text: import sys
  import os
  import marshal
  import importlib
  import importlib.util
  import struct
  import time
  import unittest
  import unittest.mock
  
  from test import support
  from test.support import import_helper
  from test.support import os_helper
  
  from zipfile import ZipFile, ZipInfo, ZIP_STORED, ZIP_DEFLATED
  
  import zipimport
  import linecache
  import doctest
  import inspect
  import io
  from traceback import extract_tb, extract_stack, print_tb
  try:
      import zlib
  except ImportError:
      zlib = None
  
  test_src = """\
  def get_name():
      return __name__
  def get_file():
      return __file__
  """
  test_co = compile(test_src, "<???>", "exec")
  raise_src = 'def do_raise(): raise TypeError\n'
  
  def make_pyc(co, mtime, size):
      data = marshal.dumps(co)
      if type(mtime) is type(0.0):
          # Mac mtimes need a bit of special casing
          if mtime < 0x7fffffff:
              mtime = int(mtime)
          else:
              mtime = int(-0x100000000 + int(mtime))
      pyc = (importlib.util.MAGIC_NUMBER +
          struct.pack("<iii", 0, int(mtime), size & 0xFFFFFFFF) + data)
      return pyc
  
  def module_path_to_dotted_name(path):
      return path.replace(os.sep, '.')
  
  NOW = time.time()
  test_pyc = make_pyc(test_co, NOW, len(test_src))
  
  
  TESTMOD = "ziptestmodule"
  TESTPACK = "ziptestpackage"
  TESTPACK2 = "ziptestpackage2"
  TEMP_DIR = os.path.abspath("junk95142")
  TEMP_ZIP = os.path.abspath("junk95142.zip")
  
  pyc_file = importlib.util.cache_from_source(TESTMOD + '.py')
  pyc_ext = '.pyc'
  
  
  class ImportHooksBaseTestCase(unittest.TestCase):
  
      def setUp(self):
          self.path = sys.path[:]
          self.meta_path = sys.meta_path[:]
          self.path_hooks = sys.path_hooks[:]
          sys.path_importer_cache.clear()
          self.modules_before = import_helper.modules_setup()
  
      def tearDown(self):
          sys.path[:] = self.path
          sys.meta_path[:] = self.meta_path
          sys.path_hooks[:] = self.path_hooks
          sys.path_importer_cache.clear()
          import_helper.modules_cleanup(*self.modules_before)
  
  
  class UncompressedZipImportTestCase(ImportHooksBaseTestCase):
  
      compression = ZIP_STORED
  
      def setUp(self):
          # We're reusing the zip archive path, so we must clear the
          # cached directory info and linecache.
          linecache.clearcache()
          zipimport._zip_directory_cache.clear()
          ImportHooksBaseTestCase.setUp(self)
  
      def makeTree(self, files, dirName=TEMP_DIR):
          # Create a filesystem based set of modules/packages
          # defined by files under the directory dirName.
          self.addCleanup(os_helper.rmtree, dirName)
  
          for name, (mtime, data) in files.items():
              path = os.path.join(dirName, name)
              if path[-1] == os.sep:
                  if not os.path.isdir(path):
                      os.makedirs(path)
              else:
                  dname = os.path.dirname(path)
                  if not os.path.isdir(dname):
                      os.makedirs(dname)
                  with open(path, 'wb') as fp:
                      fp.write(data)
  
      def makeZip(self, files, zipName=TEMP_ZIP, **kw):
          # Create a zip archive based set of modules/packages
          # defined by files in the zip file zipName.  If the
          # key 'stuff' exists in kw it is prepended to the archive.
          self.addCleanup(os_helper.unlink, zipName)
  
          with ZipFile(zipName, "w") as z:
              for name, (mtime, data) in files.items():
                  zinfo = ZipInfo(name, time.localtime(mtime))
                  zinfo.compress_type = self.compression
                  z.writestr(zinfo, data)
              comment = kw.get("comment", None)
              if comment is not None:
                  z.comment = comment
  
