624 lines
23 KiB
Python
624 lines
23 KiB
Python
import io
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import sys
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import os
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import marshal
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import imp
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import struct
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import time
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import unittest
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from test import test_support
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from test.test_importhooks import ImportHooksBaseTestCase, test_src, test_co
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# some tests can be ran even without zlib
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try:
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import zlib
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except ImportError:
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zlib = None
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from zipfile import ZipFile, ZipInfo, ZIP_STORED, ZIP_DEFLATED
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import zipimport
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import linecache
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import doctest
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import inspect
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import StringIO
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from traceback import extract_tb, extract_stack, print_tb
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raise_src = 'def do_raise(): raise TypeError\n'
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def make_pyc(co, mtime):
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data = marshal.dumps(co)
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if type(mtime) is type(0.0):
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# Mac mtimes need a bit of special casing
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if mtime < 0x7fffffff:
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mtime = int(mtime)
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else:
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mtime = int(-0x100000000L + long(mtime))
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pyc = imp.get_magic() + struct.pack("<i", int(mtime)) + data
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return pyc
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def module_path_to_dotted_name(path):
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return path.replace(os.sep, '.')
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NOW = time.time()
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test_pyc = make_pyc(test_co, NOW)
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if __debug__:
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pyc_ext = ".pyc"
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else:
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pyc_ext = ".pyo"
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TESTMOD = "ziptestmodule"
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TESTPACK = "ziptestpackage"
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TESTPACK2 = "ziptestpackage2"
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TEMP_ZIP = os.path.abspath("junk95142" + os.extsep + "zip")
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def _write_zip_package(zipname, files,
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data_to_prepend=b"", compression=ZIP_STORED):
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z = ZipFile(zipname, "w")
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try:
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for name, (mtime, data) in files.items():
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zinfo = ZipInfo(name, time.localtime(mtime))
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zinfo.compress_type = compression
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z.writestr(zinfo, data)
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finally:
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z.close()
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if data_to_prepend:
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# Prepend data to the start of the zipfile
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with open(zipname, "rb") as f:
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zip_data = f.read()
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with open(zipname, "wb") as f:
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f.write(data_to_prepend)
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f.write(zip_data)
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class UncompressedZipImportTestCase(ImportHooksBaseTestCase):
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compression = ZIP_STORED
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def setUp(self):
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# We're reusing the zip archive path, so we must clear the
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# cached directory info and linecache
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linecache.clearcache()
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zipimport._zip_directory_cache.clear()
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ImportHooksBaseTestCase.setUp(self)
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def doTest(self, expected_ext, files, *modules, **kw):
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_write_zip_package(TEMP_ZIP, files, data_to_prepend=kw.get("stuff"),
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compression=self.compression)
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try:
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sys.path.insert(0, TEMP_ZIP)
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mod = __import__(".".join(modules), globals(), locals(),
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["__dummy__"])
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call = kw.get('call')
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if call is not None:
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call(mod)
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if expected_ext:
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file = mod.get_file()
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self.assertEqual(file, os.path.join(TEMP_ZIP,
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*modules) + expected_ext)
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finally:
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os.remove(TEMP_ZIP)
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def testAFakeZlib(self):
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#
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# This could cause a stack overflow before: importing zlib.py
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# from a compressed archive would cause zlib to be imported
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# which would find zlib.py in the archive, which would... etc.
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#
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# This test *must* be executed first: it must be the first one
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# to trigger zipimport to import zlib (zipimport caches the
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# zlib.decompress function object, after which the problem being
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# tested here wouldn't be a problem anymore...
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# (Hence the 'A' in the test method name: to make it the first
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# item in a list sorted by name, like unittest.makeSuite() does.)
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#
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# This test fails on platforms on which the zlib module is
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# statically linked, but the problem it tests for can't
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# occur in that case (builtin modules are always found first),
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# so we'll simply skip it then. Bug #765456.
