def test_stacklevel(self):
        # Test stacklevel argument
        # make sure all messages are different, so the warning won't be skipped
        with warnings_state(self.module):
            with original_warnings.catch_warnings(record=True,
                    module=self.module) as w:
                warning_tests.inner("spam3", stacklevel=1)
                self.assertEqual(os.path.basename(w[-1].filename),
                                    "stacklevel.py")
                warning_tests.outer("spam4", stacklevel=1)
                self.assertEqual(os.path.basename(w[-1].filename),
                                    "stacklevel.py")

                warning_tests.inner("spam5", stacklevel=2)
                self.assertEqual(os.path.basename(w[-1].filename),
                                    "__init__.py")
                warning_tests.outer("spam6", stacklevel=2)
                self.assertEqual(os.path.basename(w[-1].filename),
                                    "stacklevel.py")
                warning_tests.outer("spam6.5", stacklevel=3)
                self.assertEqual(os.path.basename(w[-1].filename),
                                    "__init__.py")

                warning_tests.inner("spam7", stacklevel=9999)
                self.assertEqual(os.path.basename(w[-1].filename),
                                    "sys")