1 # -*- coding: iso-8859-1 -*- 2 import unittest, test.test_support 3 from test.script_helper import assert_python_ok, assert_python_failure 4 import cStringIO 5 import gc 6 import operator 7 import os 8 import struct 9 import sys 10 11 class SysModuleTest(unittest.TestCase): 12 13 def tearDown(self): 14 test.test_support.reap_children() 15 16 def test_original_displayhook(self): 17 import __builtin__ 18 savestdout = sys.stdout 19 out = cStringIO.StringIO() 20 sys.stdout = out 21 22 dh = sys.__displayhook__ 23 24 self.assertRaises(TypeError, dh) 25 if hasattr(__builtin__, "_"): 26 del __builtin__._ 27 28 dh(None) 29 self.assertEqual(out.getvalue(), "") 30 self.assertTrue(not hasattr(__builtin__, "_")) 31 dh(42) 32 self.assertEqual(out.getvalue(), "42\n") 33 self.assertEqual(__builtin__._, 42) 34 35 del sys.stdout 36 self.assertRaises(RuntimeError, dh, 42) 37 38 sys.stdout = savestdout 39 40 def test_lost_displayhook(self): 41 olddisplayhook = sys.displayhook 42 del sys.displayhook 43 code = compile("42", "<string>", "single") 44 self.assertRaises(RuntimeError, eval, code) 45 sys.displayhook = olddisplayhook 46 47 def test_custom_displayhook(self): 48 olddisplayhook = sys.displayhook 49 def baddisplayhook(obj): 50 raise ValueError 51 sys.displayhook = baddisplayhook 52 code = compile("42", "<string>", "single") 53 self.assertRaises(ValueError, eval, code) 54 sys.displayhook = olddisplayhook 55 56 def test_original_excepthook(self): 57 savestderr = sys.stderr 58 err = cStringIO.StringIO() 59 sys.stderr = err 60 61 eh = sys.__excepthook__ 62 63 self.assertRaises(TypeError, eh) 64 try: 65 raise ValueError(42) 66 except ValueError, exc: 67 eh(*sys.exc_info()) 68 69 sys.stderr = savestderr 70 self.assertTrue(err.getvalue().endswith("ValueError: 42\n")) 71 72 # FIXME: testing the code for a lost or replaced excepthook in 73 # Python/pythonrun.c::PyErr_PrintEx() is tricky. 74 75 def test_exc_clear(self): 76 self.assertRaises(TypeError, sys.exc_clear, 42) 77 78 # Verify that exc_info is present and matches exc, then clear it, and 79 # check that it worked. 80 def clear_check(exc): 81 typ, value, traceback = sys.exc_info() 82 self.assertTrue(typ is not None) 83 self.assertTrue(value is exc) 84 self.assertTrue(traceback is not None) 85 86 with test.test_support.check_py3k_warnings(): 87 sys.exc_clear() 88 89 typ, value, traceback = sys.exc_info() 90 self.assertTrue(typ is None) 91 self.assertTrue(value is None) 92 self.assertTrue(traceback is None) 93 94 def clear(): 95 try: 96 raise ValueError, 42 97 except ValueError, exc: 98 clear_check(exc) 99 100 # Raise an exception and check that it can be cleared 101 clear() 102 103 # Verify that a frame currently handling an exception is 104 # unaffected by calling exc_clear in a nested frame. 105 try: 106 raise ValueError, 13 107 except ValueError, exc: 108 typ1, value1, traceback1 = sys.exc_info() 109 clear() 110 typ2, value2, traceback2 = sys.exc_info() 111 112 self.assertTrue(typ1 is typ2) 113 self.assertTrue(value1 is exc) 114 self.assertTrue(value1 is value2) 115 self.assertTrue(traceback1 is traceback2) 116 117 # Check that an exception can be cleared outside of an except block 118 clear_check(exc) 119 120 def test_exit(self): 121 # call with two arguments 122 self.assertRaises(TypeError, sys.exit, 42, 42) 123 124 # call without argument 125 with self.assertRaises(SystemExit) as cm: 126 sys.exit() 127 