cpython/Lib/test/mapping_tests.py at 3.15 · python/cpython · 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

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

# tests common to dict and UserDict

import unittest

import collections

from test import support

class BasicTestImmutableMappingProtocol(unittest.TestCase):

# This base class can be used to check that an object conforms to the

# mapping protocol

# Functions that can be useful to override to adapt to dictionary

# semantics

type2test = None # which class is being tested (overwrite in subclasses)

def _reference(self):

"""Return a dictionary of values which are invariant by storage

in the object under test."""

return {"1": "2", "key1":"value1", "key2":(1,2,3)}

def _empty_mapping(self):

"""Return an empty mapping object"""

return self.type2test()

def _full_mapping(self, data):

"""Return a mapping object with the values contained in data

dictionary"""

return self.type2test(data)

def __init__(self, *args, **kw):

unittest.TestCase.__init__(self, *args, **kw)

self.reference = self._reference().copy()

# A (key, value) pair not in the mapping

key, value = self.reference.popitem()

self.other = {key:value}

# A (key, value) pair in the mapping

key, value = self.reference.popitem()

self.inmapping = {key:value}

self.reference[key] = value

def test_read(self):

# Test for read only operations on mapping

p = self._empty_mapping()

p1 = dict(p) #workaround for singleton objects

d = self._full_mapping(self.reference)

if d is p:

p = p1

#Indexing

for key, value in self.reference.items():

self.assertEqual(d[key], value)

knownkey = list(self.other.keys())[0]

self.assertRaises(KeyError, lambda:d[knownkey])

#len

self.assertEqual(len(p), 0)

self.assertEqual(len(d), len(self.reference))

#__contains__

for k in self.reference:

self.assertIn(k, d)

for k in self.other:

self.assertNotIn(k, d)

#cmp

self.assertEqual(p, p)

self.assertEqual(d, d)

self.assertNotEqual(p, d)

self.assertNotEqual(d, p)

#bool

if p: self.fail("Empty mapping must compare to False")

if not d: self.fail("Full mapping must compare to True")

# keys(), items(), iterkeys() ...

def check_iterandlist(iter, lst, ref):

self.assertHasAttr(iter, '__next__')

self.assertHasAttr(iter, '__iter__')

x = list(iter)

self.assertTrue(set(x)==set(lst)==set(ref))

check_iterandlist(iter(d.keys()), list(d.keys()),

self.reference.keys())

check_iterandlist(iter(d), list(d.keys()), self.reference.keys())

check_iterandlist(iter(d.values()), list(d.values()),

self.reference.values())

check_iterandlist(iter(d.items()), list(d.items()),

self.reference.items())

#get

key, value = next(iter(d.items()))

knownkey, knownvalue = next(iter(self.other.items()))

self.assertEqual(d.get(key, knownvalue), value)

self.assertEqual(d.get(knownkey, knownvalue), knownvalue)

self.assertNotIn(knownkey, d)

def test_constructor(self):

self.assertEqual(self._empty_mapping(), self._empty_mapping())

def test_bool(self):

self.assertTrue(not self._empty_mapping())

self.assertTrue(self.reference)

self.assertFalse(bool(self._empty_mapping()))

self.assertTrue(bool(self.reference))

def test_keys(self):

d = self._empty_mapping()

self.assertEqual(list(d.keys()), [])

d = self.reference

self.assertIn(list(self.inmapping.keys())[0], d.keys())

self.assertNotIn(list(self.other.keys())[0], d.keys())

self.assertRaises(TypeError, d.keys, None)

def test_values(self):

d = self._empty_mapping()

self.assertEqual(list(d.values()), [])

self.assertRaises(TypeError, d.values, None)

def test_items(self):

d = self._empty_mapping()

self.assertEqual(list(d.items()), [])

self.assertRaises(TypeError, d.items, None)

def test_len(self):

d = self._empty_mapping()

self.assertEqual(len(d), 0)

def test_getitem(self):

d = self.reference

self.assertEqual(d[list(self.inmapping.keys())[0]],

list(self.inmapping.values())[0])

self.assertRaises(TypeError, d.__getitem__)

