AppPkg/Applications/Python/Python-2.7.2/Lib/test/test_tempfile.py

   1 # tempfile.py unit tests.
   2 import tempfile
   3 import os
   4 import sys
   5 import re
   6 import warnings
   7
   8 import unittest
   9 from test import test_support
  10
  11 warnings.filterwarnings("ignore",
  12                         category=RuntimeWarning,
  13                         message="mktemp", module=__name__)
  14
  15 if hasattr(os, 'stat'):
  16     import stat
  17     has_stat = 1
  18 else:
  19     has_stat = 0
  20
  21 has_textmode = (tempfile._text_openflags != tempfile._bin_openflags)
  22 has_spawnl = hasattr(os, 'spawnl')
  23
  24 # TEST_FILES may need to be tweaked for systems depending on the maximum
  25 # number of files that can be opened at one time (see ulimit -n)
  26 if sys.platform in ('openbsd3', 'openbsd4'):
  27     TEST_FILES = 48
  28 else:
  29     TEST_FILES = 100
  30
  31 # This is organized as one test for each chunk of code in tempfile.py,
  32 # in order of their appearance in the file.  Testing which requires
  33 # threads is not done here.
  34
  35 # Common functionality.
  36 class TC(unittest.TestCase):
  37
  38     str_check = re.compile(r"[a-zA-Z0-9_-]{6}$")
  39
  40     def failOnException(self, what, ei=None):
  41         if ei is None:
  42             ei = sys.exc_info()
  43         self.fail("%s raised %s: %s" % (what, ei[0], ei[1]))
  44
  45     def nameCheck(self, name, dir, pre, suf):
  46         (ndir, nbase) = os.path.split(name)
  47         npre  = nbase[:len(pre)]
  48         nsuf  = nbase[len(nbase)-len(suf):]
  49
  50         # check for equality of the absolute paths!
  51         self.assertEqual(os.path.abspath(ndir), os.path.abspath(dir),
  52                          "file '%s' not in directory '%s'" % (name, dir))
  53         self.assertEqual(npre, pre,
  54                          "file '%s' does not begin with '%s'" % (nbase, pre))
  55         self.assertEqual(nsuf, suf,
  56                          "file '%s' does not end with '%s'" % (nbase, suf))
  57
  58         nbase = nbase[len(pre):len(nbase)-len(suf)]
  59         self.assertTrue(self.str_check.match(nbase),
  60                      "random string '%s' does not match /^[a-zA-Z0-9_-]{6}$/"
  61                      % nbase)
  62
  63 test_classes = []
  64
  65 class test_exports(TC):
  66     def test_exports(self):
  67         # There are no surprising symbols in the tempfile module
  68         dict = tempfile.__dict__
  69
  70         expected = {
  71             "NamedTemporaryFile" : 1,
  72             "TemporaryFile" : 1,
  73             "mkstemp" : 1,
  74             "mkdtemp" : 1,
  75             "mktemp" : 1,
  76             "TMP_MAX" : 1,
  77             "gettempprefix" : 1,
  78             "gettempdir" : 1,
  79             "tempdir" : 1,
  80             "template" : 1,
  81             "SpooledTemporaryFile" : 1
  82         }
  83
  84         unexp = []
  85         for key in dict:
  86             if key[0] != '_' and key not in expected:
  87                 unexp.append(key)
  88         self.assertTrue(len(unexp) == 0,
  89                         "unexpected keys: %s" % unexp)
  90
  91 test_classes.append(test_exports)
  92
  93
  94 class test__RandomNameSequence(TC):
  95     """Test the internal iterator object _RandomNameSequence."""
  96
  97     def setUp(self):
  98         self.r = tempfile._RandomNameSequence()
  99
 100     def test_get_six_char_str(self):
 101         # _RandomNameSequence returns a six-character string
 102         s = self.r.next()
 103         self.nameCheck(s, '', '', '')
 104
 105     def test_many(self):
 106         # _RandomNameSequence returns no duplicate strings (stochastic)
 107
 108         dict = {}
 109         r = self.r
 110         for i in xrange(TEST_FILES):
 111             s = r.next()
 112             self.nameCheck(s, '', '', '')
 113             self.assertNotIn(s, dict)
 114             dict[s] = 1
 115
 116     def test_supports_iter(self):
 117         # _RandomNameSequence supports the iterator protocol
 118
 119         i = 0
 120         r = self.r
 121         try:
 122             for s in r:
 123                 i += 1
 124                 if i == 20:
 125                     break
 126         except:
 127             self.failOnException("iteration")
 128
 129 test_classes.append(test__RandomNameSequence)
 130
 131
 132 class test__candidate_tempdir_list(TC):
 133     """Test the internal function _candidate_tempdir_list."""
