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Add test.test_support.guard_warnings_filter . This function returns a context

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manager that protects warnings.filter from being modified once the context is
exited.
This commit is contained in:
Brett Cannon 2006-12-13 23:09:53 +00:00
parent c745df8519
commit 6d9520c4f0
6 changed files with 37 additions and 26 deletions
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11
Lib/test/test_import.py
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@ -1,10 +1,11 @@
from test.test_support import TESTFN, run_unittest
from test.test_support import TESTFN, run_unittest, guard_warnings_filter
import unittest
import os
import random
import sys
import py_compile
import warnings
def remove_files(name):
@ -204,15 +205,11 @@ class ImportTest(unittest.TestCase):
self.assert_(y is test.test_support, y.__name__)
def test_import_initless_directory_warning(self):
import warnings
oldfilters = warnings.filters[:]
warnings.simplefilter('error', ImportWarning);
try:
with guard_warnings_filter():
# Just a random non-package directory we always expect to be
# somewhere in sys.path...
warnings.simplefilter('error', ImportWarning)
self.assertRaises(ImportWarning, __import__, "site-packages")
finally:
warnings.filters = oldfilters
def test_main(verbose=None):
run_unittest(ImportTest)