test_sys.py revision 48006cf1a8b8d1cadb422619c3b51bb17b4e9405
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 @test.support.refcount_test 307 def test_refcount(self): 308 # n here must be a global in order for this test to pass while 309 # tracing with a python function. Tracing calls PyFrame_FastToLocals 310 # which will add a copy of any locals to the frame object, causing 311 # the reference count to increase by 2 instead of 1. 312 global n 313 self.assertRaises(TypeError, sys.getrefcount) 314 c = sys.getrefcount(None) 315 n = None 316 self.assertEqual(sys.getrefcount(None), c+1) 317 del n 318 self.assertEqual(sys.getrefcount(None), c) 319 if hasattr(sys, "gettotalrefcount"): 320 self.assertIsInstance(sys.gettotalrefcount(), int) 321 322 def test_getframe(self): 323 self.assertRaises(TypeError, sys._getframe, 42, 42) 324 self.assertRaises(ValueError, sys._getframe, 2000000000) 325 self.assertTrue( 326 SysModuleTest.test_getframe.__code__ \ 327 is sys._getframe().f_code 328 ) 329 330 # sys._current_frames() is a CPython-only gimmick. 331 def test_current_frames(self): 332 have_threads = True 333 try: 334 import _thread 335 except ImportError: 336 have_threads = False 337 338 if have_threads: 339 self.current_frames_with_threads() 340 else: 341 self.current_frames_without_threads() 342 343 # Test sys._current_frames() in a WITH_THREADS build. 344 @test.support.reap_threads 345 def current_frames_with_threads(self): 346 import threading, _thread 347 import traceback 348 349 # Spawn a thread that blocks at a known place. Then the main 350 # thread does sys._current_frames(), and verifies that the frames 351 # returned make sense. 352 entered_g = threading.Event() 353 leave_g = threading.Event() 354 thread_info = [] # the thread's id 355 356 def f123(): 357 g456() 358 359 def g456(): 360 thread_info.append(_thread.get_ident()) 361 entered_g.set() 362 leave_g.wait() 363 364 t = threading.Thread(target=f123) 365 t.start() 366 entered_g.wait() 367 368 # At this point, t has finished its entered_g.set(), although it's 369 # impossible to guess whether it's still on that line or has moved on 370 # to its leave_g.wait(). 371 self.assertEqual(len(thread_info), 1) 372 thread_id = thread_info[0] 373 374 d = sys._current_frames() 375 376 main_id = _thread.get_ident() 377 self.assertIn(main_id, d) 378 self.assertIn(thread_id, d) 379 380 # Verify that the captured main-thread frame is _this_ frame. 381 frame = d.pop(main_id) 382 self.assertTrue(frame is sys._getframe()) 383 384 # Verify that the captured thread frame is blocked in g456, called 385 # from f123. This is a litte tricky, since various bits of 386 # threading.py are also in the thread's call stack. 387 frame = d.pop(thread_id) 388 stack = traceback.extract_stack(frame) 389 for i, (filename, lineno, funcname, sourceline) in enumerate(stack): 390 if funcname == "f123": 391 break 392 else: 393 self.fail("didn't find f123() on thread's call stack") 394 395 self.assertEqual(sourceline, "g456()") 396 397 # And the next record must be for g456(). 398 filename, lineno, funcname, sourceline = stack[i+1] 399 self.assertEqual(funcname, "g456") 400 self.assertIn(sourceline, ["leave_g.wait()", "entered_g.set()"]) 401 402 # Reap the spawned thread. 