 134
 135     def test_nonempty_list(self):
 136         # _candidate_tempdir_list returns a nonempty list of strings
 137
 138         cand = tempfile._candidate_tempdir_list()
 139
 140         self.assertFalse(len(cand) == 0)
 141         for c in cand:
 142             self.assertIsInstance(c, basestring)
 143
 144     def test_wanted_dirs(self):
 145         # _candidate_tempdir_list contains the expected directories
 146
 147         # Make sure the interesting environment variables are all set.
 148         with test_support.EnvironmentVarGuard() as env:
 149             for envname in 'TMPDIR', 'TEMP', 'TMP':
 150                 dirname = os.getenv(envname)
 151                 if not dirname:
 152                     env[envname] = os.path.abspath(envname)
 153
 154             cand = tempfile._candidate_tempdir_list()
 155
 156             for envname in 'TMPDIR', 'TEMP', 'TMP':
 157                 dirname = os.getenv(envname)
 158                 if not dirname: raise ValueError
 159                 self.assertIn(dirname, cand)
 160
 161             try:
 162                 dirname = os.getcwd()
 163             except (AttributeError, os.error):
 164                 dirname = os.curdir
 165
 166             self.assertIn(dirname, cand)
 167
 168             # Not practical to try to verify the presence of OS-specific
 169             # paths in this list.
 170
 171 test_classes.append(test__candidate_tempdir_list)
 172
 173
 174 # We test _get_default_tempdir by testing gettempdir.
 175
 176
 177 class test__get_candidate_names(TC):
 178     """Test the internal function _get_candidate_names."""
 179
 180     def test_retval(self):
 181         # _get_candidate_names returns a _RandomNameSequence object
 182         obj = tempfile._get_candidate_names()
 183         self.assertIsInstance(obj, tempfile._RandomNameSequence)
 184
 185     def test_same_thing(self):
 186         # _get_candidate_names always returns the same object
 187         a = tempfile._get_candidate_names()
 188         b = tempfile._get_candidate_names()
 189
 190         self.assertTrue(a is b)
 191
 192 test_classes.append(test__get_candidate_names)
 193
 194
 195 class test__mkstemp_inner(TC):
 196     """Test the internal function _mkstemp_inner."""
 197
 198     class mkstemped:
 199         _bflags = tempfile._bin_openflags
 200         _tflags = tempfile._text_openflags
 201         _close = os.close
 202         _unlink = os.unlink
 203
 204         def __init__(self, dir, pre, suf, bin):
 205             if bin: flags = self._bflags
 206             else:   flags = self._tflags
 207
 208             (self.fd, self.name) = tempfile._mkstemp_inner(dir, pre, suf, flags)
 209
 210         def write(self, str):
 211             os.write(self.fd, str)
 212
 213         def __del__(self):
 214             self._close(self.fd)
 215             self._unlink(self.name)
 216
 217     def do_create(self, dir=None, pre="", suf="", bin=1):
 218         if dir is None:
 219             dir = tempfile.gettempdir()
 220         try:
 221             file = self.mkstemped(dir, pre, suf, bin)
 222         except:
 223             self.failOnException("_mkstemp_inner")
 224
 225         self.nameCheck(file.name, dir, pre, suf)
 226         return file
 227
 228     def test_basic(self):
 229         # _mkstemp_inner can create files
 230         self.do_create().write("blat")
 231         self.do_create(pre="a").write("blat")
 232         self.do_create(suf="b").write("blat")
 233         self.do_create(pre="a", suf="b").write("blat")
 234         self.do_create(pre="aa", suf=".txt").write("blat")
 235
 236     def test_basic_many(self):
 237         # _mkstemp_inner can create many files (stochastic)
 238         extant = range(TEST_FILES)
 239         for i in extant:
 240             extant[i] = self.do_create(pre="aa")
 241
 242     def test_choose_directory(self):
 243         # _mkstemp_inner can create files in a user-selected directory
 244         dir = tempfile.mkdtemp()
 245         try:
 246             self.do_create(dir=dir).write("blat")
 247         finally:
 248             os.rmdir(dir)
 249
 250     def test_file_mode(self):
 251         # _mkstemp_inner creates files with the proper mode
 252         if not has_stat:
 253             return            # ugh, can't use SkipTest.
