'No assertion is raised if the formsets non-form errors contains the provided error.'

def test_nonform_error(self):

    msg = 'Forms    in    a    set    must    have    distinct    email    addresses.'
    for (prefix, kwargs) in self.msg_prefixes:
        self.assertFormsetError(self.response_nonform_errors, 'my_formset', None, None, msg, **kwargs)
