'Specifying \'--unclean-warnings\' on the trial command line will cause
reporters to be wrapped in a device which converts unclean errors to
warnings.  See L{test_reporter.DirtyReactorTests} for implications.'

def test_getsUncleanWarnings(self):

    self.parseOptions(['--unclean-warnings'])
    runner = self.getRunner()
    self.assertIsInstance(runner._makeResult(), reporter.UncleanWarningsReporterWrapper)
