test_sys.py revision 3b3499ba69341a49fc842ce0d4a2f66fcb249a04
1import unittest, test.support 2import sys, io, os 3import struct 4import subprocess 5import textwrap 6import warnings 7import operator 8import codecs 9 10# count the number of test runs, used to create unique 11# strings to intern in test_intern() 12numruns = 0 13 14try: 15 import threading 16except ImportError: 17 threading = None 18 19class SysModuleTest(unittest.TestCase): 20 21 def setUp(self): 22 self.orig_stdout = sys.stdout 23 self.orig_stderr = sys.stderr 24 self.orig_displayhook = sys.displayhook 25 26 def tearDown(self): 27 sys.stdout = self.orig_stdout 28 sys.stderr = self.orig_stderr 29 sys.displayhook = self.orig_displayhook 30 test.support.reap_children() 31 32 def test_original_displayhook(self): 33 import builtins 34 out = io.StringIO() 35 sys.stdout = out 36 37 dh = sys.__displayhook__ 38 39 self.assertRaises(TypeError, dh) 40 if hasattr(builtins, "_"): 41 del builtins._ 42 43 dh(None) 44 self.assertEqual(out.getvalue(), "") 45 self.assertTrue(not hasattr(builtins, "_")) 46 dh(42) 47 self.assertEqual(out.getvalue(), "42\n") 48 self.assertEqual(builtins._, 42) 49 50 del sys.stdout 51 self.assertRaises(RuntimeError, dh, 42) 52 53 def test_lost_displayhook(self): 54 del sys.displayhook 55 code = compile("42", "<string>", "single") 56 self.assertRaises(RuntimeError, eval, code) 57 58 def test_custom_displayhook(self): 59 def baddisplayhook(obj): 60 raise ValueError 61 sys.displayhook = baddisplayhook 62 code = compile("42", "<string>", "single") 63 self.assertRaises(ValueError, eval, code) 64 65 def test_original_excepthook(self): 66 err = io.StringIO() 67 sys.stderr = err 68 69 eh = sys.__excepthook__ 70 71 self.assertRaises(TypeError, eh) 72 try: 73 raise ValueError(42) 74 except ValueError as exc: 75 eh(*sys.exc_info()) 76 77 self.assertTrue(err.getvalue().endswith("ValueError: 42\n")) 78 79 def test_excepthook(self): 80 with test.support.captured_output("stderr") as stderr: 81 sys.excepthook(1, '1', 1) 82 self.assertTrue("TypeError: print_exception(): Exception expected for " \ 83 "value, str found" in stderr.getvalue()) 84 85 # FIXME: testing the code for a lost or replaced excepthook in 86 # Python/pythonrun.c::PyErr_PrintEx() is tricky. 87 88 def test_exit(self): 89 90 self.assertRaises(TypeError, sys.exit, 42, 42) 91 92 # call without argument 93 try: 94 sys.exit(0) 95 except SystemExit as exc: 96 self.assertEqual(exc.code, 0) 97 except: 98 self.fail("wrong exception") 99 else: 100 self.fail("no exception") 101 102 # call with tuple argument with one entry 103 # entry will be unpacked 104 try: 105 sys.exit(42) 106 except SystemExit as exc: 107 self.assertEqual(exc.code, 42) 108 except: 109 self.fail("wrong exception") 110 else: 111 self.fail("no exception") 112 113 # call with integer argument 114 try: 115 sys.exit((42,)) 116 except SystemExit as exc: 117 self.assertEqual(exc.code, 42) 118 except: 119 self.fail("wrong exception") 120 else: 121 self.fail("no exception") 122 123 # call with string argument 124 try: 125 sys.exit("exit") 126 except SystemExit as exc: 127 self.assertEqual(exc.code, "exit") 128 except: 129 self.fail("wrong exception") 130 else: 131 self.fail("no exception") 132 133 # call with tuple argument with two entries 134 try: 135 sys.exit((17, 23)) 136 except SystemExit as exc: 137 self.assertEqual(exc.code, (17, 23)) 138 except: 139 self.fail("wrong exception") 140 else: 141 self.fail("no exception") 142 143 # test that the exit machinery handles SystemExits properly 144 rc = subprocess.call([sys.executable, "-c", 145 "raise SystemExit(47)"]) 146 self.assertEqual(rc, 47) 147 148 def check_exit_message(code, expected, env=None): 149 process = subprocess.Popen([sys.executable, "-c", code], 150 stderr=subprocess.PIPE, env=env) 151 stdout, stderr = process.communicate() 152 self.assertEqual(process.returncode, 1) 153 self.assertTrue(stderr.startswith(expected), 154 "%s doesn't start with %s" % (ascii(stderr), ascii(expected))) 155 156 # test that stderr buffer if flushed before the exit message is written 157 # into stderr 158 check_exit_message( 159 r'import sys; sys.stderr.write("unflushed,"); sys.exit("message")', 160 b"unflushed,message") 161 162 # test that the exit message is written with backslashreplace error 163 # handler to stderr 164 check_exit_message( 165 r'import sys; sys.exit("surrogates:\uDCFF")', 166 b"surrogates:\\udcff") 167 168 # test that the unicode message is encoded to the stderr encoding 169 # instead of the default encoding (utf8) 170 env = os.environ.copy() 171 env['PYTHONIOENCODING'] = 'latin-1' 172 check_exit_message( 173 r'import sys; sys.exit("h\xe9")', 174 b"h\xe9", env=env) 175 176 def test_getdefaultencoding(self): 177 self.assertRaises(TypeError, sys.getdefaultencoding, 42) 178 # can't check more than the type, as the user might have changed it 179 self.assertIsInstance(sys.getdefaultencoding(), str) 180 181 # testing sys.settrace() is done in test_sys_settrace.py 182 # testing sys.setprofile() is done in test_sys_setprofile.py 183 184 def test_setcheckinterval(self): 185 with warnings.catch_warnings(): 186 warnings.simplefilter("ignore") 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.assertEqual(sys.getcheckinterval(), n) 192 193 @unittest.skipUnless(threading, 'Threading required for this test.') 194 def test_switchinterval(self): 195 self.assertRaises(TypeError, sys.setswitchinterval) 196 self.assertRaises(TypeError, sys.setswitchinterval, "a") 197 self.assertRaises(ValueError, sys.setswitchinterval, -1.0) 198 self.assertRaises(ValueError, sys.setswitchinterval, 0.0) 199 orig = sys.getswitchinterval() 200 # sanity check 201 self.assertTrue(orig < 0.5, orig) 202 try: 203 for n in 0.00001, 0.05, 3.0, orig: 204 sys.setswitchinterval(n) 205 self.assertAlmostEqual(sys.getswitchinterval(), n) 206 finally: 207 sys.setswitchinterval(orig) 208 209 def test_recursionlimit(self): 210 self.assertRaises(TypeError, sys.getrecursionlimit, 42) 211 oldlimit = sys.getrecursionlimit() 212 self.assertRaises(TypeError, sys.setrecursionlimit) 213 self.assertRaises(ValueError, sys.setrecursionlimit, -42) 214 sys.setrecursionlimit(10000) 215 self.assertEqual(sys.getrecursionlimit(), 10000) 216 sys.setrecursionlimit(oldlimit) 217 218 @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(), 219 'fatal error if run with a trace function') 220 def test_recursionlimit_recovery(self): 221 # NOTE: this test is slightly fragile in that it depends on the current 222 # recursion count when executing the test being low enough so as to 223 # trigger the recursion recovery detection in the _Py_MakeEndRecCheck 224 # macro (see ceval.h). 