          stuff = kw.get("stuff", None)
          if stuff is not None:
              # Prepend 'stuff' to the start of the zipfile
              with open(zipName, "rb") as f:
                  data = f.read()
              with open(zipName, "wb") as f:
                  f.write(stuff)
                  f.write(data)
  
      def doTest(self, expected_ext, files, *modules, **kw):
          self.makeZip(files, **kw)
  
          sys.path.insert(0, TEMP_ZIP)
  
          mod = importlib.import_module(".".join(modules))
  
          call = kw.get('call')
          if call is not None:
              call(mod)
  
          if expected_ext:
              file = mod.get_file()
              self.assertEqual(file, os.path.join(TEMP_ZIP,
                                   *modules) + expected_ext)
  
      def testAFakeZlib(self):
          #
          # This could cause a stack overflow before: importing zlib.py
          # from a compressed archive would cause zlib to be imported
          # which would find zlib.py in the archive, which would... etc.
          #
          # This test *must* be executed first: it must be the first one
          # to trigger zipimport to import zlib (zipimport caches the
          # zlib.decompress function object, after which the problem being
          # tested here wouldn't be a problem anymore...
          # (Hence the 'A' in the test method name: to make it the first
          # item in a list sorted by name, like unittest.makeSuite() does.)
          #
          # This test fails on platforms on which the zlib module is
          # statically linked, but the problem it tests for can't
          # occur in that case (builtin modules are always found first),
          # so we'll simply skip it then. Bug #765456.
          #
          if "zlib" in sys.builtin_module_names:
              self.skipTest('zlib is a builtin module')
          if "zlib" in sys.modules:
              del sys.modules["zlib"]
          files = {"zlib.py": (NOW, test_src)}
          try:
              self.doTest(".py", files, "zlib")
          except ImportError:
              if self.compression != ZIP_DEFLATED:
                  self.fail("expected test to not raise ImportError")
          else:
              if self.compression != ZIP_STORED:
                  self.fail("expected test to raise ImportError")
  
      def testPy(self):
          files = {TESTMOD + ".py": (NOW, test_src)}
          self.doTest(".py", files, TESTMOD)
  
      def testPyc(self):
          files = {TESTMOD + pyc_ext: (NOW, test_pyc)}
          self.doTest(pyc_ext, files, TESTMOD)
  
      def testBoth(self):
          files = {TESTMOD + ".py": (NOW, test_src),
                   TESTMOD + pyc_ext: (NOW, test_pyc)}
          self.doTest(pyc_ext, files, TESTMOD)
  
      def testUncheckedHashBasedPyc(self):
          source = b"state = 'old'"
          source_hash = importlib.util.source_hash(source)
          bytecode = importlib._bootstrap_external._code_to_hash_pyc(
              compile(source, "???", "exec"),
              source_hash,
              False, # unchecked
          )
          files = {TESTMOD + ".py": (NOW, "state = 'new'"),
                   TESTMOD + ".pyc": (NOW - 20, bytecode)}
          def check(mod):
              self.assertEqual(mod.state, 'old')
          self.doTest(None, files, TESTMOD, call=check)
  
      @unittest.mock.patch('_imp.check_hash_based_pycs', 'always')
      def test_checked_hash_based_change_pyc(self):
          source = b"state = 'old'"
          source_hash = importlib.util.source_hash(source)
          bytecode = importlib._bootstrap_external._code_to_hash_pyc(
              compile(source, "???", "exec"),
              source_hash,
              False,
          )
          files = {TESTMOD + ".py": (NOW, "state = 'new'"),
                   TESTMOD + ".pyc": (NOW - 20, bytecode)}
          def check(mod):
              self.assertEqual(mod.state, 'new')
          self.doTest(None, files, TESTMOD, call=check)
  
      def testEmptyPy(self):
          files = {TESTMOD + ".py": (NOW, "")}
          self.doTest(None, files, TESTMOD)
  
      def testBadMagic(self):
          # make pyc magic word invalid, forcing loading from .py
          badmagic_pyc = bytearray(test_pyc)
          badmagic_pyc[0] ^= 0x04  # flip an arbitrary bit
          files = {TESTMOD + ".py": (NOW, test_src),
                   TESTMOD + pyc_ext: (NOW, badmagic_pyc)}
          self.doTest(".py", files, TESTMOD)
  