self.assertIsNone(cm.exception.code) 128 129 rc, out, err = assert_python_ok('-c', 'import sys; sys.exit()') 130 self.assertEqual(rc, 0) 131 self.assertEqual(out, b'') 132 self.assertEqual(err, b'') 133 134 # call with integer argument 135 with self.assertRaises(SystemExit) as cm: 136 sys.exit(42) 137 self.assertEqual(cm.exception.code, 42) 138 139 # call with tuple argument with one entry 140 # entry will be unpacked 141 with self.assertRaises(SystemExit) as cm: 142 sys.exit((42,)) 143 self.assertEqual(cm.exception.code, 42) 144 145 # call with string argument 146 with self.assertRaises(SystemExit) as cm: 147 sys.exit("exit") 148 self.assertEqual(cm.exception.code, "exit") 149 150 # call with tuple argument with two entries 151 with self.assertRaises(SystemExit) as cm: 152 sys.exit((17, 23)) 153 self.assertEqual(cm.exception.code, (17, 23)) 154 155 # test that the exit machinery handles SystemExits properly 156 # both unnormalized... 157 rc, out, err = assert_python_failure('-c', 'raise SystemExit, 46') 158 self.assertEqual(rc, 46) 159 self.assertEqual(out, b'') 160 self.assertEqual(err, b'') 161 # ... and normalized 162 rc, out, err = assert_python_failure('-c', 'raise SystemExit(47)') 163 self.assertEqual(rc, 47) 164 self.assertEqual(out, b'') 165 self.assertEqual(err, b'') 166 167 def check_exit_message(code, expected, **env_vars): 168 rc, out, err = assert_python_failure('-c', code, **env_vars) 169 self.assertEqual(rc, 1) 170 self.assertEqual(out, b'') 171 self.assertTrue(err.startswith(expected), 172 "%s doesn't start with %s" % (repr(err), repr(expected))) 173 174 # test that stderr buffer is flushed before the exit message is written 175 # into stderr 176 check_exit_message( 177 r'import sys; sys.stderr.write("unflushed,"); sys.exit("message")', 178 b"unflushed,message") 179 180 # test that the unicode message is encoded to the stderr encoding 181 check_exit_message( 182 r'import sys; sys.exit(u"h\xe9")', 183 b"h\xe9", PYTHONIOENCODING='latin-1') 184 185 def test_getdefaultencoding(self): 186 if test.test_support.have_unicode: 187 self.assertRaises(TypeError, sys.getdefaultencoding, 42) 188 # can't check more than the type, as the user might have changed it 189 self.assertIsInstance(sys.getdefaultencoding(), str) 190 191 # testing sys.settrace() is done in test_sys_settrace.py 192 # testing sys.setprofile() is done in test_sys_setprofile.py 193 194 def test_setcheckinterval(self): 195 self.assertRaises(TypeError, sys.setcheckinterval) 196 orig = sys.getcheckinterval() 197 for n in 0, 100, 120, orig: # orig last to restore starting state 198 sys.setcheckinterval(n) 199 self.assertEqual(sys.getcheckinterval(), n) 200 201 def test_recursionlimit(self): 202 self.assertRaises(TypeError, sys.getrecursionlimit, 42) 203 oldlimit = sys.getrecursionlimit() 204 self.assertRaises(TypeError, sys.setrecursionlimit) 205 self.assertRaises(ValueError, sys.setrecursionlimit, -42) 206 sys.setrecursionlimit(10000) 207 self.assertEqual(sys.getrecursionlimit(), 10000) 208 sys.setrecursionlimit(oldlimit) 209 210 self.assertRaises(OverflowError, sys.setrecursionlimit, 1 << 31) 211 try: 212 sys.setrecursionlimit((1 << 31) - 5) 213 try: 214 # issue13546: isinstance(e, ValueError) used to fail 215 # when the recursion limit is close to 1<<31 216 raise ValueError() 217 except ValueError, e: 218 pass 219 finally: 220 sys.setrecursionlimit(oldlimit) 221 222 def