 254
 255         file = self.do_create()
 256         mode = stat.S_IMODE(os.stat(file.name).st_mode)
 257         expected = 0600
 258         if sys.platform in ('win32', 'os2emx'):
 259             # There's no distinction among 'user', 'group' and 'world';
 260             # replicate the 'user' bits.
 261             user = expected >> 6
 262             expected = user * (1 + 8 + 64)
 263         self.assertEqual(mode, expected)
 264
 265     def test_noinherit(self):
 266         # _mkstemp_inner file handles are not inherited by child processes
 267         if not has_spawnl:
 268             return            # ugh, can't use SkipTest.
 269
 270         if test_support.verbose:
 271             v="v"
 272         else:
 273             v="q"
 274
 275         file = self.do_create()
 276         fd = "%d" % file.fd
 277
 278         try:
 279             me = __file__
 280         except NameError:
 281             me = sys.argv[0]
 282
 283         # We have to exec something, so that FD_CLOEXEC will take
 284         # effect.  The core of this test is therefore in
 285         # tf_inherit_check.py, which see.
 286         tester = os.path.join(os.path.dirname(os.path.abspath(me)),
 287                               "tf_inherit_check.py")
 288
 289         # On Windows a spawn* /path/ with embedded spaces shouldn't be quoted,
 290         # but an arg with embedded spaces should be decorated with double
 291         # quotes on each end
 292         if sys.platform in ('win32',):
 293             decorated = '"%s"' % sys.executable
 294             tester = '"%s"' % tester
 295         else:
 296             decorated = sys.executable
 297
 298         retval = os.spawnl(os.P_WAIT, sys.executable, decorated, tester, v, fd)
 299         self.assertFalse(retval < 0,
 300                     "child process caught fatal signal %d" % -retval)
 301         self.assertFalse(retval > 0, "child process reports failure %d"%retval)
 302
 303     def test_textmode(self):
 304         # _mkstemp_inner can create files in text mode
 305         if not has_textmode:
 306             return            # ugh, can't use SkipTest.
 307
 308         self.do_create(bin=0).write("blat\n")
 309         # XXX should test that the file really is a text file
 310
 311 test_classes.append(test__mkstemp_inner)
 312
 313
 314 class test_gettempprefix(TC):
 315     """Test gettempprefix()."""
 316
 317     def test_sane_template(self):
 318         # gettempprefix returns a nonempty prefix string
 319         p = tempfile.gettempprefix()
 320
 321         self.assertIsInstance(p, basestring)
 322         self.assertTrue(len(p) > 0)
 323
 324     def test_usable_template(self):
 325         # gettempprefix returns a usable prefix string
 326
 327         # Create a temp directory, avoiding use of the prefix.
 328         # Then attempt to create a file whose name is
 329         # prefix + 'xxxxxx.xxx' in that directory.
 330         p = tempfile.gettempprefix() + "xxxxxx.xxx"
 331         d = tempfile.mkdtemp(prefix="")
 332         try:
 333             p = os.path.join(d, p)
 334             try:
 335                 fd = os.open(p, os.O_RDWR | os.O_CREAT)
 336             except:
 337                 self.failOnException("os.open")
 338             os.close(fd)
 339             os.unlink(p)
 340         finally:
 341             os.rmdir(d)
 342
 343 test_classes.append(test_gettempprefix)
 344
 345
 346 class test_gettempdir(TC):
 347     """Test gettempdir()."""
 348
 349     def test_directory_exists(self):
 350         # gettempdir returns a directory which exists
 351
 352         dir = tempfile.gettempdir()
 353         self.assertTrue(os.path.isabs(dir) or dir == os.curdir,
 354                      "%s is not an absolute path" % dir)
 355         self.assertTrue(os.path.isdir(dir),
 356                      "%s is not a directory" % dir)
 357
 358     def test_directory_writable(self):
 359         # gettempdir returns a directory writable by the user
 360
 361         # sneaky: just instantiate a NamedTemporaryFile, which
 362         # defaults to writing into the directory returned by
 363         # gettempdir.
