34fa0ce8f7
Check and skip VPP_EXCLUDED_PLUGINS tests for most of plugins. Type: improvement Signed-off-by: Dmitry Valter <d-valter@yandex-team.com> Change-Id: I23fd3666729251c639aa8da72a676058e3f5bb4e
115 lines
3.5 KiB
Python
115 lines
3.5 KiB
Python
#!/usr/bin/env python3
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import unittest
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from framework import VppTestCase
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from asfframework import VppTestRunner
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from ipaddress import *
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from config import config
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from scapy.layers.inet import IP, UDP
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from scapy.layers.l2 import Ether
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from scapy.layers.dns import DNS, DNSQR
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@unittest.skipIf("dns" in config.excluded_plugins, "Exclude DNS plugin tests")
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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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