diff options
Diffstat (limited to 'Lib/test/test_zlib.py')
| -rw-r--r-- | Lib/test/test_zlib.py | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/Lib/test/test_zlib.py b/Lib/test/test_zlib.py index b6a60f4..f5180e0 100644 --- a/Lib/test/test_zlib.py +++ b/Lib/test/test_zlib.py @@ -490,16 +490,28 @@ class CompressObjectTestCase(BaseCompressTestCase, unittest.TestCase): def test_decompress_unused_data(self): # Repeated calls to decompress() after EOF should accumulate data in # dco.unused_data, instead of just storing the arg to the last call. - x = zlib.compress(HAMLET_SCENE) + HAMLET_SCENE - for step in 1, 2, 100: - dco = zlib.decompressobj() - data = b''.join(dco.decompress(x[i : i + step]) - for i in range(0, len(x), step)) - data += dco.flush() - - self.assertTrue(dco.eof) - self.assertEqual(data, HAMLET_SCENE) - self.assertEqual(dco.unused_data, HAMLET_SCENE) + source = b'abcdefghijklmnopqrstuvwxyz' + remainder = b'0123456789' + y = zlib.compress(source) + x = y + remainder + for maxlen in 0, 1000: + for step in 1, 2, len(y), len(x): + dco = zlib.decompressobj() + data = b'' + for i in range(0, len(x), step): + if i < len(y): + self.assertEqual(dco.unused_data, b'') + if maxlen == 0: + data += dco.decompress(x[i : i + step]) + self.assertEqual(dco.unconsumed_tail, b'') + else: + data += dco.decompress( + dco.unconsumed_tail + x[i : i + step], maxlen) + data += dco.flush() + self.assertTrue(dco.eof) + self.assertEqual(data, source) + self.assertEqual(dco.unconsumed_tail, b'') + self.assertEqual(dco.unused_data, remainder) if hasattr(zlib.compressobj(), "copy"): def test_compresscopy(self): |