 364         try:
 365             file = tempfile.NamedTemporaryFile()
 366             file.write("blat")
 367             file.close()
 368         except:
 369             self.failOnException("create file in %s" % tempfile.gettempdir())
 370
 371     def test_same_thing(self):
 372         # gettempdir always returns the same object
 373         a = tempfile.gettempdir()
 374         b = tempfile.gettempdir()
 375
 376         self.assertTrue(a is b)
 377
 378 test_classes.append(test_gettempdir)
 379
 380
 381 class test_mkstemp(TC):
 382     """Test mkstemp()."""
 383
 384     def do_create(self, dir=None, pre="", suf=""):
 385         if dir is None:
 386             dir = tempfile.gettempdir()
 387         try:
 388             (fd, name) = tempfile.mkstemp(dir=dir, prefix=pre, suffix=suf)
 389             (ndir, nbase) = os.path.split(name)
 390             adir = os.path.abspath(dir)
 391             self.assertEqual(adir, ndir,
 392                 "Directory '%s' incorrectly returned as '%s'" % (adir, ndir))
 393         except:
 394             self.failOnException("mkstemp")
 395
 396         try:
 397             self.nameCheck(name, dir, pre, suf)
 398         finally:
 399             os.close(fd)
 400             os.unlink(name)
 401
 402     def test_basic(self):
 403         # mkstemp can create files
 404         self.do_create()
 405         self.do_create(pre="a")
 406         self.do_create(suf="b")
 407         self.do_create(pre="a", suf="b")
 408         self.do_create(pre="aa", suf=".txt")
 409         self.do_create(dir=".")
 410
 411     def test_choose_directory(self):
 412         # mkstemp can create directories in a user-selected directory
 413         dir = tempfile.mkdtemp()
 414         try:
 415             self.do_create(dir=dir)
 416         finally:
 417             os.rmdir(dir)
 418
 419 test_classes.append(test_mkstemp)
 420
 421
 422 class test_mkdtemp(TC):
 423     """Test mkdtemp()."""
 424
 425     def do_create(self, dir=None, pre="", suf=""):
 426         if dir is None:
 427             dir = tempfile.gettempdir()
 428         try:
 429             name = tempfile.mkdtemp(dir=dir, prefix=pre, suffix=suf)
 430         except:
 431             self.failOnException("mkdtemp")
 432
 433         try:
 434             self.nameCheck(name, dir, pre, suf)
 435             return name
 436         except:
 437             os.rmdir(name)
 438             raise
 439
 440     def test_basic(self):
 441         # mkdtemp can create directories
 442         os.rmdir(self.do_create())
 443         os.rmdir(self.do_create(pre="a"))
 444         os.rmdir(self.do_create(suf="b"))
 445         os.rmdir(self.do_create(pre="a", suf="b"))
 446         os.rmdir(self.do_create(pre="aa", suf=".txt"))
 447
 448     def test_basic_many(self):
 449         # mkdtemp can create many directories (stochastic)
 450         extant = range(TEST_FILES)
 451         try:
 452             for i in extant:
 453                 extant[i] = self.do_create(pre="aa")
 454         finally:
 455             for i in extant:
 456                 if(isinstance(i, basestring)):
 457                     os.rmdir(i)
 458
 459     def test_choose_directory(self):
 460         # mkdtemp can create directories in a user-selected directory
 461         dir = tempfile.mkdtemp()
 462         try:
 463             os.rmdir(self.do_create(dir=dir))
 464         finally:
 465             os.rmdir(dir)
 466
 467     def test_mode(self):
 468         # mkdtemp creates directories with the proper mode
 469         if not has_stat:
 470             return            # ugh, can't use SkipTest.
 471
 472         dir = self.do_create()
 473         try:
 474             mode = stat.S_IMODE(os.stat(dir).st_mode)
 475             mode &= 0777 # Mask off sticky bits inherited from /tmp
 476             expected = 0700
 477             if sys.platform in ('win32', 'os2emx'):
 478                 # There's no distinction among 'user', 'group' and 'world';
 479                 # replicate the 'user' bits.
 480                 user = expected >> 6
 481                 expected = user * (1 + 8 + 64)
 482             self.assertEqual(mode, expected)
 483         finally:
 484             os.rmdir(dir)
 485
 486 test_classes.append(test_mkdtemp)
 487
 488
 489 class test_mktemp(TC):
 490     """Test mktemp()."""
 491
 492     # For safety, all use of mktemp must occur in a private directory.
 493     # We must also suppress the RuntimeWarning it generates.
