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#[cfg(test)] mod tests { #[test] fn it_works() { let arg = 5; let answer = crate::add_one(arg); assert_eq!(6, answer); } } /// 加一操作 /// /// # 例子 /// /// ``` /// let arg = 5; /// let answer = today_utils::add_one(arg); /// /// assert_eq!(6, answer); /// ``` pub fn add_one(x: i32) -> i32 { x + 1 }