diff options
Diffstat (limited to 'Lib/test')
| -rw-r--r-- | Lib/test/test_warnings/__init__.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Lib/test/test_warnings/__init__.py b/Lib/test/test_warnings/__init__.py index 69623c4..75539cf 100644 --- a/Lib/test/test_warnings/__init__.py +++ b/Lib/test/test_warnings/__init__.py @@ -794,6 +794,17 @@ class _WarningsTests(BaseTest, unittest.TestCase): self.assertNotIn(b'Warning!', stderr) self.assertNotIn(b'Error', stderr) + @support.cpython_only + def test_issue31411(self): + # warn_explicit() shouldn't raise a SystemError in case + # warnings.onceregistry isn't a dictionary. + wmod = self.module + with original_warnings.catch_warnings(module=wmod): + wmod.filterwarnings('once') + with support.swap_attr(wmod, 'onceregistry', None): + with self.assertRaises(TypeError): + wmod.warn_explicit('foo', Warning, 'bar', 1, registry=None) + class WarningsDisplayTests(BaseTest): |