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#
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if "zlib" in sys.builtin_module_names:
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self.skipTest('zlib is a builtin module')
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if "zlib" in sys.modules:
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del sys.modules["zlib"]
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files = {"zlib.py": (NOW, test_src)}
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try:
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self.doTest(".py", files, "zlib")
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except ImportError:
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if self.compression != ZIP_DEFLATED:
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self.fail("expected test to not raise ImportError")
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else:
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if self.compression != ZIP_STORED:
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self.fail("expected test to raise ImportError")
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def testPy(self):
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files = {TESTMOD + ".py": (NOW, test_src)}
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self.doTest(".py", files, TESTMOD)
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def testPyc(self):
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files = {TESTMOD + pyc_ext: (NOW, test_pyc)}
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self.doTest(pyc_ext, files, TESTMOD)
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def testBoth(self):
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files = {TESTMOD + ".py": (NOW, test_src),
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TESTMOD + pyc_ext: (NOW, test_pyc)}
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self.doTest(pyc_ext, files, TESTMOD)
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def testEmptyPy(self):
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files = {TESTMOD + ".py": (NOW, "")}
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self.doTest(None, files, TESTMOD)
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def testBadMagic(self):
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# make pyc magic word invalid, forcing loading from .py
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m0 = ord(test_pyc[0])
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m0 ^= 0x04 # flip an arbitrary bit
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badmagic_pyc = chr(m0) + test_pyc[1:]
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files = {TESTMOD + ".py": (NOW, test_src),
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TESTMOD + pyc_ext: (NOW, badmagic_pyc)}
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self.doTest(".py", files, TESTMOD)
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def testBadMagic2(self):
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# make pyc magic word invalid, causing an ImportError
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m0 = ord(test_pyc[0])
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m0 ^= 0x04 # flip an arbitrary bit
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badmagic_pyc = chr(m0) + test_pyc[1:]
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files = {TESTMOD + pyc_ext: (NOW, badmagic_pyc)}
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try:
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self.doTest(".py", files, TESTMOD)
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except ImportError:
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pass
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else:
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self.fail("expected ImportError; import from bad pyc")
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def testBadMTime(self):
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t3 = ord(test_pyc[7])
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t3 ^= 0x02 # flip the second bit -- not the first as that one
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# isn't stored in the .py's mtime in the zip archive.
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badtime_pyc = test_pyc[:7] + chr(t3) + test_pyc[8:]
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files = {TESTMOD + ".py": (NOW, test_src),
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TESTMOD + pyc_ext: (NOW, badtime_pyc)}
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self.doTest(".py", files, TESTMOD)
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def testPackage(self):
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packdir = TESTPACK + os.sep
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files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc),
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packdir + TESTMOD + pyc_ext: (NOW, test_pyc)}
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self.doTest(pyc_ext, files, TESTPACK, TESTMOD)
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def testDeepPackage(self):
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packdir = TESTPACK + os.sep
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packdir2 = packdir + TESTPACK2 + os.sep
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files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc),
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packdir2 + "__init__" + pyc_ext: (NOW, test_pyc),
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packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
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self.doTest(pyc_ext, files, TESTPACK, TESTPACK2, TESTMOD)
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def testZipImporterMethods(self):
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packdir = TESTPACK + os.sep
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packdir2 = packdir + TESTPACK2 + os.sep
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files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc),
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packdir2 + "__init__" + pyc_ext: (NOW, test_pyc),
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packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
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z = ZipFile(TEMP_ZIP, "w")
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try:
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for name, (mtime, data) in files.items():
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zinfo = ZipInfo(name, time.localtime(mtime))
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zinfo.compress_type = self.compression
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z.writestr(zinfo, data)
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z.close()
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zi = zipimport.zipimporter(TEMP_ZIP)
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self.assertEqual(zi.archive, TEMP_ZIP)
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self.assertEqual(zi.is_package(TESTPACK), True)
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mod = zi.load_module(TESTPACK)
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self.assertEqual(zi.get_filename(TESTPACK), mod.__file__)
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self.assertEqual(zi.is_package(packdir + '__init__'), False)
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self.assertEqual(zi.is_package(packdir + TESTPACK2), True)
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self.assertEqual(zi.is_package(packdir2 + TESTMOD), False)
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mod_path = packdir2 + TESTMOD
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mod_name = module_path_to_dotted_name(mod_path)
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__import__(mod_name)
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mod = sys.modules[mod_name]
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self.assertEqual(zi.get_source(TESTPACK), None)
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self.assertEqual(zi.get_source(mod_path), None)
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self.assertEqual(zi.get_filename(mod_path), mod.__file__)
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# To pass in the module name instead of the path, we must use the right importer
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loader = mod.__loader__
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self.assertEqual(loader.get_source(mod_name), None)
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self.assertEqual(loader.get_filename(mod_name), mod.__file__)
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# test prefix and archivepath members
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zi2 = zipimport.zipimporter(TEMP_ZIP + os.sep + TESTPACK)
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self.assertEqual(zi2.archive, TEMP_ZIP)
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self.assertEqual(zi2.prefix, TESTPACK + os.sep)
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finally:
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z.close()
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os.remove(TEMP_ZIP)
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def testZipImporterMethodsInSubDirectory(self):
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packdir = TESTPACK + os.sep
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packdir2 = packdir + TESTPACK2 + os.sep
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files = {packdir2 + "__init__" + pyc_ext: (NOW, test_pyc),
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packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)}
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z = ZipFile(TEMP_ZIP, "w")
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try:
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for name, (mtime, data) in files.items():
