python-zeroconf/tests/test_dns.py at master · treesadmin/python-zeroconf · GitHub

Repository navigation

History

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

#!/usr/bin/env python

""" Unit tests for zeroconf._dns. """

import logging

import os

import socket

import time

import unittest

import unittest.mock

import zeroconf as r

from zeroconf import const, current_time_millis

from zeroconf._dns import DNSRRSet

from zeroconf import (

DNSHinfo,

DNSText,

ServiceInfo,

)

from . import has_working_ipv6

log = logging.getLogger('zeroconf')

original_logging_level = logging.NOTSET

def setup_module():

global original_logging_level

original_logging_level = log.level

log.setLevel(logging.DEBUG)

def teardown_module():

if original_logging_level != logging.NOTSET:

log.setLevel(original_logging_level)

class TestDunder(unittest.TestCase):

def test_dns_text_repr(self):

# There was an issue on Python 3 that prevented DNSText's repr

# from working when the text was longer than 10 bytes

text = DNSText('irrelevant', 0, 0, 0, b'12345678901')

repr(text)

text = DNSText('irrelevant', 0, 0, 0, b'123')

repr(text)

def test_dns_hinfo_repr_eq(self):

hinfo = DNSHinfo('irrelevant', const._TYPE_HINFO, 0, 0, 'cpu', 'os')

assert hinfo == hinfo

repr(hinfo)

def test_dns_pointer_repr(self):

pointer = r.DNSPointer('irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, '123')

repr(pointer)

@unittest.skipIf(not has_working_ipv6(), 'Requires IPv6')

@unittest.skipIf(os.environ.get('SKIP_IPV6'), 'IPv6 tests disabled')

def test_dns_address_repr(self):

address = r.DNSAddress('irrelevant', const._TYPE_SOA, const._CLASS_IN, 1, b'a')

assert repr(address).endswith("b'a'")

address_ipv4 = r.DNSAddress(

'irrelevant', const._TYPE_SOA, const._CLASS_IN, 1, socket.inet_pton(socket.AF_INET, '127.0.0.1')

)

assert repr(address_ipv4).endswith('127.0.0.1')

address_ipv6 = r.DNSAddress(

'irrelevant', const._TYPE_SOA, const._CLASS_IN, 1, socket.inet_pton(socket.AF_INET6, '::1')

)

assert repr(address_ipv6).endswith('::1')

def test_dns_question_repr(self):

question = r.DNSQuestion('irrelevant', const._TYPE_SRV, const._CLASS_IN | const._CLASS_UNIQUE)

repr(question)

assert not question != question

def test_dns_service_repr(self):

service = r.DNSService(

'irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 80, 'a'

)

repr(service)

def test_dns_record_abc(self):

record = r.DNSRecord('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL)

self.assertRaises(r.AbstractMethodException, record.__eq__, record)

self.assertRaises(r.AbstractMethodException, record.write, None)

def test_dns_record_reset_ttl(self):

record = r.DNSRecord('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL)

time.sleep(1)

record2 = r.DNSRecord('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL)

now = r.current_time_millis()

assert record.created != record2.created

assert record.get_remaining_ttl(now) != record2.get_remaining_ttl(now)

record.reset_ttl(record2)

assert record.ttl == record2.ttl

assert record.created == record2.created

assert record.get_remaining_ttl(now) == record2.get_remaining_ttl(now)

def test_service_info_dunder(self):

type_ = "_test-srvc-type._tcp.local."

name = "xxxyyy"

registration_name = f"{name}.{type_}"

info = ServiceInfo(

type_,

registration_name,

80,

b'',

"ash-2.local.",

addresses=[socket.inet_aton("10.0.1.2")],

)

assert not info != info

repr(info)

def test_service_info_text_properties_not_given(self):

type_ = "_test-srvc-type._tcp.local."

name = "xxxyyy"

registration_name = f"{name}.{type_}"

info = ServiceInfo(

type_=type_,

name=registration_name,

addresses=[socket.inet_aton("10.0.1.2")],

port=80,

server="ash-2.local.",

)

assert isinstance(info.text, bytes)

repr(info)

def test_dns_outgoing_repr(self):

dns_outgoing = r.DNSOutgoing(const._FLAGS_QR_QUERY)

repr(dns_outgoing)

def test_dns_record_is_expired(self):

record = r.DNSRecord('irrelevant', const._TYPE_SRV, const._CLASS_IN, 8)

now = current_time_millis()

