Hide keyboard shortcuts

Hot-keys on this page

r m x p   toggle line displays

j k   next/prev highlighted chunk

0   (zero) top of page

1   (one) first highlighted chunk

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

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

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

695

696

697

698

699

700

701

702

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

735

736

737

738

739

740

741

742

743

744

745

746

747

748

749

750

751

752

753

754

755

756

757

758

759

760

761

762

763

764

765

766

767

768

769

770

771

772

773

774

775

776

777

778

779

780

781

782

783

784

785

786

787

788

789

790

791

792

793

794

795

796

797

798

799

800

801

802

803

804

805

806

807

808

809

810

811

812

813

814

815

816

817

818

819

820

821

822

823

824

825

826

827

828

829

830

831

832

833

834

835

836

837

838

839

840

841

842

843

844

845

846

847

848

849

850

851

852

853

854

855

856

857

858

859

860

861

862

863

864

865

866

867

868

869

870

871

872

873

874

875

876

877

878

879

880

881

882

883

884

885

886

887

888

889

890

891

892

893

894

895

896

897

898

899

900

901

902

903

904

905

906

907

908

909

910

911

912

913

914

915

916

917

918

919

920

921

922

923

924

925

926

927

928

929

930

931

932

933

934

935

936

937

938

939

940

941

942

943

944

945

946

947

948

949

950

951

952

953

954

955

956

957

958

959

960

961

962

963

964

965

966

967

968

969

970

971

972

973

974

975

976

977

978

979

980

981

982

983

984

985

986

987

988

989

990

991

992

993

994

995

996

997

998

999

1000

1001

1002

1003

1004

1005

1006

1007

1008

1009

1010

1011

1012

1013

1014

1015

1016

1017

1018

1019

1020

1021

1022

1023

1024

1025

1026

1027

1028

1029

1030

1031

1032

1033

1034

1035

1036

1037

1038

1039

1040

1041

1042

1043

1044

1045

1046

1047

1048

1049

1050

1051

1052

1053

1054

1055

1056

1057

1058

1059

1060

1061

1062

1063

1064

1065

1066

1067

1068

1069

1070

1071

1072

1073

1074

1075

1076

1077

1078

1079

1080

1081

1082

1083

1084

1085

1086

1087

1088

1089

1090

1091

1092

1093

1094

1095

1096

1097

1098

1099

1100

1101

1102

1103

1104

1105

1106

1107

1108

1109

1110

1111

1112

1113

1114

1115

1116

1117

1118

1119

1120

1121

1122

1123

1124

1125

1126

1127

1128

1129

1130

1131

1132

1133

1134

1135

1136

1137

1138

1139

1140

1141

1142

1143

1144

1145

1146

1147

1148

1149

1150

1151

1152

1153

1154

1155

1156

1157

1158

1159

1160

1161

1162

1163

1164

1165

1166

1167

1168

1169

1170

1171

1172

1173

1174

1175

1176

1177

1178

1179

1180

1181

1182

1183

1184

1185

1186

1187

1188

1189

1190

1191

1192

1193

1194

1195

1196

1197

1198

1199

1200

1201

1202

1203

1204

1205

1206

1207

1208

1209

1210

1211

1212

1213

1214

1215

1216

1217

1218

1219

1220

1221

1222

1223

1224

1225

1226

1227

1228

1229

1230

1231

1232

1233

1234

1235

1236

1237

1238

1239

1240

1241

1242

1243

1244

1245

1246

1247

1248

1249

1250

1251

1252

1253

1254

1255

1256

1257

1258

1259

1260

1261

1262

1263

1264

1265

1266

1267

1268

1269

1270

1271

1272

1273

1274

1275

1276

1277

1278

1279

1280

1281

1282

1283

1284

1285

1286

1287

1288

1289

1290

1291

1292

1293

1294

1295

1296

1297

1298

1299

1300

1301

1302

1303

1304

1305

1306

1307

1308

1309

1310

1311

1312

1313

1314

1315

1316

1317

1318

1319

1320

1321

1322

1323

1324

1325

1326

1327

1328

1329

1330

1331

1332

1333

1334

1335

1336

1337

1338

1339

1340

1341

1342

1343

1344

1345

1346

1347

1348

1349

1350

1351

1352

1353

1354

1355

1356

1357

1358

1359

1360

1361

1362

1363

1364

1365

1366

1367

1368

1369

1370

1371

1372

1373

1374

1375

1376

1377

1378

1379

1380

1381

1382

1383

1384

1385

1386

1387

1388

1389

1390

1391

1392

1393

1394

1395

1396

1397

1398

1399

1400

1401

1402

1403

1404

1405

1406

1407

1408

1409

1410

1411

1412

1413

1414

1415

1416

1417

1418

1419

1420

1421

1422

1423

1424

1425

1426

1427

1428

1429

1430

1431

1432

1433

1434

1435

1436

1437

1438

1439

1440

1441

1442

1443

1444

1445

1446

1447

1448

1449

1450

1451

1452

1453

1454

1455

1456

1457

1458

1459

1460

1461

1462

1463

1464

1465

1466

1467

1468

1469

1470

1471

1472

1473

1474

1475

1476

1477

1478

1479

1480

1481

1482

1483

1484

1485

1486

1487

1488

1489

1490

1491

1492

1493

1494

1495

1496

1497

1498

1499

1500

1501

1502

1503

1504

1505

1506

1507

1508

1509

1510

1511

1512

1513

1514

1515

1516

1517

1518

1519

1520

1521

1522

1523

1524

1525

1526

1527

1528

1529

1530

1531

1532

1533

1534

1535

1536

1537

1538

1539

1540

1541

1542

1543

1544

1545

1546

1547

1548

1549

1550

1551

1552

1553

1554

1555

1556

1557

1558

1559

1560

1561

1562

1563

1564

1565

1566

1567

1568

1569

1570

1571

1572

1573

1574

1575

1576

1577

1578

1579

1580

1581

1582

1583

1584

1585

1586

1587

1588

1589

1590

1591

1592

1593

1594

1595

1596

1597

1598

1599

1600

1601

1602

1603

1604

1605

1606

1607

1608

1609

1610

1611

1612

1613

1614

1615

1616

1617

1618

1619

1620

1621

1622

1623

1624

1625

1626

1627

1628

1629

1630

1631

1632

1633

1634

1635

1636

1637

1638

1639

1640

1641

1642

1643

1644

1645

1646

1647

1648

1649

1650

1651

1652

1653

1654

1655

1656

1657

1658

1659

1660

1661

1662

1663

1664

1665

1666

1667

1668

1669

1670

1671

1672

1673

1674

1675

1676

1677

1678

1679

1680

1681

1682

1683

1684

1685

1686

1687

1688

1689

1690

1691

1692

1693

1694

1695

1696

1697

1698

1699

1700

1701

1702

1703

1704

1705

1706

1707

1708

1709

1710

1711

1712

1713

1714

1715

1716

1717

1718

1719

1720

1721

1722

1723

1724

1725

1726

1727

1728

1729

1730

1731

1732

1733

1734

1735

1736

1737

1738

1739

1740

1741

1742

1743

1744

1745

1746

1747

1748

1749

1750

1751

1752

1753

1754

1755

1756

1757

1758

1759

1760

1761

1762

1763

1764

1765

1766

1767

1768

1769

1770

1771

1772

1773

1774

1775

1776

1777

1778

1779

1780

1781

1782

1783

1784

1785

1786

1787

1788

1789

1790

1791

1792

1793

1794

1795

1796

1797

1798

1799

1800

1801

1802

1803

1804

1805

1806

1807

1808

1809

1810

1811

1812

1813

1814

1815

1816

1817

1818

1819

1820

1821

1822

1823

1824

1825

1826

1827

1828

1829

1830

1831

1832

1833

1834

1835

1836

1837

1838

1839

1840

1841

1842

1843

1844

1845

1846

1847

1848

1849

1850

1851

1852

1853

1854

1855

1856

1857

1858

1859

1860

1861

1862

1863

1864

1865

1866

1867

1868

1869

1870

1871

1872

1873

1874

1875

1876

1877

1878

1879

1880

1881

1882

1883

1884

1885

1886

1887

1888

1889

1890

1891

1892

1893

1894

1895

1896

1897

1898

1899

1900

1901

1902

1903

1904

1905

1906

1907

1908

1909

1910

1911

1912

1913

1914

1915

1916

1917

1918

1919

1920

1921

1922

1923

1924

1925

1926

1927

1928

1929

1930

1931

1932

1933

1934

1935

1936

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025

2026

2027

2028

2029

2030

2031

2032

2033

2034

2035

2036

2037

2038

2039

2040

2041

2042

2043

2044

2045

2046

2047

2048

2049

2050

2051

2052

2053

2054

2055

2056

2057

2058

2059

2060

2061

2062

2063

2064

2065

2066

2067

2068

2069

2070

2071

2072

2073

2074

2075

2076

2077

2078

2079

2080

2081

2082

2083

2084

2085

2086

2087

2088

2089

2090

2091

2092

2093

2094

2095

2096

2097

2098

2099

2100

2101

2102

2103

2104

2105

2106

2107

2108

2109

2110

2111

2112

2113

2114

2115

2116

2117

2118

2119

2120

2121

2122

2123

2124

2125

2126

2127

2128

2129

2130

2131

2132

2133

2134

2135

2136

2137

2138

2139

2140

2141

2142

2143

2144

2145

2146

2147

2148

2149

2150

2151

2152

2153

2154

2155

2156

2157

2158

2159

2160

2161

2162

2163

2164

2165

2166

2167

2168

2169

2170

2171

2172

2173

2174

2175

2176

2177

2178

2179

2180

2181

2182

2183

2184

2185

2186

2187

2188

2189

2190

2191

2192

2193

2194

2195

2196

2197

2198

2199

2200

2201

2202

2203

2204

2205

2206

2207

2208

2209

2210

2211

2212

2213

2214

2215

2216

2217

2218

2219

""" 

This is our testing framework. 

