Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 1 | import sys |
| 2 | import os |
| 3 | import marshal |
| 4 | import imp |
| 5 | import struct |
| 6 | import time |
| 7 | |
| 8 | import zlib # implied prerequisite |
| 9 | from zipfile import ZipFile, ZipInfo, ZIP_STORED, ZIP_DEFLATED |
| 10 | from test import test_support |
| 11 | from test.test_importhooks import ImportHooksBaseTestCase, test_src, test_co |
| 12 | |
| 13 | import zipimport |
| 14 | |
| 15 | |
| 16 | def make_pyc(co, mtime): |
| 17 | data = marshal.dumps(co) |
| 18 | pyc = imp.get_magic() + struct.pack("<i", mtime) + data |
| 19 | return pyc |
| 20 | |
| 21 | NOW = time.time() |
| 22 | test_pyc = make_pyc(test_co, NOW) |
| 23 | |
| 24 | |
| 25 | if __debug__: |
| 26 | pyc_ext = ".pyc" |
| 27 | else: |
| 28 | pyc_ext = ".pyo" |
| 29 | |
| 30 | |
| 31 | TESTMOD = "ziptestmodule" |
| 32 | TESTPACK = "ziptestpackage" |
| 33 | TEMP_ZIP = "junk95142.zip" |
| 34 | |
| 35 | |
| 36 | class UncompressedZipImportTestCase(ImportHooksBaseTestCase): |
| 37 | |
| 38 | compression = ZIP_STORED |
| 39 | |
| 40 | def setUp(self): |
| 41 | # We're reusing the zip archive path, so we must clear the |
| 42 | # cached directory info. |
| 43 | zipimport._zip_directory_cache.clear() |
| 44 | ImportHooksBaseTestCase.setUp(self) |
| 45 | |
| 46 | def doTest(self, expected_ext, files, *modules): |
| 47 | z = ZipFile(TEMP_ZIP, "w") |
| 48 | try: |
| 49 | for name, (mtime, data) in files.items(): |
| 50 | zinfo = ZipInfo(name, time.localtime(mtime)) |
| 51 | zinfo.compress_type = self.compression |
| 52 | z.writestr(zinfo, data) |
| 53 | z.close() |
| 54 | sys.path.insert(0, TEMP_ZIP) |
| 55 | |
| 56 | mod = __import__(".".join(modules), globals(), locals(), |
| 57 | ["__dummy__"]) |
| 58 | file = mod.get_file() |
| 59 | self.assertEquals(file, os.path.join(TEMP_ZIP, |
| 60 | os.sep.join(modules) + expected_ext)) |
| 61 | finally: |
| 62 | z.close() |
| 63 | os.remove(TEMP_ZIP) |
| 64 | |
| 65 | def testAFakeZlib(self): |
| 66 | # |
| 67 | # This could cause a stack overflow before: importing zlib.py |
| 68 | # from a compressed archive would cause zlib to be imported |
| 69 | # which would find zlib.py in the archive, which would... etc. |
| 70 | # |
| 71 | # This test *must* be executed first: it must be the first one |
| 72 | # to trigger zipimport to import zlib (zipimport caches the |
| 73 | # zlib.decompress function object, after which the problem being |
| 74 | # tested here wouldn't be a problem anymore... |
| 75 | # (Hence the 'A' in the test method name: to make it the first |
| 76 | # item in a list sorted by name, like unittest.makeSuite() does.) |
| 77 | # |
| 78 | if "zlib" in sys.modules: |
| 79 | del sys.modules["zlib"] |
| 80 | files = {"zlib.py": (NOW, test_src)} |
| 81 | try: |
| 82 | self.doTest(".py", files, "zlib") |
| 83 | except ImportError: |
| 84 | if self.compression != ZIP_DEFLATED: |
| 85 | self.fail("expected test to not raise ImportError") |
| 86 | else: |
| 87 | if self.compression != ZIP_STORED: |
| 88 | self.fail("expected test to raise ImportError") |
| 89 | |
| 90 | def testPy(self): |
| 91 | files = {TESTMOD + ".py": (NOW, test_src)} |
| 92 | self.doTest(".py", files, TESTMOD) |
| 93 | |
| 94 | def testPyc(self): |
| 95 | files = {TESTMOD + pyc_ext: (NOW, test_pyc)} |
| 96 | self.doTest(pyc_ext, files, TESTMOD) |
