Coverage testing TODOs:


Old TODOs:
* add column hits limit.
* /=/model.json?var=foo
* t/p3p-cookie.t for cross-site cookie support and the cookie_site url param
* view description should be mandatory
* [bug] when view name is duplicate (POST/PUT)
* [bug] when view definition is duplicate (POST/PUT)
* [bug] reject updating the names of the builtin roles.
* add the sorting capability (i.e. the order_by url param) to model/view/role lists
* [bug] PUT an empty label.
* [bug] PUT /=/role/Foo/id/32 does not work as expected.
* order in ACL rule listing

1、
action 的参数值为 0 时会有错误。。。
agent.zhang: 1. action 参数用于 URL 拼接
agent.zhang: 2. action 参数用于 SQL 语句比如 where col > $value 中的 value 参数

2、
agent.zhang: 1. 递归调用 action （分直接递归和间接递归两种）

3、
agent.zhang: 创建一个带参数的 action
agent.zhang: 然后在调用它时，参数提供一个带汉字的值
agent.zhang: 目前的（错误的）实现是会引入乱码