mason0510 / testrust Goto Github PK

1.second中定义 
2.main中使用
#[cfg(test)]
mod tests {
    #[test]
    fn it_works() {
        assert_eq!(2 + 2, 4);
    }
}

$ cargo new adder --lib
     Created library `adder` project
$ cd adder
#[test]：这个属性表明这是一个测试函数，这样测试执行者就知道将其作为测试处理
cargo test

#[derive(Debug)]
struct Rectangle {
    width: u32,
    height: u32,
}

impl Rectangle {
    fn can_hold(&self, other: &Rectangle) -> bool {
        self.width > other.width && self.height > other.height
    }
}


#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn larger_can_hold_smaller() {
        let larger = Rectangle { width: 8, height: 7 };
        let smaller = Rectangle { width: 5, height: 1 };

        assert!(larger.can_hold(&smaller));
    }
}


使用 assert_eq! 和 assert_ne! 宏来测试相等


[dependencies]
foo = "1.2.3"

[patch.crates-io]
bar = { path = '/path/to/bar' }