Lib/test/test_sys.py

   1 # -*- coding: iso-8859-1 -*-
   2 import unittest, test.test_support
   3 import sys, cStringIO, os
   4 import struct
   5
   6 class SysModuleTest(unittest.TestCase):
   7
   8     def test_original_displayhook(self):
   9         import __builtin__
  10         savestdout = sys.stdout
  11         out = cStringIO.StringIO()
  12         sys.stdout = out
  13
  14         dh = sys.__displayhook__
  15
  16         self.assertRaises(TypeError, dh)
  17         if hasattr(__builtin__, "_"):
  18             del __builtin__._
  19
  20         dh(None)
  21         self.assertEqual(out.getvalue(), "")
  22         self.assertTrue(not hasattr(__builtin__, "_"))
  23         dh(42)
  24         self.assertEqual(out.getvalue(), "42\n")
  25         self.assertEqual(__builtin__._, 42)
  26
  27         del sys.stdout
  28         self.assertRaises(RuntimeError, dh, 42)
  29
  30         sys.stdout = savestdout
  31
  32     def test_lost_displayhook(self):
  33         olddisplayhook = sys.displayhook
  34         del sys.displayhook
  35         code = compile("42", "<string>", "single")
  36         self.assertRaises(RuntimeError, eval, code)
  37         sys.displayhook = olddisplayhook
  38
  39     def test_custom_displayhook(self):
  40         olddisplayhook = sys.displayhook
  41         def baddisplayhook(obj):
  42             raise ValueError
  43         sys.displayhook = baddisplayhook
  44         code = compile("42", "<string>", "single")
  45         self.assertRaises(ValueError, eval, code)
  46         sys.displayhook = olddisplayhook
  47
  48     def test_original_excepthook(self):
  49         savestderr = sys.stderr
  50         err = cStringIO.StringIO()
  51         sys.stderr = err
  52
  53         eh = sys.__excepthook__
  54
  55         self.assertRaises(TypeError, eh)
  56         try:
  57             raise ValueError(42)
  58         except ValueError, exc:
  59             eh(*sys.exc_info())
  60
  61         sys.stderr = savestderr
  62         self.assertTrue(err.getvalue().endswith("ValueError: 42\n"))
  63
  64     # FIXME: testing the code for a lost or replaced excepthook in
  65     # Python/pythonrun.c::PyErr_PrintEx() is tricky.
  66
  67     def test_exc_clear(self):
  68         self.assertRaises(TypeError, sys.exc_clear, 42)
  69
  70         # Verify that exc_info is present and matches exc, then clear it, and
  71         # check that it worked.
  72         def clear_check(exc):
  73             typ, value, traceback = sys.exc_info()
  74             self.assertTrue(typ is not None)
  75             self.assertTrue(value is exc)
  76             self.assertTrue(traceback is not None)
  77
  78             sys.exc_clear()
  79
  80             typ, value, traceback = sys.exc_info()
  81             self.assertTrue(typ is None)
  82             self.assertTrue(value is None)
  83             self.assertTrue(traceback is None)
  84
  85         def clear():
  86             try:
  87                 raise ValueError, 42
  88             except ValueError, exc:
  89                 clear_check(exc)
  90
  91         # Raise an exception and check that it can be cleared
  92         clear()
  93
  94         # Verify that a frame currently handling an exception is
  95         # unaffected by calling exc_clear in a nested frame.
