test.support: add requires_mac_ver() function
Add also linux_version() to __all__.
diff --git a/Lib/test/support.py b/Lib/test/support.py
index 6724e9b..1bf9ca5 100644
--- a/Lib/test/support.py
+++ b/Lib/test/support.py
@@ -37,7 +37,8 @@
"Error", "TestFailed", "ResourceDenied", "import_module",
"verbose", "use_resources", "max_memuse", "record_original_stdout",
"get_original_stdout", "unload", "unlink", "rmtree", "forget",
- "is_resource_enabled", "requires", "find_unused_port", "bind_port",
+ "is_resource_enabled", "requires", "linux_version", "requires_mac_ver",
+ "find_unused_port", "bind_port",
"IPV6_ENABLED", "is_jython", "TESTFN", "HOST", "SAVEDCWD", "temp_cwd",
"findfile", "sortdict", "check_syntax_error", "open_urlresource",
"check_warnings", "CleanImport", "EnvironmentVarGuard", "TransientResource",
@@ -299,6 +300,25 @@
except ValueError:
return 0, 0, 0
+def requires_mac_ver(*min_version):
+ """Raise SkipTest if the OS is Mac OS X and the OS X version if less than
+ min_version.
+
+ For example, support.requires_linux_version(10, 5) raises SkipTest if the
+ version is less than 10.5.
+ """
+ if sys.platform != 'darwin':
+ return
+ version_txt = platform.mac_ver()[0]
+ try:
+ version = tuple(map(int, version_txt.split('.')))
+ except ValueError:
+ return
+ if version < min_version:
+ min_version_txt = '.'.join(map(str, min_version))
+ raise unittest.SkipTest("Mac OS X %s or higher required, not %s"
+ % (min_version_txt, version_txt))
+
HOST = 'localhost'
def find_unused_port(family=socket.AF_INET, socktype=socket.SOCK_STREAM):
diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py
index 5b914d5..636ff2c 100644
--- a/Lib/test/test_math.py
+++ b/Lib/test/test_math.py
@@ -2,6 +2,7 @@
# XXXX Should not do tests around zero only
from test.support import run_unittest, verbose, requires_IEEE_754
+from test import support
import unittest
import math
import os
@@ -669,10 +670,10 @@
self.assertTrue(math.isnan(math.log2(NAN)))
@requires_IEEE_754
- @unittest.skipIf(sys.platform == 'darwin'
- and platform.mac_ver()[0].startswith('10.4.'),
- 'Mac OS X Tiger log2() is not accurate enough')
def testLog2Exact(self):
+ # log2() is not accurate enough on Mac OS X Tiger (10.4)
+ support.requires_mac_ver(10, 5)
+
# Check that we get exact equality for log2 of powers of 2.
actual = [math.log2(math.ldexp(1.0, n)) for n in range(-1074, 1024)]
expected = [float(n) for n in range(-1074, 1024)]