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zinfo = ZipInfo(name, time.localtime(mtime))
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zinfo.compress_type = self.compression
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z.writestr(zinfo, data)
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z.close()
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zi = zipimport.zipimporter(TEMP_ZIP + os.sep + packdir)
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self.assertEqual(zi.archive, TEMP_ZIP)
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self.assertEqual(zi.prefix, packdir)
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self.assertEqual(zi.is_package(TESTPACK2), True)
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mod = zi.load_module(TESTPACK2)
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self.assertEqual(zi.get_filename(TESTPACK2), mod.__file__)
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self.assertEqual(zi.is_package(TESTPACK2 + os.sep + '__init__'), False)
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self.assertEqual(zi.is_package(TESTPACK2 + os.sep + TESTMOD), False)
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mod_path = TESTPACK2 + os.sep + TESTMOD
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mod_name = module_path_to_dotted_name(mod_path)
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__import__(mod_name)
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mod = sys.modules[mod_name]
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self.assertEqual(zi.get_source(TESTPACK2), None)
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self.assertEqual(zi.get_source(mod_path), None)
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self.assertEqual(zi.get_filename(mod_path), mod.__file__)
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# To pass in the module name instead of the path, we must use the right importer
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loader = mod.__loader__
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self.assertEqual(loader.get_source(mod_name), None)
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self.assertEqual(loader.get_filename(mod_name), mod.__file__)
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finally:
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z.close()
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os.remove(TEMP_ZIP)
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def testGetData(self):
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z = ZipFile(TEMP_ZIP, "w")
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z.compression = self.compression
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try:
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name = "testdata.dat"
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data = "".join([chr(x) for x in range(256)]) * 500
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z.writestr(name, data)
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z.close()
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zi = zipimport.zipimporter(TEMP_ZIP)
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self.assertEqual(data, zi.get_data(name))
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self.assertIn('zipimporter object', repr(zi))
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finally:
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z.close()
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os.remove(TEMP_ZIP)
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def testImporterAttr(self):
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src = """if 1: # indent hack
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def get_file():
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return __file__
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if __loader__.get_data("some.data") != "some data":
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raise AssertionError, "bad data"\n"""
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pyc = make_pyc(compile(src, "<???>", "exec"), NOW)
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files = {TESTMOD + pyc_ext: (NOW, pyc),
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"some.data": (NOW, "some data")}
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self.doTest(pyc_ext, files, TESTMOD)
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def testImport_WithStuff(self):
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# try importing from a zipfile which contains additional
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# stuff at the beginning of the file
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files = {TESTMOD + ".py": (NOW, test_src)}
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self.doTest(".py", files, TESTMOD,
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stuff="Some Stuff"*31)
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def assertModuleSource(self, module):
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self.assertEqual(inspect.getsource(module), test_src)
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def testGetSource(self):
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files = {TESTMOD + ".py": (NOW, test_src)}
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self.doTest(".py", files, TESTMOD, call=self.assertModuleSource)
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def testGetCompiledSource(self):
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pyc = make_pyc(compile(test_src, "<???>", "exec"), NOW)
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files = {TESTMOD + ".py": (NOW, test_src),
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TESTMOD + pyc_ext: (NOW, pyc)}
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self.doTest(pyc_ext, files, TESTMOD, call=self.assertModuleSource)
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def runDoctest(self, callback):
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files = {TESTMOD + ".py": (NOW, test_src),
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"xyz.txt": (NOW, ">>> log.append(True)\n")}
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self.doTest(".py", files, TESTMOD, call=callback)
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def doDoctestFile(self, module):
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log = []
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old_master, doctest.master = doctest.master, None
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try:
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doctest.testfile(
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'xyz.txt', package=module, module_relative=True,
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globs=locals()
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)
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finally:
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doctest.master = old_master
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self.assertEqual(log,[True])
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def testDoctestFile(self):
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self.runDoctest(self.doDoctestFile)
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def doDoctestSuite(self, module):
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log = []
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doctest.DocFileTest(
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'xyz.txt', package=module, module_relative=True,
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globs=locals()
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).run()
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self.assertEqual(log,[True])
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def testDoctestSuite(self):
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self.runDoctest(self.doDoctestSuite)
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def doTraceback(self, module):
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try:
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module.do_raise()
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except:
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tb = sys.exc_info()[2].tb_next
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f,lno,n,line = extract_tb(tb, 1)[0]
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self.assertEqual(line, raise_src.strip())
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f,lno,n,line = extract_stack(tb.tb_frame, 1)[0]
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self.assertEqual(line, raise_src.strip())
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s = StringIO.StringIO()
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print_tb(tb, 1, s)
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self.assertTrue(s.getvalue().endswith(raise_src))
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else:
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raise AssertionError("This ought to be impossible")
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def testTraceback(self):
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files = {TESTMOD + ".py": (NOW, raise_src)}
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self.doTest(None, files, TESTMOD, call=self.doTraceback)
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@unittest.skipUnless(zlib, "requires zlib")
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class CompressedZipImportTestCase(UncompressedZipImportTestCase):
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compression = ZIP_DEFLATED
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class ZipFileModifiedAfterImportTestCase(ImportHooksBaseTestCase):
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def setUp(self):
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zipimport._zip_directory_cache.clear()
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zipimport._zip_stat_cache.clear()
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# save sys.modules so we can unimport everything done by our tests.