 494     def setUp(self):
 495         self.dir = tempfile.mkdtemp()
 496
 497     def tearDown(self):
 498         if self.dir:
 499             os.rmdir(self.dir)
 500             self.dir = None
 501
 502     class mktemped:
 503         _unlink = os.unlink
 504         _bflags = tempfile._bin_openflags
 505
 506         def __init__(self, dir, pre, suf):
 507             self.name = tempfile.mktemp(dir=dir, prefix=pre, suffix=suf)
 508             # Create the file.  This will raise an exception if it's
 509             # mysteriously appeared in the meanwhile.
 510             os.close(os.open(self.name, self._bflags, 0600))
 511
 512         def __del__(self):
 513             self._unlink(self.name)
 514
 515     def do_create(self, pre="", suf=""):
 516         try:
 517             file = self.mktemped(self.dir, pre, suf)
 518         except:
 519             self.failOnException("mktemp")
 520
 521         self.nameCheck(file.name, self.dir, pre, suf)
 522         return file
 523
 524     def test_basic(self):
 525         # mktemp can choose usable file names
 526         self.do_create()
 527         self.do_create(pre="a")
 528         self.do_create(suf="b")
 529         self.do_create(pre="a", suf="b")
 530         self.do_create(pre="aa", suf=".txt")
 531
 532     def test_many(self):
 533         # mktemp can choose many usable file names (stochastic)
 534         extant = range(TEST_FILES)
 535         for i in extant:
 536             extant[i] = self.do_create(pre="aa")
 537
 538 ##     def test_warning(self):
 539 ##         # mktemp issues a warning when used
 540 ##         warnings.filterwarnings("error",
 541 ##                                 category=RuntimeWarning,
 542 ##                                 message="mktemp")
 543 ##         self.assertRaises(RuntimeWarning,
 544 ##                           tempfile.mktemp, dir=self.dir)
 545
 546 test_classes.append(test_mktemp)
 547
 548
 549 # We test _TemporaryFileWrapper by testing NamedTemporaryFile.
 550
 551
 552 class test_NamedTemporaryFile(TC):
 553     """Test NamedTemporaryFile()."""
 554
 555     def do_create(self, dir=None, pre="", suf="", delete=True):
 556         if dir is None:
 557             dir = tempfile.gettempdir()
 558         try:
 559             file = tempfile.NamedTemporaryFile(dir=dir, prefix=pre, suffix=suf,
 560                                                delete=delete)
 561         except:
 562             self.failOnException("NamedTemporaryFile")
 563
 564         self.nameCheck(file.name, dir, pre, suf)
 565         return file
 566
 567
 568     def test_basic(self):
 569         # NamedTemporaryFile can create files
 570         self.do_create()
 571         self.do_create(pre="a")
 572         self.do_create(suf="b")
 573         self.do_create(pre="a", suf="b")
 574         self.do_create(pre="aa", suf=".txt")
 575
 576     def test_creates_named(self):
 577         # NamedTemporaryFile creates files with names
 578         f = tempfile.NamedTemporaryFile()
 579         self.assertTrue(os.path.exists(f.name),
 580                         "NamedTemporaryFile %s does not exist" % f.name)
 581
 582     def test_del_on_close(self):
 583         # A NamedTemporaryFile is deleted when closed
 584         dir = tempfile.mkdtemp()
 585         try:
 586             f = tempfile.NamedTemporaryFile(dir=dir)
 587             f.write('blat')
 588             f.close()
 589             self.assertFalse(os.path.exists(f.name),
 590                         "NamedTemporaryFile %s exists after close" % f.name)
 591         finally:
 592             os.rmdir(dir)
 593
 594     def test_dis_del_on_close(self):
 595         # Tests that delete-on-close can be disabled
 596         dir = tempfile.mkdtemp()
 597         tmp = None
 598         try:
 599             f = tempfile.NamedTemporaryFile(dir=dir, delete=False)
 600             tmp = f.name
 601             f.write('blat')
 602             f.close()
 603             self.assertTrue(os.path.exists(f.name),
 604                         "NamedTemporaryFile %s missing after close" % f.name)
 605         finally:
 606             if tmp is not None:
 607                 os.unlink(tmp)
 608             os.rmdir(dir)
 609
 610     def test_multiple_close(self):
 611         # A NamedTemporaryFile can be closed many times without error
 612         f = tempfile.NamedTemporaryFile()
 613         f.write('abc\n')
 614         f.close()
 615         try:
 616             f.close()
 617             f.close()
 618         except:
 619             self.failOnException("close")
 620
 621     def test_context_manager(self):
 622         # A NamedTemporaryFile can be used as a context manager
 623         with tempfile.NamedTemporaryFile() as f:
 624             self.assertTrue(os.path.exists(f.name))
 625         self.assertFalse(os.path.exists(f.name))
 626         def use_closed():
 627             with f:
 628                 pass
 629         self.assertRaises(ValueError, use_closed)
 630
 631     # How to test the mode and bufsize parameters?
