'Assert that user has staff access on ccx.'

def test_ccx_coach_has_staff_role(self):

    ccx_locator = self.make_ccx()
    self.assertTrue(access.has_access(self.coach, 'staff', ccx_locator))
    self.setup_user()
    self.assertFalse(access.has_access(self.user, 'staff', ccx_locator))
    CourseStaffRole(ccx_locator).add_users(self.user)
    self.assertTrue(access.has_access(self.user, 'staff', ccx_locator))