assert record.is_expired(now) is False

assert record.is_expired(now + (8 / 2 * 1000)) is False

assert record.is_expired(now + (8 * 1000)) is True

def test_dns_record_is_stale(self):

record = r.DNSRecord('irrelevant', const._TYPE_SRV, const._CLASS_IN, 8)

now = current_time_millis()

assert record.is_stale(now) is False

assert record.is_stale(now + (8 / 4.1 * 1000)) is False

assert record.is_stale(now + (8 / 2 * 1000)) is True

assert record.is_stale(now + (8 * 1000)) is True

def test_dns_record_is_recent(self):

now = current_time_millis()

record = r.DNSRecord('irrelevant', const._TYPE_SRV, const._CLASS_IN, 8)

assert record.is_recent(now + (8 / 4.1 * 1000)) is True

assert record.is_recent(now + (8 / 3 * 1000)) is False

assert record.is_recent(now + (8 / 2 * 1000)) is False

assert record.is_recent(now + (8 * 1000)) is False

def test_dns_question_hashablity():

"""Test DNSQuestions are hashable."""

record1 = r.DNSQuestion('irrelevant', const._TYPE_A, const._CLASS_IN)

record2 = r.DNSQuestion('irrelevant', const._TYPE_A, const._CLASS_IN)

record_set = {record1, record2}

assert len(record_set) == 1

record_set.add(record1)

assert len(record_set) == 1

record3_dupe = r.DNSQuestion('irrelevant', const._TYPE_A, const._CLASS_IN)

assert record2 == record3_dupe

assert record2.__hash__() == record3_dupe.__hash__()

record_set.add(record3_dupe)

assert len(record_set) == 1

record4_dupe = r.DNSQuestion('notsame', const._TYPE_A, const._CLASS_IN)

assert record2 != record4_dupe

assert record2.__hash__() != record4_dupe.__hash__()

record_set.add(record4_dupe)

assert len(record_set) == 2

def test_dns_record_hashablity_does_not_consider_ttl():

"""Test DNSRecord are hashable."""

# Verify the TTL is not considered in the hash

record1 = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, const._DNS_OTHER_TTL, b'same')

record2 = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, const._DNS_HOST_TTL, b'same')

record_set = {record1, record2}

assert len(record_set) == 1

record_set.add(record1)

assert len(record_set) == 1

record3_dupe = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, const._DNS_HOST_TTL, b'same')

assert record2 == record3_dupe

assert record2.__hash__() == record3_dupe.__hash__()

record_set.add(record3_dupe)

assert len(record_set) == 1

def test_dns_record_hashablity_does_not_consider_unique():

"""Test DNSRecord are hashable and unique is ignored."""

# Verify the unique value is not considered in the hash

record1 = r.DNSAddress(

'irrelevant', const._TYPE_A, const._CLASS_IN | const._CLASS_UNIQUE, const._DNS_OTHER_TTL, b'same'

)

record2 = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, const._DNS_OTHER_TTL, b'same')

assert record1.class_ == record2.class_

assert record1.__hash__() == record2.__hash__()

record_set = {record1, record2}

assert len(record_set) == 1

def test_dns_address_record_hashablity():

"""Test DNSAddress are hashable."""

address1 = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 1, b'a')

address2 = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 1, b'b')

address3 = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 1, b'c')

address4 = r.DNSAddress('irrelevant', const._TYPE_AAAA, const._CLASS_IN, 1, b'c')

record_set = {address1, address2, address3, address4}

assert len(record_set) == 4

record_set.add(address1)

assert len(record_set) == 4

address3_dupe = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 1, b'c')

record_set.add(address3_dupe)

assert len(record_set) == 4

# Verify we can remove records

additional_set = {address1, address2}

record_set -= additional_set

assert record_set == {address3, address4}

def test_dns_hinfo_record_hashablity():

"""Test DNSHinfo are hashable."""

hinfo1 = r.DNSHinfo('irrelevant', const._TYPE_HINFO, 0, 0, 'cpu1', 'os')

hinfo2 = r.DNSHinfo('irrelevant', const._TYPE_HINFO, 0, 0, 'cpu2', 'os')

record_set = {hinfo1, hinfo2}

assert len(record_set) == 2

record_set.add(hinfo1)

assert len(record_set) == 2

hinfo2_dupe = r.DNSHinfo('irrelevant', const._TYPE_HINFO, 0, 0, 'cpu2', 'os')

assert hinfo2 == hinfo2_dupe

assert hinfo2.__hash__() == hinfo2_dupe.__hash__()

record_set.add(hinfo2_dupe)

assert len(record_set) == 2

def test_dns_pointer_record_hashablity():