      def testBadMagic2(self):
          # make pyc magic word invalid, causing an ImportError
          badmagic_pyc = bytearray(test_pyc)
          badmagic_pyc[0] ^= 0x04  # flip an arbitrary bit
          files = {TESTMOD + pyc_ext: (NOW, badmagic_pyc)}
          try:
              self.doTest(".py", files, TESTMOD)
          except ImportError:
              pass
          else:
              self.fail("expected ImportError; import from bad pyc")
  
      def testBadMTime(self):
          badtime_pyc = bytearray(test_pyc)
          # flip the second bit -- not the first as that one isn't stored in the
          # .py's mtime in the zip archive.
          badtime_pyc[11] ^= 0x02
          files = {TESTMOD + ".py": (NOW, test_src),
                   TESTMOD + pyc_ext: (NOW, badtime_pyc)}
          self.doTest(".py", files, TESTMOD)
  
      def testPackage(self):
          packdir = TESTPACK + os.sep
          files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc),
                   packdir + TESTMOD + pyc_ext: (NOW, test_pyc)}
          self.doTest(pyc_ext, files, TESTPACK, TESTMOD)
  
      def testSubPackage(self):
          # Test that subpackages function when loaded from zip
          # archives.
          packdir = TESTPACK + os.sep
          packdir2 = packdir + TESTPACK2 + os.sep
          files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc),
                   packdir2 + "__init__" + pyc_ext: (NOW, test_pyc),
                   packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
          self.doTest(pyc_ext, files, TESTPACK, TESTPACK2, TESTMOD)
  
      def testSubNamespacePackage(self):
          # Test that implicit namespace subpackages function
          # when loaded from zip archives.
          packdir = TESTPACK + os.sep
          packdir2 = packdir + TESTPACK2 + os.sep
          # The first two files are just directory entries (so have no data).
          files = {packdir: (NOW, ""),
                   packdir2: (NOW, ""),
                   packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
          self.doTest(pyc_ext, files, TESTPACK, TESTPACK2, TESTMOD)
  
      def testMixedNamespacePackage(self):
          # Test implicit namespace packages spread between a
          # real filesystem and a zip archive.
          packdir = TESTPACK + os.sep
          packdir2 = packdir + TESTPACK2 + os.sep
          packdir3 = packdir2 + TESTPACK + '3' + os.sep
          files1 = {packdir: (NOW, ""),
                    packdir + TESTMOD + pyc_ext: (NOW, test_pyc),
                    packdir2: (NOW, ""),
                    packdir3: (NOW, ""),
                    packdir3 + TESTMOD + pyc_ext: (NOW, test_pyc),
                    packdir2 + TESTMOD + '3' + pyc_ext: (NOW, test_pyc),
                    packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
          files2 = {packdir: (NOW, ""),
                    packdir + TESTMOD + '2' + pyc_ext: (NOW, test_pyc),
                    packdir2: (NOW, ""),
                    packdir2 + TESTMOD + '2' + pyc_ext: (NOW, test_pyc),
                    packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
  
          zip1 = os.path.abspath("path1.zip")
          self.makeZip(files1, zip1)
  
          zip2 = TEMP_DIR
          self.makeTree(files2, zip2)
  
          # zip2 should override zip1.
          sys.path.insert(0, zip1)
          sys.path.insert(0, zip2)
  
          mod = importlib.import_module(TESTPACK)
  
          # if TESTPACK is functioning as a namespace pkg then
          # there should be two entries in the __path__.
          # First should be path2 and second path1.
          self.assertEqual(2, len(mod.__path__))
          p1, p2 = mod.__path__
          self.assertEqual(os.path.basename(TEMP_DIR), p1.split(os.sep)[-2])
          self.assertEqual("path1.zip", p2.split(os.sep)[-2])
  
