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# Copyright (C) 2010 Internet Systems Consortium.
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SYSTEMS CONSORTIUM
# DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
# INTERNET SYSTEMS CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
# FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
# WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
# Tests for the rrtype part of the pydnspp module
#
import sys
import unittest
import os
from pydnspp import *
class TestModuleSpec(unittest.TestCase):
def setUp(self):
self.test_name = Name("test.example.com")
self.test_domain = Name("example.com")
self.test_nsname = Name("ns.example.com")
self.rrset_a = RRset(self.test_name, RRClass("IN"), RRType("A"), RRTTL(3600))
self.rrset_a_empty = RRset(self.test_name, RRClass("IN"), RRType("A"), RRTTL(3600))
self.rrset_any_a_empty = RRset(self.test_name, RRClass("ANY"), RRType("A"), RRTTL(3600))
self.rrset_ns = RRset(self.test_domain, RRClass("IN"), RRType("NS"), RRTTL(86400))
self.rrset_ch_txt = RRset(self.test_domain, RRClass("CH"), RRType("TXT"), RRTTL(0))
self.MAX_RDATA_COUNT = 100
self.rrset_a.add_rdata(Rdata(RRType("A"), RRClass("IN"), "192.0.2.1"));
self.rrset_a.add_rdata(Rdata(RRType("A"), RRClass("IN"), "192.0.2.2"));
def test_init(self):
self.assertRaises(TypeError, RRset)
def test_get_rdata_count(self):
for i in range(0, self.MAX_RDATA_COUNT):
self.assertEqual(i, self.rrset_a_empty.get_rdata_count())
self.rrset_a_empty.add_rdata(Rdata(RRType("A"), RRClass("IN"), "192.0.2.1"))
def test_get_length(self):
# Empty RRset should throw
self.assertRaises(EmptyRRset, self.rrset_a_empty.get_length);
# Unless it is type ANY or NONE:
# test.example.com = 1 + 4 + 1 + 7 + 1 + 3 + 1 = 18 octets
# TYPE field = 2 octets
# CLASS field = 2 octets
# TTL field = 4 octets
# RDLENGTH field = 2 octets
# Total = 18 + 2 + 2 + 4 + 2 = 28 octets
self.assertEqual(28, self.rrset_any_a_empty.get_length())
# Single A RR:
# 28 octets (above) + 4 octets (A RDATA) = 32 octets
# With 2 A RRs:
self.assertEqual(32 + 32, self.rrset_a.get_length())
def test_get_name(self):
self.assertEqual(self.test_name, self.rrset_a.get_name())
self.assertEqual(self.test_domain, self.rrset_ns.get_name())
def test_get_class(self):
self.assertEqual(RRClass("IN"), self.rrset_a.get_class());
self.assertEqual(RRClass("CH"), self.rrset_ch_txt.get_class());
def test_get_type(self):
self.assertEqual(RRType("A"), self.rrset_a.get_type());
self.assertEqual(RRType("NS"), self.rrset_ns.get_type());
self.assertEqual(RRType("TXT"), self.rrset_ch_txt.get_type());
def test_get_ttl(self):
self.assertEqual(RRTTL(3600), self.rrset_a.get_ttl());
self.assertEqual(RRTTL(86400), self.rrset_ns.get_ttl());
self.assertEqual(RRTTL(0), self.rrset_ch_txt.get_ttl());
def test_set_ttl(self):
self.rrset_a.set_ttl(RRTTL(86400));
self.assertEqual(RRTTL(86400), self.rrset_a.get_ttl());
self.rrset_a.set_ttl(RRTTL(0));
self.assertEqual(RRTTL(0), self.rrset_a.get_ttl());
self.assertRaises(TypeError, self.rrset_a.set_ttl, 1)
def test_add_rdata(self):
# no iterator to read out yet (TODO: add addition test once implemented)
# This should result in TypeError, but FreeBSD 9.1 cannot correctly
# catch the expected internal C++ exception, resulting in SystemError.
# In general it's not a good practice to weaken the test condition for
# a limited set of buggy environment, but this seems to be the only
# case it could fail this way, so we'd live with it. See #2887.
self.assertRaises((TypeError, SystemError), self.rrset_a.add_rdata,
Rdata(RRType("NS"), RRClass("IN"), "test.name."))
def test_to_text(self):
self.assertEqual("test.example.com. 3600 IN A 192.0.2.1\n"
"test.example.com. 3600 IN A 192.0.2.2\n",
self.rrset_a.to_text());
self.assertEqual("test.example.com. 3600 IN A 192.0.2.1\n"
"test.example.com. 3600 IN A 192.0.2.2\n",
str(self.rrset_a));
self.assertRaises(EmptyRRset, self.rrset_a_empty.to_text)
self.assertEqual("test.example.com. 3600 ANY A\n",
self.rrset_any_a_empty.to_text())
def test_to_wire_buffer(self):
exp_buffer = bytearray(b'\x04test\x07example\x03com\x00\x00\x01\x00\x01\x00\x00\x0e\x10\x00\x04\xc0\x00\x02\x01\x04test\x07example\x03com\x00\x00\x01\x00\x01\x00\x00\x0e\x10\x00\x04\xc0\x00\x02\x02')
buffer = bytearray()
self.rrset_a.to_wire(buffer)
self.assertEqual(exp_buffer, buffer)
self.assertRaises(EmptyRRset, self.rrset_a_empty.to_wire, buffer);
self.assertRaises(TypeError, self.rrset_a.to_wire, 1)
exp_buffer = bytearray(b'\x04test\x07example\x03com\x00\x00\x01\x00\xff\x00\x00\x0e\x10\x00\x00')
buffer = bytearray()
self.rrset_any_a_empty.to_wire(buffer)
self.assertEqual(exp_buffer, buffer)
def test_to_wire_renderer(self):
exp_buffer = bytearray(b'\x04test\x07example\x03com\x00\x00\x01\x00\x01\x00\x00\x0e\x10\x00\x04\xc0\x00\x02\x01\xc0\x00\x00\x01\x00\x01\x00\x00\x0e\x10\x00\x04\xc0\x00\x02\x02')
mr = MessageRenderer()
self.rrset_a.to_wire(mr)
self.assertEqual(exp_buffer, mr.get_data())
def test_get_rdata(self):
rdata = [ Rdata(RRType("A"), RRClass("IN"), "192.0.2.1"),
Rdata(RRType("A"), RRClass("IN"), "192.0.2.2")
]
self.assertEqual(rdata, self.rrset_a.get_rdata())
self.assertEqual([], self.rrset_a_empty.get_rdata())
# We always make a new deep copy in get_rdata(), so the reference
# count of the returned list and its each item should be 1; otherwise
# they would leak.
self.assertEqual(1, sys.getrefcount(self.rrset_a.get_rdata()))
self.assertEqual(1, sys.getrefcount(self.rrset_a.get_rdata()[0]))
if __name__ == '__main__':
unittest.main()
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