Merged revisions 76177 via svnmerge from
svn+ssh://pythondev@www.python.org/python/branches/py3k
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r76177 | mark.dickinson | 2009-11-09 17:12:30 +0000 (Mon, 09 Nov 2009) | 13 lines
Merged revisions 76176 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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r76176 | mark.dickinson | 2009-11-09 17:03:34 +0000 (Mon, 09 Nov 2009) | 7 lines
Issue #7251: Break out round tests for large values into a separate
test function, and skip that test on Linux/alpha systems with a broken
system round function.
This should turn the Debian/alpha buildbot green.
........
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diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index cac4555..f88a2d5d 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -1,5 +1,6 @@
# Python test set -- built-in functions
+import platform
import test.support, unittest
from test.support import fcmp, TESTFN, unlink, run_unittest, \
run_with_locale
@@ -1123,6 +1124,27 @@
self.assertRaises(TypeError, round, t)
self.assertRaises(TypeError, round, t, 0)
+ # Some versions of glibc for alpha have a bug that affects
+ # float -> integer rounding (floor, ceil, rint, round) for
+ # values in the range [2**52, 2**53). See:
+ #
+ # http://sources.redhat.com/bugzilla/show_bug.cgi?id=5350
+ #
+ # We skip this test on Linux/alpha if it would fail.
+ linux_alpha = (platform.system().startswith('Linux') and
+ platform.machine().startswith('alpha'))
+ system_round_bug = round(5e15+1) != 5e15+1
+ @unittest.skipIf(linux_alpha and system_round_bug,
+ "test will fail; failure is probably due to a "
+ "buggy system round function")
+ def test_round_large(self):
+ # Issue #1869: integral floats should remain unchanged
+ self.assertEqual(round(5e15-1), 5e15-1)
+ self.assertEqual(round(5e15), 5e15)
+ self.assertEqual(round(5e15+1), 5e15+1)
+ self.assertEqual(round(5e15+2), 5e15+2)
+ self.assertEqual(round(5e15+3), 5e15+3)
+
def test_setattr(self):
setattr(sys, 'spam', 1)
self.assertEqual(sys.spam, 1)