225 oldlimit = sys.getrecursionlimit() 226 def f(): 227 f() 228 try: 229 for i in (50, 1000): 230 # Issue #5392: stack overflow after hitting recursion limit twice 231 sys.setrecursionlimit(i) 232 self.assertRaises(RuntimeError, f) 233 self.assertRaises(RuntimeError, f) 234 finally: 235 sys.setrecursionlimit(oldlimit) 236 237 def test_recursionlimit_fatalerror(self): 238 # A fatal error occurs if a second recursion limit is hit when recovering 239 # from a first one. 240 if os.name == "nt": 241 raise unittest.SkipTest( 242 "under Windows, test would generate a spurious crash dialog") 243 code = textwrap.dedent(""" 244 import sys 245 246 def f(): 247 try: 248 f() 249 except RuntimeError: 250 f() 251 252 sys.setrecursionlimit(%d) 253 f()""") 254 for i in (50, 1000): 255 sub = subprocess.Popen([sys.executable, '-c', code % i], 256 stderr=subprocess.PIPE) 257 err = sub.communicate()[1] 258 self.assertTrue(sub.returncode, sub.returncode) 259 self.assertTrue( 260 b"Fatal Python error: Cannot recover from stack overflow" in err, 261 err) 262 263 def test_getwindowsversion(self): 264 # Raise SkipTest if sys doesn't have getwindowsversion attribute 265 test.support.get_attribute(sys, "getwindowsversion") 266 v = sys.getwindowsversion() 267 self.assertEqual(len(v), 5) 268 self.assertIsInstance(v[0], int) 269 self.assertIsInstance(v[1], int) 270 self.assertIsInstance(v[2], int) 271 self.assertIsInstance(v[3], int) 272 self.assertIsInstance(v[4], str) 273 self.assertRaises(IndexError, operator.getitem, v, 5) 274 self.assertIsInstance(v.major, int) 275 self.assertIsInstance(v.minor, int) 276 self.assertIsInstance(v.build, int) 277 self.assertIsInstance(v.platform, int) 278 self.assertIsInstance(v.service_pack, str) 279 self.assertIsInstance(v.service_pack_minor, int) 280 self.assertIsInstance(v.service_pack_major, int) 281 self.assertIsInstance(v.suite_mask, int) 282 self.assertIsInstance(v.product_type, int) 283 self.assertEqual(v[0], v.major) 284 self.assertEqual(v[1], v.minor) 285 self.assertEqual(v[2], v.build) 286 self.assertEqual(v[3], v.platform) 287 self.assertEqual(v[4], v.service_pack) 288 289 # This is how platform.py calls it. Make sure tuple 290 # still has 5 elements 291 maj, min, buildno, plat, csd = sys.getwindowsversion() 292 293 def test_call_tracing(self): 294 self.assertRaises(TypeError, sys.call_tracing, type, 2) 295 296 def test_dlopenflags(self): 297 if hasattr(sys, "setdlopenflags"): 298 self.assertTrue(hasattr(sys, "getdlopenflags")) 299 self.assertRaises(TypeError, sys.getdlopenflags, 42) 300 oldflags = sys.getdlopenflags() 301 self.assertRaises(TypeError, sys.setdlopenflags) 302 sys.setdlopenflags(oldflags+1) 303 self.assertEqual(sys.getdlopenflags(), oldflags+1) 304 sys.setdlopenflags(oldflags) 305 306 def test_refcount(self): 307 # n here must be a global in order for this test to pass while 308 # tracing with a python function. Tracing calls PyFrame_FastToLocals 309 # which will add a copy of any locals to the frame object, causing 310 # the reference count to increase by 2 instead of 1. 311 global n 312 self.assertRaises(TypeError, sys.getrefcount) 313 c = sys.getrefcount(None) 314 n = None 315 self.assertEqual(sys.getrefcount(None), c+1) 316 del n 317 self.assertEqual(sys.getrefcount(None), c) 318 if hasattr(sys, "gettotalrefcount"): 319 self.assertIsInstance(sys.gettotalrefcount(), int) 320 321 def test_getframe(self): 322 self.assertRaises(TypeError, sys._getframe, 42, 42) 323 self.assertRaises(ValueError, sys._getframe, 2000000000) 324 self.assertTrue( 325 SysModuleTest.test_getframe.__code__ \ 326 is sys._getframe().f_code 327 ) 328 329 # sys._current_frames() is a CPython-only gimmick. 330 def test_current_frames(self): 331 have_threads = True 332 try: 333 import _thread 334 except ImportError: 335 have_threads = False 336 337 if have_threads: 338 self.current_frames_with_threads() 339 else: 340 self.current_frames_without_threads() 341 342 # Test sys._current_frames() in a WITH_THREADS build. 