test_getwindowsversion(self): 223 # Raise SkipTest if sys doesn't have getwindowsversion attribute 224 test.test_support.get_attribute(sys, "getwindowsversion") 225 v = sys.getwindowsversion() 226 self.assertEqual(len(v), 5) 227 self.assertIsInstance(v[0], int) 228 self.assertIsInstance(v[1], int) 229 self.assertIsInstance(v[2], int) 230 self.assertIsInstance(v[3], int) 231 self.assertIsInstance(v[4], str) 232 self.assertRaises(IndexError, operator.getitem, v, 5) 233 self.assertIsInstance(v.major, int) 234 self.assertIsInstance(v.minor, int) 235 self.assertIsInstance(v.build, int) 236 self.assertIsInstance(v.platform, int) 237 self.assertIsInstance(v.service_pack, str) 238 self.assertIsInstance(v.service_pack_minor, int) 239 self.assertIsInstance(v.service_pack_major, int) 240 self.assertIsInstance(v.suite_mask, int) 241 self.assertIsInstance(v.product_type, int) 242 self.assertEqual(v[0], v.major) 243 self.assertEqual(v[1], v.minor) 244 self.assertEqual(v[2], v.build) 245 self.assertEqual(v[3], v.platform) 246 self.assertEqual(v[4], v.service_pack) 247 248 # This is how platform.py calls it. Make sure tuple 249 # still has 5 elements 250 maj, min, buildno, plat, csd = sys.getwindowsversion() 251 252 @unittest.skipUnless(hasattr(sys, "setdlopenflags"), 253 'test needs sys.setdlopenflags()') 254 def test_dlopenflags(self): 255 self.assertTrue(hasattr(sys, "getdlopenflags")) 256 self.assertRaises(TypeError, sys.getdlopenflags, 42) 257 oldflags = sys.getdlopenflags() 258 self.assertRaises(TypeError, sys.setdlopenflags) 259 sys.setdlopenflags(oldflags+1) 260 self.assertEqual(sys.getdlopenflags(), oldflags+1) 261 sys.setdlopenflags(oldflags) 262 263 def test_refcount(self): 264 # n here must be a global in order for this test to pass while 265 # tracing with a python function. Tracing calls PyFrame_FastToLocals 266 # which will add a copy of any locals to the frame object, causing 267 # the reference count to increase by 2 instead of 1. 268 global n 269 self.assertRaises(TypeError, sys.getrefcount) 270 c = sys.getrefcount(None) 271 n = None 272 self.assertEqual(sys.getrefcount(None), c+1) 273 del n 274 self.assertEqual(sys.getrefcount(None), c) 275 if hasattr(sys, "gettotalrefcount"): 276 self.assertIsInstance(sys.gettotalrefcount(), int) 277 278 def test_getframe(self): 279 self.assertRaises(TypeError, sys._getframe, 42, 42) 280 self.assertRaises(ValueError, sys._getframe, 2000000000) 281 self.assertTrue( 282 SysModuleTest.test_getframe.im_func.func_code \ 283 is sys._getframe().f_code 284 ) 285 286 # sys._current_frames() is a CPython-only gimmick. 287 def test_current_frames(self): 288 have_threads = True 289 try: 290 import thread 291 except ImportError: 292 have_threads = False 293 294 if have_threads: 295 self.current_frames_with_threads() 296 else: 297 self.current_frames_without_threads() 298 299 # Test sys._current_frames() in a WITH_THREADS build. 300 @test.test_support.reap_threads 301 def current_frames_with_threads(self): 302 import threading, thread 303 import traceback 304 305 # Spawn a thread that blocks at a known place. Then the main 306 # thread does sys._current_frames(), and verifies that the frames 307 # returned make sense. 