403 leave_g.set() 404 t.join() 405 406 # Test sys._current_frames() when thread support doesn't exist. 407 def current_frames_without_threads(self): 408 # Not much happens here: there is only one thread, with artificial 409 # "thread id" 0. 410 d = sys._current_frames() 411 self.assertEqual(len(d), 1) 412 self.assertIn(0, d) 413 self.assertTrue(d[0] is sys._getframe()) 414 415 def test_attributes(self): 416 self.assertIsInstance(sys.api_version, int) 417 self.assertIsInstance(sys.argv, list) 418 self.assertIn(sys.byteorder, ("little", "big")) 419 self.assertIsInstance(sys.builtin_module_names, tuple) 420 self.assertIsInstance(sys.copyright, str) 421 self.assertIsInstance(sys.exec_prefix, str) 422 self.assertIsInstance(sys.executable, str) 423 self.assertEqual(len(sys.float_info), 11) 424 self.assertEqual(sys.float_info.radix, 2) 425 self.assertEqual(len(sys.int_info), 2) 426 self.assertTrue(sys.int_info.bits_per_digit % 5 == 0) 427 self.assertTrue(sys.int_info.sizeof_digit >= 1) 428 self.assertEqual(type(sys.int_info.bits_per_digit), int) 429 self.assertEqual(type(sys.int_info.sizeof_digit), int) 430 self.assertIsInstance(sys.hexversion, int) 431 432 self.assertEqual(len(sys.hash_info), 5) 433 self.assertLess(sys.hash_info.modulus, 2**sys.hash_info.width) 434 # sys.hash_info.modulus should be a prime; we do a quick 435 # probable primality test (doesn't exclude the possibility of 436 # a Carmichael number) 437 for x in range(1, 100): 438 self.assertEqual( 439 pow(x, sys.hash_info.modulus-1, sys.hash_info.modulus), 440 1, 441 "sys.hash_info.modulus {} is a non-prime".format( 442 sys.hash_info.modulus) 443 ) 444 self.assertIsInstance(sys.hash_info.inf, int) 445 self.assertIsInstance(sys.hash_info.nan, int) 446 self.assertIsInstance(sys.hash_info.imag, int) 447 448 self.assertIsInstance(sys.maxsize, int) 449 self.assertIsInstance(sys.maxunicode, int) 450 self.assertIsInstance(sys.platform, str) 451 self.assertIsInstance(sys.prefix, str) 452 self.assertIsInstance(sys.version, str) 453 vi = sys.version_info 454 self.assertIsInstance(vi[:], tuple) 455 self.assertEqual(len(vi), 5) 456 self.assertIsInstance(vi[0], int) 457 self.assertIsInstance(vi[1], int) 458 self.assertIsInstance(vi[2], int) 459 self.assertIn(vi[3], ("alpha", "beta", "candidate", "final")) 460 self.assertIsInstance(vi[4], int) 461 self.assertIsInstance(vi.major, int) 462 self.assertIsInstance(vi.minor, int) 463 self.assertIsInstance(vi.micro, int) 464 self.assertIn(vi.releaselevel, ("alpha", "beta", "candidate", "final")) 465 self.assertIsInstance(vi.serial, int) 466 self.assertEqual(vi[0], vi.major) 467 self.assertEqual(vi[1], vi.minor) 468 self.assertEqual(vi[2], vi.micro) 469 self.assertEqual(vi[3], vi.releaselevel) 470 self.assertEqual(vi[4], vi.serial) 471 self.assertTrue(vi > (1,0,0)) 472 self.assertIsInstance(sys.float_repr_style, str) 473 self.assertIn(sys.float_repr_style, ('short', 'legacy')) 474 if not sys.platform.startswith('win'): 475 self.assertIsInstance(sys.abiflags, str) 476 477 @unittest.skipUnless(hasattr(sys, 'thread_info'), 478 'Threading required for this test.') 479 def test_thread_info(self): 480 info = sys.thread_info 481 self.assertEqual(len(info), 3) 482 self.assertIn(info.name, ('nt', 'os2', 'pthread', 'solaris', None)) 483 self.assertIn(info.lock, ('semaphore', 'mutex+cond', None)) 484 485 def test_43581(self): 486 # Can't use sys.stdout, as this is a StringIO object when 487 # the test runs under regrtest. 