 632
 633 test_classes.append(test_NamedTemporaryFile)
 634
 635 class test_SpooledTemporaryFile(TC):
 636     """Test SpooledTemporaryFile()."""
 637
 638     def do_create(self, max_size=0, dir=None, pre="", suf=""):
 639         if dir is None:
 640             dir = tempfile.gettempdir()
 641         try:
 642             file = tempfile.SpooledTemporaryFile(max_size=max_size, dir=dir, prefix=pre, suffix=suf)
 643         except:
 644             self.failOnException("SpooledTemporaryFile")
 645
 646         return file
 647
 648
 649     def test_basic(self):
 650         # SpooledTemporaryFile can create files
 651         f = self.do_create()
 652         self.assertFalse(f._rolled)
 653         f = self.do_create(max_size=100, pre="a", suf=".txt")
 654         self.assertFalse(f._rolled)
 655
 656     def test_del_on_close(self):
 657         # A SpooledTemporaryFile is deleted when closed
 658         dir = tempfile.mkdtemp()
 659         try:
 660             f = tempfile.SpooledTemporaryFile(max_size=10, dir=dir)
 661             self.assertFalse(f._rolled)
 662             f.write('blat ' * 5)
 663             self.assertTrue(f._rolled)
 664             filename = f.name
 665             f.close()
 666             self.assertFalse(os.path.exists(filename),
 667                         "SpooledTemporaryFile %s exists after close" % filename)
 668         finally:
 669             os.rmdir(dir)
 670
 671     def test_rewrite_small(self):
 672         # A SpooledTemporaryFile can be written to multiple within the max_size
 673         f = self.do_create(max_size=30)
 674         self.assertFalse(f._rolled)
 675         for i in range(5):
 676             f.seek(0, 0)
 677             f.write('x' * 20)
 678         self.assertFalse(f._rolled)
 679
 680     def test_write_sequential(self):
 681         # A SpooledTemporaryFile should hold exactly max_size bytes, and roll
 682         # over afterward
 683         f = self.do_create(max_size=30)
 684         self.assertFalse(f._rolled)
 685         f.write('x' * 20)
 686         self.assertFalse(f._rolled)
 687         f.write('x' * 10)
 688         self.assertFalse(f._rolled)
 689         f.write('x')
 690         self.assertTrue(f._rolled)
 691
 692     def test_writelines(self):
 693         # Verify writelines with a SpooledTemporaryFile
 694         f = self.do_create()
 695         f.writelines((b'x', b'y', b'z'))
 696         f.seek(0)
 697         buf = f.read()
 698         self.assertEqual(buf, b'xyz')
 699
 700     def test_writelines_sequential(self):
 701         # A SpooledTemporaryFile should hold exactly max_size bytes, and roll
 702         # over afterward
 703         f = self.do_create(max_size=35)
 704         f.writelines((b'x' * 20, b'x' * 10, b'x' * 5))
 705         self.assertFalse(f._rolled)
 706         f.write(b'x')
 707         self.assertTrue(f._rolled)
 708
 709     def test_sparse(self):
 710         # A SpooledTemporaryFile that is written late in the file will extend
 711         # when that occurs
 712         f = self.do_create(max_size=30)
 713         self.assertFalse(f._rolled)
 714         f.seek(100, 0)
 715         self.assertFalse(f._rolled)
 716         f.write('x')
 717         self.assertTrue(f._rolled)
 718
 719     def test_fileno(self):
 720         # A SpooledTemporaryFile should roll over to a real file on fileno()
 721         f = self.do_create(max_size=30)
 722         self.assertFalse(f._rolled)
 723         self.assertTrue(f.fileno() > 0)
 724         self.assertTrue(f._rolled)
 725
 726     def test_multiple_close_before_rollover(self):
 727         # A SpooledTemporaryFile can be closed many times without error
 728         f = tempfile.SpooledTemporaryFile()
 729         f.write('abc\n')
 730         self.assertFalse(f._rolled)
 731         f.close()
 732         try:
 733             f.close()
 734             f.close()
 735         except:
 736             self.failOnException("close")
 737
 738     def test_multiple_close_after_rollover(self):
 739         # A SpooledTemporaryFile can be closed many times without error