 

Goals: 

 

* it should be compatible with py.test and operate very similarly 

(or identically) 

* doesn't require any external dependencies 

* preferably all the functionality should be in this file only 

* no magic, just import the test file and execute the test functions, that's it 

* portable 

 

""" 

 

from __future__ import print_function, division 

 

import os 

import sys 

import platform 

import inspect 

import traceback 

import pdb 

import re 

import linecache 

import time 

from fnmatch import fnmatch 

from timeit import default_timer as clock 

import doctest as pdoctest # avoid clashing with our doctest() function 

from doctest import DocTestFinder, DocTestRunner 

import random 

import subprocess 

import signal 

import stat 

from inspect import isgeneratorfunction 

 

from sympy.core.cache import clear_cache 

from sympy.core.compatibility import exec_, PY3, string_types, range 

from sympy.utilities.misc import find_executable 

from sympy.external import import_module 

from sympy.utilities.exceptions import SymPyDeprecationWarning 

 

IS_WINDOWS = (os.name == 'nt') 

 

 

class Skipped(Exception): 

pass 

 

import __future__ 

# add more flags ?? 

future_flags = __future__.division.compiler_flag 

 

def _indent(s, indent=4): 

""" 

Add the given number of space characters to the beginning of 

every non-blank line in ``s``, and return the result. 

If the string ``s`` is Unicode, it is encoded using the stdout 

encoding and the ``backslashreplace`` error handler. 

""" 

# After a 2to3 run the below code is bogus, so wrap it with a version check 

if not PY3: 

if isinstance(s, unicode): 

s = s.encode(pdoctest._encoding, 'backslashreplace') 

# This regexp matches the start of non-blank lines: 

return re.sub('(?m)^(?!$)', indent*' ', s) 

 

pdoctest._indent = _indent 

 

# ovverride reporter to maintain windows and python3 

 

 

def _report_failure(self, out, test, example, got): 

""" 

Report that the given example failed. 

""" 

s = self._checker.output_difference(example, got, self.optionflags) 

s = s.encode('raw_unicode_escape').decode('utf8', 'ignore') 

out(self._failure_header(test, example) + s) 

 

if PY3 and IS_WINDOWS: 

DocTestRunner.report_failure = _report_failure 

 

 

def convert_to_native_paths(lst): 

""" 

Converts a list of '/' separated paths into a list of 

native (os.sep separated) paths and converts to lowercase 

if the system is case insensitive. 

""" 

newlst = [] 

for i, rv in enumerate(lst): 

rv = os.path.join(*rv.split("/")) 

# on windows the slash after the colon is dropped 

if sys.platform == "win32": 

pos = rv.find(':') 

if pos != -1: 

if rv[pos + 1] != '\\': 

rv = rv[:pos + 1] + '\\' + rv[pos + 1:] 

newlst.append(sys_normcase(rv)) 

return newlst 

 

 

def get_sympy_dir(): 

""" 

Returns the root sympy directory and set the global value 

indicating whether the system is case sensitive or not. 

""" 

global sys_case_insensitive 

 

this_file = os.path.abspath(__file__) 

sympy_dir = os.path.join(os.path.dirname(this_file), "..", "..") 

sympy_dir = os.path.normpath(sympy_dir) 

sys_case_insensitive = (os.path.isdir(sympy_dir) and 

os.path.isdir(sympy_dir.lower()) and 

os.path.isdir(sympy_dir.upper())) 

return sys_normcase(sympy_dir) 

 

 

def sys_normcase(f): 

if sys_case_insensitive: # global defined after call to get_sympy_dir() 

return f.lower() 

return f 

 

 

def setup_pprint(): 

from sympy import pprint_use_unicode, init_printing 

 

# force pprint to be in ascii mode in doctests 

pprint_use_unicode(False) 

 

# hook our nice, hash-stable strprinter 

init_printing(pretty_print=False) 

 

 

def run_in_subprocess_with_hash_randomization(function, function_args=(), 

function_kwargs={}, command=sys.executable, 

module='sympy.utilities.runtests', force=False): 

""" 

Run a function in a Python subprocess with hash randomization enabled. 

 

If hash randomization is not supported by the version of Python given, it 

returns False. Otherwise, it returns the exit value of the command. The 

function is passed to sys.exit(), so the return value of the function will 

be the return value. 

 

The environment variable PYTHONHASHSEED is used to seed Python's hash 

randomization. If it is set, this function will return False, because 

starting a new subprocess is unnecessary in that case. If it is not set, 

one is set at random, and the tests are run. Note that if this 

environment variable is set when Python starts, hash randomization is 

automatically enabled. To force a subprocess to be created even if 

PYTHONHASHSEED is set, pass ``force=True``. This flag will not force a 

subprocess in Python versions that do not support hash randomization (see 

below), because those versions of Python do not support the ``-R`` flag. 

 

``function`` should be a string name of a function that is importable from 

the module ``module``, like "_test". The default for ``module`` is 

"sympy.utilities.runtests". ``function_args`` and ``function_kwargs`` 

should be a repr-able tuple and dict, respectively. The default Python 

command is sys.executable, which is the currently running Python command. 

 

This function is necessary because the seed for hash randomization must be 

set by the environment variable before Python starts. Hence, in order to 

use a predetermined seed for tests, we must start Python in a separate 

subprocess. 

 

Hash randomization was added in the minor Python versions 2.6.8, 2.7.3, 

3.1.5, and 3.2.3, and is enabled by default in all Python versions after 

and including 3.3.0. 

 

Examples 

======== 

 

>>> from sympy.utilities.runtests import ( 

... run_in_subprocess_with_hash_randomization) 

>>> # run the core tests in verbose mode 

>>> run_in_subprocess_with_hash_randomization("_test", 

... function_args=("core",), 

... function_kwargs={'verbose': True}) # doctest: +SKIP 

# Will return 0 if sys.executable supports hash randomization and tests 

# pass, 1 if they fail, and False if it does not support hash 

# randomization. 

 

""" 

# Note, we must return False everywhere, not None, as subprocess.call will 

# sometimes return None. 

 

# First check if the Python version supports hash randomization 

# If it doesn't have this support, it won't reconize the -R flag 

p = subprocess.Popen([command, "-RV"], stdout=subprocess.PIPE, 

stderr=subprocess.STDOUT) 

p.communicate() 

if p.returncode != 0: 

return False 

 

hash_seed = os.getenv("PYTHONHASHSEED") 

if not hash_seed: 

os.environ["PYTHONHASHSEED"] = str(random.randrange(2**32)) 

else: 

if not force: 

return False 

# Now run the command 

commandstring = ("import sys; from %s import %s;sys.exit(%s(*%s, **%s))" % 

(module, function, function, repr(function_args), 

repr(function_kwargs))) 

 

try: 

p = subprocess.Popen([command, "-R", "-c", commandstring]) 

p.communicate() 

except KeyboardInterrupt: 

p.wait() 

finally: 

# Put the environment variable back, so that it reads correctly for 

# the current Python process. 

if hash_seed is None: 

del os.environ["PYTHONHASHSEED"] 

else: 

os.environ["PYTHONHASHSEED"] = hash_seed 

return p.returncode 

 

 

def run_all_tests(test_args=(), test_kwargs={}, doctest_args=(), 

doctest_kwargs={}, examples_args=(), examples_kwargs={'quiet': True}): 

""" 

Run all tests. 

 

Right now, this runs the regular tests (bin/test), the doctests 

(bin/doctest), the examples (examples/all.py), and the sage tests (see 

sympy/external/tests/test_sage.py). 

 

This is what ``setup.py test`` uses. 

 

You can pass arguments and keyword arguments to the test functions that 

support them (for now, test, doctest, and the examples). See the 

docstrings of those functions for a description of the available options. 

 

For example, to run the solvers tests with colors turned off: 

 

>>> from sympy.utilities.runtests import run_all_tests 

>>> run_all_tests(test_args=("solvers",), 

... test_kwargs={"colors:False"}) # doctest: +SKIP 

 

""" 

tests_successful = True 

 

try: 

# Regular tests 

if not test(*test_args, **test_kwargs): 

# some regular test fails, so set the tests_successful 

# flag to false and continue running the doctests 

tests_successful = False 

 

# Doctests 

print() 

if not doctest(*doctest_args, **doctest_kwargs): 

tests_successful = False 

 

# Examples 

print() 

sys.path.append("examples") 

from all import run_examples # examples/all.py 

if not run_examples(*examples_args, **examples_kwargs): 

tests_successful = False 

 

# Sage tests 

if sys.platform != "win32" and not PY3 and os.path.exists("bin/test"): 

# run Sage tests; Sage currently doesn't support Windows or Python 3 

# Only run Sage tests if 'bin/test' is present (it is missing from 

# our release because everything in the 'bin' directory gets 

# installed). 

dev_null = open(os.devnull, 'w') 

if subprocess.call("sage -v", shell=True, stdout=dev_null, 

stderr=dev_null) == 0: 

if subprocess.call("sage -python bin/test " 

"sympy/external/tests/test_sage.py", 

shell=True, cwd=os.path.dirname(os.path.dirname(os.path.dirname(__file__)))) != 0: 

tests_successful = False 

 

if tests_successful: 

return 

else: 

# Return nonzero exit code 

sys.exit(1) 

except KeyboardInterrupt: 

print() 

print("DO *NOT* COMMIT!") 

sys.exit(1) 

 

 

def test(*paths, **kwargs): 

""" 

Run tests in the specified test_*.py files. 

 

Tests in a particular test_*.py file are run if any of the given strings 

in ``paths`` matches a part of the test file's path. If ``paths=[]``, 

tests in all test_*.py files are run. 

 

Notes: 

 

- If sort=False, tests are run in random order (not default). 

- Paths can be entered in native system format or in unix, 

forward-slash format. 

- Files that are on the blacklist can be tested by providing 

their path; they are only excluded if no paths are given. 

 

**Explanation of test results** 

 

====== =============================================================== 

Output Meaning 

====== =============================================================== 

. passed 

F failed 

X XPassed (expected to fail but passed) 

f XFAILed (expected to fail and indeed failed) 

s skipped 

w slow 

T timeout (e.g., when ``--timeout`` is used) 

K KeyboardInterrupt (when running the slow tests with ``--slow``, 

you can interrupt one of them without killing the test runner) 

====== =============================================================== 

 

 

Colors have no additional meaning and are used just to facilitate 

interpreting the output. 