  96         try:
  97             raise ValueError, 13
  98         except ValueError, exc:
  99             typ1, value1, traceback1 = sys.exc_info()
 100             clear()
 101             typ2, value2, traceback2 = sys.exc_info()
 102
 103             self.assertTrue(typ1 is typ2)
 104             self.assertTrue(value1 is exc)
 105             self.assertTrue(value1 is value2)
 106             self.assertTrue(traceback1 is traceback2)
 107
 108         # Check that an exception can be cleared outside of an except block
 109         clear_check(exc)
 110
 111     def test_exit(self):
 112         self.assertRaises(TypeError, sys.exit, 42, 42)
 113
 114         # call without argument
 115         try:
 116             sys.exit(0)
 117         except SystemExit, exc:
 118             self.assertEquals(exc.code, 0)
 119         except:
 120             self.fail("wrong exception")
 121         else:
 122             self.fail("no exception")
 123
 124         # call with tuple argument with one entry
 125         # entry will be unpacked
 126         try:
 127             sys.exit(42)
 128         except SystemExit, exc:
 129             self.assertEquals(exc.code, 42)
 130         except:
 131             self.fail("wrong exception")
 132         else:
 133             self.fail("no exception")
 134
 135         # call with integer argument
 136         try:
 137             sys.exit((42,))
 138         except SystemExit, exc:
 139             self.assertEquals(exc.code, 42)
 140         except:
 141             self.fail("wrong exception")
 142         else:
 143             self.fail("no exception")
 144
 145         # call with string argument
 146         try:
 147             sys.exit("exit")
 148         except SystemExit, exc:
 149             self.assertEquals(exc.code, "exit")
 150         except:
 151             self.fail("wrong exception")
 152         else:
 153             self.fail("no exception")
 154
 155         # call with tuple argument with two entries
 156         try:
 157             sys.exit((17, 23))
 158         except SystemExit, exc:
 159             self.assertEquals(exc.code, (17, 23))
 160         except:
 161             self.fail("wrong exception")
 162         else:
 163             self.fail("no exception")
 164
 165         # test that the exit machinery handles SystemExits properly
 166         import subprocess
 167         # both unnormalized...
 168         rc = subprocess.call([sys.executable, "-c",
 169                               "raise SystemExit, 46"])
 170         self.assertEqual(rc, 46)
 171         # ... and normalized
 172         rc = subprocess.call([sys.executable, "-c",
 173                               "raise SystemExit(47)"])
 174         self.assertEqual(rc, 47)
 175
 176
 177     def test_getdefaultencoding(self):
 178         if test.test_support.have_unicode:
 179             self.assertRaises(TypeError, sys.getdefaultencoding, 42)
 180             # can't check more than the type, as the user might have changed it
 181             self.assertTrue(isinstance(sys.getdefaultencoding(), str))
 182
 183     # testing sys.settrace() is done in test_trace.py
 184     # testing sys.setprofile() is done in test_profile.py
 185
 186     def test_setcheckinterval(self):
 187         self.assertRaises(TypeError, sys.setcheckinterval)
 188         orig = sys.getcheckinterval()
 189         for n in 0, 100, 120, orig: # orig last to restore starting state
 190             sys.setcheckinterval(n)
 191             self.assertEquals(sys.getcheckinterval(), n)
 192
 193     def test_recursionlimit(self):
 194         self.assertRaises(TypeError, sys.getrecursionlimit, 42)
 195         oldlimit = sys.getrecursionlimit()
 196         self.assertRaises(TypeError, sys.setrecursionlimit)
 197         self.assertRaises(ValueError, sys.setrecursionlimit, -42)
 198         sys.setrecursionlimit(10000)
 199         self.assertEqual(sys.getrecursionlimit(), 10000)
 200         sys.setrecursionlimit(oldlimit)
 201
 202     def test_getwindowsversion(self):
 203         if hasattr(sys, "getwindowsversion"):
 204             v = sys.getwindowsversion()
 205             self.assertTrue(isinstance(v, tuple))
 206             self.assertEqual(len(v), 5)
 207             self.assertTrue(isinstance(v[0], int))
 208             self.assertTrue(isinstance(v[1], int))
 209             self.assertTrue(isinstance(v[2], int))
 210             self.assertTrue(isinstance(v[3], int))
 211             self.assertTrue(isinstance(v[4], str))
 212
 213     def test_dlopenflags(self):
 214         if hasattr(sys, "setdlopenflags"):
 215             self.assertTrue(hasattr(sys, "getdlopenflags"))
 216             self.assertRaises(TypeError, sys.getdlopenflags, 42)
 217             oldflags = sys.getdlopenflags()
 218             self.assertRaises(TypeError, sys.setdlopenflags)
 219             sys.setdlopenflags(oldflags+1)
 220             self.assertEqual(sys.getdlopenflags(), oldflags+1)
 221             sys.setdlopenflags(oldflags)
 222
 223     def test_refcount(self):
 224         # n here must be a global in order for this test to pass while
 225         # tracing with a python function.  Tracing calls PyFrame_FastToLocals
 226         # which will add a copy of any locals to the frame object, causing
 227         # the reference count to increase by 2 instead of 1.