343 @test.support.reap_threads 344 def current_frames_with_threads(self): 345 import threading, _thread 346 import traceback 347 348 # Spawn a thread that blocks at a known place. Then the main 349 # thread does sys._current_frames(), and verifies that the frames 350 # returned make sense. 351 entered_g = threading.Event() 352 leave_g = threading.Event() 353 thread_info = [] # the thread's id 354 355 def f123(): 356 g456() 357 358 def g456(): 359 thread_info.append(_thread.get_ident()) 360 entered_g.set() 361 leave_g.wait() 362 363 t = threading.Thread(target=f123) 364 t.start() 365 entered_g.wait() 366 367 # At this point, t has finished its entered_g.set(), although it's 368 # impossible to guess whether it's still on that line or has moved on 369 # to its leave_g.wait(). 370 self.assertEqual(len(thread_info), 1) 371 thread_id = thread_info[0] 372 373 d = sys._current_frames() 374 375 main_id = _thread.get_ident() 376 self.assertIn(main_id, d) 377 self.assertIn(thread_id, d) 378 379 # Verify that the captured main-thread frame is _this_ frame. 380 frame = d.pop(main_id) 381 self.assertTrue(frame is sys._getframe()) 382 383 # Verify that the captured thread frame is blocked in g456, called 384 # from f123. This is a litte tricky, since various bits of 385 # threading.py are also in the thread's call stack. 386 frame = d.pop(thread_id) 387 stack = traceback.extract_stack(frame) 388 for i, (filename, lineno, funcname, sourceline) in enumerate(stack): 389 if funcname == "f123": 390 break 391 else: 392 self.fail("didn't find f123() on thread's call stack") 393 394 self.assertEqual(sourceline, "g456()") 395 396 # And the next record must be for g456(). 397 filename, lineno, funcname, sourceline = stack[i+1] 398 self.assertEqual(funcname, "g456") 399 self.assertIn(sourceline, ["leave_g.wait()", "entered_g.set()"]) 400 401 # Reap the spawned thread. 402 leave_g.set() 403 t.join() 404 405 # Test sys._current_frames() when thread support doesn't exist. 406 def current_frames_without_threads(self): 407 # Not much happens here: there is only one thread, with artificial 408 # "thread id" 0. 409 d = sys._current_frames() 410 self.assertEqual(len(d), 1) 411 self.assertIn(0, d) 412 self.assertTrue(d[0] is sys._getframe()) 413 414 def test_attributes(self): 415 self.assertIsInstance(sys.api_version, int) 416 self.assertIsInstance(sys.argv, list) 417 self.assertIn(sys.byteorder, ("little", "big")) 418 self.assertIsInstance(sys.builtin_module_names, tuple) 419 self.assertIsInstance(sys.copyright, str) 420 self.assertIsInstance(sys.exec_prefix, str) 421 self.assertIsInstance(sys.executable, str) 422 self.assertEqual(len(sys.float_info), 11) 423 self.assertEqual(sys.float_info.radix, 2) 424 self.assertEqual(len(sys.int_info), 2) 425 self.assertTrue(sys.int_info.bits_per_digit % 5 == 0) 426 self.assertTrue(sys.int_info.sizeof_digit >= 1) 427 self.assertEqual(type(sys.int_info.bits_per_digit), int) 428 self.assertEqual(type(sys.int_info.sizeof_digit), int) 429 self.assertIsInstance(sys.hexversion, int) 430 431 self.assertEqual(len(sys.hash_info), 5) 432 self.assertLess(sys.hash_info.modulus, 2**sys.hash_info.width) 433 # sys.hash_info.modulus should be a prime; we do a quick 434 # probable primality test (doesn't exclude the possibility of 435 # a Carmichael number) 436 for x in range(1, 100): 437 self.assertEqual( 438 pow(x, sys.hash_info.modulus-1, sys.hash_info.modulus), 439 1, 440 "sys.hash_info.modulus {} is a non-prime".format( 441 sys.hash_info.modulus) 442 ) 443 