forked from python-zeroconf/python-zeroconf
/
test_zeroconf.py
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/
test_zeroconf.py
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#!/usr/bin/env python
""" Unit tests for zeroconf.py """
import socket
import struct
import unittest
from threading import Event
from mock import Mock
import zeroconf as r
from zeroconf import (
byte_ord,
Listener,
ServiceBrowser,
ServiceInfo,
xrange,
Zeroconf,
)
class PacketGeneration(unittest.TestCase):
def test_parse_own_packet_simple(self):
generated = r.DNSOutgoing(0)
r.DNSIncoming(generated.packet())
def test_parse_own_packet_simple_unicast(self):
generated = r.DNSOutgoing(0, 0)
r.DNSIncoming(generated.packet())
def test_parse_own_packet_flags(self):
generated = r.DNSOutgoing(r._FLAGS_QR_QUERY)
r.DNSIncoming(generated.packet())
def test_parse_own_packet_question(self):
generated = r.DNSOutgoing(r._FLAGS_QR_QUERY)
generated.add_question(r.DNSQuestion("testname.local.", r._TYPE_SRV,
r._CLASS_IN))
r.DNSIncoming(generated.packet())
def test_match_question(self):
generated = r.DNSOutgoing(r._FLAGS_QR_QUERY)
question = r.DNSQuestion("testname.local.", r._TYPE_SRV, r._CLASS_IN)
generated.add_question(question)
parsed = r.DNSIncoming(generated.packet())
self.assertEqual(len(generated.questions), 1)
self.assertEqual(len(generated.questions), len(parsed.questions))
self.assertEqual(question, parsed.questions[0])
class PacketForm(unittest.TestCase):
def test_transaction_id(self):
"""ID must be zero in a DNS-SD packet"""
generated = r.DNSOutgoing(r._FLAGS_QR_QUERY)
bytes = generated.packet()
id = byte_ord(bytes[0]) << 8 | byte_ord(bytes[1])
self.assertEqual(id, 0)
def test_query_header_bits(self):
generated = r.DNSOutgoing(r._FLAGS_QR_QUERY)
bytes = generated.packet()
flags = byte_ord(bytes[2]) << 8 | byte_ord(bytes[3])
self.assertEqual(flags, 0x0)
def test_response_header_bits(self):
generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)
bytes = generated.packet()
flags = byte_ord(bytes[2]) << 8 | byte_ord(bytes[3])
self.assertEqual(flags, 0x8000)
def test_numbers(self):
generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)
bytes = generated.packet()
(numQuestions, numAnswers, numAuthorities,
numAdditionals) = struct.unpack('!4H', bytes[4:12])
self.assertEqual(numQuestions, 0)
self.assertEqual(numAnswers, 0)
self.assertEqual(numAuthorities, 0)
self.assertEqual(numAdditionals, 0)
def test_numbers_questions(self):
generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)
question = r.DNSQuestion("testname.local.", r._TYPE_SRV, r._CLASS_IN)
for i in xrange(10):
generated.add_question(question)
bytes = generated.packet()
(numQuestions, numAnswers, numAuthorities,
numAdditionals) = struct.unpack('!4H', bytes[4:12])
self.assertEqual(numQuestions, 10)
self.assertEqual(numAnswers, 0)
self.assertEqual(numAuthorities, 0)
self.assertEqual(numAdditionals, 0)
class Names(unittest.TestCase):
def test_long_name(self):
generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)
question = r.DNSQuestion("this.is.a.very.long.name.with.lots.of.parts.in.it.local.",
r._TYPE_SRV, r._CLASS_IN)
generated.add_question(question)
r.DNSIncoming(generated.packet())
def test_exceedingly_long_name(self):
generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)
name = "%slocal." % ("part." * 1000)
question = r.DNSQuestion(name, r._TYPE_SRV, r._CLASS_IN)
generated.add_question(question)
r.DNSIncoming(generated.packet())
def test_exceedingly_long_name_part(self):
name = "%s.local." % ("a" * 1000)
generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)
question = r.DNSQuestion(name, r._TYPE_SRV, r._CLASS_IN)
generated.add_question(question)
self.assertRaises(r.NamePartTooLongException, generated.packet)
def test_same_name(self):
name = "paired.local."
generated = r.DNSOutgoing(r._FLAGS_QR_RESPONSE)
question = r.DNSQuestion(name, r._TYPE_SRV, r._CLASS_IN)
generated.add_question(question)
generated.add_question(question)
r.DNSIncoming(generated.packet())
class Framework(unittest.TestCase):
def test_launch_and_close(self):
rv = r.Zeroconf()
rv.close()
def test_integration():
service_added = Event()
service_removed = Event()
type_ = "_http._tcp.local."
registration_name = "xxxyyy.%s" % type_
class MyListener(object):
def remove_service(self, zeroconf, type_, name):
if name == registration_name:
service_removed.set()
def add_service(self, zeroconf, type_, name):
if name == registration_name:
service_added.set()
zeroconf_browser = Zeroconf()
listener = MyListener()
browser = ServiceBrowser(zeroconf_browser, type_, listener)
zeroconf_registrar = Zeroconf()
desc = {'path': '/~paulsm/'}
info = ServiceInfo(
type_, registration_name,
socket.inet_aton("10.0.1.2"), 80, 0, 0,
desc, "ash-2.local.")
zeroconf_registrar.register_service(info)
try:
service_added.wait(1)
assert service_added.is_set()
zeroconf_registrar.unregister_service(info)
service_removed.wait(1)
assert service_removed.is_set()
finally:
zeroconf_registrar.close()
browser.cancel()
zeroconf_browser.close()
def test_listener_handles_closed_socket_situation_gracefully():
error = socket.error(socket.EBADF)
error.errno = socket.EBADF
zeroconf = Mock()
zeroconf.socket.recvfrom.side_effect = error
listener = Listener(zeroconf)
listener.handle_read()