I'm only backporting the tests here.
Merged revisions 86395 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k
........
r86395 | antoine.pitrou | 2010-11-10 14:55:25 +0100 (mer., 10 nov. 2010) | 4 lines
Issue #10372: Import the warnings module only after the IO library is
initialized, so as to avoid bootstrap issues with the '-W' option.
........
diff --git a/Lib/test/test_warnings.py b/Lib/test/test_warnings.py
index 4e0afcc..bc8d0b8 100644
--- a/Lib/test/test_warnings.py
+++ b/Lib/test/test_warnings.py
@@ -6,6 +6,7 @@
import unittest
import subprocess
from test import test_support
+from test.script_helper import assert_python_ok
import warning_tests
@@ -381,6 +382,22 @@
self.module._setoption('error::Warning::0')
self.assertRaises(UserWarning, self.module.warn, 'convert to error')
+ def test_improper_option(self):
+ # Same as above, but check that the message is printed out when
+ # the interpreter is executed. This also checks that options are
+ # actually parsed at all.
+ rc, out, err = assert_python_ok("-Wxxx", "-c", "pass")
+ self.assertIn(b"Invalid -W option ignored: invalid action: 'xxx'", err)
+
+ def test_warnings_bootstrap(self):
+ # Check that the warnings module does get loaded when -W<some option>
+ # is used (see issue #10372 for an example of silent bootstrap failure).
+ rc, out, err = assert_python_ok("-Wi", "-c",
+ "import sys; sys.modules['warnings'].warn('foo', RuntimeWarning)")
+ # '-Wi' was observed
+ self.assertFalse(out.strip())
+ self.assertNotIn(b'RuntimeWarning', err)
+
class CWCmdLineTests(BaseTest, WCmdLineTests):
module = c_warnings