308 entered_g = threading.Event() 309 leave_g = threading.Event() 310 thread_info = [] # the thread's id 311 312 def f123(): 313 g456() 314 315 def g456(): 316 thread_info.append(thread.get_ident()) 317 entered_g.set() 318 leave_g.wait() 319 320 t = threading.Thread(target=f123) 321 t.start() 322 entered_g.wait() 323 324 # At this point, t has finished its entered_g.set(), although it's 325 # impossible to guess whether it's still on that line or has moved on 326 # to its leave_g.wait(). 327 self.assertEqual(len(thread_info), 1) 328 thread_id = thread_info[0] 329 330 d = sys._current_frames() 331 332 main_id = thread.get_ident() 333 self.assertIn(main_id, d) 334 self.assertIn(thread_id, d) 335 336 # Verify that the captured main-thread frame is _this_ frame. 337 frame = d.pop(main_id) 338 self.assertTrue(frame is sys._getframe()) 339 340 # Verify that the captured thread frame is blocked in g456, called 341 # from f123. This is a litte tricky, since various bits of 342 # threading.py are also in the thread's call stack. 343 frame = d.pop(thread_id) 344 stack = traceback.extract_stack(frame) 345 for i, (filename, lineno, funcname, sourceline) in enumerate(stack): 346 if funcname == "f123": 347 break 348 else: 349 self.fail("didn't find f123() on thread's call stack") 350 351 self.assertEqual(sourceline, "g456()") 352 353 # And the next record must be for g456(). 354 filename, lineno, funcname, sourceline = stack[i+1] 355 self.assertEqual(funcname, "g456") 356 self.assertIn(sourceline, ["leave_g.wait()", "entered_g.set()"]) 357 358 # Reap the spawned thread. 359 leave_g.set() 360 t.join() 361 362 # Test sys._current_frames() when thread support doesn't exist. 363 def current_frames_without_threads(self): 364 # Not much happens here: there is only one thread, with artificial 365 # "thread id" 0. 366 d = sys._current_frames() 367 self.assertEqual(len(d), 1) 368 self.assertIn(0, d) 369 self.assertTrue(d[0] is sys._getframe()) 370 371 def test_attributes(self): 372 self.assertIsInstance(sys.api_version, int) 373 self.assertIsInstance(sys.argv, list) 374 self.assertIn(sys.byteorder, ("little", "big")) 375 self.assertIsInstance(sys.builtin_module_names, tuple) 376 self.assertIsInstance(sys.copyright, basestring) 377 self.assertIsInstance(sys.exec_prefix, basestring) 378 self.assertIsInstance(sys.executable, basestring) 379 self.assertEqual(len(sys.float_info), 11) 380 self.assertEqual(sys.float_info.radix, 2) 381 self.assertEqual(len(sys.long_info), 2) 382 self.assertTrue(sys.long_info.bits_per_digit % 5 == 0) 383 self.assertTrue(sys.long_info.sizeof_digit >= 1) 384 self.assertEqual(type(sys.long_info.bits_per_digit), int) 385 self.assertEqual(type(sys.long_info.sizeof_digit), int) 386 self.assertIsInstance(sys.hexversion, int) 387 self.assertIsInstance(sys.maxint, int) 388 if test.test_support.have_unicode: 389 self.assertIsInstance(sys.maxunicode, int) 390 self.assertIsInstance(sys.platform, basestring) 391 self.assertIsInstance(sys.prefix, basestring) 392 self.assertIsInstance(sys.version, basestring) 393 vi = sys.version_info 394 self.assertIsInstance(vi[:], tuple) 395 self.assertEqual(len(vi), 5) 396 self.assertIsInstance(vi[0], int) 397 self.assertIsInstance(vi[1], int) 398 self.assertIsInstance(vi[2], int) 399 self.assertIn(vi[3], ("alpha", "beta", "candidate", "final")) 400 self.assertIsInstance(vi[4], int) 401 self.assertIsInstance(vi.major, int) 402 self.assertIsInstance(vi.minor, int) 403 self.assertIsInstance(vi.micro, int) 404 self.assertIn(vi.releaselevel, ("alpha", "beta", "candidate", "final")) 405 self.assertIsInstance(vi.serial, int) 406 self.assertEqual(vi[0], vi.major) 407 self.assertEqual(vi[1], vi.minor) 408 self.assertEqual(vi[2], vi.micro) 409 self.assertEqual(vi[3], vi.releaselevel) 410 self.assertEqual(vi[4], vi.serial) 411 self.assertTrue(vi > (1,0,0)) 412 self.assertIsInstance(sys.float_repr_style, str) 413 self.assertIn(sys.float_repr_style, ('short', 'legacy')) 414 415 def test_43581(self): 416 # Can't use sys.stdout, as this is a cStringIO object when 417 # the test runs under regrtest. 