          # packdir3 should import as a namespace package.
          # Its __path__ is an iterable of 1 element from zip1.
          mod = importlib.import_module(packdir3.replace(os.sep, '.')[:-1])
          self.assertEqual(1, len(mod.__path__))
          mpath = list(mod.__path__)[0].split('path1.zip' + os.sep)[1]
          self.assertEqual(packdir3[:-1], mpath)
  
          # TESTPACK/TESTMOD only exists in path1.
          mod = importlib.import_module('.'.join((TESTPACK, TESTMOD)))
          self.assertEqual("path1.zip", mod.__file__.split(os.sep)[-3])
  
          # And TESTPACK/(TESTMOD + '2') only exists in path2.
          mod = importlib.import_module('.'.join((TESTPACK, TESTMOD + '2')))
          self.assertEqual(os.path.basename(TEMP_DIR),
                           mod.__file__.split(os.sep)[-3])
  
          # One level deeper...
          subpkg = '.'.join((TESTPACK, TESTPACK2))
          mod = importlib.import_module(subpkg)
          self.assertEqual(2, len(mod.__path__))
          p1, p2 = mod.__path__
          self.assertEqual(os.path.basename(TEMP_DIR), p1.split(os.sep)[-3])
          self.assertEqual("path1.zip", p2.split(os.sep)[-3])
  
          # subpkg.TESTMOD exists in both zips should load from zip2.
          mod = importlib.import_module('.'.join((subpkg, TESTMOD)))
          self.assertEqual(os.path.basename(TEMP_DIR),
                           mod.__file__.split(os.sep)[-4])
  
          # subpkg.TESTMOD + '2' only exists in zip2.
          mod = importlib.import_module('.'.join((subpkg, TESTMOD + '2')))
          self.assertEqual(os.path.basename(TEMP_DIR),
                           mod.__file__.split(os.sep)[-4])
  
          # Finally subpkg.TESTMOD + '3' only exists in zip1.
          mod = importlib.import_module('.'.join((subpkg, TESTMOD + '3')))
          self.assertEqual('path1.zip', mod.__file__.split(os.sep)[-4])
  
      def testNamespacePackage(self):
          # Test implicit namespace packages spread between multiple zip
          # archives.
          packdir = TESTPACK + os.sep
          packdir2 = packdir + TESTPACK2 + os.sep
          packdir3 = packdir2 + TESTPACK + '3' + os.sep
          files1 = {packdir: (NOW, ""),
                    packdir + TESTMOD + pyc_ext: (NOW, test_pyc),
                    packdir2: (NOW, ""),
                    packdir3: (NOW, ""),
                    packdir3 + TESTMOD + pyc_ext: (NOW, test_pyc),
                    packdir2 + TESTMOD + '3' + pyc_ext: (NOW, test_pyc),
                    packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
          zip1 = os.path.abspath("path1.zip")
          self.makeZip(files1, zip1)
  
          files2 = {packdir: (NOW, ""),
                    packdir + TESTMOD + '2' + pyc_ext: (NOW, test_pyc),
                    packdir2: (NOW, ""),
                    packdir2 + TESTMOD + '2' + pyc_ext: (NOW, test_pyc),
                    packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
          zip2 = os.path.abspath("path2.zip")
          self.makeZip(files2, zip2)
  
          # zip2 should override zip1.
          sys.path.insert(0, zip1)
          sys.path.insert(0, zip2)
  
          mod = importlib.import_module(TESTPACK)
  
          # if TESTPACK is functioning as a namespace pkg then
          # there should be two entries in the __path__.
          # First should be path2 and second path1.
          self.assertEqual(2, len(mod.__path__))
          p1, p2 = mod.__path__
          self.assertEqual("path2.zip", p1.split(os.sep)[-2])
          self.assertEqual("path1.zip", p2.split(os.sep)[-2])
  
          # packdir3 should import as a namespace package.
          # Tts __path__ is an iterable of 1 element from zip1.
          mod = importlib.import_module(packdir3.replace(os.sep, '.')[:-1])
          self.assertEqual(1, len(mod.__path__))
          mpath = list(mod.__path__)[0].split('path1.zip' + os.sep)[1]
          self.assertEqual(packdir3[:-1], mpath)
  
