d9b0c6fbf7
Drop pycodestyle for code style checking in favor of black. Black is much faster, stable PEP8 compliant code style checker offering also automatic formatting. It aims to be very stable and produce smallest diffs. It's used by many small and big projects. Running checkstyle with black takes a few seconds with a terse output. Thus, test-checkstyle-diff is no longer necessary. Expand scope of checkstyle to all python files in the repo, replacing test-checkstyle with checkstyle-python. Also, fixstyle-python is now available for automatic style formatting. Note: python virtualenv has been consolidated in test/Makefile, test/requirements*.txt which will eventually be moved to a central location. This is required to simply the automated generation of docker executor images in the CI. Type: improvement Change-Id: I022a326603485f58585e879ac0f697fceefbc9c8 Signed-off-by: Klement Sekera <klement.sekera@gmail.com> Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
116 lines
3.5 KiB
Python
116 lines
3.5 KiB
Python
#!/usr/bin/env python3
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import unittest
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from framework import VppTestCase, VppTestRunner
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from vpp_ip_route import VppIpTable, VppIpRoute, VppRoutePath
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from ipaddress import *
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import scapy.compat
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from scapy.contrib.mpls import MPLS
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from scapy.layers.inet import IP, UDP, TCP, ICMP, icmptypes, icmpcodes
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from scapy.layers.l2 import Ether
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from scapy.packet import Raw
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from scapy.layers.dns import DNSRR, DNS, DNSQR
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class TestDns(VppTestCase):
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"""Dns Test Cases"""
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@classmethod
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def setUpClass(cls):
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super(TestDns, cls).setUpClass()
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@classmethod
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def tearDownClass(cls):
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super(TestDns, cls).tearDownClass()
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def setUp(self):
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super(TestDns, self).setUp()
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self.create_pg_interfaces(range(1))
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for i in self.pg_interfaces:
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i.admin_up()
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i.config_ip4()
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i.resolve_arp()
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def tearDown(self):
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super(TestDns, self).tearDown()
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def create_stream(self, src_if):
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"""Create input packet stream for defined interface.
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:param VppInterface src_if: Interface to create packet stream for.
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"""
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good_request = (
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Ether(dst=src_if.local_mac, src=src_if.remote_mac)
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/ IP(src=src_if.remote_ip4)
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/ UDP(sport=1234, dport=53)
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/ DNS(rd=1, qd=DNSQR(qname="bozo.clown.org"))
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)
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bad_request = (
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Ether(dst=src_if.local_mac, src=src_if.remote_mac)
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/ IP(src=src_if.remote_ip4)
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/ UDP(sport=1234, dport=53)
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/ DNS(rd=1, qd=DNSQR(qname="no.clown.org"))
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)
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pkts = [good_request, bad_request]
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return pkts
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def verify_capture(self, dst_if, capture):
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"""Verify captured input packet stream for defined interface.
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:param VppInterface dst_if: Interface to verify captured packet stream
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for.
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:param list capture: Captured packet stream.
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"""
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self.logger.info("Verifying capture on interface %s" % dst_if.name)
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for packet in capture:
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dns = packet[DNS]
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self.assertEqual(dns.an[0].rdata, "1.2.3.4")
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def test_dns_unittest(self):
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"""DNS Name Resolver Basic Functional Test"""
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# Set up an upstream name resolver. We won't actually go there
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self.vapi.dns_name_server_add_del(
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is_ip6=0, is_add=1, server_address=IPv4Address("8.8.8.8").packed
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)
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# Enable name resolution
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self.vapi.dns_enable_disable(enable=1)
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# Manually add a static dns cache entry
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self.logger.info(self.vapi.cli("dns cache add bozo.clown.org 1.2.3.4"))
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# Test the binary API
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rv = self.vapi.dns_resolve_name(name=b"bozo.clown.org")
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self.assertEqual(rv.ip4_address, IPv4Address("1.2.3.4").packed)
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# Configure 127.0.0.1/8 on the pg interface
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self.vapi.sw_interface_add_del_address(
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sw_if_index=self.pg0.sw_if_index, prefix="127.0.0.1/8"
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)
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# Send a couple of DNS request packets, one for bozo.clown.org
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# and one for no.clown.org which won't resolve
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pkts = self.create_stream(self.pg0)
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self.pg0.add_stream(pkts)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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pkts = self.pg0.get_capture(1)
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self.verify_capture(self.pg0, pkts)
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# Make sure that the cache contents are correct
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str = self.vapi.cli("show dns cache verbose")
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self.assertIn("1.2.3.4", str)
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self.assertIn("[P] no.clown.org:", str)
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if __name__ == "__main__":
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unittest.main(testRunner=VppTestRunner)
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