418 if not (os.environ.get('PYTHONIOENCODING') or 419 (sys.__stdout__.isatty() and sys.__stderr__.isatty())): 420 self.skipTest('stdout/stderr encoding is not set') 421 self.assertEqual(sys.__stdout__.encoding, sys.__stderr__.encoding) 422 423 def test_sys_flags(self): 424 self.assertTrue(sys.flags) 425 attrs = ("debug", "py3k_warning", "division_warning", "division_new", 426 "inspect", "interactive", "optimize", "dont_write_bytecode", 427 "no_site", "ignore_environment", "tabcheck", "verbose", 428 "unicode", "bytes_warning", "hash_randomization") 429 for attr in attrs: 430 self.assertTrue(hasattr(sys.flags, attr), attr) 431 self.assertEqual(type(getattr(sys.flags, attr)), int, attr) 432 self.assertTrue(repr(sys.flags)) 433 434 @test.test_support.cpython_only 435 def test_clear_type_cache(self): 436 sys._clear_type_cache() 437 438 def test_ioencoding(self): 439 import subprocess 440 env = dict(os.environ) 441 442 # Test character: cent sign, encoded as 0x4A (ASCII J) in CP424, 443 # not representable in ASCII. 444 445 env["PYTHONIOENCODING"] = "cp424" 446 p = subprocess.Popen([sys.executable, "-c", 'print unichr(0xa2)'], 447 stdout = subprocess.PIPE, env=env) 448 out = p.communicate()[0].strip() 449 self.assertEqual(out, unichr(0xa2).encode("cp424")) 450 451 env["PYTHONIOENCODING"] = "ascii:replace" 452 p = subprocess.Popen([sys.executable, "-c", 'print unichr(0xa2)'], 453 stdout = subprocess.PIPE, env=env) 454 out = p.communicate()[0].strip() 455 self.assertEqual(out, '?') 456 457 def test_call_tracing(self): 458 self.assertEqual(sys.call_tracing(str, (2,)), "2") 459 self.assertRaises(TypeError, sys.call_tracing, str, 2) 460 461 def test_executable(self): 462 # sys.executable should be absolute 463 self.assertEqual(os.path.abspath(sys.executable), sys.executable) 464 465 # Issue #7774: Ensure that sys.executable is an empty string if argv[0] 466 # has been set to a non existent program name and Python is unable to 467 # retrieve the real program name 468 import subprocess 469 # For a normal installation, it should work without 'cwd' 470 # argument. For test runs in the build directory, see #7774. 471 python_dir = os.path.dirname(os.path.realpath(sys.executable)) 472 p = subprocess.Popen( 473 ["nonexistent", "-c", 'import sys; print repr(sys.executable)'], 474 executable=sys.executable, stdout=subprocess.PIPE, cwd=python_dir) 475 executable = p.communicate()[0].strip() 476 p.wait() 477 self.assertIn(executable, ["''", repr(sys.executable)]) 478 479 @test.test_support.cpython_only 480 class SizeofTest(unittest.TestCase): 481 482 def setUp(self): 483 self.P = struct.calcsize('P') 484 self.longdigit = sys.long_info.sizeof_digit 485 import _testcapi 486 self.gc_headsize = _testcapi.SIZEOF_PYGC_HEAD 487 488 check_sizeof = test.test_support.check_sizeof 489 490 def test_gc_head_size(self): 491 # Check that the gc header size is added to objects tracked by the gc. 492 size = test.test_support.calcobjsize 493 gc_header_size = self.gc_headsize 494 # bool objects are not gc tracked 495 self.assertEqual(sys.getsizeof(True), size('l')) 496 # but lists are 497 self.assertEqual(sys.getsizeof([]), size('P PP') + gc_header_size) 498 499 def test_errors(self): 500 class BadSizeof(object): 501 def __sizeof__(self): 502 raise ValueError 503 self.assertRaises(ValueError, sys.getsizeof, BadSizeof()) 504 505 class InvalidSizeof(object): 506 def __sizeof__(self): 507 return None 508 self.assertRaises(TypeError, sys.getsizeof, InvalidSizeof()) 509 sentinel = ["sentinel"] 510 self.assertIs(sys.getsizeof(InvalidSizeof(), sentinel), sentinel) 511 512 class OverflowSizeof(long): 513 def __sizeof__(self): 514 return int(self) 515 self.assertEqual(sys.getsizeof(OverflowSizeof(sys.maxsize)), 516 sys.maxsize + self.gc_headsize) 517 with self.assertRaises(OverflowError): 518 sys.getsizeof(OverflowSizeof(sys.maxsize + 1)) 519 with self.assertRaises(ValueError): 520 sys.getsizeof(OverflowSizeof(-1)) 521 with self.assertRaises((ValueError, OverflowError)): 522 sys.getsizeof(OverflowSizeof(-sys.maxsize - 1)) 523 524 def test_default(self): 525 size = test.test_support.calcobjsize 526 self.assertEqual(sys.getsizeof(True, -1), size('l')) 527 528 def test_objecttypes(self): 529 # check all types defined in Objects/ 530 calcsize = struct.calcsize 531 size = test.test_support.calcobjsize 532 vsize = test.test_support.calcvobjsize 533 check = self.check_sizeof 534 # bool 535 check(True, size('l')) 536 # buffer 537 with test.test_support.check_py3k_warnings(): 538 check(buffer(''), size('2P2Pil')) 539 # builtin_function_or_method 540 check(len, size('3P')) 541 # bytearray 542 samples = ['', 'u'*100000] 543 for sample in samples: 544 x = bytearray(sample) 545 check(x, vsize('iPP') + x.__alloc__()) 546 # bytearray_iterator 547 check(iter(bytearray()), size('PP')) 548 # cell 549 def get_cell(): 550 x = 42 551 def inner(): 552 return x 553 return inner 554 check(get_cell().func_closure[0], size('P')) 555 # classobj (old-style class) 556 class class_oldstyle(): 557 def method(): 558 pass 559 check(class_oldstyle, size('7P')) 560 # instance (old-style class) 561 check(class_oldstyle(), size('3P')) 562 # instancemethod (old-style class) 563 check(class_oldstyle().method, size('4P')) 564 # complex 565 check(complex(0,1), size('2d')) 566 # code 567 check(get_cell().func_code, size('4i8Pi3P')) 568 # BaseException 569 check(BaseException(), size('3P')) 570 # UnicodeEncodeError 571 check(UnicodeEncodeError("", u"", 0, 0, ""), size('5P2PP')) 572 # UnicodeDecodeError 573 check(UnicodeDecodeError("", "", 0, 0, ""), size('5P2PP')) 574 # UnicodeTranslateError 575 check(UnicodeTranslateError(u"", 0, 1, ""), size('5P2PP')) 576 # method_descriptor (descriptor object) 577 check(str.lower, size('2PP')) 578 # classmethod_descriptor (descriptor object) 579 # XXX 580 # member_descriptor (descriptor object) 581 import datetime 582 check(datetime.timedelta.days, size('2PP')) 583 # getset_descriptor (descriptor object) 584 import __builtin__ 585 check(__builtin__.file.closed, size('2PP')) 586 # wrapper_descriptor (descriptor object) 587 check(int.__add__, size('2P2P')) 588 # dictproxy 589 class C(object): pass 590 check(C.__dict__, size('P')) 591 # method-wrapper (descriptor object) 592 check({}.