 

Examples 

======== 

 

>>> import sympy 

 

Run all tests: 

 

>>> sympy.test() # doctest: +SKIP 

 

Run one file: 

 

>>> sympy.test("sympy/core/tests/test_basic.py") # doctest: +SKIP 

>>> sympy.test("_basic") # doctest: +SKIP 

 

Run all tests in sympy/functions/ and some particular file: 

 

>>> sympy.test("sympy/core/tests/test_basic.py", 

... "sympy/functions") # doctest: +SKIP 

 

Run all tests in sympy/core and sympy/utilities: 

 

>>> sympy.test("/core", "/util") # doctest: +SKIP 

 

Run specific test from a file: 

 

>>> sympy.test("sympy/core/tests/test_basic.py", 

... kw="test_equality") # doctest: +SKIP 

 

Run specific test from any file: 

 

>>> sympy.test(kw="subs") # doctest: +SKIP 

 

Run the tests with verbose mode on: 

 

>>> sympy.test(verbose=True) # doctest: +SKIP 

 

Don't sort the test output: 

 

>>> sympy.test(sort=False) # doctest: +SKIP 

 

Turn on post-mortem pdb: 

 

>>> sympy.test(pdb=True) # doctest: +SKIP 

 

Turn off colors: 

 

>>> sympy.test(colors=False) # doctest: +SKIP 

 

Force colors, even when the output is not to a terminal (this is useful, 

e.g., if you are piping to ``less -r`` and you still want colors) 

 

>>> sympy.test(force_colors=False) # doctest: +SKIP 

 

The traceback verboseness can be set to "short" or "no" (default is 

"short") 

 

>>> sympy.test(tb='no') # doctest: +SKIP 

 

The ``split`` option can be passed to split the test run into parts. The 

split currently only splits the test files, though this may change in the 

future. ``split`` should be a string of the form 'a/b', which will run 

part ``a`` of ``b``. For instance, to run the first half of the test suite: 

 

>>> sympy.test(split='1/2') # doctest: +SKIP 

 

You can disable running the tests in a separate subprocess using 

``subprocess=False``. This is done to support seeding hash randomization, 

which is enabled by default in the Python versions where it is supported. 

If subprocess=False, hash randomization is enabled/disabled according to 

whether it has been enabled or not in the calling Python process. 

However, even if it is enabled, the seed cannot be printed unless it is 

called from a new Python process. 

 

Hash randomization was added in the minor Python versions 2.6.8, 2.7.3, 

3.1.5, and 3.2.3, and is enabled by default in all Python versions after 

and including 3.3.0. 

 

If hash randomization is not supported ``subprocess=False`` is used 

automatically. 

 

>>> sympy.test(subprocess=False) # doctest: +SKIP 

 

To set the hash randomization seed, set the environment variable 

``PYTHONHASHSEED`` before running the tests. This can be done from within 

Python using 

 

>>> import os 

>>> os.environ['PYTHONHASHSEED'] = '42' # doctest: +SKIP 

 

Or from the command line using 

 

$ PYTHONHASHSEED=42 ./bin/test 

 

If the seed is not set, a random seed will be chosen. 

 

Note that to reproduce the same hash values, you must use both the same seed 

as well as the same architecture (32-bit vs. 64-bit). 

 

""" 

subprocess = kwargs.pop("subprocess", True) 

rerun = kwargs.pop("rerun", 0) 

# count up from 0, do not print 0 

print_counter = lambda i : (print("rerun %d" % (rerun-i)) 

if rerun-i else None) 

 

if subprocess: 

# loop backwards so last i is 0 

for i in range(rerun, -1, -1): 

print_counter(i) 

ret = run_in_subprocess_with_hash_randomization("_test", 

function_args=paths, function_kwargs=kwargs) 

if ret is False: 

break 

val = not bool(ret) 

# exit on the first failure or if done 

if not val or i == 0: 

return val 

 

# rerun even if hash randomization is not supported 

for i in range(rerun, -1, -1): 

print_counter(i) 

val = not bool(_test(*paths, **kwargs)) 

if not val or i == 0: 

return val 

 

 

def _test(*paths, **kwargs): 

""" 

Internal function that actually runs the tests. 

 

All keyword arguments from ``test()`` are passed to this function except for 

``subprocess``. 

 

Returns 0 if tests passed and 1 if they failed. See the docstring of 

``test()`` for more information. 

""" 

verbose = kwargs.get("verbose", False) 

tb = kwargs.get("tb", "short") 

kw = kwargs.get("kw", None) or () 

# ensure that kw is a tuple 

if isinstance(kw, str): 

kw = (kw, ) 

post_mortem = kwargs.get("pdb", False) 

colors = kwargs.get("colors", True) 

force_colors = kwargs.get("force_colors", False) 

sort = kwargs.get("sort", True) 

seed = kwargs.get("seed", None) 

if seed is None: 

seed = random.randrange(100000000) 

timeout = kwargs.get("timeout", False) 

slow = kwargs.get("slow", False) 

enhance_asserts = kwargs.get("enhance_asserts", False) 

split = kwargs.get('split', None) 

blacklist = kwargs.get('blacklist', []) 

blacklist = convert_to_native_paths(blacklist) 

fast_threshold = kwargs.get('fast_threshold', None) 

slow_threshold = kwargs.get('slow_threshold', None) 

r = PyTestReporter(verbose=verbose, tb=tb, colors=colors, 

force_colors=force_colors, split=split) 

t = SymPyTests(r, kw, post_mortem, seed, 

fast_threshold=fast_threshold, 

slow_threshold=slow_threshold) 

 

# Disable warnings for external modules 

import sympy.external 

sympy.external.importtools.WARN_OLD_VERSION = False 

sympy.external.importtools.WARN_NOT_INSTALLED = False 

 

# Show deprecation warnings 

import warnings 

warnings.simplefilter("error", SymPyDeprecationWarning) 

warnings.filterwarnings('error', '.*', DeprecationWarning, module='sympy.*') 

 

test_files = t.get_test_files('sympy') 

 

not_blacklisted = [f for f in test_files 

if not any(b in f for b in blacklist)] 

 

if len(paths) == 0: 

matched = not_blacklisted 

else: 

paths = convert_to_native_paths(paths) 

matched = [] 

for f in not_blacklisted: 

basename = os.path.basename(f) 

for p in paths: 

if p in f or fnmatch(basename, p): 

matched.append(f) 

break 

 

if slow: 

# Seed to evenly shuffle slow tests among splits 

random.seed(41992450) 

random.shuffle(matched) 

 

if split: 

matched = split_list(matched, split) 

 

t._testfiles.extend(matched) 

 

return int(not t.test(sort=sort, timeout=timeout, 

slow=slow, enhance_asserts=enhance_asserts)) 

 

 

def doctest(*paths, **kwargs): 

""" 

Runs doctests in all \*.py files in the sympy directory which match 

any of the given strings in ``paths`` or all tests if paths=[]. 

 

Notes: 

 

- Paths can be entered in native system format or in unix, 

forward-slash format. 

- Files that are on the blacklist can be tested by providing 

their path; they are only excluded if no paths are given. 

 

Examples 

======== 

 

>>> import sympy 

 

Run all tests: 

 

>>> sympy.doctest() # doctest: +SKIP 

 

Run one file: 

 

>>> sympy.doctest("sympy/core/basic.py") # doctest: +SKIP 

>>> sympy.doctest("polynomial.rst") # doctest: +SKIP 

 

Run all tests in sympy/functions/ and some particular file: 

 

>>> sympy.doctest("/functions", "basic.py") # doctest: +SKIP 

 

Run any file having polynomial in its name, doc/src/modules/polynomial.rst, 

sympy/functions/special/polynomials.py, and sympy/polys/polynomial.py: 

 

>>> sympy.doctest("polynomial") # doctest: +SKIP 

 

The ``split`` option can be passed to split the test run into parts. The 

split currently only splits the test files, though this may change in the 

future. ``split`` should be a string of the form 'a/b', which will run 

part ``a`` of ``b``. Note that the regular doctests and the Sphinx 

doctests are split independently. For instance, to run the first half of 

the test suite: 

 

>>> sympy.doctest(split='1/2') # doctest: +SKIP 

 

The ``subprocess`` and ``verbose`` options are the same as with the function 

``test()``. See the docstring of that function for more information. 

 

""" 

subprocess = kwargs.pop("subprocess", True) 

rerun = kwargs.pop("rerun", 0) 

# count up from 0, do not print 0 

print_counter = lambda i : (print("rerun %d" % (rerun-i)) 

if rerun-i else None) 

 

if subprocess: 

# loop backwards so last i is 0 

for i in range(rerun, -1, -1): 

print_counter(i) 

ret = run_in_subprocess_with_hash_randomization("_doctest", 

function_args=paths, function_kwargs=kwargs) 

if ret is False: 

break 

val = not bool(ret) 

# exit on the first failure or if done 

if not val or i == 0: 

return val 

 

# rerun even if hash randomization is not supported 

for i in range(rerun, -1, -1): 

print_counter(i) 

val = not bool(_doctest(*paths, **kwargs)) 

if not val or i == 0: 

return val 

 

 

def _doctest(*paths, **kwargs): 

""" 

Internal function that actually runs the doctests. 

 

All keyword arguments from ``doctest()`` are passed to this function 

except for ``subprocess``. 

 

Returns 0 if tests passed and 1 if they failed. See the docstrings of 

``doctest()`` and ``test()`` for more information. 

