: test cleanup (VPP-1252)

"assertEqual(len(capture), <expected packet count>)" no more needed since it is done by get_capture

Change-Id: I1cbe223cf55198cec946b8ea0883f2a4fa632005
Signed-off-by: Matus Fabian <matfabia@cisco.com>

1 files changed, 11 insertions, 30 deletions

diff --git a/test/test_nat.py b/test/test_nat.py
index 6152a7eadf4..47e779b9026 100644
--- a/test/test_nat.py
+++ b/test/test_nat.py
@@ -422,14 +422,13 @@ class MethodHolder(VppTestCase):
         return pkts
 
     def verify_capture_out(self, capture, nat_ip=None, same_port=False,
-                           packet_num=3, dst_ip=None, is_ip6=False):
+                           dst_ip=None, is_ip6=False):
         """
         Verify captured packets on outside network
 
         :param capture: Captured packets
         :param nat_ip: Translated IP address (Default use global NAT address)
         :param same_port: Sorce port number is not translated (Default False)
-        :param packet_num: Expected number of packets (Default 3)
         :param dst_ip: Destination IP address (Default do not verify)
         :param is_ip6: If L3 protocol is IPv6 (Default False)
         """
@@ -441,7 +440,6 @@ class MethodHolder(VppTestCase):
             ICMP46 = ICMP
         if nat_ip is None:
             nat_ip = self.nat_addr
-        self.assertEqual(packet_num, len(capture))
         for packet in capture:
             try:
                 if not is_ip6:
@@ -477,28 +475,25 @@ class MethodHolder(VppTestCase):
                 raise
 
     def verify_capture_out_ip6(self, capture, nat_ip, same_port=False,
-                               packet_num=3, dst_ip=None):
+                               dst_ip=None):
         """
         Verify captured packets on outside network
 
         :param capture: Captured packets
         :param nat_ip: Translated IP address
         :param same_port: Sorce port number is not translated (Default False)
-        :param packet_num: Expected number of packets (Default 3)
         :param dst_ip: Destination IP address (Default do not verify)
         """
-        return self.verify_capture_out(capture, nat_ip, same_port, packet_num,
-                                       dst_ip, True)
+        return self.verify_capture_out(capture, nat_ip, same_port, dst_ip,
+                                       True)
 
-    def verify_capture_in(self, capture, in_if, packet_num=3):
+    def verify_capture_in(self, capture, in_if):
         """
         Verify captured packets on inside network
 
         :param capture: Captured packets
         :param in_if: Inside interface
-        :param packet_num: Expected number of packets (Default 3)
         """
-        self.assertEqual(packet_num, len(capture))
         for packet in capture:
             try:
                 self.assert_packet_checksums_valid(packet)
@@ -514,16 +509,14 @@ class MethodHolder(VppTestCase):
                                       "(inside network):", packet))
                 raise
 
-    def verify_capture_in_ip6(self, capture, src_ip, dst_ip, packet_num=3):
+    def verify_capture_in_ip6(self, capture, src_ip, dst_ip):
         """
         Verify captured IPv6 packets on inside network
 
         :param capture: Captured packets
         :param src_ip: Source IP
         :param dst_ip: Destination IP address
-        :param packet_num: Expected number of packets (Default 3)
         """
-        self.assertEqual(packet_num, len(capture))
         for packet in capture:
             try:
                 self.assertEqual(packet[IPv6].src, src_ip)
@@ -565,20 +558,18 @@ class MethodHolder(VppTestCase):
                 raise
 
     def verify_capture_out_with_icmp_errors(self, capture, src_ip=None,
-                                            packet_num=3, icmp_type=11):
+                                            icmp_type=11):
         """
         Verify captured packets with ICMP errors on outside network
 
         :param capture: Captured packets
         :param src_ip: Translated IP address or IP address of VPP
                        (Default use global NAT address)
-        :param packet_num: Expected number of packets (Default 3)
         :param icmp_type: Type of error ICMP packet
                           we are expecting (Default 11)
         """
         if src_ip is None:
             src_ip = self.nat_addr
-        self.assertEqual(packet_num, len(capture))
         for packet in capture:
             try:
                 self.assertEqual(packet[IP].src, src_ip)
@@ -600,18 +591,15 @@ class MethodHolder(VppTestCase):
                                       "(outside network):", packet))
                 raise
 