__iter__, size('2P')) 593 # dict 594 check({}, size('3P2P') + 8*calcsize('P2P')) 595 x = {1:1, 2:2, 3:3, 4:4, 5:5, 6:6, 7:7, 8:8} 596 check(x, size('3P2P') + 8*calcsize('P2P') + 16*calcsize('P2P')) 597 # dictionary-keyview 598 check({}.viewkeys(), size('P')) 599 # dictionary-valueview 600 check({}.viewvalues(), size('P')) 601 # dictionary-itemview 602 check({}.viewitems(), size('P')) 603 # dictionary iterator 604 check(iter({}), size('P2PPP')) 605 # dictionary-keyiterator 606 check({}.iterkeys(), size('P2PPP')) 607 # dictionary-valueiterator 608 check({}.itervalues(), size('P2PPP')) 609 # dictionary-itemiterator 610 check({}.iteritems(), size('P2PPP')) 611 # ellipses 612 check(Ellipsis, size('')) 613 # EncodingMap 614 import codecs, encodings.iso8859_3 615 x = codecs.charmap_build(encodings.iso8859_3.decoding_table) 616 check(x, size('32B2iB')) 617 # enumerate 618 check(enumerate([]), size('l3P')) 619 # file 620 f = file(test.test_support.TESTFN, 'wb') 621 try: 622 check(f, size('4P2i4P3i3P3i')) 623 finally: 624 f.close() 625 test.test_support.unlink(test.test_support.TESTFN) 626 # float 627 check(float(0), size('d')) 628 # sys.floatinfo 629 check(sys.float_info, vsize('') + self.P * len(sys.float_info)) 630 # frame 631 import inspect 632 CO_MAXBLOCKS = 20 633 x = inspect.currentframe() 634 ncells = len(x.f_code.co_cellvars) 635 nfrees = len(x.f_code.co_freevars) 636 extras = x.f_code.co_stacksize + x.f_code.co_nlocals +\ 637 ncells + nfrees - 1 638 check(x, vsize('12P3i' + CO_MAXBLOCKS*'3i' + 'P' + extras*'P')) 639 # function 640 def func(): pass 641 check(func, size('9P')) 642 class c(): 643 @staticmethod 644 def foo(): 645 pass 646 @classmethod 647 def bar(cls): 648 pass 649 # staticmethod 650 check(foo, size('P')) 651 # classmethod 652 check(bar, size('P')) 653 # generator 654 def get_gen(): yield 1 655 check(get_gen(), size('Pi2P')) 656 # integer 657 check(1, size('l')) 658 check(100, size('l')) 659 # iterator 660 check(iter('abc'), size('lP')) 661 # callable-iterator 662 import re 663 check(re.finditer('',''), size('2P')) 664 # list 665 samples = [[], [1,2,3], ['1', '2', '3']] 666 for sample in samples: 667 check(sample, vsize('PP') + len(sample)*self.P) 668 # sortwrapper (list) 669 # XXX 670 # cmpwrapper (list) 671 # XXX 672 # listiterator (list) 673 check(iter([]), size('lP')) 674 # listreverseiterator (list) 675 check(reversed([]), size('lP')) 676 # long 677 check(0L, vsize('')) 678 check(1L, vsize('') + self.longdigit) 679 check(-1L, vsize('') + self.longdigit) 680 PyLong_BASE = 2**sys.long_info.bits_per_digit 681 check(long(PyLong_BASE), vsize('') + 2*self.longdigit) 682 check(long(PyLong_BASE**2-1), vsize('') + 2*self.longdigit) 683 check(long(PyLong_BASE**2), vsize('') + 3*self.longdigit) 684 # module 685 check(unittest, size('P')) 686 # None 687 check(None, size('')) 688 # object 689 check(object(), size('')) 690 # property (descriptor object) 691 class C(object): 692 def getx(self): return self.__x 693 def setx(self, value): self.__x = value 694 def delx(self): del self.