""" 

normal = kwargs.get("normal", False) 

verbose = kwargs.get("verbose", False) 

colors = kwargs.get("colors", True) 

force_colors = kwargs.get("force_colors", False) 

blacklist = kwargs.get("blacklist", []) 

split = kwargs.get('split', None) 

blacklist.extend([ 

"doc/src/modules/plotting.rst", # generates live plots 

"sympy/physics/gaussopt.py", # raises deprecation warning 

"sympy/galgebra.py", # raises ImportError 

]) 

 

if import_module('numpy') is None: 

blacklist.extend([ 

"sympy/plotting/experimental_lambdify.py", 

"sympy/plotting/plot_implicit.py", 

"examples/advanced/autowrap_integrators.py", 

"examples/advanced/autowrap_ufuncify.py", 

"examples/intermediate/sample.py", 

"examples/intermediate/mplot2d.py", 

"examples/intermediate/mplot3d.py", 

"doc/src/modules/numeric-computation.rst" 

]) 

else: 

if import_module('matplotlib') is None: 

blacklist.extend([ 

"examples/intermediate/mplot2d.py", 

"examples/intermediate/mplot3d.py" 

]) 

else: 

# Use a non-windowed backend, so that the tests work on Travis 

import matplotlib 

matplotlib.use('Agg') 

 

# don't display matplotlib windows 

from sympy.plotting.plot import unset_show 

unset_show() 

 

 

if import_module('pyglet') is None: 

blacklist.extend(["sympy/plotting/pygletplot"]) 

 

if import_module('theano') is None: 

blacklist.extend(["doc/src/modules/numeric-computation.rst"]) 

 

# disabled because of doctest failures in asmeurer's bot 

blacklist.extend([ 

"sympy/utilities/autowrap.py", 

"examples/advanced/autowrap_integrators.py", 

"examples/advanced/autowrap_ufuncify.py" 

]) 

 

# blacklist these modules until issue 4840 is resolved 

blacklist.extend([ 

"sympy/conftest.py", 

"sympy/utilities/benchmarking.py" 

]) 

 

blacklist = convert_to_native_paths(blacklist) 

 

# Disable warnings for external modules 

import sympy.external 

sympy.external.importtools.WARN_OLD_VERSION = False 

sympy.external.importtools.WARN_NOT_INSTALLED = False 

 

# Show deprecation warnings 

import warnings 

warnings.simplefilter("error", SymPyDeprecationWarning) 

warnings.filterwarnings('error', '.*', DeprecationWarning, module='sympy.*') 

 

r = PyTestReporter(verbose, split=split, colors=colors,\ 

force_colors=force_colors) 

t = SymPyDocTests(r, normal) 

 

test_files = t.get_test_files('sympy') 

test_files.extend(t.get_test_files('examples', init_only=False)) 

 

not_blacklisted = [f for f in test_files 

if not any(b in f for b in blacklist)] 

if len(paths) == 0: 

matched = not_blacklisted 

else: 

# take only what was requested...but not blacklisted items 

# and allow for partial match anywhere or fnmatch of name 

paths = convert_to_native_paths(paths) 

matched = [] 

for f in not_blacklisted: 

basename = os.path.basename(f) 

for p in paths: 

if p in f or fnmatch(basename, p): 

matched.append(f) 

break 

 

if split: 

matched = split_list(matched, split) 

 

t._testfiles.extend(matched) 

 

# run the tests and record the result for this *py portion of the tests 

if t._testfiles: 

failed = not t.test() 

else: 

failed = False 

 

# N.B. 

# -------------------------------------------------------------------- 

# Here we test *.rst files at or below doc/src. Code from these must 

# be self supporting in terms of imports since there is no importing 

# of necessary modules by doctest.testfile. If you try to pass *.py 

# files through this they might fail because they will lack the needed 

# imports and smarter parsing that can be done with source code. 

# 

test_files = t.get_test_files('doc/src', '*.rst', init_only=False) 

test_files.sort() 

 

not_blacklisted = [f for f in test_files 

if not any(b in f for b in blacklist)] 

 

if len(paths) == 0: 

matched = not_blacklisted 

else: 

# Take only what was requested as long as it's not on the blacklist. 

# Paths were already made native in *py tests so don't repeat here. 

# There's no chance of having a *py file slip through since we 

# only have *rst files in test_files. 

matched = [] 

for f in not_blacklisted: 

basename = os.path.basename(f) 

for p in paths: 

if p in f or fnmatch(basename, p): 

matched.append(f) 

break 

 

if split: 

matched = split_list(matched, split) 

 

setup_pprint() 

first_report = True 

for rst_file in matched: 

if not os.path.isfile(rst_file): 

continue 

old_displayhook = sys.displayhook 

try: 

out = sympytestfile( 

rst_file, module_relative=False, encoding='utf-8', 

optionflags=pdoctest.ELLIPSIS | pdoctest.NORMALIZE_WHITESPACE | 

pdoctest.IGNORE_EXCEPTION_DETAIL) 

finally: 

# make sure we return to the original displayhook in case some 

# doctest has changed that 

sys.displayhook = old_displayhook 

 

rstfailed, tested = out 

if tested: 

failed = rstfailed or failed 

if first_report: 

first_report = False 

msg = 'rst doctests start' 

if not t._testfiles: 

r.start(msg=msg) 

else: 

r.write_center(msg) 

print() 

# use as the id, everything past the first 'sympy' 

file_id = rst_file[rst_file.find('sympy') + len('sympy') + 1:] 

print(file_id, end=" ") 

# get at least the name out so it is know who is being tested 

wid = r.terminal_width - len(file_id) - 1 # update width 

test_file = '[%s]' % (tested) 

report = '[%s]' % (rstfailed or 'OK') 

print(''.join( 

[test_file, ' '*(wid - len(test_file) - len(report)), report]) 

) 

 

# the doctests for *py will have printed this message already if there was 

# a failure, so now only print it if there was intervening reporting by 

# testing the *rst as evidenced by first_report no longer being True. 

if not first_report and failed: 

print() 

print("DO *NOT* COMMIT!") 

 

return int(failed) 

 

sp = re.compile(r'([0-9]+)/([1-9][0-9]*)') 

 

def split_list(l, split): 

""" 

Splits a list into part a of b 

 

split should be a string of the form 'a/b'. For instance, '1/3' would give 

the split one of three. 

 

If the length of the list is not divisible by the number of splits, the 

last split will have more items. 

 

>>> from sympy.utilities.runtests import split_list 

>>> a = list(range(10)) 

>>> split_list(a, '1/3') 

[0, 1, 2] 

>>> split_list(a, '2/3') 

[3, 4, 5] 

>>> split_list(a, '3/3') 

[6, 7, 8, 9] 

""" 

m = sp.match(split) 

if not m: 

raise ValueError("split must be a string of the form a/b where a and b are ints") 

i, t = map(int, m.groups()) 

return l[(i - 1)*len(l)//t:i*len(l)//t] 

 

 

from collections import namedtuple 

SymPyTestResults = namedtuple('TestResults', 'failed attempted') 

 

 

def sympytestfile(filename, module_relative=True, name=None, package=None, 

globs=None, verbose=None, report=True, optionflags=0, 

extraglobs=None, raise_on_error=False, 

parser=pdoctest.DocTestParser(), encoding=None): 

 

""" 

Test examples in the given file. Return (#failures, #tests). 

 

Optional keyword arg ``module_relative`` specifies how filenames 

should be interpreted: 

 

- If ``module_relative`` is True (the default), then ``filename`` 

specifies a module-relative path. By default, this path is 

relative to the calling module's directory; but if the 

``package`` argument is specified, then it is relative to that 

package. To ensure os-independence, ``filename`` should use 

"/" characters to separate path segments, and should not 

be an absolute path (i.e., it may not begin with "/"). 

 

- If ``module_relative`` is False, then ``filename`` specifies an 

os-specific path. The path may be absolute or relative (to 

the current working directory). 

 

Optional keyword arg ``name`` gives the name of the test; by default 

use the file's basename. 

 

Optional keyword argument ``package`` is a Python package or the 

name of a Python package whose directory should be used as the 

base directory for a module relative filename. If no package is 

specified, then the calling module's directory is used as the base 

directory for module relative filenames. It is an error to 

specify ``package`` if ``module_relative`` is False. 

 

Optional keyword arg ``globs`` gives a dict to be used as the globals 

when executing examples; by default, use {}. A copy of this dict 

is actually used for each docstring, so that each docstring's 

examples start with a clean slate. 

 

Optional keyword arg ``extraglobs`` gives a dictionary that should be 

merged into the globals that are used to execute examples. By 

default, no extra globals are used. 

 

Optional keyword arg ``verbose`` prints lots of stuff if true, prints 

only failures if false; by default, it's true iff "-v" is in sys.argv. 

 

Optional keyword arg ``report`` prints a summary at the end when true, 

else prints nothing at the end. In verbose mode, the summary is 

detailed, else very brief (in fact, empty if all tests passed). 

 

Optional keyword arg ``optionflags`` or's together module constants, 

and defaults to 0. Possible values (see the docs for details): 

 

- DONT_ACCEPT_TRUE_FOR_1 

- DONT_ACCEPT_BLANKLINE 

- NORMALIZE_WHITESPACE 

- ELLIPSIS 

- SKIP 

- IGNORE_EXCEPTION_DETAIL 

- REPORT_UDIFF 

- REPORT_CDIFF 

- REPORT_NDIFF 

- REPORT_ONLY_FIRST_FAILURE 

 

Optional keyword arg ``raise_on_error`` raises an exception on the 

first unexpected exception or failure. This allows failures to be 

post-mortem debugged. 

 

Optional keyword arg ``parser`` specifies a DocTestParser (or 

subclass) that should be used to extract tests from the files. 

 

Optional keyword arg ``encoding`` specifies an encoding that should 

be used to convert the file to unicode. 

 

Advanced tomfoolery: testmod runs methods of a local instance of 

class doctest.Tester, then merges the results into (or creates) 

global Tester instance doctest.master. Methods of doctest.master 

can be called directly too, if you want to do something unusual. 

Passing report=0 to testmod is especially useful then, to delay 

displaying a summary. Invoke doctest.master.summarize(verbose) 

when you're done fiddling. 

""" 

if package and not module_relative: 

raise ValueError("Package may only be specified for module-" 

"relative paths.") 

