@Override
    public Set<Long> calculateUsers(DelegateExecution execution, String param) {
        return StrUtils.splitToLongSet(param);
    }
@Test
    public void testCalculateUsers() {
        // 准备参数
        String param = "1,2";

        // 调用
        Set<Long> results = strategy.calculateUsers(null, param);
        // 断言
        assertEquals(asSet(1L, 2L), results);
    }