          # TESTPACK/TESTMOD only exists in path1.
          mod = importlib.import_module('.'.join((TESTPACK, TESTMOD)))
          self.assertEqual("path1.zip", mod.__file__.split(os.sep)[-3])
  
          # And TESTPACK/(TESTMOD + '2') only exists in path2.
          mod = importlib.import_module('.'.join((TESTPACK, TESTMOD + '2')))
          self.assertEqual("path2.zip", mod.__file__.split(os.sep)[-3])
  
          # One level deeper...
          subpkg = '.'.join((TESTPACK, TESTPACK2))
          mod = importlib.import_module(subpkg)
          self.assertEqual(2, len(mod.__path__))
          p1, p2 = mod.__path__
          self.assertEqual("path2.zip", p1.split(os.sep)[-3])
          self.assertEqual("path1.zip", p2.split(os.sep)[-3])
  
          # subpkg.TESTMOD exists in both zips should load from zip2.
          mod = importlib.import_module('.'.join((subpkg, TESTMOD)))
          self.assertEqual('path2.zip', mod.__file__.split(os.sep)[-4])
  
          # subpkg.TESTMOD + '2' only exists in zip2.
          mod = importlib.import_module('.'.join((subpkg, TESTMOD + '2')))
          self.assertEqual('path2.zip', mod.__file__.split(os.sep)[-4])
  
          # Finally subpkg.TESTMOD + '3' only exists in zip1.
          mod = importlib.import_module('.'.join((subpkg, TESTMOD + '3')))
          self.assertEqual('path1.zip', mod.__file__.split(os.sep)[-4])
  
      def testZipImporterMethods(self):
          packdir = TESTPACK + os.sep
          packdir2 = packdir + TESTPACK2 + os.sep
          files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc),
                   packdir2 + "__init__" + pyc_ext: (NOW, test_pyc),
                   packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc),
                   "spam" + pyc_ext: (NOW, test_pyc)}
  
          self.addCleanup(os_helper.unlink, TEMP_ZIP)
          with ZipFile(TEMP_ZIP, "w") as z:
              for name, (mtime, data) in files.items():
                  zinfo = ZipInfo(name, time.localtime(mtime))
                  zinfo.compress_type = self.compression
                  zinfo.comment = b"spam"
                  z.writestr(zinfo, data)
  
          zi = zipimport.zipimporter(TEMP_ZIP)
          self.assertEqual(zi.archive, TEMP_ZIP)
          self.assertEqual(zi.is_package(TESTPACK), True)
  
          find_mod = zi.find_module('spam')
          self.assertIsNotNone(find_mod)
          self.assertIsInstance(find_mod, zipimport.zipimporter)
          self.assertFalse(find_mod.is_package('spam'))
          load_mod = find_mod.load_module('spam')
          self.assertEqual(find_mod.get_filename('spam'), load_mod.__file__)
  
          mod = zi.load_module(TESTPACK)
          self.assertEqual(zi.get_filename(TESTPACK), mod.__file__)
  
          existing_pack_path = importlib.import_module(TESTPACK).__path__[0]
          expected_path_path = os.path.join(TEMP_ZIP, TESTPACK)
          self.assertEqual(existing_pack_path, expected_path_path)
  
          self.assertEqual(zi.is_package(packdir + '__init__'), False)
          self.assertEqual(zi.is_package(packdir + TESTPACK2), True)
          self.assertEqual(zi.is_package(packdir2 + TESTMOD), False)
  
          mod_path = packdir2 + TESTMOD
          mod_name = module_path_to_dotted_name(mod_path)
          mod = importlib.import_module(mod_name)
          self.assertTrue(mod_name in sys.modules)
          self.assertEqual(zi.get_source(TESTPACK), None)
          self.assertEqual(zi.get_source(mod_path), None)
          self.assertEqual(zi.get_filename(mod_path), mod.__file__)
          # To pass in the module name instead of the path, we must use the
          # right importer
          loader = mod.__loader__
          self.assertEqual(loader.get_source(mod_name), None)
          self.assertEqual(loader.get_filename(mod_name), mod.__file__)
  
