diff options
Diffstat (limited to 'Lib/test')
| -rw-r--r-- | Lib/test/test_warnings.py | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Lib/test/test_warnings.py b/Lib/test/test_warnings.py index 52b9dbe..111ff79 100644 --- a/Lib/test/test_warnings.py +++ b/Lib/test/test_warnings.py @@ -6,6 +6,7 @@ import sys import unittest import subprocess from test import support +from test.script_helper import assert_python_ok from test import warning_tests @@ -393,6 +394,22 @@ class WCmdLineTests(unittest.TestCase): 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 |