self.assertIsInstance(sys.hash_info.inf, int) 444 self.assertIsInstance(sys.hash_info.nan, int) 445 self.assertIsInstance(sys.hash_info.imag, int) 446 447 self.assertIsInstance(sys.maxsize, int) 448 self.assertIsInstance(sys.maxunicode, int) 449 self.assertIsInstance(sys.platform, str) 450 self.assertIsInstance(sys.prefix, str) 451 self.assertIsInstance(sys.version, str) 452 vi = sys.version_info 453 self.assertIsInstance(vi[:], tuple) 454 self.assertEqual(len(vi), 5) 455 self.assertIsInstance(vi[0], int) 456 self.assertIsInstance(vi[1], int) 457 self.assertIsInstance(vi[2], int) 458 self.assertIn(vi[3], ("alpha", "beta", "candidate", "final")) 459 self.assertIsInstance(vi[4], int) 460 self.assertIsInstance(vi.major, int) 461 self.assertIsInstance(vi.minor, int) 462 self.assertIsInstance(vi.micro, int) 463 self.assertIn(vi.releaselevel, ("alpha", "beta", "candidate", "final")) 464 self.assertIsInstance(vi.serial, int) 465 self.assertEqual(vi[0], vi.major) 466 self.assertEqual(vi[1], vi.minor) 467 self.assertEqual(vi[2], vi.micro) 468 self.assertEqual(vi[3], vi.releaselevel) 469 self.assertEqual(vi[4], vi.serial) 470 self.assertTrue(vi > (1,0,0)) 471 self.assertIsInstance(sys.float_repr_style, str) 472 self.assertIn(sys.float_repr_style, ('short', 'legacy')) 473 if not sys.platform.startswith('win'): 474 self.assertIsInstance(sys.abiflags, str) 475 476 def test_43581(self): 477 # Can't use sys.stdout, as this is a StringIO object when 478 # the test runs under regrtest. 479 self.assertEqual(sys.__stdout__.encoding, sys.__stderr__.encoding) 480 481 def test_intern(self): 482 global numruns 483 numruns += 1 484 self.assertRaises(TypeError, sys.intern) 485 s = "never interned before" + str(numruns) 486 self.assertTrue(sys.intern(s) is s) 487 s2 = s.swapcase().swapcase() 488 self.assertTrue(sys.intern(s2) is s) 489 490 # Subclasses of string can't be interned, because they 491 # provide too much opportunity for insane things to happen. 492 # We don't want them in the interned dict and if they aren't 493 # actually interned, we don't want to create the appearance 494 # that they are by allowing intern() to succeed. 495 class S(str): 496 def __hash__(self): 497 return 123 498 499 self.assertRaises(TypeError, sys.intern, S("abc")) 500 501 def test_sys_flags(self): 502 self.assertTrue(sys.flags) 503 attrs = ("debug", "division_warning", 504 "inspect", "interactive", "optimize", "dont_write_bytecode", 505 "no_user_site", "no_site", "ignore_environment", "verbose", 506 "bytes_warning", "quiet") 507 for attr in attrs: 508 self.assertTrue(hasattr(sys.flags, attr), attr) 509 self.assertEqual(type(getattr(sys.flags, attr)), int, attr) 510 self.assertTrue(repr(sys.flags)) 511 self.assertEqual(len(sys.flags), len(attrs)) 512 513 def test_clear_type_cache(self): 514 sys._clear_type_cache() 515 516 def test_ioencoding(self): 517 env = dict(os.environ) 518 519 # Test character: cent sign, encoded as 0x4A (ASCII J) in CP424, 520 # not representable in ASCII. 521 522 env["PYTHONIOENCODING"] = "cp424" 523 p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'], 524 stdout = subprocess.PIPE, env=env) 525 out = p.communicate()[0].strip() 526 self.assertEqual(out, "\xa2\n".encode("cp424")) 527 528 env["PYTHONIOENCODING"] = "ascii:replace" 529 p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'], 530 stdout = subprocess.PIPE, env=env) 531 out = p.communicate()[0].strip() 532 self.assertEqual(out, b'?') 