488 self.assertEqual(sys.__stdout__.encoding, sys.__stderr__.encoding) 489 490 def test_intern(self): 491 global numruns 492 numruns += 1 493 self.assertRaises(TypeError, sys.intern) 494 s = "never interned before" + str(numruns) 495 self.assertTrue(sys.intern(s) is s) 496 s2 = s.swapcase().swapcase() 497 self.assertTrue(sys.intern(s2) is s) 498 499 # Subclasses of string can't be interned, because they 500 # provide too much opportunity for insane things to happen. 501 # We don't want them in the interned dict and if they aren't 502 # actually interned, we don't want to create the appearance 503 # that they are by allowing intern() to succeed. 504 class S(str): 505 def __hash__(self): 506 return 123 507 508 self.assertRaises(TypeError, sys.intern, S("abc")) 509 510 def test_sys_flags(self): 511 self.assertTrue(sys.flags) 512 attrs = ("debug", 513 "inspect", "interactive", "optimize", "dont_write_bytecode", 514 "no_user_site", "no_site", "ignore_environment", "verbose", 515 "bytes_warning", "quiet") 516 for attr in attrs: 517 self.assertTrue(hasattr(sys.flags, attr), attr) 518 self.assertEqual(type(getattr(sys.flags, attr)), int, attr) 519 self.assertTrue(repr(sys.flags)) 520 self.assertEqual(len(sys.flags), len(attrs)) 521 522 def test_clear_type_cache(self): 523 sys._clear_type_cache() 524 525 def test_ioencoding(self): 526 env = dict(os.environ) 527 528 # Test character: cent sign, encoded as 0x4A (ASCII J) in CP424, 529 # not representable in ASCII. 530 531 env["PYTHONIOENCODING"] = "cp424" 532 p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'], 533 stdout = subprocess.PIPE, env=env) 534 out = p.communicate()[0].strip() 535 self.assertEqual(out, "\xa2\n".encode("cp424")) 536 537 env["PYTHONIOENCODING"] = "ascii:replace" 538 p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'], 539 stdout = subprocess.PIPE, env=env) 540 out = p.communicate()[0].strip() 541 self.assertEqual(out, b'?') 542 543 def test_executable(self): 544 # Issue #7774: Ensure that sys.executable is an empty string if argv[0] 545 # has been set to an non existent program name and Python is unable to 546 # retrieve the real program name 547 548 # For a normal installation, it should work without 'cwd' 549 # argument. For test runs in the build directory, see #7774. 550 python_dir = os.path.dirname(os.path.realpath(sys.executable)) 551 p = subprocess.Popen( 552 ["nonexistent", "-c", 553 'import sys; print(sys.executable.encode("ascii", "backslashreplace"))'], 554 executable=sys.executable, stdout=subprocess.PIPE, cwd=python_dir) 555 stdout = p.communicate()[0] 556 executable = stdout.strip().decode("ASCII") 557 p.wait() 558 self.assertIn(executable, ["b''", repr(sys.executable.encode("ascii", "backslashreplace"))]) 559 560 def check_fsencoding(self, fs_encoding, expected=None): 561 self.assertIsNotNone(fs_encoding) 562 codecs.lookup(fs_encoding) 563 if expected: 564 self.assertEqual(fs_encoding, expected) 565 566 def test_getfilesystemencoding(self): 