# no test_fromkeys or test_copy as both os.environ and selves don't support it

def test_get(self):

d = self._empty_mapping()

self.assertIsNone(d.get(list(self.other.keys())[0]))

self.assertEqual(d.get(list(self.other.keys())[0], 3), 3)

d = self.reference

self.assertIsNone(d.get(list(self.other.keys())[0]))

self.assertEqual(d.get(list(self.other.keys())[0], 3), 3)

self.assertEqual(d.get(list(self.inmapping.keys())[0]),

list(self.inmapping.values())[0])

self.assertEqual(d.get(list(self.inmapping.keys())[0], 3),

list(self.inmapping.values())[0])

self.assertRaises(TypeError, d.get)

self.assertRaises(TypeError, d.get, None, None, None)

class BasicTestMappingProtocol(BasicTestImmutableMappingProtocol):

def _full_mapping(self, data):

"""Return a mapping object with the values contained in data

dictionary"""

x = self._empty_mapping()

for key, value in data.items():

x[key] = value

return x

def test_write(self):

# Test for write operations on mapping

p = self._empty_mapping()

#Indexing

for key, value in self.reference.items():

p[key] = value

self.assertEqual(p[key], value)

for key in self.reference.keys():

del p[key]

self.assertRaises(KeyError, lambda:p[key])

p = self._empty_mapping()

#update

p.update(self.reference)

self.assertEqual(dict(p), self.reference)

items = list(p.items())

p = self._empty_mapping()

p.update(items)

self.assertEqual(dict(p), self.reference)

d = self._full_mapping(self.reference)

#setdefault

key, value = next(iter(d.items()))

knownkey, knownvalue = next(iter(self.other.items()))

self.assertEqual(d.setdefault(key, knownvalue), value)

self.assertEqual(d[key], value)

self.assertEqual(d.setdefault(knownkey, knownvalue), knownvalue)

self.assertEqual(d[knownkey], knownvalue)

#pop

self.assertEqual(d.pop(knownkey), knownvalue)

self.assertNotIn(knownkey, d)

self.assertRaises(KeyError, d.pop, knownkey)

default = 909

d[knownkey] = knownvalue

self.assertEqual(d.pop(knownkey, default), knownvalue)

self.assertNotIn(knownkey, d)

self.assertEqual(d.pop(knownkey, default), default)

#popitem

key, value = d.popitem()

self.assertNotIn(key, d)

self.assertEqual(value, self.reference[key])

p=self._empty_mapping()

self.assertRaises(KeyError, p.popitem)

def test_update(self):

# mapping argument

d = self._empty_mapping()

d.update(self.other)

self.assertEqual(list(d.items()), list(self.other.items()))

# No argument

d = self._empty_mapping()

d.update()

self.assertEqual(d, self._empty_mapping())

# item sequence

d = self._empty_mapping()

d.update(self.other.items())

self.assertEqual(list(d.items()), list(self.other.items()))

# Iterator

d = self._empty_mapping()

d.update(self.other.items())

self.assertEqual(list(d.items()), list(self.other.items()))

# FIXME: Doesn't work with UserDict

# self.assertRaises((TypeError, AttributeError), d.update, None)

self.assertRaises((TypeError, AttributeError), d.update, 42)

outerself = self

class SimpleUserDict:

def __init__(self):

self.d = outerself.reference

def keys(self):

return self.d.keys()

def __getitem__(self, i):

return self.d[i]

d.clear()

d.update(SimpleUserDict())

i1 = sorted(d.items())

i2 = sorted(self.reference.items())

self.assertEqual(i1, i2)

class Exc(Exception): pass

d = self._empty_mapping()

class FailingUserDict:

def keys(self):

raise Exc

self.assertRaises(Exc, d.update, FailingUserDict())

d.clear()

class FailingUserDict:

def keys(self):

class BogonIter:

def __init__(self):

self.i = 1

def __iter__(self):

return self

def __next__(self):

if self.i:

self.i = 0

return 'a'

raise Exc

return BogonIter()

def __getitem__(self, key):

return key

self.assertRaises(Exc, d.update, FailingUserDict())

class FailingUserDict:

def keys(self):

class BogonIter:

def __init__(self):

self.i = ord('a')

def __iter__(self):

return self

def __next__(self):

if self.i <= ord('z'):

rtn = chr(self.i)