533 534 def test_executable(self): 535 # Issue #7774: Ensure that sys.executable is an empty string if argv[0] 536 # has been set to an non existent program name and Python is unable to 537 # retrieve the real program name 538 539 # For a normal installation, it should work without 'cwd' 540 # argument. For test runs in the build directory, see #7774. 541 python_dir = os.path.dirname(os.path.realpath(sys.executable)) 542 p = subprocess.Popen( 543 ["nonexistent", "-c", 544 'import sys; print(sys.executable.encode("ascii", "backslashreplace"))'], 545 executable=sys.executable, stdout=subprocess.PIPE, cwd=python_dir) 546 stdout = p.communicate()[0] 547 executable = stdout.strip().decode("ASCII") 548 p.wait() 549 self.assertIn(executable, ["b''", repr(sys.executable.encode("ascii", "backslashreplace"))]) 550 551 def check_fsencoding(self, fs_encoding, expected=None): 552 self.assertIsNotNone(fs_encoding) 553 codecs.lookup(fs_encoding) 554 if expected: 555 self.assertEqual(fs_encoding, expected) 556 557 def test_getfilesystemencoding(self): 558 fs_encoding = sys.getfilesystemencoding() 559 if sys.platform == 'darwin': 560 expected = 'utf-8' 561 elif sys.platform == 'win32': 562 expected = 'mbcs' 563 else: 564 expected = None 565 self.check_fsencoding(fs_encoding, expected) 566 567 568class SizeofTest(unittest.TestCase): 569 570 TPFLAGS_HAVE_GC = 1<<14 571 TPFLAGS_HEAPTYPE = 1<<9 572 573 def setUp(self): 574 self.c = len(struct.pack('c', b' ')) 575 self.H = len(struct.pack('H', 0)) 576 self.i = len(struct.pack('i', 0)) 577 self.l = len(struct.pack('l', 0)) 578 self.P = len(struct.pack('P', 0)) 579 # due to missing size_t information from struct, it is assumed that 580 # sizeof(Py_ssize_t) = sizeof(void*) 581 self.header = 'PP' 582 self.vheader = self.header + 'P' 583 if hasattr(sys, "gettotalrefcount"): 584 self.header += '2P' 585 self.vheader += '2P' 586 self.longdigit = sys.int_info.sizeof_digit 587 import _testcapi 588 self.gc_headsize = _testcapi.SIZEOF_PYGC_HEAD 589 self.file = open(test.support.TESTFN, 'wb') 590 591 def tearDown(self): 592 self.file.close() 593 test.support.unlink(test.support.TESTFN) 594 595 def check_sizeof(self, o, size): 596 result = sys.getsizeof(o) 597 # add GC header size 598 if ((type(o) == type) and (o.__flags__ & self.TPFLAGS_HEAPTYPE) or\ 599 ((type(o) != type) and (type(o).__flags__ & self.TPFLAGS_HAVE_GC))): 600 size += self.gc_headsize 601 msg = 'wrong size for %s: got %d, expected %d' \ 602 % (type(o), result, size) 603 self.assertEqual(result, size, msg) 604 605 def calcsize(self, fmt): 606 """Wrapper around struct.calcsize which enforces the alignment of the 607 end of a structure to the alignment requirement of pointer. 608 609 Note: This wrapper should only be used if a pointer member is included 610 and no member with a size larger than a pointer exists. 611 """ 612 return struct.calcsize(fmt + '0P') 613 614 def test_gc_head_size(self): 615 # Check that the gc header size is added to objects tracked by the gc. 616 h = self.header 617 vh = self.vheader 618 size = self.calcsize 619 gc_header_size = self.gc_headsize 620 # bool objects are not gc tracked 621 self.assertEqual(sys.getsizeof(True), size(vh) + self.longdigit) 622 # but lists are 623 self.assertEqual(sys.getsizeof([]), size(vh + 'PP') + gc_header_size) 624 625 def test_default(self): 626 h = self.header 627 vh = self.vheader 628 size = self.calcsize 629 self.assertEqual(sys.getsizeof(True), size(vh) + self.longdigit) 630 self.assertEqual(sys.getsizeof(True, -1), size(vh) + self.longdigit) 631 632 def test_objecttypes(self): 633 # check all types defined in Objects/ 634 h = self.header 635 vh = self.vheader 636 size = self.calcsize 637 check = self.check_sizeof 638 # bool 639 check(True, size(vh) + self.longdigit) 640 # buffer 641 # XXX 642 # builtin_function_or_method 643 check(len, size(h + '3P')) 644 # bytearray 645 samples = [b'', b'u'*100000] 646 for sample in samples: 647 x = bytearray(sample) 648 check(x, size(vh + 'iPP') + x.