From 6d362b25c5125070ddd58f0bfaf79cb67e4f2cd4 Mon Sep 17 00:00:00 2001 From: Raymond Hettinger Date: Sun, 31 Aug 2003 04:35:24 +0000 Subject: [PATCH] SF bug #785222: zlib monotonic test For smaller datasets, it is not always true the increasing the compression level always results in better compression. Removed the test which made this invalid assumption. --- Lib/test/test_zlib.py | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/Lib/test/test_zlib.py b/Lib/test/test_zlib.py index c703964e3f..3ad255f8bf 100644 --- a/Lib/test/test_zlib.py +++ b/Lib/test/test_zlib.py @@ -96,17 +96,6 @@ class CompressTestCase(unittest.TestCase): x = zlib.compress(data) self.assertEqual(zlib.decompress(x), data) - def test_monotonic(self): - # higher compression levels should not expand compressed size - data = hamlet_scene * 8 * 16 - last = length = len(zlib.compress(data, 0)) - self.failUnless(last > len(data), "compress level 0 always expands") - for level in range(10): - length = len(zlib.compress(data, level)) - self.failUnless(length <= last, - 'compress level %d more effective than %d!' % ( - level-1, level)) - last = length -- 2.50.1