 228         global n
 229         self.assertRaises(TypeError, sys.getrefcount)
 230         c = sys.getrefcount(None)
 231         n = None
 232         self.assertEqual(sys.getrefcount(None), c+1)
 233         del n
 234         self.assertEqual(sys.getrefcount(None), c)
 235         if hasattr(sys, "gettotalrefcount"):
 236             self.assertTrue(isinstance(sys.gettotalrefcount(), int))
 237
 238     def test_getframe(self):
 239         self.assertRaises(TypeError, sys._getframe, 42, 42)
 240         self.assertRaises(ValueError, sys._getframe, 2000000000)
 241         self.assertTrue(
 242             SysModuleTest.test_getframe.im_func.func_code \
 243             is sys._getframe().f_code
 244         )
 245
 246     # sys._current_frames() is a CPython-only gimmick.
 247     def test_current_frames(self):
 248         have_threads = True
 249         try:
 250             import thread
 251         except ImportError:
 252             have_threads = False
 253
 254         if have_threads:
 255             self.current_frames_with_threads()
 256         else:
 257             self.current_frames_without_threads()
 258
 259     # Test sys._current_frames() in a WITH_THREADS build.
 260     def current_frames_with_threads(self):
 261         import threading, thread
 262         import traceback
 263
 264         # Spawn a thread that blocks at a known place.  Then the main
 265         # thread does sys._current_frames(), and verifies that the frames
 266         # returned make sense.
 267         entered_g = threading.Event()
 268         leave_g = threading.Event()
 269         thread_info = []  # the thread's id
 270
 271         def f123():
 272             g456()
 273
 274         def g456():
 275             thread_info.append(thread.get_ident())
 276             entered_g.set()
 277             leave_g.wait()
 278
 279         t = threading.Thread(target=f123)
 280         t.start()
 281         entered_g.wait()
 282
 283         # At this point, t has finished its entered_g.set(), although it's
 284         # impossible to guess whether it's still on that line or has moved on
 285         # to its leave_g.wait().
 286         self.assertEqual(len(thread_info), 1)
 287         thread_id = thread_info[0]
 288
 289         d = sys._current_frames()
 290
 291         main_id = thread.get_ident()
 292         self.assertTrue(main_id in d)
 293         self.assertTrue(thread_id in d)
 294
 295         # Verify that the captured main-thread frame is _this_ frame.
 296         frame = d.pop(main_id)
 297         self.assertTrue(frame is sys._getframe())
 298
 299         # Verify that the captured thread frame is blocked in g456, called
 300         # from f123.  This is a litte tricky, since various bits of
 301         # threading.py are also in the thread's call stack.
 302         frame = d.pop(thread_id)
 303         stack = traceback.extract_stack(frame)
 304         for i, (filename, lineno, funcname, sourceline) in enumerate(stack):
 305             if funcname == "f123":
 306                 break
 307         else:
 308             self.fail("didn't find f123() on thread's call stack")
 309
 310         self.assertEqual(sourceline, "g456()")
 311
 312         # And the next record must be for g456().
 313         filename, lineno, funcname, sourceline = stack[i+1]
 314         self.assertEqual(funcname, "g456")
 315         self.assertTrue(sourceline in ["leave_g.wait()", "entered_g.set()"])
 316
 317         # Reap the spawned thread.
 318         leave_g.set()
 319         t.join()
 320
 321     # Test sys._current_frames() when thread support doesn't exist.
 322     def current_frames_without_threads(self):
 323         # Not much happens here:  there is only one thread, with artificial
 324         # "thread id" 0.