__alloc__() * self.c) 649 # bytearray_iterator 650 check(iter(bytearray()), size(h + 'PP')) 651 # cell 652 def get_cell(): 653 x = 42 654 def inner(): 655 return x 656 return inner 657 check(get_cell().__closure__[0], size(h + 'P')) 658 # code 659 check(get_cell().__code__, size(h + '5i8Pi3P')) 660 # complex 661 check(complex(0,1), size(h + '2d')) 662 # method_descriptor (descriptor object) 663 check(str.lower, size(h + '2PP')) 664 # classmethod_descriptor (descriptor object) 665 # XXX 666 # member_descriptor (descriptor object) 667 import datetime 668 check(datetime.timedelta.days, size(h + '2PP')) 669 # getset_descriptor (descriptor object) 670 import collections 671 check(collections.defaultdict.default_factory, size(h + '2PP')) 672 # wrapper_descriptor (descriptor object) 673 check(int.__add__, size(h + '2P2P')) 674 # method-wrapper (descriptor object) 675 check({}.__iter__, size(h + '2P')) 676 # dict 677 check({}, size(h + '3P2P' + 8*'P2P')) 678 longdict = {1:1, 2:2, 3:3, 4:4, 5:5, 6:6, 7:7, 8:8} 679 check(longdict, size(h + '3P2P' + 8*'P2P') + 16*size('P2P')) 680 # dictionary-keyiterator 681 check({}.keys(), size(h + 'P')) 682 # dictionary-valueiterator 683 check({}.values(), size(h + 'P')) 684 # dictionary-itemiterator 685 check({}.items(), size(h + 'P')) 686 # dictproxy 687 class C(object): pass 688 check(C.__dict__, size(h + 'P')) 689 # BaseException 690 check(BaseException(), size(h + '5P')) 691 # UnicodeEncodeError 692 check(UnicodeEncodeError("", "", 0, 0, ""), size(h + '5P 2P2PP')) 693 # UnicodeDecodeError 694 # XXX 695# check(UnicodeDecodeError("", "", 0, 0, ""), size(h + '5P2PP')) 696 # UnicodeTranslateError 697 check(UnicodeTranslateError("", 0, 1, ""), size(h + '5P 2P2PP')) 698 # ellipses 699 check(Ellipsis, size(h + '')) 700 # EncodingMap 701 import codecs, encodings.iso8859_3 702 x = codecs.charmap_build(encodings.iso8859_3.decoding_table) 703 check(x, size(h + '32B2iB')) 704 # enumerate 705 check(enumerate([]), size(h + 'l3P')) 706 # reverse 707 check(reversed(''), size(h + 'PP')) 708 # float 709 check(float(0), size(h + 'd')) 710 # sys.floatinfo 711 check(sys.float_info, size(vh) + self.P * len(sys.float_info)) 712 # frame 713 import inspect 714 CO_MAXBLOCKS = 20 715 x = inspect.currentframe() 716 ncells = len(x.f_code.co_cellvars) 717 nfrees = len(x.f_code.co_freevars) 718 extras = x.f_code.co_stacksize + x.f_code.co_nlocals +\ 719 ncells + nfrees - 1 720 check(x, size(vh + '12P3i' + CO_MAXBLOCKS*'3i' + 'P' + extras*'P')) 721 # function 722 def func(): pass 723 check(func, size(h + '11P')) 724 class c(): 725 @staticmethod 726 def foo(): 727 pass 728 @classmethod 729 def bar(cls): 730 pass 731 # staticmethod 732 check(foo, size(h + 'P')) 733 # classmethod 734 check(bar, size(h + 'P')) 735 # generator 736 def get_gen(): yield 1 737 check(get_gen(), size(h + 'Pi2P')) 738 # iterator 739 check(iter('abc'), size(h + 'lP')) 740 # callable-iterator 741 import re 742 check(re.finditer('',''), size(h + '2P')) 743 # list 744 samples = [[], [1,2,3], ['1', '2', '3']] 745 for sample in samples: 746 check(sample, size(vh + 'PP') + len(sample)*self.P) 747 # sortwrapper (list) 748 # XXX 749 # cmpwrapper (list) 750 # XXX 751 # listiterator (list) 752 check(iter([]), size(h + 'lP')) 753 # listreverseiterator (list) 754 check(reversed([]), size(h + 'lP')) 755 # long 756 check(0, size(vh)) 757 check(1, size(vh) + self.longdigit) 758 check(-1, size(vh) + self.longdigit) 759 PyLong_BASE = 2**sys.int_info.bits_per_digit 760 check(int(PyLong_BASE), size(vh) + 2*self.longdigit) 761 check(int(PyLong_BASE**2-1), size(vh) + 2*self.longdigit) 762 check(int(PyLong_BASE**2), size(vh) + 3*self.longdigit) 763 # memory 764 check(memoryview(b''), size(h + 'PP2P2i7P')) 765 # module 766 check(unittest, size(h + '3P')) 767 # None 768 check(None, size(h + '')) 769 # NotImplementedType 770 check(NotImplemented, size(h)) 771 # object 772 check(object(), size(h + '')) 773 # property (descriptor object) 774 class C(object): 775 def getx(self): return self.__x 776 def setx(self, value): self.__x = value 777 def delx(self): del self.__x 778 x = property(getx, setx, delx, "") 779 check(x, size(h + '4Pi')) 780 # PyCapsule 781 # XXX 782 # rangeiterator 783 check(iter(range(1)), size(h + '4l')) 784 # reverse 785 check(reversed(''), size(h + 'PP')) 786 # range 787 check(range(1), size(h + '4P')) 788 check(range(66000), size(h + '4P')) 789 # set 790 # frozenset 791 PySet_MINSIZE = 8 792 samples = [[], range(10), range(50)] 793 s = size(h + '3P2P' + PySet_MINSIZE*'lP' + 'lP') 794 for sample in samples: 795 minused = len(sample) 796 if minused == 0: tmp = 1 797 # the computation of minused is actually a bit more complicated 798 # but this suffices for the sizeof test 799 minused = minused*2 800 newsize = PySet_MINSIZE 801 while newsize <= minused: 802 newsize = newsize << 1 803 if newsize <= 8: 804 check(set(sample), s) 805 check(frozenset(sample), s) 806 else: 807 check(set(sample), s + newsize*struct.calcsize('lP')) 808 check(frozenset(sample), s + newsize*struct.calcsize('lP')) 809 # setiterator 810 check(iter(set()), size(h + 'P3P')) 811 # slice 812 check(slice(0), size(h + '3P')) 813 # super 814 check(super(int), size(h + '3P')) 815 # tuple 816 check((), size(vh)) 817 check((1,2,3), size(vh) + 3*self.P) 818 # type 819 # (PyTypeObject + PyNumberMethods + PyMappingMethods + 820 # PySequenceMethods + PyBufferProcs) 821 s = size(vh + 'P2P15Pl4PP9PP11PI') + size('16Pi17P 3P 10P 2P 2P') 822 check(int, s) 823 # class 824 class newstyleclass(object): pass 825 check(newstyleclass, s) 826 # unicode 827 usize = len('\0'.encode('unicode-internal')) 828 samples = ['', '1'*100] 829 # we need to test for both sizes, because we don't know if the string 830 # has been cached 831 for s in samples: 832 basicsize = size(h + 'PPPiP') + usize * (len(s) + 1) 833 check(s, basicsize) 834 # weakref 835 import weakref 836 check(weakref.ref(int), size(h + '2Pl2P')) 837 # weakproxy 838 # XXX 839 # weakcallableproxy 840 check(weakref.proxy(int), size(h + '2Pl2P')) 841 842 def test_pythontypes(self): 843 # check all types defined in Python/ 844 h = self.header 845 vh = self.vheader 846 size = self.calcsize 847 check = self.check_sizeof 848 # _ast.AST 849 import _ast 850 check(_ast.AST(), size(h + '')) 851 # imp.NullImporter 852 import imp 853 check(imp.NullImporter(self.file.name), size(h + '')) 854 try: 855 raise TypeError 856 except TypeError: 857 tb = sys.exc_info()[2] 858 # traceback 859 if tb != None: 860 check(tb, size(h + '2P2i')) 861 # symtable entry 862 # XXX 863 # sys.flags 864 check(sys.flags, size(vh) + self.P * len(sys.flags)) 865 866 867def test_main(): 868 test.support.run_unittest(SysModuleTest, SizeofTest) 869 870if __name__ == "__main__": 871 test_main() 872