567 fs_encoding = sys.getfilesystemencoding() 568 if sys.platform == 'darwin': 569 expected = 'utf-8' 570 elif sys.platform == 'win32': 571 expected = 'mbcs' 572 else: 573 expected = None 574 self.check_fsencoding(fs_encoding, expected) 575 576 577class SizeofTest(unittest.TestCase): 578 579 TPFLAGS_HAVE_GC = 1<<14 580 TPFLAGS_HEAPTYPE = 1<<9 581 582 def setUp(self): 583 self.c = len(struct.pack('c', b' ')) 584 self.H = len(struct.pack('H', 0)) 585 self.i = len(struct.pack('i', 0)) 586 self.l = len(struct.pack('l', 0)) 587 self.P = len(struct.pack('P', 0)) 588 # due to missing size_t information from struct, it is assumed that 589 # sizeof(Py_ssize_t) = sizeof(void*) 590 self.header = 'PP' 591 self.vheader = self.header + 'P' 592 if hasattr(sys, "gettotalrefcount"): 593 self.header += '2P' 594 self.vheader += '2P' 595 self.longdigit = sys.int_info.sizeof_digit 596 import _testcapi 597 self.gc_headsize = _testcapi.SIZEOF_PYGC_HEAD 598 self.file = open(test.support.TESTFN, 'wb') 599 600 def tearDown(self): 601 self.file.close() 602 test.support.unlink(test.support.TESTFN) 603 604 def check_sizeof(self, o, size): 605 result = sys.getsizeof(o) 606 # add GC header size 607 if ((type(o) == type) and (o.__flags__ & self.TPFLAGS_HEAPTYPE) or\ 608 ((type(o) != type) and (type(o).__flags__ & self.TPFLAGS_HAVE_GC))): 609 size += self.gc_headsize 610 msg = 'wrong size for %s: got %d, expected %d' \ 611 % (type(o), result, size) 612 self.assertEqual(result, size, msg) 613 614 def calcsize(self, fmt): 615 """Wrapper around struct.calcsize which enforces the alignment of the 616 end of a structure to the alignment requirement of pointer. 617 618 Note: This wrapper should only be used if a pointer member is included 619 and no member with a size larger than a pointer exists. 620 """ 621 return struct.calcsize(fmt + '0P') 622 623 def test_gc_head_size(self): 624 # Check that the gc header size is added to objects tracked by the gc. 625 h = self.header 626 vh = self.vheader 627 size = self.calcsize 628 gc_header_size = self.gc_headsize 629 # bool objects are not gc tracked 630 self.assertEqual(sys.getsizeof(True), size(vh) + self.longdigit) 631 # but lists are 632 self.assertEqual(sys.getsizeof([]), size(vh + 'PP') + gc_header_size) 633 634 def test_default(self): 635 h = self.header 636 vh = self.vheader 637 size = self.calcsize 638 self.assertEqual(sys.getsizeof(True), size(vh) + self.longdigit) 639 self.assertEqual(sys.getsizeof(True, -1), size(vh) + self.longdigit) 640 641 def test_objecttypes(self): 642 # check all types defined in Objects/ 643 h = self.header 644 vh = self.vheader 645 size = self.calcsize 646 check = self.check_sizeof 647 # bool 648 check(True, size(vh) + self.longdigit) 649 # buffer 650 # XXX 651 # builtin_function_or_method 652 check(len, size(h + '3P')) 653 # bytearray 654 samples = [b'', b'u'*100000] 655 for sample in samples: 656 x = bytearray(sample) 657 check(x, size(vh + 'iPP') + x.__alloc__() * self.c) 658 # bytearray_iterator 659 check(iter(bytearray()), size(h + 'PP')) 660 # cell 661 def get_cell(): 662 x = 42 663 def inner(): 664 return x 665 return inner 666 check(get_cell().__closure__[0], size(h + 'P')) 667 # code 668 check(get_cell().