 325         d = sys._current_frames()
 326         self.assertEqual(len(d), 1)
 327         self.assertTrue(0 in d)
 328         self.assertTrue(d[0] is sys._getframe())
 329
 330     def test_attributes(self):
 331         self.assertTrue(isinstance(sys.api_version, int))
 332         self.assertTrue(isinstance(sys.argv, list))
 333         self.assertTrue(sys.byteorder in ("little", "big"))
 334         self.assertTrue(isinstance(sys.builtin_module_names, tuple))
 335         self.assertTrue(isinstance(sys.copyright, basestring))
 336         self.assertTrue(isinstance(sys.exec_prefix, basestring))
 337         self.assertTrue(isinstance(sys.executable, basestring))
 338         self.assertEqual(len(sys.float_info), 11)
 339         self.assertEqual(sys.float_info.radix, 2)
 340         self.assertEqual(len(sys.long_info), 2)
 341         self.assertTrue(sys.long_info.bits_per_digit % 5 == 0)
 342         self.assertTrue(sys.long_info.sizeof_digit >= 1)
 343         self.assertEqual(type(sys.long_info.bits_per_digit), int)
 344         self.assertEqual(type(sys.long_info.sizeof_digit), int)
 345         self.assertTrue(isinstance(sys.hexversion, int))
 346         self.assertTrue(isinstance(sys.maxint, int))
 347         if test.test_support.have_unicode:
 348             self.assertTrue(isinstance(sys.maxunicode, int))
 349         self.assertTrue(isinstance(sys.platform, basestring))
 350         self.assertTrue(isinstance(sys.prefix, basestring))
 351         self.assertTrue(isinstance(sys.version, basestring))
 352         vi = sys.version_info
 353         self.assertTrue(isinstance(vi[:], tuple))
 354         self.assertEqual(len(vi), 5)
 355         self.assertTrue(isinstance(vi[0], int))
 356         self.assertTrue(isinstance(vi[1], int))
 357         self.assertTrue(isinstance(vi[2], int))
 358         self.assertTrue(vi[3] in ("alpha", "beta", "candidate", "final"))
 359         self.assertTrue(isinstance(vi[4], int))
 360         self.assertTrue(isinstance(vi.major, int))
 361         self.assertTrue(isinstance(vi.minor, int))
 362         self.assertTrue(isinstance(vi.micro, int))
 363         self.assertTrue(vi.releaselevel in
 364                      ("alpha", "beta", "candidate", "final"))
 365         self.assertTrue(isinstance(vi.serial, int))
 366         self.assertEqual(vi[0], vi.major)
 367         self.assertEqual(vi[1], vi.minor)
 368         self.assertEqual(vi[2], vi.micro)
 369         self.assertEqual(vi[3], vi.releaselevel)
 370         self.assertEqual(vi[4], vi.serial)
 371         self.assertTrue(vi > (1,0,0))
 372         self.assertIsInstance(sys.float_repr_style, str)
 373         self.assertTrue(sys.float_repr_style in ('short', 'legacy'))
 374
 375     def test_43581(self):
 376         # Can't use sys.stdout, as this is a cStringIO object when
 377         # the test runs under regrtest.
 378         self.assertTrue(sys.__stdout__.encoding == sys.__stderr__.encoding)
 379
 380     def test_sys_flags(self):
 381         self.assertTrue(sys.flags)
 382         attrs = ("debug", "py3k_warning", "division_warning", "division_new",
 383                  "inspect", "interactive", "optimize", "dont_write_bytecode",
 384                  "no_site", "ignore_environment", "tabcheck", "verbose",
 385                  "unicode", "bytes_warning")
 386         for attr in attrs:
 387             self.assertTrue(hasattr(sys.flags, attr), attr)
 388             self.assertEqual(type(getattr(sys.flags, attr)), int, attr)
 389         self.assertTrue(repr(sys.flags))
 390
 391     def test_clear_type_cache(self):
 392         sys._clear_type_cache()
 393
 394     def test_ioencoding(self):
 395         import subprocess,os
 396         env = dict(os.environ)
 397
 398         # Test character: cent sign, encoded as 0x4A (ASCII J) in CP424,
 399         # not representable in ASCII.
 400
 401         env["PYTHONIOENCODING"] = "cp424"
 402         p = subprocess.Popen([sys.executable, "-c", 'print unichr(0xa2)'],
 403                              stdout = subprocess.PIPE, env=env)
 404         out = p.stdout.read().strip()
 405         self.assertEqual(out, unichr(0xa2).encode("cp424"))
 406
 407         env["PYTHONIOENCODING"] = "ascii:replace"
 408         p = subprocess.Popen([sys.executable, "-c", 'print unichr(0xa2)'],
 409                              stdout = subprocess.PIPE, env=env)
 410         out = p.stdout.read().strip()
 411         self.assertEqual(out, '?')