 

# Relativize the path 

if not PY3: 

text, filename = pdoctest._load_testfile( 

filename, package, module_relative) 

if encoding is not None: 

text = text.decode(encoding) 

else: 

text, filename = pdoctest._load_testfile( 

filename, package, module_relative, encoding) 

 

# If no name was given, then use the file's name. 

if name is None: 

name = os.path.basename(filename) 

 

# Assemble the globals. 

if globs is None: 

globs = {} 

else: 

globs = globs.copy() 

if extraglobs is not None: 

globs.update(extraglobs) 

if '__name__' not in globs: 

globs['__name__'] = '__main__' 

 

if raise_on_error: 

runner = pdoctest.DebugRunner(verbose=verbose, optionflags=optionflags) 

else: 

runner = SymPyDocTestRunner(verbose=verbose, optionflags=optionflags) 

runner._checker = SymPyOutputChecker() 

 

# Read the file, convert it to a test, and run it. 

test = parser.get_doctest(text, globs, name, filename, 0) 

runner.run(test, compileflags=future_flags) 

 

if report: 

runner.summarize() 

 

if pdoctest.master is None: 

pdoctest.master = runner 

else: 

pdoctest.master.merge(runner) 

 

return SymPyTestResults(runner.failures, runner.tries) 

 

 

class SymPyTests(object): 

 

def __init__(self, reporter, kw="", post_mortem=False, 

seed=None, fast_threshold=None, slow_threshold=None): 

self._post_mortem = post_mortem 

self._kw = kw 

self._count = 0 

self._root_dir = sympy_dir 

self._reporter = reporter 

self._reporter.root_dir(self._root_dir) 

self._testfiles = [] 

self._seed = seed if seed is not None else random.random() 

 

# Defaults in seconds, from human / UX design limits 

# http://www.nngroup.com/articles/response-times-3-important-limits/ 

# 

# These defaults are *NOT* set in stone as we are measuring different 

# things, so others feel free to come up with a better yardstick :) 

if fast_threshold: 

self._fast_threshold = float(fast_threshold) 

else: 

self._fast_threshold = 0.1 

if slow_threshold: 

self._slow_threshold = float(slow_threshold) 

else: 

self._slow_threshold = 10 

 

def test(self, sort=False, timeout=False, slow=False, enhance_asserts=False): 

""" 

Runs the tests returning True if all tests pass, otherwise False. 

 

If sort=False run tests in random order. 

""" 

if sort: 

self._testfiles.sort() 

elif slow: 

pass 

else: 

random.seed(self._seed) 

random.shuffle(self._testfiles) 

self._reporter.start(self._seed) 

for f in self._testfiles: 

try: 

self.test_file(f, sort, timeout, slow, enhance_asserts) 

except KeyboardInterrupt: 

print(" interrupted by user") 

self._reporter.finish() 

raise 

return self._reporter.finish() 

 

def _enhance_asserts(self, source): 

from ast import (NodeTransformer, Compare, Name, Store, Load, Tuple, 

Assign, BinOp, Str, Mod, Assert, parse, fix_missing_locations) 

 

ops = {"Eq": '==', "NotEq": '!=', "Lt": '<', "LtE": '<=', 

"Gt": '>', "GtE": '>=', "Is": 'is', "IsNot": 'is not', 

"In": 'in', "NotIn": 'not in'} 

 

class Transform(NodeTransformer): 

def visit_Assert(self, stmt): 

if isinstance(stmt.test, Compare): 

compare = stmt.test 

values = [compare.left] + compare.comparators 

names = [ "_%s" % i for i, _ in enumerate(values) ] 

names_store = [ Name(n, Store()) for n in names ] 

names_load = [ Name(n, Load()) for n in names ] 

target = Tuple(names_store, Store()) 

value = Tuple(values, Load()) 

assign = Assign([target], value) 

new_compare = Compare(names_load[0], compare.ops, names_load[1:]) 

msg_format = "\n%s " + "\n%s ".join([ ops[op.__class__.__name__] for op in compare.ops ]) + "\n%s" 

msg = BinOp(Str(msg_format), Mod(), Tuple(names_load, Load())) 

test = Assert(new_compare, msg, lineno=stmt.lineno, col_offset=stmt.col_offset) 

return [assign, test] 

else: 

return stmt 

 

tree = parse(source) 

new_tree = Transform().visit(tree) 

return fix_missing_locations(new_tree) 

 

def test_file(self, filename, sort=True, timeout=False, slow=False, enhance_asserts=False): 

reporter = self._reporter 

funcs = [] 

try: 

gl = {'__file__': filename} 

try: 

if PY3: 

open_file = lambda: open(filename, encoding="utf8") 

else: 

open_file = lambda: open(filename) 

 

with open_file() as f: 

source = f.read() 

if self._kw: 

for l in source.splitlines(): 

if l.lstrip().startswith('def '): 

if any(l.find(k) != -1 for k in self._kw): 

break 

else: 

return 

 

if enhance_asserts: 

try: 

source = self._enhance_asserts(source) 

except ImportError: 

pass 

 

code = compile(source, filename, "exec") 

exec_(code, gl) 

except (SystemExit, KeyboardInterrupt): 

raise 

except ImportError: 

reporter.import_error(filename, sys.exc_info()) 

return 

except Exception: 

reporter.test_exception(sys.exc_info()) 

 

clear_cache() 

self._count += 1 

random.seed(self._seed) 

pytestfile = "" 

if "XFAIL" in gl: 

pytestfile = inspect.getsourcefile(gl["XFAIL"]) 

pytestfile2 = "" 

if "slow" in gl: 

pytestfile2 = inspect.getsourcefile(gl["slow"]) 

disabled = gl.get("disabled", False) 

if not disabled: 

# we need to filter only those functions that begin with 'test_' 

# that are defined in the testing file or in the file where 

# is defined the XFAIL decorator 

funcs = [gl[f] for f in gl.keys() if f.startswith("test_") and 

(inspect.isfunction(gl[f]) or inspect.ismethod(gl[f])) and 

(inspect.getsourcefile(gl[f]) == filename or 

inspect.getsourcefile(gl[f]) == pytestfile or 

inspect.getsourcefile(gl[f]) == pytestfile2)] 

if slow: 

funcs = [f for f in funcs if getattr(f, '_slow', False)] 

# Sorting of XFAILed functions isn't fixed yet :-( 

funcs.sort(key=lambda x: inspect.getsourcelines(x)[1]) 

i = 0 

while i < len(funcs): 

if isgeneratorfunction(funcs[i]): 

# some tests can be generators, that return the actual 

# test functions. We unpack it below: 

f = funcs.pop(i) 

for fg in f(): 

func = fg[0] 

args = fg[1:] 

fgw = lambda: func(*args) 

funcs.insert(i, fgw) 

i += 1 

else: 

i += 1 

# drop functions that are not selected with the keyword expression: 

funcs = [x for x in funcs if self.matches(x)] 

 

if not funcs: 

return 

except Exception: 

reporter.entering_filename(filename, len(funcs)) 

raise 

 

reporter.entering_filename(filename, len(funcs)) 

if not sort: 

random.shuffle(funcs) 

 

for f in funcs: 

start = time.time() 

reporter.entering_test(f) 

try: 

if getattr(f, '_slow', False) and not slow: 

raise Skipped("Slow") 

if timeout: 

self._timeout(f, timeout) 

else: 

random.seed(self._seed) 

f() 

except KeyboardInterrupt: 

if getattr(f, '_slow', False): 

reporter.test_skip("KeyboardInterrupt") 

else: 

raise 

except Exception: 

if timeout: 

signal.alarm(0) # Disable the alarm. It could not be handled before. 

t, v, tr = sys.exc_info() 

if t is AssertionError: 

reporter.test_fail((t, v, tr)) 

if self._post_mortem: 

pdb.post_mortem(tr) 

elif t.__name__ == "Skipped": 

reporter.test_skip(v) 

elif t.__name__ == "XFail": 

reporter.test_xfail() 

elif t.__name__ == "XPass": 

reporter.test_xpass(v) 

else: 

reporter.test_exception((t, v, tr)) 

if self._post_mortem: 

pdb.post_mortem(tr) 

else: 

reporter.test_pass() 

taken = time.time() - start 

if taken > self._slow_threshold: 

reporter.slow_test_functions.append((f.__name__, taken)) 

if getattr(f, '_slow', False) and slow: 

if taken < self._fast_threshold: 

reporter.fast_test_functions.append((f.__name__, taken)) 

reporter.leaving_filename() 

 

def _timeout(self, function, timeout): 

def callback(x, y): 

signal.alarm(0) 

raise Skipped("Timeout") 

signal.signal(signal.SIGALRM, callback) 

signal.alarm(timeout) # Set an alarm with a given timeout 

function() 

signal.alarm(0) # Disable the alarm 

 

def matches(self, x): 

""" 

Does the keyword expression self._kw match "x"? Returns True/False. 

 

Always returns True if self._kw is "". 

""" 

if not self._kw: 

return True 

for kw in self._kw: 

if x.__name__.find(kw) != -1: 

return True 

return False 

 

def get_test_files(self, dir, pat='test_*.py'): 

""" 

Returns the list of test_*.py (default) files at or below directory 

``dir`` relative to the sympy home directory. 

""" 

dir = os.path.join(self._root_dir, convert_to_native_paths([dir])[0]) 

 

g = [] 

for path, folders, files in os.walk(dir): 

g.extend([os.path.join(path, f) for f in files if fnmatch(f, pat)]) 

 

return sorted([sys_normcase(gi) for gi in g]) 

 

 

class SymPyDocTests(object): 

 

def __init__(self, reporter, normal): 

self._count = 0 

self._root_dir = sympy_dir 

self._reporter = reporter 

self._reporter.root_dir(self._root_dir) 

self._normal = normal 

 

self._testfiles = [] 

 

def test(self): 

""" 

Runs the tests and returns True if all tests pass, otherwise False. 