__code__, size(h + '5i8Pi3P')) 669 # complex 670 check(complex(0,1), size(h + '2d')) 671 # method_descriptor (descriptor object) 672 check(str.lower, size(h + '2PP')) 673 # classmethod_descriptor (descriptor object) 674 # XXX 675 # member_descriptor (descriptor object) 676 import datetime 677 check(datetime.timedelta.days, size(h + '2PP')) 678 # getset_descriptor (descriptor object) 679 import collections 680 check(collections.defaultdict.default_factory, size(h + '2PP')) 681 # wrapper_descriptor (descriptor object) 682 check(int.__add__, size(h + '2P2P')) 683 # method-wrapper (descriptor object) 684 check({}.__iter__, size(h + '2P')) 685 # dict 686 check({}, size(h + '3P2P' + 8*'P2P')) 687 longdict = {1:1, 2:2, 3:3, 4:4, 5:5, 6:6, 7:7, 8:8} 688 check(longdict, size(h + '3P2P' + 8*'P2P') + 16*size('P2P')) 689 # dictionary-keyiterator 690 check({}.keys(), size(h + 'P')) 691 # dictionary-valueiterator 692 check({}.values(), size(h + 'P')) 693 # dictionary-itemiterator 694 check({}.items(), size(h + 'P')) 695 # dictproxy 696 class C(object): pass 697 check(C.__dict__, size(h + 'P')) 698 # BaseException 699 check(BaseException(), size(h + '5P')) 700 # UnicodeEncodeError 701 check(UnicodeEncodeError("", "", 0, 0, ""), size(h + '5P 2P2PP')) 702 # UnicodeDecodeError 703 # XXX 704# check(UnicodeDecodeError("", "", 0, 0, ""), size(h + '5P2PP')) 705 # UnicodeTranslateError 706 check(UnicodeTranslateError("", 0, 1, ""), size(h + '5P 2P2PP')) 707 # ellipses 708 check(Ellipsis, size(h + '')) 709 # EncodingMap 710 import codecs, encodings.iso8859_3 711 x = codecs.charmap_build(encodings.iso8859_3.decoding_table) 712 check(x, size(h + '32B2iB')) 713 # enumerate 714 check(enumerate([]), size(h + 'l3P')) 715 # reverse 716 check(reversed(''), size(h + 'PP')) 717 # float 718 check(float(0), size(h + 'd')) 719 # sys.floatinfo 720 check(sys.float_info, size(vh) + self.P * len(sys.float_info)) 721 # frame 722 import inspect 723 CO_MAXBLOCKS = 20 724 x = inspect.currentframe() 725 ncells = len(x.f_code.co_cellvars) 726 nfrees = len(x.f_code.co_freevars) 727 extras = x.f_code.co_stacksize + x.f_code.co_nlocals +\ 728 ncells + nfrees - 1 729 check(x, size(vh + '12P3i' + CO_MAXBLOCKS*'3i' + 'P' + extras*'P')) 730 # function 731 def func(): pass 732 check(func, size(h + '11P')) 733 class c(): 734 @staticmethod 735 def foo(): 736 pass 737 @classmethod 738 def bar(cls): 739 pass 740 # staticmethod 741 check(foo, size(h + 'P')) 742 # classmethod 743 check(bar, size(h + 'P')) 744 # generator 745 def get_gen(): yield 1 746 check(get_gen(), size(h + 'Pi2P')) 747 # iterator 748 check(iter('abc'), size(h + 'lP')) 749 # callable-iterator 750 import re 751 check(re.finditer('',''), size(h + '2P')) 752 # list 753 samples = [[], [1,2,3], ['1', '2', '3']] 754 for sample in samples: 755 check(sample, size(vh + 'PP') + len(sample)*self.P) 756 # sortwrapper (list) 757 # XXX 758 # cmpwrapper (list) 759 # XXX 760 # listiterator (list) 761 check(iter([]), size(h + 'lP')) 762 # listreverseiterator (list) 763 check(reversed([]), size(h + 'lP')) 764 # long 765 check(0, size(vh)) 766 check(1, size(vh) + self.longdigit) 767 check(-1, size(vh) + self.longdigit) 768 PyLong_BASE = 2**sys.int_info.bits_per_digit 769 check(int(PyLong_BASE), size(vh) + 