          # test prefix and archivepath members
          zi2 = zipimport.zipimporter(TEMP_ZIP + os.sep + TESTPACK)
          self.assertEqual(zi2.archive, TEMP_ZIP)
          self.assertEqual(zi2.prefix, TESTPACK + os.sep)
  
      def testZipImporterMethodsInSubDirectory(self):
          packdir = TESTPACK + os.sep
          packdir2 = packdir + TESTPACK2 + os.sep
          files = {packdir2 + "__init__" + pyc_ext: (NOW, test_pyc),
                   packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
  
          self.addCleanup(os_helper.unlink, TEMP_ZIP)
          with ZipFile(TEMP_ZIP, "w") as z:
              for name, (mtime, data) in files.items():
                  zinfo = ZipInfo(name, time.localtime(mtime))
                  zinfo.compress_type = self.compression
                  zinfo.comment = b"eggs"
                  z.writestr(zinfo, data)
  
          zi = zipimport.zipimporter(TEMP_ZIP + os.sep + packdir)
          self.assertEqual(zi.archive, TEMP_ZIP)
          self.assertEqual(zi.prefix, packdir)
          self.assertEqual(zi.is_package(TESTPACK2), True)
          mod = zi.load_module(TESTPACK2)
          self.assertEqual(zi.get_filename(TESTPACK2), mod.__file__)
  
          self.assertEqual(
              zi.is_package(TESTPACK2 + os.sep + '__init__'), False)
          self.assertEqual(
              zi.is_package(TESTPACK2 + os.sep + TESTMOD), False)
  
          pkg_path = TEMP_ZIP + os.sep + packdir + TESTPACK2
          zi2 = zipimport.zipimporter(pkg_path)
          find_mod_dotted = zi2.find_module(TESTMOD)
          self.assertIsNotNone(find_mod_dotted)
          self.assertIsInstance(find_mod_dotted, zipimport.zipimporter)
          self.assertFalse(zi2.is_package(TESTMOD))
          load_mod = find_mod_dotted.load_module(TESTMOD)
          self.assertEqual(
              find_mod_dotted.get_filename(TESTMOD), load_mod.__file__)
  
          mod_path = TESTPACK2 + os.sep + TESTMOD
          mod_name = module_path_to_dotted_name(mod_path)
          mod = importlib.import_module(mod_name)
          self.assertTrue(mod_name in sys.modules)
          self.assertEqual(zi.get_source(TESTPACK2), None)
          self.assertEqual(zi.get_source(mod_path), None)
          self.assertEqual(zi.get_filename(mod_path), mod.__file__)
          # To pass in the module name instead of the path, we must use the
          # right importer.
          loader = mod.__loader__
          self.assertEqual(loader.get_source(mod_name), None)
          self.assertEqual(loader.get_filename(mod_name), mod.__file__)
  
      def testGetData(self):
          self.addCleanup(os_helper.unlink, TEMP_ZIP)
          with ZipFile(TEMP_ZIP, "w") as z:
              z.compression = self.compression
              name = "testdata.dat"
              data = bytes(x for x in range(256))
              z.writestr(name, data)
  
          zi = zipimport.zipimporter(TEMP_ZIP)
          self.assertEqual(data, zi.get_data(name))
          self.assertIn('zipimporter object', repr(zi))
  
      def testImporterAttr(self):
          src = """if 1:  # indent hack
          def get_file():
              return __file__
          if __loader__.get_data("some.data") != b"some data":
              raise AssertionError("bad data")\n"""
          pyc = make_pyc(compile(src, "<???>", "exec"), NOW, len(src))
          files = {TESTMOD + pyc_ext: (NOW, pyc),
                   "some.data": (NOW, "some data")}
          self.doTest(pyc_ext, files, TESTMOD)
  