""" 

self._reporter.start() 

for f in self._testfiles: 

try: 

self.test_file(f) 

except KeyboardInterrupt: 

print(" interrupted by user") 

self._reporter.finish() 

raise 

return self._reporter.finish() 

 

def test_file(self, filename): 

clear_cache() 

 

from sympy.core.compatibility import StringIO 

 

rel_name = filename[len(self._root_dir) + 1:] 

dirname, file = os.path.split(filename) 

module = rel_name.replace(os.sep, '.')[:-3] 

 

if rel_name.startswith("examples"): 

# Examples files do not have __init__.py files, 

# So we have to temporarily extend sys.path to import them 

sys.path.insert(0, dirname) 

module = file[:-3] # remove ".py" 

setup_pprint() 

try: 

module = pdoctest._normalize_module(module) 

tests = SymPyDocTestFinder().find(module) 

except (SystemExit, KeyboardInterrupt): 

raise 

except ImportError: 

self._reporter.import_error(filename, sys.exc_info()) 

return 

finally: 

if rel_name.startswith("examples"): 

del sys.path[0] 

 

tests = [test for test in tests if len(test.examples) > 0] 

# By default tests are sorted by alphabetical order by function name. 

# We sort by line number so one can edit the file sequentially from 

# bottom to top. However, if there are decorated functions, their line 

# numbers will be too large and for now one must just search for these 

# by text and function name. 

tests.sort(key=lambda x: -x.lineno) 

 

if not tests: 

return 

self._reporter.entering_filename(filename, len(tests)) 

for test in tests: 

assert len(test.examples) != 0 

 

# check if there are external dependencies which need to be met 

if '_doctest_depends_on' in test.globs: 

has_dependencies = self._process_dependencies(test.globs['_doctest_depends_on']) 

if has_dependencies is not True: 

# has_dependencies is either True or a message 

self._reporter.test_skip(v="\n" + has_dependencies) 

continue 

 

if self._reporter._verbose: 

self._reporter.write("\n{} ".format(test.name)) 

 

runner = SymPyDocTestRunner(optionflags=pdoctest.ELLIPSIS | 

pdoctest.NORMALIZE_WHITESPACE | 

pdoctest.IGNORE_EXCEPTION_DETAIL) 

runner._checker = SymPyOutputChecker() 

old = sys.stdout 

new = StringIO() 

sys.stdout = new 

# If the testing is normal, the doctests get importing magic to 

# provide the global namespace. If not normal (the default) then 

# then must run on their own; all imports must be explicit within 

# a function's docstring. Once imported that import will be 

# available to the rest of the tests in a given function's 

# docstring (unless clear_globs=True below). 

if not self._normal: 

test.globs = {} 

# if this is uncommented then all the test would get is what 

# comes by default with a "from sympy import *" 

#exec('from sympy import *') in test.globs 

test.globs['print_function'] = print_function 

try: 

f, t = runner.run(test, compileflags=future_flags, 

out=new.write, clear_globs=False) 

except KeyboardInterrupt: 

raise 

finally: 

sys.stdout = old 

if f > 0: 

self._reporter.doctest_fail(test.name, new.getvalue()) 

else: 

self._reporter.test_pass() 

self._reporter.leaving_filename() 

 

def get_test_files(self, dir, pat='*.py', init_only=True): 

""" 

Returns the list of \*.py files (default) from which docstrings 

will be tested which are at or below directory ``dir``. By default, 

only those that have an __init__.py in their parent directory 

and do not start with ``test_`` will be included. 

""" 

def importable(x): 

""" 

Checks if given pathname x is an importable module by checking for 

__init__.py file. 

 

Returns True/False. 

 

Currently we only test if the __init__.py file exists in the 

directory with the file "x" (in theory we should also test all the 

parent dirs). 

""" 

init_py = os.path.join(os.path.dirname(x), "__init__.py") 

return os.path.exists(init_py) 

 

dir = os.path.join(self._root_dir, convert_to_native_paths([dir])[0]) 

 

g = [] 

for path, folders, files in os.walk(dir): 

g.extend([os.path.join(path, f) for f in files 

if not f.startswith('test_') and fnmatch(f, pat)]) 

if init_only: 

# skip files that are not importable (i.e. missing __init__.py) 

g = [x for x in g if importable(x)] 

 

return [sys_normcase(gi) for gi in g] 

 

def _process_dependencies(self, deps): 

""" 

Returns ``False`` if some dependencies are not met and the test should be 

skipped otherwise returns ``True``. 

""" 

executables = deps.get('exe', None) 

moduledeps = deps.get('modules', None) 

viewers = deps.get('disable_viewers', None) 

pyglet = deps.get('pyglet', None) 

 

# print deps 

 

if executables is not None: 

for ex in executables: 

found = find_executable(ex) 

if found is None: 

return "Could not find %s" % ex 

if moduledeps is not None: 

for extmod in moduledeps: 

if extmod == 'matplotlib': 

matplotlib = import_module( 

'matplotlib', 

__import__kwargs={'fromlist': 

['pyplot', 'cm', 'collections']}, 

min_module_version='1.0.0', catch=(RuntimeError,)) 

if matplotlib is not None: 

pass 

else: 

return "Could not import matplotlib" 

else: 

# TODO min version support 

mod = import_module(extmod) 

if mod is not None: 

version = "unknown" 

if hasattr(mod, '__version__'): 

version = mod.__version__ 

else: 

return "Could not import %s" % mod 

if viewers is not None: 

import tempfile 

tempdir = tempfile.mkdtemp() 

os.environ['PATH'] = '%s:%s' % (tempdir, os.environ['PATH']) 

 

if PY3: 

vw = '#!/usr/bin/env python3\n' \ 

'import sys\n' \ 

'if len(sys.argv) <= 1:\n' \ 

' exit("wrong number of args")\n' 

else: 

vw = '#!/usr/bin/env python\n' \ 

'import sys\n' \ 

'if len(sys.argv) <= 1:\n' \ 

' exit("wrong number of args")\n' 

 

for viewer in viewers: 

with open(os.path.join(tempdir, viewer), 'w') as fh: 

fh.write(vw) 

 

# make the file executable 

os.chmod(os.path.join(tempdir, viewer), 

stat.S_IREAD | stat.S_IWRITE | stat.S_IXUSR) 

if pyglet: 

# monkey-patch pyglet s.t. it does not open a window during 

# doctesting 

import pyglet 

class DummyWindow(object): 

def __init__(self, *args, **kwargs): 

self.has_exit=True 

self.width = 600 

self.height = 400 

 

def set_vsync(self, x): 

pass 

 

def switch_to(self): 

pass 

 

def push_handlers(self, x): 

pass 

 

def close(self): 

pass 

 

pyglet.window.Window = DummyWindow 

 

return True 

 

class SymPyDocTestFinder(DocTestFinder): 

""" 

A class used to extract the DocTests that are relevant to a given 

object, from its docstring and the docstrings of its contained 

objects. Doctests can currently be extracted from the following 

object types: modules, functions, classes, methods, staticmethods, 

classmethods, and properties. 

 

Modified from doctest's version by looking harder for code in the 

case that it looks like the the code comes from a different module. 

In the case of decorated functions (e.g. @vectorize) they appear 

to come from a different module (e.g. multidemensional) even though 

their code is not there. 

""" 

 

def _find(self, tests, obj, name, module, source_lines, globs, seen): 

""" 

Find tests for the given object and any contained objects, and 

add them to ``tests``. 

""" 

if self._verbose: 

print('Finding tests in %s' % name) 

 

# If we've already processed this object, then ignore it. 

if id(obj) in seen: 

return 

seen[id(obj)] = 1 

 

# Make sure we don't run doctests for classes outside of sympy, such 

# as in numpy or scipy. 

if inspect.isclass(obj): 

if obj.__module__.split('.')[0] != 'sympy': 

return 

 

# Find a test for this object, and add it to the list of tests. 

test = self._get_test(obj, name, module, globs, source_lines) 

if test is not None: 

tests.append(test) 

 

if not self._recurse: 

return 

 

# Look for tests in a module's contained objects. 

if inspect.ismodule(obj): 

for rawname, val in obj.__dict__.items(): 

# Recurse to functions & classes. 

if inspect.isfunction(val) or inspect.isclass(val): 

# Make sure we don't run doctests functions or classes 

# from different modules 

if val.__module__ != module.__name__: 

continue 

 

assert self._from_module(module, val), \ 

"%s is not in module %s (rawname %s)" % (val, module, rawname) 

 

try: 

valname = '%s.%s' % (name, rawname) 

self._find(tests, val, valname, module, 

source_lines, globs, seen) 

except KeyboardInterrupt: 

raise 

 

# Look for tests in a module's __test__ dictionary. 

for valname, val in getattr(obj, '__test__', {}).items(): 

if not isinstance(valname, string_types): 

raise ValueError("SymPyDocTestFinder.find: __test__ keys " 

"must be strings: %r" % 

(type(valname),)) 

if not (inspect.isfunction(val) or inspect.isclass(val) or 

inspect.ismethod(val) or inspect.ismodule(val) or 

isinstance(val, string_types)): 

raise ValueError("SymPyDocTestFinder.find: __test__ values " 

"must be strings, functions, methods, " 

"classes, or modules: %r" % 

(type(val),)) 

valname = '%s.__test__.%s' % (name, valname) 

self._find(tests, val, valname, module, source_lines, 

globs, seen) 

 

# Look for tests in a class's contained objects. 

if inspect.isclass(obj): 

for valname, val in obj.__dict__.items(): 

# Special handling for staticmethod/classmethod. 

if isinstance(val, staticmethod): 

val = getattr(obj, valname) 

if isinstance(val, classmethod): 

val = getattr(obj, valname).__func__ 

 

# Recurse to methods, properties, and nested classes. 

if (inspect.isfunction(val) or 

inspect.isclass(val) or 

isinstance(val, property)): 

# Make sure we don't run doctests functions or classes 

# from different modules 

if isinstance(val, property): 

if hasattr(val.fget, '__module__'): 

if val.fget.__module__ != module.__name__: 

continue 

else: 

if val.__module__ != module.__name__: 

continue 

 

assert self._from_module(module, val), \ 

"%s is not in module %s (valname %s)" % ( 

val, module, valname) 

 

valname = '%s.%s' % (name, valname) 

self._find(tests, val, valname, module, source_lines, 

globs, seen) 

 

def _get_test(self, obj, name, module, globs, source_lines): 

""" 

Return a DocTest for the given object, if it defines a docstring; 

otherwise, return None. 

""" 

 

lineno = None 

 

# Extract the object's docstring. If it doesn't have one, 

# then return None (no test for this object). 

if isinstance(obj, string_types): 

# obj is a string in the case for objects in the polys package. 

# Note that source_lines is a binary string (compiled polys 

# modules), which can't be handled by _find_lineno so determine 

# the line number here. 

 

docstring = obj 

 

matches = re.findall("line \d+", name) 

assert len(matches) == 1, \ 

"string '%s' does not contain lineno " % name 

 

# NOTE: this is not the exact linenumber but its better than no 

# lineno ;) 

lineno = int(matches[0][5:]) 

 

else: 

try: 

if obj.__doc__ is None: 

docstring = '' 

else: 

docstring = obj.__doc__ 

if not isinstance(docstring, string_types): 

docstring = str(docstring) 

except (TypeError, AttributeError): 

docstring = '' 

 

# Don't bother if the docstring is empty. 

if self._exclude_empty and not docstring: 

return None 

 

# check that properties have a docstring because _find_lineno 

# assumes it 

if isinstance(obj, property): 

if obj.fget.__doc__ is None: 

return None 

 

# Find the docstring's location in the file. 

if lineno is None: 

# handling of properties is not implemented in _find_lineno so do 

# it here 

if hasattr(obj, 'func_closure') and obj.func_closure is not None: 

tobj = obj.func_closure[0].cell_contents 

elif isinstance(obj, property): 

tobj = obj.fget 

else: 

tobj = obj 

lineno = self._find_lineno(tobj, source_lines) 

 

if lineno is None: 

return None 

 

# Return a DocTest for this object. 

if module is None: 

filename = None 

else: 

filename = getattr(module, '__file__', module.__name__) 

if filename[-4:] in (".pyc", ".pyo"): 

filename = filename[:-1] 

 

if hasattr(obj, '_doctest_depends_on'): 

globs['_doctest_depends_on'] = obj._doctest_depends_on 

else: 

globs['_doctest_depends_on'] = {} 

 

return self._parser.get_doctest(docstring, globs, name, 

filename, lineno) 

 

 

class SymPyDocTestRunner(DocTestRunner): 

""" 

A class used to run DocTest test cases, and accumulate statistics. 