"""Test DNSPointer are hashable."""

ptr1 = r.DNSPointer('irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, '123')

ptr2 = r.DNSPointer('irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, '456')

record_set = {ptr1, ptr2}

assert len(record_set) == 2

record_set.add(ptr1)

assert len(record_set) == 2

ptr2_dupe = r.DNSPointer('irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, '456')

assert ptr2 == ptr2

assert ptr2.__hash__() == ptr2_dupe.__hash__()

record_set.add(ptr2_dupe)

assert len(record_set) == 2

def test_dns_text_record_hashablity():

"""Test DNSText are hashable."""

text1 = r.DNSText('irrelevant', 0, 0, const._DNS_OTHER_TTL, b'12345678901')

text2 = r.DNSText('irrelevant', 1, 0, const._DNS_OTHER_TTL, b'12345678901')

text3 = r.DNSText('irrelevant', 0, 1, const._DNS_OTHER_TTL, b'12345678901')

text4 = r.DNSText('irrelevant', 0, 0, const._DNS_OTHER_TTL, b'ABCDEFGHIJK')

record_set = {text1, text2, text3, text4}

assert len(record_set) == 4

record_set.add(text1)

assert len(record_set) == 4

text1_dupe = r.DNSText('irrelevant', 0, 0, const._DNS_OTHER_TTL, b'12345678901')

assert text1 == text1_dupe

assert text1.__hash__() == text1_dupe.__hash__()

record_set.add(text1_dupe)

assert len(record_set) == 4

def test_dns_service_record_hashablity():

"""Test DNSService are hashable."""

srv1 = r.DNSService('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 80, 'a')

srv2 = r.DNSService('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 1, 80, 'a')

srv3 = r.DNSService('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 81, 'a')

srv4 = r.DNSService('irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 80, 'ab')

record_set = {srv1, srv2, srv3, srv4}

assert len(record_set) == 4

record_set.add(srv1)

assert len(record_set) == 4

srv1_dupe = r.DNSService(

'irrelevant', const._TYPE_SRV, const._CLASS_IN, const._DNS_HOST_TTL, 0, 0, 80, 'a'

)

assert srv1 == srv1_dupe

assert srv1.__hash__() == srv1_dupe.__hash__()

record_set.add(srv1_dupe)

assert len(record_set) == 4

def test_dns_nsec_record_hashablity():

"""Test DNSNsec are hashable."""

nsec1 = r.DNSNsec(

'irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, 'irrelevant', [1, 2, 3]

)

nsec2 = r.DNSNsec(

'irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, 'irrelevant', [1, 2]

)

record_set = {nsec1, nsec2}

assert len(record_set) == 2

record_set.add(nsec1)

assert len(record_set) == 2

nsec2_dupe = r.DNSNsec(

'irrelevant', const._TYPE_PTR, const._CLASS_IN, const._DNS_OTHER_TTL, 'irrelevant', [1, 2]

)

assert nsec2 == nsec2_dupe

assert nsec2.__hash__() == nsec2_dupe.__hash__()

record_set.add(nsec2_dupe)

assert len(record_set) == 2

def test_rrset_does_not_consider_ttl():

"""Test DNSRRSet does not consider the ttl in the hash."""

longarec = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 100, b'same')

shortarec = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 10, b'same')

longaaaarec = r.DNSAddress('irrelevant', const._TYPE_AAAA, const._CLASS_IN, 100, b'same')

shortaaaarec = r.DNSAddress('irrelevant', const._TYPE_AAAA, const._CLASS_IN, 10, b'same')

rrset = DNSRRSet([longarec, shortaaaarec])

assert rrset.suppresses(longarec)

assert rrset.suppresses(shortarec)

assert not rrset.suppresses(longaaaarec)

assert rrset.suppresses(shortaaaarec)

verylongarec = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 1000, b'same')

longarec = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 100, b'same')

mediumarec = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 60, b'same')

shortarec = r.DNSAddress('irrelevant', const._TYPE_A, const._CLASS_IN, 10, b'same')

rrset2 = DNSRRSet([mediumarec])

assert not rrset2.suppresses(verylongarec)

assert rrset2.suppresses(longarec)

assert rrset2.suppresses(mediumarec)

assert rrset2.suppresses(shortarec)

python-zeroconf/tests/test_dns.py at master · treesadmin/python-zeroconf · GitHub

Repository navigation

Expand file tree

Breadcrumbs

test_dns.py

Latest commit

History

Breadcrumbs

test_dns.py

File metadata and controls