add hg and python

sys/lib/python/test/test_zipimport.py

@@ -0,0 +1,429 @@
+import sys
+import os
+import marshal
+import imp
+import struct
+import time
+import unittest
+
+import zlib # implied prerequisite
+from zipfile import ZipFile, ZipInfo, ZIP_STORED, ZIP_DEFLATED
+from test import test_support
+from test.test_importhooks import ImportHooksBaseTestCase, test_src, test_co
+
+import zipimport
+import linecache
+import doctest
+import inspect
+import StringIO
+from traceback import extract_tb, extract_stack, print_tb
+raise_src = 'def do_raise(): raise TypeError\n'
+
+# so we only run testAFakeZlib once if this test is run repeatedly
+# which happens when we look for ref leaks
+test_imported = False
+
+
+def make_pyc(co, mtime):
+    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(-0x100000000L + long(mtime))
+    pyc = imp.get_magic() + struct.pack("<i", int(mtime)) + 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)
+
+
+if __debug__:
+    pyc_ext = ".pyc"
+else:
+    pyc_ext = ".pyo"
+
+
+TESTMOD = "ziptestmodule"
+TESTPACK = "ziptestpackage"
+TESTPACK2 = "ziptestpackage2"
+TEMP_ZIP = os.path.abspath("junk95142" + os.extsep + "zip")
+
+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 doTest(self, expected_ext, files, *modules, **kw):
+        z = ZipFile(TEMP_ZIP, "w")
+        try:
+            for name, (mtime, data) in files.items():
+                zinfo = ZipInfo(name, time.localtime(mtime))
+                zinfo.compress_type = self.compression
+                z.writestr(zinfo, data)
+            z.close()
+
+            stuff = kw.get("stuff", None)
+            if stuff is not None:
+                # Prepend 'stuff' to the start of the zipfile
+                f = open(TEMP_ZIP, "rb")
+                data = f.read()
+                f.close()
+
+                f = open(TEMP_ZIP, "wb")
+                f.write(stuff)
+                f.write(data)
+                f.close()
+
+            sys.path.insert(0, TEMP_ZIP)
+
+            mod = __import__(".".join(modules), globals(), locals(),
+                             ["__dummy__"])
+
+            call = kw.get('call')
+            if call is not None:
+                call(mod)
+
+            if expected_ext:
+                file = mod.get_file()
+                self.assertEquals(file, os.path.join(TEMP_ZIP,
+                                  *modules) + expected_ext)
+        finally:
+            z.close()
+            os.remove(TEMP_ZIP)
+
+    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:
+            return
+        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 testEmptyPy(self):
+        files = {TESTMOD + ".py": (NOW, "")}
+        self.doTest(None, files, TESTMOD)
+
+    def testBadMagic(self):
+        # make pyc magic word invalid, forcing loading from .py
+        m0 = ord(test_pyc[0])
+        m0 ^= 0x04  # flip an arbitrary bit
+        badmagic_pyc = chr(m0) + test_pyc[1:]
+        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
+        m0 = ord(test_pyc[0])
+        m0 ^= 0x04  # flip an arbitrary bit
+        badmagic_pyc = chr(m0) + test_pyc[1:]
+        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):
+        t3 = ord(test_pyc[7])
+        t3 ^= 0x02  # flip the second bit -- not the first as that one
+                    # isn't stored in the .py's mtime in the zip archive.
+        badtime_pyc = test_pyc[:7] + chr(t3) + test_pyc[8:]
+        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 testDeepPackage(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)}
+        self.doTest(pyc_ext, files, TESTPACK, TESTPACK2, TESTMOD)
+
+    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)}
+
+        z = ZipFile(TEMP_ZIP, "w")
+        try:
+            for name, (mtime, data) in files.items():
+                zinfo = ZipInfo(name, time.localtime(mtime))
+                zinfo.compress_type = self.compression
+                z.writestr(zinfo, data)
+            z.close()
+
+            zi = zipimport.zipimporter(TEMP_ZIP)
+            self.assertEquals(zi.is_package(TESTPACK), True)
+            zi.load_module(TESTPACK)
+
+            self.assertEquals(zi.is_package(packdir + '__init__'), False)
+            self.assertEquals(zi.is_package(packdir + TESTPACK2), True)
+            self.assertEquals(zi.is_package(packdir2 + TESTMOD), False)
+
+            mod_name = packdir2 + TESTMOD
+            mod = __import__(module_path_to_dotted_name(mod_name))
+            self.assertEquals(zi.get_source(TESTPACK), None)
+            self.assertEquals(zi.get_source(mod_name), None)
+        finally:
+            z.close()
+            os.remove(TEMP_ZIP)
+
+    def testGetData(self):
+        z = ZipFile(TEMP_ZIP, "w")
+        z.compression = self.compression
+        try:
+            name = "testdata.dat"
+            data = "".join([chr(x) for x in range(256)]) * 500
+            z.writestr(name, data)
+            z.close()
+            zi = zipimport.zipimporter(TEMP_ZIP)
+            self.assertEquals(data, zi.get_data(name))
+            self.assert_('zipimporter object' in repr(zi))
+        finally:
+            z.close()
+            os.remove(TEMP_ZIP)
+
+    def testImporterAttr(self):
+        src = """if 1:  # indent hack
+        def get_file():
+            return __file__
+        if __loader__.get_data("some.data") != "some data":
+            raise AssertionError, "bad data"\n"""
+        pyc = make_pyc(compile(src, "<???>", "exec"), NOW)
+        files = {TESTMOD + pyc_ext: (NOW, pyc),
+                 "some.data": (NOW, "some data")}
+        self.doTest(pyc_ext, files, TESTMOD)
+
+    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="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)
+        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 = StringIO.StringIO()
+            print_tb(tb, 1, s)
+            self.failUnless(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)
+
+
+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)
+
+    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 cleanup():
+    # this is necessary if test is run repeated (like when finding leaks)
+    global test_imported
+    if test_imported:
+        zipimport._zip_directory_cache.clear()
+        if hasattr(UncompressedZipImportTestCase, 'testAFakeZlib'):
+            delattr(UncompressedZipImportTestCase, 'testAFakeZlib')
+        if hasattr(CompressedZipImportTestCase, 'testAFakeZlib'):
+            delattr(CompressedZipImportTestCase, 'testAFakeZlib')
+    test_imported = True
+
+def test_main():
+    cleanup()
+    try:
+        test_support.run_unittest(
+              UncompressedZipImportTestCase,
+              CompressedZipImportTestCase,
+              BadFileZipImportTestCase,
+            )
+    finally:
+        test_support.unlink(TESTMOD)
+
+if __name__ == "__main__":
+    test_main()