The ``run`` method is used to process a single DocTest case. It 

returns a tuple ``(f, t)``, where ``t`` is the number of test cases 

tried, and ``f`` is the number of test cases that failed. 

 

Modified from the doctest version to not reset the sys.displayhook (see 

issue 5140). 

 

See the docstring of the original DocTestRunner for more information. 

""" 

 

def run(self, test, compileflags=None, out=None, clear_globs=True): 

""" 

Run the examples in ``test``, and display the results using the 

writer function ``out``. 

 

The examples are run in the namespace ``test.globs``. If 

``clear_globs`` is true (the default), then this namespace will 

be cleared after the test runs, to help with garbage 

collection. If you would like to examine the namespace after 

the test completes, then use ``clear_globs=False``. 

 

``compileflags`` gives the set of flags that should be used by 

the Python compiler when running the examples. If not 

specified, then it will default to the set of future-import 

flags that apply to ``globs``. 

 

The output of each example is checked using 

``SymPyDocTestRunner.check_output``, and the results are 

formatted by the ``SymPyDocTestRunner.report_*`` methods. 

""" 

self.test = test 

 

if compileflags is None: 

compileflags = pdoctest._extract_future_flags(test.globs) 

 

save_stdout = sys.stdout 

if out is None: 

out = save_stdout.write 

sys.stdout = self._fakeout 

 

# Patch pdb.set_trace to restore sys.stdout during interactive 

# debugging (so it's not still redirected to self._fakeout). 

# Note that the interactive output will go to *our* 

# save_stdout, even if that's not the real sys.stdout; this 

# allows us to write test cases for the set_trace behavior. 

save_set_trace = pdb.set_trace 

self.debugger = pdoctest._OutputRedirectingPdb(save_stdout) 

self.debugger.reset() 

pdb.set_trace = self.debugger.set_trace 

 

# Patch linecache.getlines, so we can see the example's source 

# when we're inside the debugger. 

self.save_linecache_getlines = pdoctest.linecache.getlines 

linecache.getlines = self.__patched_linecache_getlines 

 

try: 

test.globs['print_function'] = print_function 

return self.__run(test, compileflags, out) 

finally: 

sys.stdout = save_stdout 

pdb.set_trace = save_set_trace 

linecache.getlines = self.save_linecache_getlines 

if clear_globs: 

test.globs.clear() 

 

# We have to override the name mangled methods. 

SymPyDocTestRunner._SymPyDocTestRunner__patched_linecache_getlines = \ 

DocTestRunner._DocTestRunner__patched_linecache_getlines 

SymPyDocTestRunner._SymPyDocTestRunner__run = DocTestRunner._DocTestRunner__run 

SymPyDocTestRunner._SymPyDocTestRunner__record_outcome = \ 

DocTestRunner._DocTestRunner__record_outcome 

 

 

class SymPyOutputChecker(pdoctest.OutputChecker): 

""" 

Compared to the OutputChecker from the stdlib our OutputChecker class 

supports numerical comparison of floats occuring in the output of the 

doctest examples 

""" 

 

def __init__(self): 

# NOTE OutputChecker is an old-style class with no __init__ method, 

# so we can't call the base class version of __init__ here 

 

got_floats = r'(\d+\.\d*|\.\d+)' 

 

# floats in the 'want' string may contain ellipses 

want_floats = got_floats + r'(\.{3})?' 

 

front_sep = r'\s|\+|\-|\*|,' 

back_sep = front_sep + r'|j|e' 

 

fbeg = r'^%s(?=%s|$)' % (got_floats, back_sep) 

fmidend = r'(?<=%s)%s(?=%s|$)' % (front_sep, got_floats, back_sep) 

self.num_got_rgx = re.compile(r'(%s|%s)' %(fbeg, fmidend)) 

 

fbeg = r'^%s(?=%s|$)' % (want_floats, back_sep) 

fmidend = r'(?<=%s)%s(?=%s|$)' % (front_sep, want_floats, back_sep) 

self.num_want_rgx = re.compile(r'(%s|%s)' %(fbeg, fmidend)) 

 

def check_output(self, want, got, optionflags): 

""" 

Return True iff the actual output from an example (`got`) 

matches the expected output (`want`). These strings are 

always considered to match if they are identical; but 

depending on what option flags the test runner is using, 

several non-exact match types are also possible. See the 

documentation for `TestRunner` for more information about 

option flags. 

""" 

# Handle the common case first, for efficiency: 

# if they're string-identical, always return true. 

if got == want: 

return True 

 

# TODO parse integers as well ? 

# Parse floats and compare them. If some of the parsed floats contain 

# ellipses, skip the comparison. 

matches = self.num_got_rgx.finditer(got) 

numbers_got = [match.group(1) for match in matches] # list of strs 

matches = self.num_want_rgx.finditer(want) 

numbers_want = [match.group(1) for match in matches] # list of strs 

if len(numbers_got) != len(numbers_want): 

return False 

 

if len(numbers_got) > 0: 

nw_ = [] 

for ng, nw in zip(numbers_got, numbers_want): 

if '...' in nw: 

nw_.append(ng) 

continue 

else: 

nw_.append(nw) 

 

if abs(float(ng)-float(nw)) > 1e-5: 

return False 

 

got = self.num_got_rgx.sub(r'%s', got) 

got = got % tuple(nw_) 

 

# <BLANKLINE> can be used as a special sequence to signify a 

# blank line, unless the DONT_ACCEPT_BLANKLINE flag is used. 

if not (optionflags & pdoctest.DONT_ACCEPT_BLANKLINE): 

# Replace <BLANKLINE> in want with a blank line. 

want = re.sub('(?m)^%s\s*?$' % re.escape(pdoctest.BLANKLINE_MARKER), 

'', want) 

# If a line in got contains only spaces, then remove the 

# spaces. 

got = re.sub('(?m)^\s*?$', '', got) 

if got == want: 

return True 

 

# This flag causes doctest to ignore any differences in the 

# contents of whitespace strings. Note that this can be used 

# in conjunction with the ELLIPSIS flag. 

if optionflags & pdoctest.NORMALIZE_WHITESPACE: 

got = ' '.join(got.split()) 

want = ' '.join(want.split()) 

if got == want: 

return True 

 

# The ELLIPSIS flag says to let the sequence "..." in `want` 

# match any substring in `got`. 

if optionflags & pdoctest.ELLIPSIS: 

if pdoctest._ellipsis_match(want, got): 

return True 

 

# We didn't find any match; return false. 

return False 

 

 

class Reporter(object): 

""" 

Parent class for all reporters. 

""" 

pass 

 

 

class PyTestReporter(Reporter): 

""" 

Py.test like reporter. Should produce output identical to py.test. 

""" 

 

def __init__(self, verbose=False, tb="short", colors=True, 

force_colors=False, split=None): 

self._verbose = verbose 

self._tb_style = tb 

self._colors = colors 

self._force_colors = force_colors 

self._xfailed = 0 

self._xpassed = [] 

self._failed = [] 

self._failed_doctest = [] 

self._passed = 0 

self._skipped = 0 

self._exceptions = [] 

self._terminal_width = None 

self._default_width = 80 

self._split = split 

 

# TODO: Should these be protected? 

self.slow_test_functions = [] 

self.fast_test_functions = [] 

 

# this tracks the x-position of the cursor (useful for positioning 

# things on the screen), without the need for any readline library: 

self._write_pos = 0 

self._line_wrap = False 

 

def root_dir(self, dir): 

self._root_dir = dir 

 

@property 

def terminal_width(self): 

if self._terminal_width is not None: 

return self._terminal_width 

 

def findout_terminal_width(): 

if sys.platform == "win32": 

# Windows support is based on: 

# 

# http://code.activestate.com/recipes/ 

# 440694-determine-size-of-console-window-on-windows/ 

 

from ctypes import windll, create_string_buffer 

 

h = windll.kernel32.GetStdHandle(-12) 

csbi = create_string_buffer(22) 

res = windll.kernel32.GetConsoleScreenBufferInfo(h, csbi) 

 

if res: 

import struct 

(_, _, _, _, _, left, _, right, _, _, _) = \ 

struct.unpack("hhhhHhhhhhh", csbi.raw) 

return right - left 

else: 

return self._default_width 

 

if hasattr(sys.stdout, 'isatty') and not sys.stdout.isatty(): 

return self._default_width # leave PIPEs alone 

 

try: 

process = subprocess.Popen(['stty', '-a'], 

stdout=subprocess.PIPE, 

stderr=subprocess.PIPE) 

stdout = process.stdout.read() 

if PY3: 

stdout = stdout.decode("utf-8") 

except (OSError, IOError): 

pass 

else: 

# We support the following output formats from stty: 

# 

# 1) Linux -> columns 80 

# 2) OS X -> 80 columns 

# 3) Solaris -> columns = 80 

 

re_linux = r"columns\s+(?P<columns>\d+);" 

re_osx = r"(?P<columns>\d+)\s*columns;" 

re_solaris = r"columns\s+=\s+(?P<columns>\d+);" 

 

for regex in (re_linux, re_osx, re_solaris): 

match = re.search(regex, stdout) 

 

if match is not None: 

columns = match.group('columns') 

 

try: 

width = int(columns) 

except ValueError: 

pass 

if width != 0: 

return width 

 

return self._default_width 

 

width = findout_terminal_width() 

self._terminal_width = width 

 

return width 

 

def write(self, text, color="", align="left", width=None, 

force_colors=False): 

""" 

Prints a text on the screen. 