      def testDefaultOptimizationLevel(self):
          # zipimport should use the default optimization level (#28131)
          src = """if 1:  # indent hack
          def test(val):
              assert(val)
              return val\n"""
          files = {TESTMOD + '.py': (NOW, src)}
          self.makeZip(files)
          sys.path.insert(0, TEMP_ZIP)
          mod = importlib.import_module(TESTMOD)
          self.assertEqual(mod.test(1), 1)
          self.assertRaises(AssertionError, mod.test, False)
  
      def testImport_WithStuff(self):
          # try importing from a zipfile which contains additional
          # stuff at the beginning of the file
          files = {TESTMOD + ".py": (NOW, test_src)}
          self.doTest(".py", files, TESTMOD,
                      stuff=b"Some Stuff"*31)
  
      def assertModuleSource(self, module):
          self.assertEqual(inspect.getsource(module), test_src)
  
      def testGetSource(self):
          files = {TESTMOD + ".py": (NOW, test_src)}
          self.doTest(".py", files, TESTMOD, call=self.assertModuleSource)
  
      def testGetCompiledSource(self):
          pyc = make_pyc(compile(test_src, "<???>", "exec"), NOW, len(test_src))
          files = {TESTMOD + ".py": (NOW, test_src),
                   TESTMOD + pyc_ext: (NOW, pyc)}
          self.doTest(pyc_ext, files, TESTMOD, call=self.assertModuleSource)
  
      def runDoctest(self, callback):
          files = {TESTMOD + ".py": (NOW, test_src),
                   "xyz.txt": (NOW, ">>> log.append(True)\n")}
          self.doTest(".py", files, TESTMOD, call=callback)
  
      def doDoctestFile(self, module):
          log = []
          old_master, doctest.master = doctest.master, None
          try:
              doctest.testfile(
                  'xyz.txt', package=module, module_relative=True,
                  globs=locals()
              )
          finally:
              doctest.master = old_master
          self.assertEqual(log,[True])
  
      def testDoctestFile(self):
          self.runDoctest(self.doDoctestFile)
  
      def doDoctestSuite(self, module):
          log = []
          doctest.DocFileTest(
              'xyz.txt', package=module, module_relative=True,
              globs=locals()
          ).run()
          self.assertEqual(log,[True])
  
      def testDoctestSuite(self):
          self.runDoctest(self.doDoctestSuite)
  
      def doTraceback(self, module):
          try:
              module.do_raise()
          except:
              tb = sys.exc_info()[2].tb_next
  
              f,lno,n,line = extract_tb(tb, 1)[0]
              self.assertEqual(line, raise_src.strip())
  
              f,lno,n,line = extract_stack(tb.tb_frame, 1)[0]
              self.assertEqual(line, raise_src.strip())
  
              s = io.StringIO()
              print_tb(tb, 1, s)
              self.assertTrue(s.getvalue().endswith(raise_src))
          else:
              raise AssertionError("This ought to be impossible")
  
      def testTraceback(self):
          files = {TESTMOD + ".py": (NOW, raise_src)}
          self.doTest(None, files, TESTMOD, call=self.doTraceback)
  
      @unittest.skipIf(os_helper.TESTFN_UNENCODABLE is None,
                       "need an unencodable filename")
      def testUnencodable(self):
          filename = os_helper.TESTFN_UNENCODABLE + ".zip"
          self.addCleanup(os_helper.unlink, filename)
          with ZipFile(filename, "w") as z:
              zinfo = ZipInfo(TESTMOD + ".py", time.localtime(NOW))
              zinfo.compress_type = self.compression
              z.writestr(zinfo, test_src)
          zipimport.zipimporter(filename).load_module(TESTMOD)
  
      def testBytesPath(self):
          filename = os_helper.TESTFN + ".zip"
          self.addCleanup(os_helper.unlink, filename)
          with ZipFile(filename, "w") as z:
              zinfo = ZipInfo(TESTMOD + ".py", time.localtime(NOW))
              zinfo.compress_type = self.compression
              z.writestr(zinfo, test_src)
  
          zipimport.zipimporter(filename)
          zipimport.zipimporter(os.fsencode(filename))
          with self.assertRaises(TypeError):
              zipimport.zipimporter(bytearray(os.fsencode(filename)))
          with self.assertRaises(TypeError):
              zipimport.zipimporter(memoryview(os.fsencode(filename)))
  