self.i += 1

return rtn

raise StopIteration

return BogonIter()

def __getitem__(self, key):

raise Exc

self.assertRaises(Exc, d.update, FailingUserDict())

d = self._empty_mapping()

class badseq(object):

def __iter__(self):

return self

def __next__(self):

raise Exc()

self.assertRaises(Exc, d.update, badseq())

self.assertRaises(ValueError, d.update, [(1, 2, 3)])

def test_setdefault(self):

d = self._empty_mapping()

self.assertRaises(TypeError, d.setdefault)

def test_popitem(self):

d = self._empty_mapping()

self.assertRaises(KeyError, d.popitem)

self.assertRaises(TypeError, d.popitem, 42)

def test_pop(self):

d = self._empty_mapping()

k, v = list(self.inmapping.items())[0]

d[k] = v

self.assertRaises(KeyError, d.pop, list(self.other.keys())[0])

self.assertEqual(d.pop(k), v)

self.assertEqual(len(d), 0)

self.assertRaises(KeyError, d.pop, k)

class TestMappingProtocol(BasicTestMappingProtocol):

def test_constructor(self):

BasicTestMappingProtocol.test_constructor(self)

self.assertTrue(self._empty_mapping() is not self._empty_mapping())

self.assertEqual(self.type2test(x=1, y=2), {"x": 1, "y": 2})

def test_bool(self):

BasicTestMappingProtocol.test_bool(self)

self.assertTrue(not self._empty_mapping())

self.assertTrue(self._full_mapping({"x": "y"}))

self.assertTrue(bool(self._empty_mapping()) is False)

self.assertTrue(bool(self._full_mapping({"x": "y"})) is True)

def test_keys(self):

BasicTestMappingProtocol.test_keys(self)

d = self._empty_mapping()

self.assertEqual(list(d.keys()), [])

d = self._full_mapping({'a': 1, 'b': 2})

k = d.keys()

self.assertIn('a', k)

self.assertIn('b', k)

self.assertNotIn('c', k)

def test_values(self):

BasicTestMappingProtocol.test_values(self)

d = self._full_mapping({1:2})

self.assertEqual(list(d.values()), [2])

def test_items(self):

BasicTestMappingProtocol.test_items(self)

d = self._full_mapping({1:2})

self.assertEqual(list(d.items()), [(1, 2)])

def test_contains(self):

d = self._empty_mapping()

self.assertNotIn('a', d)

self.assertTrue(not ('a' in d))

self.assertTrue('a' not in d)

d = self._full_mapping({'a': 1, 'b': 2})

self.assertIn('a', d)

self.assertIn('b', d)

self.assertNotIn('c', d)

self.assertRaises(TypeError, d.__contains__)

def test_len(self):

BasicTestMappingProtocol.test_len(self)

d = self._full_mapping({'a': 1, 'b': 2})

self.assertEqual(len(d), 2)

def test_getitem(self):

BasicTestMappingProtocol.test_getitem(self)

d = self._full_mapping({'a': 1, 'b': 2})

self.assertEqual(d['a'], 1)

self.assertEqual(d['b'], 2)

d['c'] = 3

d['a'] = 4

self.assertEqual(d['c'], 3)

self.assertEqual(d['a'], 4)

del d['b']

self.assertEqual(d, {'a': 4, 'c': 3})

self.assertRaises(TypeError, d.__getitem__)

def test_clear(self):

d = self._full_mapping({1:1, 2:2, 3:3})

d.clear()

self.assertEqual(d, {})

self.assertRaises(TypeError, d.clear, None)

def test_update(self):

BasicTestMappingProtocol.test_update(self)

# mapping argument

d = self._empty_mapping()

d.update({1:100})

d.update({2:20})

d.update({1:1, 2:2, 3:3})

self.assertEqual(d, {1:1, 2:2, 3:3})

# no argument

d.update()

self.assertEqual(d, {1:1, 2:2, 3:3})

# keyword arguments

d = self._empty_mapping()

d.update(x=100)

d.update(y=20)

d.update(x=1, y=2, z=3)

self.assertEqual(d, {"x":1, "y":2, "z":3})

# item sequence

d = self._empty_mapping()

d.update([("x", 100), ("y", 20)])

self.assertEqual(d, {"x":100, "y":20})