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self._sys_modules_orig = dict(sys.modules)
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ImportHooksBaseTestCase.setUp(self)
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def tearDown(self):
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ImportHooksBaseTestCase.tearDown(self)
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# The closest we can come to un-importing our zipped up test modules.
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sys.modules.clear()
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sys.modules.update(self._sys_modules_orig)
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if os.path.exists(TEMP_ZIP):
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os.remove(TEMP_ZIP)
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def setUpZipFileModuleAndTestImports(self):
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# Create a .zip file to test with
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self.zipfile_path = TEMP_ZIP
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packdir = TESTPACK + os.sep
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files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc),
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packdir + TESTMOD + ".py": (NOW, "test_value = 38\n"),
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"ziptest_a.py": (NOW, "test_value = 23\n"),
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"ziptest_b.py": (NOW, "test_value = 42\n"),
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"ziptest_c.py": (NOW, "test_value = 1337\n")}
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_write_zip_package(self.zipfile_path, files)
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self.assertTrue(os.path.exists(self.zipfile_path))
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sys.path.insert(0, self.zipfile_path)
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self.testpack_testmod = TESTPACK + "." + TESTMOD
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with io.open(self.zipfile_path, "rb") as orig_zip_file:
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self.orig_zip_file_contents = orig_zip_file.read()
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# Import something out of the zipfile and confirm it is correct.
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testmod = __import__(self.testpack_testmod,
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globals(), locals(), ["__dummy__"])
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self.assertEqual(testmod.test_value, 38)
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del sys.modules[TESTPACK]
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del sys.modules[self.testpack_testmod]
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# Import something else out of the zipfile and confirm it is correct.
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ziptest_b = __import__("ziptest_b", globals(), locals(), ["test_value"])
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self.assertEqual(ziptest_b.test_value, 42)
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del sys.modules["ziptest_b"]
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def truncateAndFillZipWithNonZipGarbage(self):
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with io.open(self.zipfile_path, "wb") as byebye_valid_zip_file:
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byebye_valid_zip_file.write(b"Tear down this wall!\n"*1987)
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def restoreZipFileWithDifferentHeaderOffsets(self):
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"""Make it a valid zipfile with some garbage at the start."""
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# This alters all of the caches offsets within the file.
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with io.open(self.zipfile_path, "wb") as new_zip_file:
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new_zip_file.write(b"X"*1991) # The year Python was created.
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new_zip_file.write(self.orig_zip_file_contents)
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def testZipFileChangesAfterFirstImport(self):
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"""Alter the zip file after caching its index and try an import."""
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self.setUpZipFileModuleAndTestImports()
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# The above call cached the .zip table of contents during its tests.
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self.truncateAndFillZipWithNonZipGarbage()
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# Now that the zipfile has been replaced, import something else from it
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# which should fail as the file contents are now garbage.
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with self.assertRaises(ImportError):
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ziptest_a = __import__("ziptest_a", {}, {}, ["test_value"])
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# The code path used by the __import__ call is different than
|
|
# that used by import statements. Try these as well. Some of
|
|
# these may create new zipimporter instances. We need to
|
|
# function properly using the global zipimport caches
|
|
# regardless of how many zipimporter instances for the same
|
|
# .zip file exist.
|
|
with self.assertRaises(ImportError):
|
|
import ziptest_a
|
|
with self.assertRaises(ImportError):
|
|
from ziptest_a import test_value
|
|
with self.assertRaises(ImportError):
|
|
exec("from {} import {}".format(TESTPACK, TESTMOD), {})
|
|
|
|
# Alters all of the offsets within the file
|
|
self.restoreZipFileWithDifferentHeaderOffsets()
