'Test negative response with invalid user'

def test_bad_student(self):

    staff_page = self._goto_staff_page()
    staff_page.answer_problem()
    staff_debug_page = staff_page.open_staff_debug_info()
    staff_debug_page.delete_state('INVALIDUSER')
    msg = staff_debug_page.idash_msg[0]
    self.assertEqual(u'Failed    to    delete    student    state    for    user.    User    does    not    exist.', msg)