# Both item sequence and keyword arguments

d = self._empty_mapping()

d.update([("x", 100), ("y", 20)], x=1, y=2)

self.assertEqual(d, {"x":1, "y":2})

# iterator

d = self._full_mapping({1:3, 2:4})

d.update(self._full_mapping({1:2, 3:4, 5:6}).items())

self.assertEqual(d, {1:2, 2:4, 3:4, 5:6})

class SimpleUserDict:

def __init__(self):

self.d = {1:1, 2:2, 3:3}

def keys(self):

return self.d.keys()

def __getitem__(self, i):

return self.d[i]

d.clear()

d.update(SimpleUserDict())

self.assertEqual(d, {1:1, 2:2, 3:3})

def test_fromkeys(self):

self.assertEqual(self.type2test.fromkeys('abc'), {'a':None, 'b':None, 'c':None})

d = self._empty_mapping()

self.assertTrue(not(d.fromkeys('abc') is d))

self.assertEqual(d.fromkeys('abc'), {'a':None, 'b':None, 'c':None})

self.assertEqual(d.fromkeys((4,5),0), {4:0, 5:0})

self.assertEqual(d.fromkeys([]), {})

def g():

yield 1

self.assertEqual(d.fromkeys(g()), {1:None})

self.assertRaises(TypeError, {}.fromkeys, 3)

class dictlike(self.type2test): pass

self.assertEqual(dictlike.fromkeys('a'), {'a':None})

self.assertEqual(dictlike().fromkeys('a'), {'a':None})

self.assertTrue(dictlike.fromkeys('a').__class__ is dictlike)

self.assertTrue(dictlike().fromkeys('a').__class__ is dictlike)

self.assertTrue(type(dictlike.fromkeys('a')) is dictlike)

class mydict(self.type2test):

def __new__(cls):

return collections.UserDict()

ud = mydict.fromkeys('ab')

self.assertEqual(ud, {'a':None, 'b':None})

self.assertIsInstance(ud, collections.UserDict)

self.assertRaises(TypeError, dict.fromkeys)

class Exc(Exception): pass

class baddict1(self.type2test):

def __init__(self, *args, **kwargs):

raise Exc()

self.assertRaises(Exc, baddict1.fromkeys, [1])

class BadSeq(object):

def __iter__(self):

return self

def __next__(self):

raise Exc()

self.assertRaises(Exc, self.type2test.fromkeys, BadSeq())

class baddict2(self.type2test):

def __setitem__(self, key, value):

raise Exc()

self.assertRaises(Exc, baddict2.fromkeys, [1])

def test_copy(self):

d = self._full_mapping({1:1, 2:2, 3:3})

self.assertEqual(d.copy(), {1:1, 2:2, 3:3})

d = self._empty_mapping()

self.assertEqual(d.copy(), d)

self.assertIsInstance(d.copy(), d.__class__)

self.assertRaises(TypeError, d.copy, None)

def test_get(self):

BasicTestMappingProtocol.test_get(self)

d = self._empty_mapping()

self.assertTrue(d.get('c') is None)

self.assertEqual(d.get('c', 3), 3)

d = self._full_mapping({'a' : 1, 'b' : 2})

self.assertTrue(d.get('c') is None)

self.assertEqual(d.get('c', 3), 3)

self.assertEqual(d.get('a'), 1)

self.assertEqual(d.get('a', 3), 1)

def test_setdefault(self):

BasicTestMappingProtocol.test_setdefault(self)

d = self._empty_mapping()

self.assertTrue(d.setdefault('key0') is None)

d.setdefault('key0', [])

self.assertTrue(d.setdefault('key0') is None)

d.setdefault('key', []).append(3)

self.assertEqual(d['key'][0], 3)

d.setdefault('key', []).append(4)

self.assertEqual(len(d['key']), 2)

def test_popitem(self):

BasicTestMappingProtocol.test_popitem(self)

for copymode in -1, +1:

# -1: b has same structure as a

# +1: b is a.copy()

for log2size in range(12):

size = 2**log2size

a = self._empty_mapping()

b = self._empty_mapping()

for i in range(size):

a[repr(i)] = i

if copymode < 0:

b[repr(i)] = i

if copymode > 0:

b = a.copy()

for i in range(size):

ka, va = ta = a.popitem()

self.assertEqual(va, int(ka))

kb, vb = tb = b.popitem()

self.assertEqual(vb, int(kb))

self.assertTrue(not(copymode < 0 and ta != tb))

self.assertTrue(not a)

self.assertTrue(not b)

def test_pop(self):

