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.
diff --git a/Lib/test/test_zlib.py b/Lib/test/test_zlib.py
index c703964..3ad255f 100644
--- a/Lib/test/test_zlib.py
+++ b/Lib/test/test_zlib.py
@@ -96,17 +96,6 @@
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