 

It uses sys.stdout.write(), so no readline library is necessary. 

 

Parameters 

========== 

 

color : choose from the colors below, "" means default color 

align : "left"/"right", "left" is a normal print, "right" is aligned on 

the right-hand side of the screen, filled with spaces if 

necessary 

width : the screen width 

 

""" 

color_templates = ( 

("Black", "0;30"), 

("Red", "0;31"), 

("Green", "0;32"), 

("Brown", "0;33"), 

("Blue", "0;34"), 

("Purple", "0;35"), 

("Cyan", "0;36"), 

("LightGray", "0;37"), 

("DarkGray", "1;30"), 

("LightRed", "1;31"), 

("LightGreen", "1;32"), 

("Yellow", "1;33"), 

("LightBlue", "1;34"), 

("LightPurple", "1;35"), 

("LightCyan", "1;36"), 

("White", "1;37"), 

) 

 

colors = {} 

 

for name, value in color_templates: 

colors[name] = value 

c_normal = '\033[0m' 

c_color = '\033[%sm' 

 

if width is None: 

width = self.terminal_width 

 

if align == "right": 

if self._write_pos + len(text) > width: 

# we don't fit on the current line, create a new line 

self.write("\n") 

self.write(" "*(width - self._write_pos - len(text))) 

 

if not self._force_colors and hasattr(sys.stdout, 'isatty') and not \ 

sys.stdout.isatty(): 

# the stdout is not a terminal, this for example happens if the 

# output is piped to less, e.g. "bin/test | less". In this case, 

# the terminal control sequences would be printed verbatim, so 

# don't use any colors. 

color = "" 

elif sys.platform == "win32": 

# Windows consoles don't support ANSI escape sequences 

color = "" 

elif not self._colors: 

color = "" 

 

if self._line_wrap: 

if text[0] != "\n": 

sys.stdout.write("\n") 

 

# Avoid UnicodeEncodeError when printing out test failures 

if PY3 and IS_WINDOWS: 

text = text.encode('raw_unicode_escape').decode('utf8', 'ignore') 

elif PY3 and not sys.stdout.encoding.lower().startswith('utf'): 

text = text.encode(sys.stdout.encoding, 'backslashreplace' 

).decode(sys.stdout.encoding) 

 

if color == "": 

sys.stdout.write(text) 

else: 

sys.stdout.write("%s%s%s" % 

(c_color % colors[color], text, c_normal)) 

sys.stdout.flush() 

l = text.rfind("\n") 

if l == -1: 

self._write_pos += len(text) 

else: 

self._write_pos = len(text) - l - 1 

self._line_wrap = self._write_pos >= width 

self._write_pos %= width 

 

def write_center(self, text, delim="="): 

width = self.terminal_width 

if text != "": 

text = " %s " % text 

idx = (width - len(text)) // 2 

t = delim*idx + text + delim*(width - idx - len(text)) 

self.write(t + "\n") 

 

def write_exception(self, e, val, tb): 

t = traceback.extract_tb(tb) 

# remove the first item, as that is always runtests.py 

t = t[1:] 

t = traceback.format_list(t) 

self.write("".join(t)) 

t = traceback.format_exception_only(e, val) 

self.write("".join(t)) 

 

def start(self, seed=None, msg="test process starts"): 

self.write_center(msg) 

executable = sys.executable 

v = tuple(sys.version_info) 

python_version = "%s.%s.%s-%s-%s" % v 

implementation = platform.python_implementation() 

if implementation == 'PyPy': 

implementation += " %s.%s.%s-%s-%s" % sys.pypy_version_info 

self.write("executable: %s (%s) [%s]\n" % 

(executable, python_version, implementation)) 

from .misc import ARCH 

self.write("architecture: %s\n" % ARCH) 

from sympy.core.cache import USE_CACHE 

self.write("cache: %s\n" % USE_CACHE) 

from sympy.core.compatibility import GROUND_TYPES, HAS_GMPY 

version = '' 

if GROUND_TYPES =='gmpy': 

if HAS_GMPY == 1: 

import gmpy 

elif HAS_GMPY == 2: 

import gmpy2 as gmpy 

version = gmpy.version() 

self.write("ground types: %s %s\n" % (GROUND_TYPES, version)) 

if seed is not None: 

self.write("random seed: %d\n" % seed) 

from .misc import HASH_RANDOMIZATION 

self.write("hash randomization: ") 

hash_seed = os.getenv("PYTHONHASHSEED") or '0' 

if HASH_RANDOMIZATION and (hash_seed == "random" or int(hash_seed)): 

self.write("on (PYTHONHASHSEED=%s)\n" % hash_seed) 

else: 

self.write("off\n") 

if self._split: 

self.write("split: %s\n" % self._split) 

self.write('\n') 

self._t_start = clock() 

 

def finish(self): 

self._t_end = clock() 

self.write("\n") 

global text, linelen 

text = "tests finished: %d passed, " % self._passed 

linelen = len(text) 

 

def add_text(mytext): 

global text, linelen 

"""Break new text if too long.""" 

if linelen + len(mytext) > self.terminal_width: 

text += '\n' 

linelen = 0 

text += mytext 

linelen += len(mytext) 

 

if len(self._failed) > 0: 

add_text("%d failed, " % len(self._failed)) 

if len(self._failed_doctest) > 0: 

add_text("%d failed, " % len(self._failed_doctest)) 

if self._skipped > 0: 

add_text("%d skipped, " % self._skipped) 

if self._xfailed > 0: 

add_text("%d expected to fail, " % self._xfailed) 

if len(self._xpassed) > 0: 

add_text("%d expected to fail but passed, " % len(self._xpassed)) 

if len(self._exceptions) > 0: 

add_text("%d exceptions, " % len(self._exceptions)) 

add_text("in %.2f seconds" % (self._t_end - self._t_start)) 

 

if self.slow_test_functions: 

self.write_center('slowest tests', '_') 

sorted_slow = sorted(self.slow_test_functions, key=lambda r: r[1]) 

for slow_func_name, taken in sorted_slow: 

print('%s - Took %.3f seconds' % (slow_func_name, taken)) 

 

if self.fast_test_functions: 

self.write_center('unexpectedly fast tests', '_') 

sorted_fast = sorted(self.fast_test_functions, 

key=lambda r: r[1]) 

for fast_func_name, taken in sorted_fast: 

print('%s - Took %.3f seconds' % (fast_func_name, taken)) 

 

if len(self._xpassed) > 0: 

self.write_center("xpassed tests", "_") 

for e in self._xpassed: 

self.write("%s: %s\n" % (e[0], e[1])) 

self.write("\n") 

 

if self._tb_style != "no" and len(self._exceptions) > 0: 

for e in self._exceptions: 

filename, f, (t, val, tb) = e 

self.write_center("", "_") 

if f is None: 

s = "%s" % filename 

else: 

s = "%s:%s" % (filename, f.__name__) 

self.write_center(s, "_") 

self.write_exception(t, val, tb) 

self.write("\n") 

 

if self._tb_style != "no" and len(self._failed) > 0: 

for e in self._failed: 

filename, f, (t, val, tb) = e 

self.write_center("", "_") 

self.write_center("%s:%s" % (filename, f.__name__), "_") 

self.write_exception(t, val, tb) 

self.write("\n") 

 

if self._tb_style != "no" and len(self._failed_doctest) > 0: 

for e in self._failed_doctest: 

filename, msg = e 

self.write_center("", "_") 

self.write_center("%s" % filename, "_") 

self.write(msg) 

self.write("\n") 

 

self.write_center(text) 

ok = len(self._failed) == 0 and len(self._exceptions) == 0 and \ 

len(self._failed_doctest) == 0 

if not ok: 

self.write("DO *NOT* COMMIT!\n") 

return ok 

 

def entering_filename(self, filename, n): 

rel_name = filename[len(self._root_dir) + 1:] 

self._active_file = rel_name 

self._active_file_error = False 

self.write(rel_name) 

self.write("[%d] " % n) 

 

def leaving_filename(self): 

self.write(" ") 

if self._active_file_error: 

self.write("[FAIL]", "Red", align="right") 

else: 

self.write("[OK]", "Green", align="right") 

self.write("\n") 

if self._verbose: 

self.write("\n") 

 

def entering_test(self, f): 

self._active_f = f 

if self._verbose: 

self.write("\n" + f.__name__ + " ") 

 

def test_xfail(self): 

self._xfailed += 1 

self.write("f", "Green") 

 

def test_xpass(self, v): 

message = str(v) 

self._xpassed.append((self._active_file, message)) 

self.write("X", "Green") 

 

def test_fail(self, exc_info): 

self._failed.append((self._active_file, self._active_f, exc_info)) 

self.write("F", "Red") 

self._active_file_error = True 

 

def doctest_fail(self, name, error_msg): 

# the first line contains "******", remove it: 

error_msg = "\n".join(error_msg.split("\n")[1:]) 

self._failed_doctest.append((name, error_msg)) 

self.write("F", "Red") 

self._active_file_error = True 

 

def test_pass(self, char="."): 

self._passed += 1 

if self._verbose: 

self.write("ok", "Green") 

else: 

self.write(char, "Green") 

 

def test_skip(self, v=None): 

char = "s" 

self._skipped += 1 

if v is not None: 

message = str(v) 

if message == "KeyboardInterrupt": 

char = "K" 

elif message == "Timeout": 

char = "T" 

elif message == "Slow": 

char = "w" 

if self._verbose: 

if v is not None: 

self.write(message + ' ', "Blue") 

else: 

self.write(" - ", "Blue") 

self.write(char, "Blue") 

 

def test_exception(self, exc_info): 

self._exceptions.append((self._active_file, self._active_f, exc_info)) 

self.write("E", "Red") 

self._active_file_error = True 

 

def import_error(self, filename, exc_info): 

self._exceptions.append((filename, None, exc_info)) 

rel_name = filename[len(self._root_dir) + 1:] 

self.write(rel_name) 

self.write("[?] Failed to import", "Red") 

self.write(" ") 

self.write("[FAIL]", "Red", align="right") 

self.write("\n") 

 

sympy_dir = get_sympy_dir()