 740         f = tempfile.SpooledTemporaryFile(max_size=1)
 741         f.write('abc\n')
 742         self.assertTrue(f._rolled)
 743         f.close()
 744         try:
 745             f.close()
 746             f.close()
 747         except:
 748             self.failOnException("close")
 749
 750     def test_bound_methods(self):
 751         # It should be OK to steal a bound method from a SpooledTemporaryFile
 752         # and use it independently; when the file rolls over, those bound
 753         # methods should continue to function
 754         f = self.do_create(max_size=30)
 755         read = f.read
 756         write = f.write
 757         seek = f.seek
 758
 759         write("a" * 35)
 760         write("b" * 35)
 761         seek(0, 0)
 762         self.assertTrue(read(70) == 'a'*35 + 'b'*35)
 763
 764     def test_context_manager_before_rollover(self):
 765         # A SpooledTemporaryFile can be used as a context manager
 766         with tempfile.SpooledTemporaryFile(max_size=1) as f:
 767             self.assertFalse(f._rolled)
 768             self.assertFalse(f.closed)
 769         self.assertTrue(f.closed)
 770         def use_closed():
 771             with f:
 772                 pass
 773         self.assertRaises(ValueError, use_closed)
 774
 775     def test_context_manager_during_rollover(self):
 776         # A SpooledTemporaryFile can be used as a context manager
 777         with tempfile.SpooledTemporaryFile(max_size=1) as f:
 778             self.assertFalse(f._rolled)
 779             f.write('abc\n')
 780             f.flush()
 781             self.assertTrue(f._rolled)
 782             self.assertFalse(f.closed)
 783         self.assertTrue(f.closed)
 784         def use_closed():
 785             with f:
 786                 pass
 787         self.assertRaises(ValueError, use_closed)
 788
 789     def test_context_manager_after_rollover(self):
 790         # A SpooledTemporaryFile can be used as a context manager
 791         f = tempfile.SpooledTemporaryFile(max_size=1)
 792         f.write('abc\n')
 793         f.flush()
 794         self.assertTrue(f._rolled)
 795         with f:
 796             self.assertFalse(f.closed)
 797         self.assertTrue(f.closed)
 798         def use_closed():
 799             with f:
 800                 pass
 801         self.assertRaises(ValueError, use_closed)
 802
 803
 804 test_classes.append(test_SpooledTemporaryFile)
 805
 806
 807 class test_TemporaryFile(TC):
 808     """Test TemporaryFile()."""
 809
 810     def test_basic(self):
 811         # TemporaryFile can create files
 812         # No point in testing the name params - the file has no name.
 813         try:
 814             tempfile.TemporaryFile()
 815         except:
 816             self.failOnException("TemporaryFile")
 817
 818     def test_has_no_name(self):
 819         # TemporaryFile creates files with no names (on this system)
 820         dir = tempfile.mkdtemp()
 821         f = tempfile.TemporaryFile(dir=dir)
 822         f.write('blat')
 823
 824         # Sneaky: because this file has no name, it should not prevent
 825         # us from removing the directory it was created in.
 826         try:
 827             os.rmdir(dir)
 828         except:
 829             ei = sys.exc_info()
 830             # cleanup
 831             f.close()
 832             os.rmdir(dir)
 833             self.failOnException("rmdir", ei)
 834
 835     def test_multiple_close(self):
 836         # A TemporaryFile can be closed many times without error
 837         f = tempfile.TemporaryFile()
 838         f.write('abc\n')
 839         f.close()
 840         try:
 841             f.close()
 842             f.close()
 843         except:
 844             self.failOnException("close")
 845
 846     # How to test the mode and bufsize parameters?
 847
 848
 849 if tempfile.NamedTemporaryFile is not tempfile.TemporaryFile:
 850     test_classes.append(test_TemporaryFile)
 851
 852 def test_main():
 853     test_support.run_unittest(*test_classes)
 854
 855 if __name__ == "__main__":
 856     test_main()