 412
 413
 414 class SizeofTest(unittest.TestCase):
 415
 416     TPFLAGS_HAVE_GC = 1<<14
 417     TPFLAGS_HEAPTYPE = 1L<<9
 418
 419     def setUp(self):
 420         self.c = len(struct.pack('c', ' '))
 421         self.H = len(struct.pack('H', 0))
 422         self.i = len(struct.pack('i', 0))
 423         self.l = len(struct.pack('l', 0))
 424         self.P = len(struct.pack('P', 0))
 425         # due to missing size_t information from struct, it is assumed that
 426         # sizeof(Py_ssize_t) = sizeof(void*)
 427         self.header = 'PP'
 428         self.vheader = self.header + 'P'
 429         if hasattr(sys, "gettotalrefcount"):
 430             self.header += '2P'
 431             self.vheader += '2P'
 432         self.longdigit = sys.long_info.sizeof_digit
 433         import _testcapi
 434         self.gc_headsize = _testcapi.SIZEOF_PYGC_HEAD
 435         self.file = open(test.test_support.TESTFN, 'wb')
 436
 437     def tearDown(self):
 438         self.file.close()
 439         test.test_support.unlink(test.test_support.TESTFN)
 440
 441     def check_sizeof(self, o, size):
 442         result = sys.getsizeof(o)
 443         if ((type(o) == type) and (o.__flags__ & self.TPFLAGS_HEAPTYPE) or\
 444            ((type(o) != type) and (type(o).__flags__ & self.TPFLAGS_HAVE_GC))):
 445             size += self.gc_headsize
 446         msg = 'wrong size for %s: got %d, expected %d' \
 447                 % (type(o), result, size)
 448         self.assertEqual(result, size, msg)
 449
 450     def calcsize(self, fmt):
 451         """Wrapper around struct.calcsize which enforces the alignment of the
 452         end of a structure to the alignment requirement of pointer.
 453
 454         Note: This wrapper should only be used if a pointer member is included
 455         and no member with a size larger than a pointer exists.
 456         """
 457         return struct.calcsize(fmt + '0P')
 458
 459     def test_gc_head_size(self):
 460         # Check that the gc header size is added to objects tracked by the gc.
 461         h = self.header
 462         size = self.calcsize
 463         gc_header_size = self.gc_headsize
 464         # bool objects are not gc tracked
 465         self.assertEqual(sys.getsizeof(True), size(h + 'l'))
 466         # but lists are
 467         self.assertEqual(sys.getsizeof([]), size(h + 'P PP') + gc_header_size)
 468
 469     def test_default(self):
 470         h = self.header
 471         size = self.calcsize
 472         self.assertEqual(sys.getsizeof(True, -1), size(h + 'l'))
 473
 474     def test_objecttypes(self):
 475         # check all types defined in Objects/
 476         h = self.header
 477         vh = self.vheader
 478         size = self.calcsize
 479         check = self.check_sizeof
 480         # bool
 481         check(True, size(h + 'l'))
 482         # buffer
 483         check(buffer(''), size(h + '2P2Pil'))
 484         # builtin_function_or_method
 485         check(len, size(h + '3P'))
 486         # bytearray
 487         samples = ['', 'u'*100000]
 488         for sample in samples:
 489             x = bytearray(sample)
 490             check(x, size(vh + 'iPP') + x.__alloc__() * self.c)
 491         # bytearray_iterator
 492         check(iter(bytearray()), size(h + 'PP'))
 493         # cell
 494         def get_cell():
 495             x = 42
 496             def inner():
 497                 return x
 498             return inner
 499         check(get_cell().func_closure[0], size(h + 'P'))
 500         # classobj (old-style class)
 501         class class_oldstyle():
 502             def method():
 503                 pass
 504         check(class_oldstyle, size(h + '6P'))
 505         # instance (old-style class)
 506         check(class_oldstyle(), size(h + '3P'))
 507         # instancemethod (old-style class)
 508         check(class_oldstyle().method, size(h + '4P'))
 509         # complex
 510         check(complex(0,1), size(h + '2d'))
 511         # code
 512         check(get_cell().func_code, size(h + '4i8Pi2P'))
 513         # BaseException
 514         check(BaseException(), size(h + '3P'))
 515         # UnicodeEncodeError
 516         check(UnicodeEncodeError("", u"", 0, 0, ""), size(h + '5P2PP'))
