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| author | Martin Panter <vadmium+py@gmail.com> | 2016-05-27 07:32:11 (GMT) |
|---|---|---|
| committer | Martin Panter <vadmium+py@gmail.com> | 2016-05-27 07:32:11 (GMT) |
| commit | 0fdf41d847335e108652bbf4e9e9be9855e20005 (patch) | |
| tree | cb8c924f0ffe05179a55f38f44a5536483aafe44 /Lib/test | |
| parent | 06198789a22b7a9f8f66583c630d8d268508519c (diff) | |
| download | cpython-0fdf41d847335e108652bbf4e9e9be9855e20005.zip cpython-0fdf41d847335e108652bbf4e9e9be9855e20005.tar.gz cpython-0fdf41d847335e108652bbf4e9e9be9855e20005.tar.bz2 | |
Issue #5784: Expand documentation and tests for zlib wbits parameter
Based on documentation by AM Kuchling.
Diffstat (limited to 'Lib/test')
| -rw-r--r-- | Lib/test/test_zlib.py | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/Lib/test/test_zlib.py b/Lib/test/test_zlib.py index 1cafcb5..72a1596 100644 --- a/Lib/test/test_zlib.py +++ b/Lib/test/test_zlib.py @@ -680,6 +680,49 @@ class CompressObjectTestCase(BaseCompressTestCase, unittest.TestCase): finally: data = None + def test_wbits(self): + 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) + self.assertEqual(zlib.decompress(zlib15, 32 + 15), HAMLET_SCENE) + with self.assertRaisesRegex(zlib.error, 'invalid window size'): + zlib.decompress(zlib15, 14) + dco = zlib.decompressobj(wbits=32 + 15) + self.assertEqual(dco.decompress(zlib15), HAMLET_SCENE) + dco = zlib.decompressobj(wbits=14) + with self.assertRaisesRegex(zlib.error, 'invalid window size'): + dco.decompress(zlib15) + + co = zlib.compressobj(level=1, wbits=9) + 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) + self.assertEqual(zlib.decompress(zlib9, 32 + 9), HAMLET_SCENE) + dco = zlib.decompressobj(wbits=32 + 9) + self.assertEqual(dco.decompress(zlib9), HAMLET_SCENE) + + co = zlib.compressobj(level=1, wbits=-15) + deflate15 = co.compress(HAMLET_SCENE) + co.flush() + self.assertEqual(zlib.decompress(deflate15, -15), HAMLET_SCENE) + dco = zlib.decompressobj(wbits=-15) + self.assertEqual(dco.decompress(deflate15), HAMLET_SCENE) + + co = zlib.compressobj(level=1, wbits=-9) + deflate9 = co.compress(HAMLET_SCENE) + co.flush() + self.assertEqual(zlib.decompress(deflate9, -9), HAMLET_SCENE) + self.assertEqual(zlib.decompress(deflate9, -15), HAMLET_SCENE) + dco = zlib.decompressobj(wbits=-9) + self.assertEqual(dco.decompress(deflate9), HAMLET_SCENE) + + co = zlib.compressobj(level=1, wbits=16 + 15) + gzip = co.compress(HAMLET_SCENE) + co.flush() + self.assertEqual(zlib.decompress(gzip, 16 + 15), HAMLET_SCENE) + self.assertEqual(zlib.decompress(gzip, 32 + 15), HAMLET_SCENE) + dco = zlib.decompressobj(32 + 15) + self.assertEqual(dco.decompress(gzip), HAMLET_SCENE) + def genblock(seed, length, step=1024, generator=random): """length-byte stream of random data from a seed (in step-byte blocks).""" |