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| author | Martin Panter <vadmium+py@gmail.com> | 2016-05-27 11:20:21 (GMT) |
|---|---|---|
| committer | Martin Panter <vadmium+py@gmail.com> | 2016-05-27 11:20:21 (GMT) |
| commit | c618ae8ed79cf391efa62b7d0ed571882a4356f9 (patch) | |
| tree | 573c93ccd5a6fab4053dfff7355c95cf0f989127 | |
| parent | 0fdf41d847335e108652bbf4e9e9be9855e20005 (diff) | |
| download | cpython-c618ae8ed79cf391efa62b7d0ed571882a4356f9.zip cpython-c618ae8ed79cf391efa62b7d0ed571882a4356f9.tar.gz cpython-c618ae8ed79cf391efa62b7d0ed571882a4356f9.tar.bz2 | |
Issue #5784: wbits=0 apparently added in zlib v1.2.3.5
| -rw-r--r-- | Doc/library/zlib.rst | 1 | ||||
| -rw-r--r-- | Lib/test/test_zlib.py | 13 |
2 files changed, 12 insertions, 2 deletions
diff --git a/Doc/library/zlib.rst b/Doc/library/zlib.rst index 565f3f7..b7ca558 100644 --- a/Doc/library/zlib.rst +++ b/Doc/library/zlib.rst @@ -142,6 +142,7 @@ The available exception and functions in this module are: must include a zlib header and trailer. * 0: Automatically determine the window size from the zlib header. + Only supported since zlib 1.2.3.5. * −8 to −15: Uses the absolute value of *wbits* as the window size logarithm. The input must be a raw stream with no header or trailer. diff --git a/Lib/test/test_zlib.py b/Lib/test/test_zlib.py index 72a1596..b6bebbc 100644 --- a/Lib/test/test_zlib.py +++ b/Lib/test/test_zlib.py @@ -681,10 +681,18 @@ class CompressObjectTestCase(BaseCompressTestCase, unittest.TestCase): data = None def test_wbits(self): + # wbits=0 only supported since zlib v1.2.3.5 + # Register "1.2.3" as "1.2.3.0" + v = (zlib.ZLIB_RUNTIME_VERSION + ".0").split(".", 4) + supports_wbits_0 = int(v[0]) > 1 or int(v[0]) == 1 \ + and (int(v[1]) > 2 or int(v[1]) == 2 + and (int(v[2]) > 3 or int(v[2]) == 3 and int(v[3]) >= 5)) + co = zlib.compressobj(level=1, wbits=15) zlib15 = co.compress(HAMLET_SCENE) + co.flush() self.assertEqual(zlib.decompress(zlib15, 15), HAMLET_SCENE) - self.assertEqual(zlib.decompress(zlib15, 0), HAMLET_SCENE) + if supports_wbits_0: + self.assertEqual(zlib.decompress(zlib15, 0), HAMLET_SCENE) self.assertEqual(zlib.decompress(zlib15, 32 + 15), HAMLET_SCENE) with self.assertRaisesRegex(zlib.error, 'invalid window size'): zlib.decompress(zlib15, 14) @@ -698,7 +706,8 @@ class CompressObjectTestCase(BaseCompressTestCase, unittest.TestCase): zlib9 = co.compress(HAMLET_SCENE) + co.flush() self.assertEqual(zlib.decompress(zlib9, 9), HAMLET_SCENE) self.assertEqual(zlib.decompress(zlib9, 15), HAMLET_SCENE) - self.assertEqual(zlib.decompress(zlib9, 0), HAMLET_SCENE) + if supports_wbits_0: + self.assertEqual(zlib.decompress(zlib9, 0), HAMLET_SCENE) self.assertEqual(zlib.decompress(zlib9, 32 + 9), HAMLET_SCENE) dco = zlib.decompressobj(wbits=32 + 9) self.assertEqual(dco.decompress(zlib9), HAMLET_SCENE) |