 517         # UnicodeDecodeError
 518         check(UnicodeDecodeError("", "", 0, 0, ""), size(h + '5P2PP'))
 519         # UnicodeTranslateError
 520         check(UnicodeTranslateError(u"", 0, 1, ""), size(h + '5P2PP'))
 521         # method_descriptor (descriptor object)
 522         check(str.lower, size(h + '2PP'))
 523         # classmethod_descriptor (descriptor object)
 524         # XXX
 525         # member_descriptor (descriptor object)
 526         import datetime
 527         check(datetime.timedelta.days, size(h + '2PP'))
 528         # getset_descriptor (descriptor object)
 529         import __builtin__
 530         check(__builtin__.file.closed, size(h + '2PP'))
 531         # wrapper_descriptor (descriptor object)
 532         check(int.__add__, size(h + '2P2P'))
 533         # dictproxy
 534         class C(object): pass
 535         check(C.__dict__, size(h + 'P'))
 536         # method-wrapper (descriptor object)
 537         check({}.__iter__, size(h + '2P'))
 538         # dict
 539         check({}, size(h + '3P2P' + 8*'P2P'))
 540         x = {1:1, 2:2, 3:3, 4:4, 5:5, 6:6, 7:7, 8:8}
 541         check(x, size(h + '3P2P' + 8*'P2P') + 16*size('P2P'))
 542         # dictionary-keyiterator
 543         check({}.iterkeys(), size(h + 'P2PPP'))
 544         # dictionary-valueiterator
 545         check({}.itervalues(), size(h + 'P2PPP'))
 546         # dictionary-itemiterator
 547         check({}.iteritems(), size(h + 'P2PPP'))
 548         # ellipses
 549         check(Ellipsis, size(h + ''))
 550         # EncodingMap
 551         import codecs, encodings.iso8859_3
 552         x = codecs.charmap_build(encodings.iso8859_3.decoding_table)
 553         check(x, size(h + '32B2iB'))
 554         # enumerate
 555         check(enumerate([]), size(h + 'l3P'))
 556         # file
 557         check(self.file, size(h + '4P2i4P3i3Pi'))
 558         # float
 559         check(float(0), size(h + 'd'))
 560         # sys.floatinfo
 561         check(sys.float_info, size(vh) + self.P * len(sys.float_info))
 562         # frame
 563         import inspect
 564         CO_MAXBLOCKS = 20
 565         x = inspect.currentframe()
 566         ncells = len(x.f_code.co_cellvars)
 567         nfrees = len(x.f_code.co_freevars)
 568         extras = x.f_code.co_stacksize + x.f_code.co_nlocals +\
 569                  ncells + nfrees - 1
 570         check(x, size(vh + '12P3i' + CO_MAXBLOCKS*'3i' + 'P' + extras*'P'))
 571         # function
 572         def func(): pass
 573         check(func, size(h + '9P'))
 574         class c():
 575             @staticmethod
 576             def foo():
 577                 pass
 578             @classmethod
 579             def bar(cls):
 580                 pass
 581             # staticmethod
 582             check(foo, size(h + 'P'))
 583             # classmethod
 584             check(bar, size(h + 'P'))
 585         # generator
 586         def get_gen(): yield 1
 587         check(get_gen(), size(h + 'Pi2P'))
 588         # integer
 589         check(1, size(h + 'l'))
 590         check(100, size(h + 'l'))
 591         # iterator
 592         check(iter('abc'), size(h + 'lP'))
 593         # callable-iterator
 594         import re
 595         check(re.finditer('',''), size(h + '2P'))
 596         # list
 597         samples = [[], [1,2,3], ['1', '2', '3']]
 598         for sample in samples:
 599             check(sample, size(vh + 'PP') + len(sample)*self.P)
 600         # sortwrapper (list)
 601         # XXX
 602         # cmpwrapper (list)
 603         # XXX
 604         # listiterator (list)
 605         check(iter([]), size(h + 'lP'))
 606         # listreverseiterator (list)
 607         check(reversed([]), size(h + 'lP'))
 608         # long
 609         check(0L, size(vh))
 610         check(1L, size(vh) + self.longdigit)
 611         check(-1L, size(vh) + self.longdigit)
 612         PyLong_BASE = 2**sys.long_info.bits_per_digit
 613         check(long(PyLong_BASE), size(vh) + 2*self.longdigit)
 614         check(long(PyLong_BASE**2-1), size(vh) + 2*self.longdigit)
 615         check(long(PyLong_BASE**2), size(vh) + 3*self.longdigit)
 616         # module
 617         check(unittest, size(h + 'P'))
 618         # None