| 97 | |
| 98 | def testBoth(self): |
| 99 | files = {TESTMOD + ".py": (NOW, test_src), |
| 100 | TESTMOD + pyc_ext: (NOW, test_pyc)} |
| 101 | self.doTest(pyc_ext, files, TESTMOD) |
| 102 | |
| 103 | def testBadMagic(self): |
| 104 | # make pyc magic word invalid, forcing loading from .py |
| 105 | m0 = ord(test_pyc[0]) |
| 106 | m0 ^= 0x04 # flip an arbitrary bit |
| 107 | badmagic_pyc = chr(m0) + test_pyc[1:] |
| 108 | files = {TESTMOD + ".py": (NOW, test_src), |
| 109 | TESTMOD + pyc_ext: (NOW, badmagic_pyc)} |
| 110 | self.doTest(".py", files, TESTMOD) |
| 111 | |
| 112 | def testBadMagic2(self): |
| 113 | # make pyc magic word invalid, causing an ImportError |
| 114 | m0 = ord(test_pyc[0]) |
| 115 | m0 ^= 0x04 # flip an arbitrary bit |
| 116 | badmagic_pyc = chr(m0) + test_pyc[1:] |
| 117 | files = {TESTMOD + pyc_ext: (NOW, badmagic_pyc)} |
| 118 | try: |
| 119 | self.doTest(".py", files, TESTMOD) |
| 120 | except ImportError: |
| 121 | pass |
| 122 | else: |
| 123 | self.fail("expected ImportError; import from bad pyc") |
| 124 | |
| 125 | def testBadMTime(self): |
| 126 | t3 = ord(test_pyc[7]) |
| 127 | t3 ^= 0x02 # flip the second bit -- not the first as that one |
| 128 | # isn't stored in the .py's mtime in the zip archive. |
| 129 | badtime_pyc = test_pyc[:7] + chr(t3) + test_pyc[8:] |
| 130 | files = {TESTMOD + ".py": (NOW, test_src), |
| 131 | TESTMOD + pyc_ext: (NOW, badtime_pyc)} |
| 132 | self.doTest(".py", files, TESTMOD) |
| 133 | |
| 134 | def testPackage(self): |
| 135 | packdir = TESTPACK + os.sep |
| 136 | files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc), |
| 137 | packdir + TESTMOD + pyc_ext: (NOW, test_pyc)} |
| 138 | self.doTest(pyc_ext, files, TESTPACK, TESTMOD) |
| 139 | |
| 140 | def testDeepPackage(self): |
| 141 | packdir = TESTPACK + os.sep |
| 142 | packdir2 = packdir + packdir |
| 143 | files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc), |
| 144 | packdir2 + "__init__" + pyc_ext: (NOW, test_pyc), |
| 145 | packdir2 + TESTMOD + pyc_ext: (NOW, test_pyc)} |
| 146 | self.doTest(pyc_ext, files, TESTPACK, TESTPACK, TESTMOD) |
| 147 | |
| 148 | def testGetData(self): |
| 149 | z = ZipFile(TEMP_ZIP, "w") |
| 150 | z.compression = self.compression |
| 151 | try: |
| 152 | name = "testdata.dat" |
| 153 | data = "".join([chr(x) for x in range(256)]) * 500 |
| 154 | z.writestr(name, data) |
| 155 | z.close() |
| 156 | zi = zipimport.zipimporter(TEMP_ZIP) |
| 157 | self.assertEquals(data, zi.get_data(name)) |
| 158 | finally: |
| 159 | z.close() |
| 160 | os.remove(TEMP_ZIP) |
| 161 | |
| 162 | def testImporterAttr(self): |
| 163 | src = """if 1: # indent hack |
| 164 | def get_file(): |
| 165 | return __file__ |
| 166 | if __importer__.get_data("some.data") != "some data": |
| 167 | raise AssertionError, "bad data"\n""" |
| 168 | pyc = make_pyc(compile(src, "<???>", "exec"), NOW) |
| 169 | files = {TESTMOD + pyc_ext: (NOW, pyc), |
| 170 | "some.data": (NOW, "some data")} |
| 171 | self.doTest(pyc_ext, files, TESTMOD) |
| 172 | |
| 173 | |
| 174 | class CompressedZipImportTestCase(UncompressedZipImportTestCase): |
| 175 | compression = ZIP_DEFLATED |
| 176 | |
| 177 | |
| 178 | if __name__ == "__main__": |
| 179 | test_support.run_unittest(UncompressedZipImportTestCase) |
| 180 | test_support.run_unittest(CompressedZipImportTestCase) |