      def testComment(self):
          files = {TESTMOD + ".py": (NOW, test_src)}
          self.doTest(".py", files, TESTMOD, comment=b"comment")
  
      def testBeginningCruftAndComment(self):
          files = {TESTMOD + ".py": (NOW, test_src)}
          self.doTest(".py", files, TESTMOD, stuff=b"cruft" * 64, comment=b"hi")
  
      def testLargestPossibleComment(self):
          files = {TESTMOD + ".py": (NOW, test_src)}
          self.doTest(".py", files, TESTMOD, comment=b"c" * ((1 << 16) - 1))
  
  
  @support.requires_zlib()
  class CompressedZipImportTestCase(UncompressedZipImportTestCase):
      compression = ZIP_DEFLATED
  
  
  class BadFileZipImportTestCase(unittest.TestCase):
      def assertZipFailure(self, filename):
          self.assertRaises(zipimport.ZipImportError,
                            zipimport.zipimporter, filename)
  
      def testNoFile(self):
          self.assertZipFailure('AdfjdkFJKDFJjdklfjs')
  
      def testEmptyFilename(self):
          self.assertZipFailure('')
  
      def testBadArgs(self):
          self.assertRaises(TypeError, zipimport.zipimporter, None)
          self.assertRaises(TypeError, zipimport.zipimporter, TESTMOD, kwd=None)
          self.assertRaises(TypeError, zipimport.zipimporter,
                            list(os.fsencode(TESTMOD)))
  
      def testFilenameTooLong(self):
          self.assertZipFailure('A' * 33000)
  
      def testEmptyFile(self):
          os_helper.unlink(TESTMOD)
          os_helper.create_empty_file(TESTMOD)
          self.assertZipFailure(TESTMOD)
  
      def testFileUnreadable(self):
          os_helper.unlink(TESTMOD)
          fd = os.open(TESTMOD, os.O_CREAT, 000)
          try:
              os.close(fd)
  
              with self.assertRaises(zipimport.ZipImportError) as cm:
                  zipimport.zipimporter(TESTMOD)
          finally:
              # If we leave "the read-only bit" set on Windows, nothing can
              # delete TESTMOD, and later tests suffer bogus failures.
              os.chmod(TESTMOD, 0o666)
              os_helper.unlink(TESTMOD)
  
      def testNotZipFile(self):
          os_helper.unlink(TESTMOD)
          fp = open(TESTMOD, 'w+')
          fp.write('a' * 22)
          fp.close()
          self.assertZipFailure(TESTMOD)
  
      # XXX: disabled until this works on Big-endian machines
      def _testBogusZipFile(self):
          os_helper.unlink(TESTMOD)
          fp = open(TESTMOD, 'w+')
          fp.write(struct.pack('=I', 0x06054B50))
          fp.write('a' * 18)
          fp.close()
          z = zipimport.zipimporter(TESTMOD)
  
          try:
              self.assertRaises(TypeError, z.find_module, None)
              self.assertRaises(TypeError, z.load_module, None)
              self.assertRaises(TypeError, z.is_package, None)
              self.assertRaises(TypeError, z.get_code, None)
              self.assertRaises(TypeError, z.get_data, None)
              self.assertRaises(TypeError, z.get_source, None)
  
              error = zipimport.ZipImportError
              self.assertEqual(z.find_module('abc'), None)
  
              self.assertRaises(error, z.load_module, 'abc')
              self.assertRaises(error, z.get_code, 'abc')
              self.assertRaises(OSError, z.get_data, 'abc')
              self.assertRaises(error, z.get_source, 'abc')
              self.assertRaises(error, z.is_package, 'abc')
          finally:
              zipimport._zip_directory_cache.clear()
  
  
  def test_main():
      try:
          support.run_unittest(
                UncompressedZipImportTestCase,
                CompressedZipImportTestCase,
                BadFileZipImportTestCase,
              )
      finally:
          os_helper.unlink(TESTMOD)
  
  if __name__ == "__main__":
      test_main()
  