'When the same module is specified with two --testmodule flags, it
should only appear once in the suite.'

def test_testmoduleTwice(self):

    self.config.opt_testmodule(sibpath('moduletest.py'))
    self.config.opt_testmodule(sibpath('moduletest.py'))
    self.assertSuitesEqual(trial._getSuite(self.config), ['twisted.trial.test.test_log'])