|
|
|
|
# Now that the zip file has been "restored" to a valid but different
|
|
# zipfile all zipimporter instances should *successfully* re-read the
|
|
# new file's end of file central index and be able to import again.
|
|
|
|
# Importing a submodule triggers a different import code path.
|
|
test_ns = {}
|
|
exec("import " + self.testpack_testmod, test_ns)
|
|
self.assertEqual(getattr(test_ns[TESTPACK], TESTMOD).test_value, 38)
|
|
test_ns = {}
|
|
exec("from {} import {}".format(TESTPACK, TESTMOD), test_ns)
|
|
self.assertEqual(test_ns[TESTMOD].test_value, 38)
|
|
|
|
ziptest_a = __import__("ziptest_a", {}, {}, ["test_value"])
|
|
self.assertEqual(ziptest_a.test_value, 23)
|
|
ziptest_c = __import__("ziptest_c", {}, {}, ["test_value"])
|
|
self.assertEqual(ziptest_c.test_value, 1337)
|
|
|
|
def testZipFileSubpackageImport(self):
|
|
"""Import via multiple sys.path entries into parts of the zip."""
|
|
self.setUpZipFileModuleAndTestImports()
|
|
# Put a subdirectory within the zip file into the import path.
|
|
sys.path.insert(0, self.zipfile_path + os.sep + TESTPACK)
|
|
|
|
testmod = __import__(TESTMOD, {}, {}, ["test_value"])
|
|
self.assertEqual(testmod.test_value, 38)
|
|
del sys.modules[TESTMOD]
|
|
test_ns = {}
|
|
exec("from {} import test_value".format(TESTMOD), test_ns)
|
|
self.assertEqual(test_ns["test_value"], 38)
|
|
del sys.modules[TESTMOD]
|
|
|
|
# Confirm that imports from the top level of the zip file
|
|
# (already in sys.path from the setup call above) still work.
|
|
ziptest_a = __import__("ziptest_a", {}, {}, ["test_value"])
|
|
self.assertEqual(ziptest_a.test_value, 23)
|
|
del sys.modules["ziptest_a"]
|
|
import ziptest_c
|
|
self.assertEqual(ziptest_c.test_value, 1337)
|
|
del sys.modules["ziptest_c"]
|
|
|
|
self.truncateAndFillZipWithNonZipGarbage()
|
|
# Imports should now fail.
|
|
with self.assertRaises(ImportError):
|
|
testmod = __import__(TESTMOD, {}, {}, ["test_value"])
|
|
with self.assertRaises(ImportError):
|
|
exec("from {} import test_value".format(TESTMOD), {})
|
|
with self.assertRaises(ImportError):
|
|
import ziptest_a
|
|
|
|
self.restoreZipFileWithDifferentHeaderOffsets()
|
|
# Imports should work again, the central directory TOC will be re-read.
|
|
testmod = __import__(TESTMOD, {}, {}, ["test_value"])
|
|
self.assertEqual(testmod.test_value, 38)
|
|
del sys.modules[TESTMOD]
|
|
test_ns = {}
|
|
exec("from {} import test_value".format(TESTMOD), test_ns)
|
|
self.assertEqual(test_ns['test_value'], 38)
|
|
|
|
ziptest_a = __import__("ziptest_a", {}, {}, ["test_value"])
|
|
self.assertEqual(ziptest_a.test_value, 23)
|
|
import ziptest_c
|
|
self.assertEqual(ziptest_c.test_value, 1337)
|
|
|
|
|
|
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)
|
|
|
|
def testFilenameTooLong(self):
|
|
self.assertZipFailure('A' * 33000)
|
|
|
|
def testEmptyFile(self):
|
|
test_support.unlink(TESTMOD)
|
|
open(TESTMOD, 'w+').close()
|
|
self.assertZipFailure(TESTMOD)
|
|
|
|
def testFileUnreadable(self):
|
|
test_support.unlink(TESTMOD)
|
|
fd = os.open(TESTMOD, os.O_CREAT, 000)
|
|
try:
|
|
os.close(fd)
|
|
self.assertZipFailure(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, 0666)
|
|
test_support.unlink(TESTMOD)
|
|
|
|
def testNotZipFile(self):
|
|
test_support.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):
|
|
test_support.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(IOError, 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:
|
|
test_support.run_unittest(
|
|
UncompressedZipImportTestCase,
|
|
CompressedZipImportTestCase,
|
|
BadFileZipImportTestCase,
|
|
ZipFileModifiedAfterImportTestCase,
|
|
)
|
|
finally:
|
|
test_support.unlink(TESTMOD)
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|