2*self.longdigit) 770 check(int(PyLong_BASE**2-1), size(vh) + 2*self.longdigit) 771 check(int(PyLong_BASE**2), size(vh) + 3*self.longdigit) 772 # memory 773 check(memoryview(b''), size(h + 'PP2P2i7P')) 774 # module 775 check(unittest, size(h + '3P')) 776 # None 777 check(None, size(h + '')) 778 # NotImplementedType 779 check(NotImplemented, size(h)) 780 # object 781 check(object(), size(h + '')) 782 # property (descriptor object) 783 class C(object): 784 def getx(self): return self.__x 785 def setx(self, value): self.__x = value 786 def delx(self): del self.__x 787 x = property(getx, setx, delx, "") 788 check(x, size(h + '4Pi')) 789 # PyCapsule 790 # XXX 791 # rangeiterator 792 check(iter(range(1)), size(h + '4l')) 793 # reverse 794 check(reversed(''), size(h + 'PP')) 795 # range 796 check(range(1), size(h + '4P')) 797 check(range(66000), size(h + '4P')) 798 # set 799 # frozenset 800 PySet_MINSIZE = 8 801 samples = [[], range(10), range(50)] 802 s = size(h + '3P2P' + PySet_MINSIZE*'lP' + 'lP') 803 for sample in samples: 804 minused = len(sample) 805 if minused == 0: tmp = 1 806 # the computation of minused is actually a bit more complicated 807 # but this suffices for the sizeof test 808 minused = minused*2 809 newsize = PySet_MINSIZE 810 while newsize <= minused: 811 newsize = newsize << 1 812 if newsize <= 8: 813 check(set(sample), s) 814 check(frozenset(sample), s) 815 else: 816 check(set(sample), s + newsize*struct.calcsize('lP')) 817 check(frozenset(sample), s + newsize*struct.calcsize('lP')) 818 # setiterator 819 check(iter(set()), size(h + 'P3P')) 820 # slice 821 check(slice(0), size(h + '3P')) 822 # super 823 check(super(int), size(h + '3P')) 824 # tuple 825 check((), size(vh)) 826 check((1,2,3), size(vh) + 3*self.P) 827 # type 828 # (PyTypeObject + PyNumberMethods + PyMappingMethods + 829 # PySequenceMethods + PyBufferProcs) 830 s = size(vh + 'P2P15Pl4PP9PP11PI') + size('16Pi17P 3P 10P 2P 2P') 831 check(int, s) 832 # class 833 class newstyleclass(object): pass 834 check(newstyleclass, s) 835 # unicode 836 usize = len('\0'.encode('unicode-internal')) 837 samples = ['', '1'*100] 838 # we need to test for both sizes, because we don't know if the string 839 # has been cached 840 for s in samples: 841 basicsize = size(h + 'PPPiP') + usize * (len(s) + 1) 842 check(s, basicsize) 843 # weakref 844 import weakref 845 check(weakref.ref(int), size(h + '2Pl2P')) 846 # weakproxy 847 # XXX 848 # weakcallableproxy 849 check(weakref.proxy(int), size(h + '2Pl2P')) 850 851 def test_pythontypes(self): 852 # check all types defined in Python/ 853 h = self.header 854 vh = self.vheader 855 size = self.calcsize 856 check = self.check_sizeof 857 # _ast.AST 858 import _ast 859 check(_ast.AST(), size(h + '')) 860 # imp.NullImporter 861 import imp 862 check(imp.NullImporter(self.file.name), size(h + '')) 863 try: 864 raise TypeError 865 except TypeError: 866 tb = sys.exc_info()[2] 867 # traceback 868 if tb != None: 869 check(tb, size(h + '2P2i')) 870 # symtable entry 871 # XXX 872 # sys.flags 873 check(sys.flags, size(vh) + self.P * len(sys.flags)) 874 875 876def test_main(): 877 test.support.run_unittest(SysModuleTest, SizeofTest) 878 879if __name__ == "__main__": 880 test_main() 881