BasicTestMappingProtocol.test_pop(self)

# Tests for pop with specified key

d = self._empty_mapping()

k, v = 'abc', 'def'

self.assertEqual(d.pop(k, v), v)

d[k] = v

self.assertEqual(d.pop(k, 1), v)

class TestHashMappingProtocol(TestMappingProtocol):

def test_getitem(self):

TestMappingProtocol.test_getitem(self)

class Exc(Exception): pass

class BadEq(object):

def __eq__(self, other):

raise Exc()

def __hash__(self):

return 24

d = self._empty_mapping()

d[BadEq()] = 42

self.assertRaises(KeyError, d.__getitem__, 23)

class BadHash(object):

fail = False

def __hash__(self):

if self.fail:

raise Exc()

else:

return 42

d = self._empty_mapping()

x = BadHash()

d[x] = 42

x.fail = True

self.assertRaises(Exc, d.__getitem__, x)

def test_fromkeys(self):

TestMappingProtocol.test_fromkeys(self)

class mydict(self.type2test):

def __new__(cls):

return collections.UserDict()

ud = mydict.fromkeys('ab')

self.assertEqual(ud, {'a':None, 'b':None})

self.assertIsInstance(ud, collections.UserDict)

def test_pop(self):

TestMappingProtocol.test_pop(self)

class Exc(Exception): pass

class BadHash(object):

fail = False

def __hash__(self):

if self.fail:

raise Exc()

else:

return 42

d = self._empty_mapping()

x = BadHash()

d[x] = 42

x.fail = True

self.assertRaises(Exc, d.pop, x)

def test_mutatingiteration(self):

d = self._empty_mapping()

d[1] = 1

try:

count = 0

for i in d:

d[i+1] = 1

if count >= 1:

self.fail("changing dict size during iteration doesn't raise Error")

count += 1

except RuntimeError:

pass

def test_repr(self):

d = self._empty_mapping()

self.assertEqual(repr(d), '{}')

d[1] = 2

self.assertEqual(repr(d), '{1: 2}')

d = self._empty_mapping()

d[1] = d

self.assertEqual(repr(d), '{1: {...}}')

class Exc(Exception): pass

class BadRepr(object):

def __repr__(self):

raise Exc()

d = self._full_mapping({1: BadRepr()})

self.assertRaises(Exc, repr, d)

@support.run_with_limited_c_stack()

@support.skip_wasi_stack_overflow()

@support.skip_emscripten_stack_overflow()

@support.skip_if_sanitizer("requires deep stack", ub=True)

def test_repr_deep(self):

d = self._empty_mapping()

for i in range(support.exceeds_recursion_limit()):

d0 = d

d = self._empty_mapping()

d[1] = d0

self.assertRaises(RecursionError, repr, d)

def test_eq(self):

self.assertEqual(self._empty_mapping(), self._empty_mapping())

self.assertEqual(self._full_mapping({1: 2}),

self._full_mapping({1: 2}))

class Exc(Exception): pass

class BadCmp(object):

def __eq__(self, other):

raise Exc()

def __hash__(self):

return 1

d1 = self._full_mapping({BadCmp(): 1})

d2 = self._full_mapping({1: 1})

self.assertRaises(Exc, lambda: BadCmp()==1)

self.assertRaises(Exc, lambda: d1==d2)

def test_setdefault(self):

TestMappingProtocol.test_setdefault(self)

class Exc(Exception): pass

class BadHash(object):

fail = False

def __hash__(self):

if self.fail:

raise Exc()

else:

return 42

d = self._empty_mapping()

x = BadHash()

d[x] = 42

x.fail = True

self.assertRaises(Exc, d.setdefault, x, [])

cpython/Lib/test/mapping_tests.py at 3.15 · python/cpython · GitHub

Repository navigation

Expand file tree

Breadcrumbs

mapping_tests.py

Latest commit

History

Breadcrumbs

mapping_tests.py

File metadata and controls