 619         check(None, size(h + ''))
 620         # object
 621         check(object(), size(h + ''))
 622         # property (descriptor object)
 623         class C(object):
 624             def getx(self): return self.__x
 625             def setx(self, value): self.__x = value
 626             def delx(self): del self.__x
 627             x = property(getx, setx, delx, "")
 628             check(x, size(h + '4Pi'))
 629         # PyCObject
 630         # XXX
 631         # rangeiterator
 632         check(iter(xrange(1)), size(h + '4l'))
 633         # reverse
 634         check(reversed(''), size(h + 'PP'))
 635         # set
 636         # frozenset
 637         PySet_MINSIZE = 8
 638         samples = [[], range(10), range(50)]
 639         s = size(h + '3P2P' + PySet_MINSIZE*'lP' + 'lP')
 640         for sample in samples:
 641             minused = len(sample)
 642             if minused == 0: tmp = 1
 643             # the computation of minused is actually a bit more complicated
 644             # but this suffices for the sizeof test
 645             minused = minused*2
 646             newsize = PySet_MINSIZE
 647             while newsize <= minused:
 648                 newsize = newsize << 1
 649             if newsize <= 8:
 650                 check(set(sample), s)
 651                 check(frozenset(sample), s)
 652             else:
 653                 check(set(sample), s + newsize*struct.calcsize('lP'))
 654                 check(frozenset(sample), s + newsize*struct.calcsize('lP'))
 655         # setiterator
 656         check(iter(set()), size(h + 'P3P'))
 657         # slice
 658         check(slice(1), size(h + '3P'))
 659         # str
 660         check('', struct.calcsize(vh + 'li') + 1)
 661         check('abc', struct.calcsize(vh + 'li') + 1 + 3*self.c)
 662         # super
 663         check(super(int), size(h + '3P'))
 664         # tuple
 665         check((), size(vh))
 666         check((1,2,3), size(vh) + 3*self.P)
 667         # tupleiterator
 668         check(iter(()), size(h + 'lP'))
 669         # type
 670         # (PyTypeObject + PyNumberMethods +  PyMappingMethods +
 671         #  PySequenceMethods + PyBufferProcs)
 672         s = size(vh + 'P2P15Pl4PP9PP11PI') + size('41P 10P 3P 6P')
 673         class newstyleclass(object):
 674             pass
 675         check(newstyleclass, s)
 676         # builtin type
 677         check(int, s)
 678         # NotImplementedType
 679         import types
 680         check(types.NotImplementedType, s)
 681         # unicode
 682         usize = len(u'\0'.encode('unicode-internal'))
 683         samples = [u'', u'1'*100]
 684         # we need to test for both sizes, because we don't know if the string
 685         # has been cached
 686         for s in samples:
 687             check(s, size(h + 'PPlP') + usize * (len(s) + 1))
 688         # weakref
 689         import weakref
 690         check(weakref.ref(int), size(h + '2Pl2P'))
 691         # weakproxy
 692         # XXX
 693         # weakcallableproxy
 694         check(weakref.proxy(int), size(h + '2Pl2P'))
 695         # xrange
 696         check(xrange(1), size(h + '3l'))
 697         check(xrange(66000), size(h + '3l'))
 698
 699     def test_pythontypes(self):
 700         # check all types defined in Python/
 701         h = self.header
 702         vh = self.vheader
 703         size = self.calcsize
 704         check = self.check_sizeof
 705         # _ast.AST
 706         import _ast
 707         check(_ast.AST(), size(h + ''))
 708         # imp.NullImporter
 709         import imp
 710         check(imp.NullImporter(self.file.name), size(h + ''))
 711         try:
 712             raise TypeError
 713         except TypeError:
 714             tb = sys.exc_info()[2]
 715             # traceback
 716             if tb != None:
 717                 check(tb, size(h + '2P2i'))
 718         # symtable entry
 719         # XXX
 720         # sys.flags
 721         check(sys.flags, size(vh) + self.P * len(sys.flags))
 722
 723
 724 def test_main():
 725     test_classes = (SysModuleTest, SizeofTest)
 726
 727     test.test_support.run_unittest(*test_classes)
 728
 729 if __name__ == "__main__":
 730     test_main()