__x 695 x = property(getx, setx, delx, "") 696 check(x, size('4Pi')) 697 # PyCObject 698 # PyCapsule 699 # XXX 700 # rangeiterator 701 check(iter(xrange(1)), size('4l')) 702 # reverse 703 check(reversed(''), size('PP')) 704 # set 705 # frozenset 706 PySet_MINSIZE = 8 707 samples = [[], range(10), range(50)] 708 s = size('3P2P' + PySet_MINSIZE*'lP' + 'lP') 709 for sample in samples: 710 minused = len(sample) 711 if minused == 0: tmp = 1 712 # the computation of minused is actually a bit more complicated 713 # but this suffices for the sizeof test 714 minused = minused*2 715 newsize = PySet_MINSIZE 716 while newsize <= minused: 717 newsize = newsize << 1 718 if newsize <= 8: 719 check(set(sample), s) 720 check(frozenset(sample), s) 721 else: 722 check(set(sample), s + newsize*calcsize('lP')) 723 check(frozenset(sample), s + newsize*calcsize('lP')) 724 # setiterator 725 check(iter(set()), size('P3P')) 726 # slice 727 check(slice(1), size('3P')) 728 # str 729 vh = test.test_support._vheader 730 check('', calcsize(vh + 'lic')) 731 check('abc', calcsize(vh + 'lic') + 3) 732 # super 733 check(super(int), size('3P')) 734 # tuple 735 check((), vsize('')) 736 check((1,2,3), vsize('') + 3*self.P) 737 # tupleiterator 738 check(iter(()), size('lP')) 739 # type 740 s = vsize('P2P15Pl4PP9PP11PI' # PyTypeObject 741 '39P' # PyNumberMethods 742 '3P' # PyMappingMethods 743 '10P' # PySequenceMethods 744 '6P' # PyBufferProcs 745 '2P') 746 class newstyleclass(object): 747 pass 748 check(newstyleclass, s) 749 # builtin type 750 check(int, s) 751 # NotImplementedType 752 import types 753 check(types.NotImplementedType, s) 754 # unicode 755 usize = len(u'\0'.encode('unicode-internal')) 756 samples = [u'', u'1'*100] 757 # we need to test for both sizes, because we don't know if the string 758 # has been cached 759 for s in samples: 760 check(s, size('PPlP') + usize * (len(s) + 1)) 761 # weakref 762 import weakref 763 check(weakref.ref(int), size('2Pl2P')) 764 # weakproxy 765 # XXX 766 # weakcallableproxy 767 check(weakref.proxy(int), size('2Pl2P')) 768 # xrange 769 check(xrange(1), size('3l')) 770 check(xrange(66000), size('3l')) 771 772 def check_slots(self, obj, base, extra): 773 expected = sys.getsizeof(base) + struct.calcsize(extra) 774 if gc.is_tracked(obj) and not gc.is_tracked(base): 775 expected += self.gc_headsize 776 self.assertEqual(sys.getsizeof(obj), expected) 777 778 def test_slots(self): 779 # check all subclassable types defined in Objects/ that allow 780 # non-empty __slots__ 781 check = self.check_slots 782 class BA(bytearray): 783 __slots__ = 'a', 'b', 'c' 784 check(BA(), bytearray(), '3P') 785 class D(dict): 786 __slots__ = 'a', 'b', 'c' 787 check(D(x=[]), {'x': []}, '3P') 788 class L(list): 789 __slots__ = 'a', 'b', 'c' 790 check(L(), [], '3P') 791 class S(set): 792 __slots__ = 'a', 'b', 'c' 793 check(S(), set(), '3P') 794 class FS(frozenset): 795 __slots__ = 'a', 'b', 'c' 796 check(FS(), frozenset(), '3P') 797 798 def test_pythontypes(self): 799 # check all types defined in Python/ 800 size = test.test_support.calcobjsize 801 vsize = test.test_support.calcvobjsize 802 check = self.check_sizeof 803 # _ast.AST 804 import _ast 805 check(_ast.AST(), size('')) 806 # imp.NullImporter 807 import imp 808 f = open(test.test_support.TESTFN, 'wb') 809 try: 810 check(imp.NullImporter(f.name), size('')) 811 finally: 812 f.close() 813 test.test_support.unlink(test.test_support.TESTFN) 814 try: 815 raise TypeError 816 except TypeError: 817 tb = sys.exc_info()[2] 818 # traceback 819 if tb != None: 820 check(tb, size('2P2i')) 821 # symtable entry 822 # XXX 823 # sys.flags 824 check(sys.flags, vsize('') + self.P * len(sys.flags)) 825 826 827 def test_main(): 828 test_classes = (SysModuleTest, SizeofTest) 829 830 test.test_support.run_unittest(*test_classes) 831 832 if __name__ == "__main__": 833 test_main() 834