-    def verify_capture_in_with_icmp_errors(self, capture, in_if, packet_num=3,
-                                           icmp_type=11):
+    def verify_capture_in_with_icmp_errors(self, capture, in_if, icmp_type=11):
         """
         Verify captured packets with ICMP errors on inside network
 
         :param capture: Captured packets
         :param in_if: Inside interface
-        :param packet_num: Expected number of packets (Default 3)
         :param icmp_type: Type of error ICMP packet
                           we are expecting (Default 11)
         """
-        self.assertEqual(packet_num, len(capture))
         for packet in capture:
             try:
                 self.assertEqual(packet[IP].dst, in_if.remote_ip4)
@@ -1237,7 +1225,6 @@ class TestNAT44(MethodHolder):
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
         capture = self.pg1.get_capture(len(pkts))
-        self.assertEqual(1, len(capture))
         packet = capture[0]
         try:
             self.assertEqual(packet[IP].src, self.pg1.local_ip4)
@@ -1265,7 +1252,7 @@ class TestNAT44(MethodHolder):
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
         capture = self.pg0.get_capture(1)
-        self.verify_capture_in(capture, self.pg0, packet_num=1)
+        self.verify_capture_in(capture, self.pg0)
         self.assert_equal(capture[0][IP].proto, IP_PROTOS.icmp)
 
         # in2out
@@ -1276,7 +1263,7 @@ class TestNAT44(MethodHolder):
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
         capture = self.pg1.get_capture(1)
-        self.verify_capture_out(capture, same_port=True, packet_num=1)
+        self.verify_capture_out(capture, same_port=True)
         self.assert_equal(capture[0][IP].proto, IP_PROTOS.icmp)
 
     def test_forwarding(self):
@@ -5392,18 +5379,16 @@ class TestDeterministicNAT(MethodHolder):
 
         return pkts
 
-    def verify_capture_out(self, capture, nat_ip=None, packet_num=3):
+    def verify_capture_out(self, capture, nat_ip=None):
         """
         Verify captured packets on outside network
 
         :param capture: Captured packets
         :param nat_ip: Translated IP address (Default use global NAT address)
         :param same_port: Sorce port number is not translated (Default False)
-        :param packet_num: Expected number of packets (Default 3)
         """
         if nat_ip is None:
             nat_ip = self.nat_addr
-        self.assertEqual(packet_num, len(capture))
         for packet in capture:
             try:
                 self.assertEqual(packet[IP].src, nat_ip)
@@ -5967,7 +5952,6 @@ class TestNAT64(MethodHolder):
 
         # Wait for Neighbor Solicitation
         capture = self.pg5.get_capture(len(pkts))
-        self.assertEqual(1, len(capture))
         packet = capture[0]
         try:
             self.assertEqual(packet[IPv6].src, self.pg5.local_ip6)
@@ -5995,7 +5979,6 @@ class TestNAT64(MethodHolder):
 
         # Wait for ping reply
         capture = self.pg5.get_capture(len(pkts))
-        self.assertEqual(1, len(capture))
         packet = capture[0]
         try:
             self.assertEqual(packet[IPv6].src, self.pg5.local_ip6)
@@ -7321,7 +7304,6 @@ class TestDSlite(MethodHolder):
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
         capture = self.pg1.get_capture(1)
-        self.assertEqual(1, len(capture))
         capture = capture[0]
         self.assertEqual(capture[IPv6].src, aftr_ip6)
         self.assertEqual(capture[IPv6].dst, self.pg1.remote_hosts[1].ip6)
@@ -7428,7 +7410,6 @@ class TestDSliteCE(MethodHolder):
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
         capture = self.pg1.get_capture(1)
-        self.assertEqual(1, len(capture))
         capture = capture[0]
         self.assertEqual(capture[IPv6].src, b4_ip6)
         self.assertEqual(capture[IPv6].dst, self.pg1.remote_hosts[0].ip6)